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摻燒高鈣粉煤灰用于水泥和混凝土的研究
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none">一、前言
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 27.8pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">眾所周知,粉煤灰可廣泛應用于建筑、建材領(lǐng)域,節(jié)約大量不可再生資源。但近年來開始在環(huán)保要求較高的沿海地區(qū)火電廠推廣使用的低硫份、低灰份、高發(fā)熱量的神木煤后所形成的高鈣粉煤灰成色較差,f-CaO含量較高,易由于安定性問題給其在水泥和混凝土中應用帶來不利影響。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 本文主要研究上海地區(qū)鍋爐燃煤混燒所排放的高鈣粉煤灰在水泥、混凝土中的應用效果。用于水泥膠砂和混凝土中進行性能試驗的試樣均來自W、M、P三個電廠電除塵壓力罐處,其中電除塵一電場收集的灰樣模擬粗灰?guī)旎覙?,電除塵二、三電場收集的灰樣模擬細灰?guī)旎覙樱謩e考察其在水泥、混凝土中的應用效果。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 二、試驗用原材料及性能
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 2.1 水泥
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.75pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">下述試驗采用江南小野田P.Ⅱ52.5#硅酸鹽水泥,其物理性能分析見下表。
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.75pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>表1:水泥物理性能
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>密度g/cm3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>細度 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>80μm篩余% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>比表面積m2/kg | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>凝結(jié)時間(h) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>標準稠度用水量 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>安定性 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>抗折強度 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>抗壓強度 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>(Mpa) | |||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>初凝 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>終凝 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>3d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>28d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>3d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>28d | |||||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>3.15 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>341 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1:43 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2:39 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>26.00 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>合格 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>6.4 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>35.4 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>65.2 |
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normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 2.2 粉煤灰
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> A1灰,采用M電廠—電場灰樣
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> A2灰:采用M電廠二、三電場灰樣
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> B1灰:采用W電廠—電場灰樣
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> B2灰:采用W電廠二、三電場灰樣
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> C1灰:采用P電廠#1和#3粗灰?guī)斓幕覙?o:p>
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> C2灰:采用P電廠#2細灰?guī)斓幕覙?o:p>
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.85pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">上述五個灰樣的物理性能檢驗結(jié)果見表2。
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.85pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>表2:粉煤灰物理性能測試結(jié)果
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.1pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>項目 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none">編號 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>45μ篩余量(%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>需水量比(%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>f-CaO normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>(%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>安定性(mm) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>含水率(%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>燒失量(%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>SO3 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>(%) |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>A1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>18.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>101 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.49 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>4.3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.01 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.95 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>A2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.57 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>92 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.26 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>3.8 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1.09 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1.20 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>B1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>23.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>103 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.50 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>3.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.79 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.54 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>B2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>4.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>92 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.37 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>3.5 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1.51 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1.33 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>16.4 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>99 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.44 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>4.6 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1.45 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1.31 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>3.5 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>91 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.02 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1.38 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1.65 |
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normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.85pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">表3列舉了上海市地方標準DBJ08-230-98《高鈣粉煤灰混凝土應用技術(shù)規(guī)程》中對高鈣粉煤灰的質(zhì)量指標規(guī)定。
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.85pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>表3: DBJ08-230-98中對高鈣粉煤灰的質(zhì)量指標規(guī)定
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>項目 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>質(zhì)量指標 | |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Ⅰ級灰 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Ⅱ級灰 | |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>燒失量 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤5 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤8 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>游離氧化鈣 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤3.0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤2.5 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>安定性(mm) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤5 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤5 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>三氧化硫(%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤3 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0.045mm細度 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤12 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤20 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>需水量比 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤95 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center><100 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>含水率 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>≤1 |
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normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 21.75pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">對照表2和表3,可以看出,在三次鍋爐燃煤混燒試驗中,W、M、P三個電廠二、三電場收集的細灰中粉煤灰的各項技術(shù)指標可以達到DBJ08-230-98規(guī)定的Ⅰ級高鈣粉煤灰要求,而一電場收集的粗灰中的粉煤灰則基本波動于Ⅱ級高鈣粉煤灰指標要求附近。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 2.3 細骨料
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 粉煤灰用于水泥膠砂中的試驗研究采用標準砂。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 粉煤灰用于混凝土中的試驗研究采用中砂,細度模數(shù)μf=2.3,含水率3.8%,符合JGJ52-92標準。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 2.4 粗骨料
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 碎石,5-31.5mm連續(xù)級配,堆積容重1440kg/m3,平均含泥0.2%,平均泥塊含量0%,符合JGJ53-92標準。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 2.5外加劑
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">ZK901 普通減水劑,上海住總—建科化學建材有限公司生產(chǎn),減水率12%,ZK904高效減水劑,上海住總—建科化學建材有限公司,減水率18%。
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normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 三、高鈣粉煤灰用于水泥砂漿的試驗研究
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 3.1 高鈣粉煤灰對于水泥膠砂強度的影響
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 表4列出了A1、B1、B2、A2、B2、C1、C2六種混燒粉煤灰在水泥砂漿中的使用效果,水泥砂漿成型根據(jù)GB177-85,以等流度控制,根據(jù)粉煤灰在不同摻量下的需水量調(diào)整水泥膠砂成型用水量。
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 25.2pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">根據(jù)表4可以分析
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 25.2pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">① A1、B1灰和C1灰在水泥砂漿中的使用效果相近,當其摻入水泥砂漿時,可引起水泥砂漿抗壓、抗折強度一定程度的下降,摻量越大,下降程度愈甚,當摻量為10%時,砂漿抗壓強度較基準下降10%左右,而摻量至20%、30%時,其下降程度可達15%—20%。
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 25.2pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">② A2、B2和C2灰在水泥砂漿中的使用效果相近,其摻量在10%,各齡期強度與基準基本相近,當摻量達到20%-30%時,早期強度有些微下降,后期較基準還有所提高。
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 25.2pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">③ 細灰?guī)斓幕鞜勖夯覝p水效果明顯,早期及后期強度效應均有較好體現(xiàn)。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>表4:粉煤灰在水泥膠砂中的試驗分析
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>粉煤灰編號 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>摻量 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center> | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>抗折強度(MPa) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>抗壓強度(MPa) | ||||||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>3d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>28d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>60d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>3d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>28d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>60d | ||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>基準 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.4 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.7 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10.1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>44.1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>57.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>70.4 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>73.2 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>A1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>20 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>30 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.5 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>5.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.7 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.3 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>6.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.6 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.6 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>2.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>40.6 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>35.8 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>33.0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>49.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>40.1 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>43.1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>59.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>52.8 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>44.6 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>64.7 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>54.6 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>51.7 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>A2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>20 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>30 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.8 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>6.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.5 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>11.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10.6 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>43.6 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>40.7 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>39.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>58.7 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>56.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>48.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>72.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>71.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>68.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>79.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>74.3 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>71.0 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>B1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>20 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>30 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.3 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>6.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>4.8 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>6.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>6.0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.6 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.8 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.8 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>39.3 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>33.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>31.4 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>45.7 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>39.8 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>40.6 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>59.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>50.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>49.8 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>66.7 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>59.3 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>66.6 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>B2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>20 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>30 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.3 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.7 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10.0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>11.1 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>12.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>11.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>44.1 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>43.7 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>40.6 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>59.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>58.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>59.1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>73.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>72.5 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>75.0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>79.6 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>77.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>80.0 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>20 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>30 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.1 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>5.6 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.5 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>6.8 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.3 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>41.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>36.1 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>35.0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>49.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>42.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>39.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>60.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>53.6 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>49.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>67.1 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>60.1 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>54.9 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>20 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>30 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>8.1 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>9.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>10.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>11.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>11.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>11.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>45.7 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>43.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>41.0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>60.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>59.9 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>59.7 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>74.2 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>74.5 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>79.6 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>79.4 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>80.0 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>81.2 |
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none">
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none">
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 3.2 不同摻量條件下,高鈣粉煤灰對水泥漿體體積安定性的影響
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 圖1和圖2反映了A1灰摻量為5% ~ 30%條件下、 A2灰摻量為5% ~ 50%條件下時粉煤灰—水泥漿體安定性的影響規(guī)律,可見兩條曲線的變化規(guī)律—致,即雷氏夾的體積膨脹在粉煤灰摻量為10% ~ 25%時有明顯變化,但在其摻量范圍內(nèi),其最大雷氏夾膨脹量均在5.0mm以下,故水泥——粉煤灰漿體體積安定性合格。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none">
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none">圖1:
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">圖2:
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none">
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none">四、混燒粉煤灰用于混凝土的試驗研究
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 4.1 P電廠粉煤灰樣品在混凝土中的試驗研究
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 因取樣關(guān)系,本部分內(nèi)容就C2灰在混凝土中直接摻用的使用效果做了研究。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 根據(jù)C2粉煤灰的物理性質(zhì)分析,該粉煤灰屬I級高鈣粉煤灰,其細度較小,需水量比較小,減水效果明顯,活性效應十分明顯,故考慮用其以取代系數(shù)為1.0的條件替代水泥,制備混凝土。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 表5列舉了用C2粉煤灰制備的C20—C50系列混凝土配比和強度測試結(jié)果。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none">表5:
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>混凝土設(shè)計 normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>強度等級 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>混凝土配合比 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>砼坍落度(mm) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>砼抗壓強度(MPa) | ||||||||||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>水 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>水泥 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>粉煤灰 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>砂 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>石 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>外加劑 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>7d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>28d | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>60d | |||||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C20 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>基準 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>175 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>300 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>- | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>827 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1097 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk901 0.8% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>170 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>23.1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>28.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>30.0 | ||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>摻FA | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>170 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>255 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>45(15%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>827 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1097 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk901 0.8% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>175 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>20.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>25.4 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>29.3 | |||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C25 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>基準 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>175 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>310 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>- | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>823 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1091 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk901 0.8% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>170 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>26.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>31.7 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>35.4 | ||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>摻FA | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>170 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>264 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>46(15%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>823 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1091 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk901 0.8% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>175 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>23.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>30.6 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>33.7 | |||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C30 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>基準 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>175 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>330 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>- | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>816 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1040 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk904 1.0% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>180 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>31.1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>36.3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>40.7 | ||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>摻FA | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>170 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>264 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>66(20%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>816 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1040 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk904 1.0% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>185 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>28.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>34.7 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>42.9 | |||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C35 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>基準 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>175 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>342 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>- | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>805 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1067 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk904 1.0% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>180 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>37.1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>43.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>46.7 | ||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>摻FA | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>170 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>274 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>68(20%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>805 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1067 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk904 1.0% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>180 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>32.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>41.8 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>49.4 | |||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C40 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>基準 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>175 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>386 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>- | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>774 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1068 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk904 1.0% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>180 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>37.4 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>44.8 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>49.5 | ||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>摻FA | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>170 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>270 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>116(30%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>774 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1068 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk904 1.0% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>190 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>33.0 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>44.1 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>49.7 | |||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>C50 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>基準 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>175 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>442 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>- | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>732 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1054 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk904 1.0% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>180 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>44.3 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>53.2 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>61.6 | ||
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>摻FA | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>165 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>309 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>133(30%) | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>732 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>1054 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>Zk904 1.0% | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>185 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>27.9 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>52.7 | normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-layout-grid-align: none" align=center>65.0 | |||
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 25.2pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 25.2pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">根據(jù)表5,可得到:
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 25.2pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">①P電廠#2細灰?guī)旆勖夯铱捎糜贑20 ~ C50普通混凝土配制,該粉煤灰具有一定的減水效果和同水泥相當?shù)哪z凝效力,可以1:1取代15% ~ 30%的水泥。
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 25.2pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">② 表5中各系列配比通過28天強度驗證,均達到設(shè)計要求。
normal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 25.2pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none">③ 隨混凝土設(shè)計強度等級變大,膠凝材料用量增多,可相應提高該粉煤灰在混凝土中的摻量。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 五、結(jié)論
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 1、根據(jù)W、M和P電廠的抽樣分析可知,粗灰?guī)熘谢覙有阅芑静▌佑贒BGJ08-230-98規(guī)定的Ⅱ級高鈣性能指標附近,尤其是其f-CaO和安定性指標合格,細灰?guī)熘谢覙有阅苤笜丝梢赃_到DBJ08-230-98規(guī)定的Ⅰ級高鈣灰性能指標。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 2、水泥——粉煤灰凈漿試驗結(jié)果表明,在合理摻量條件下,混燒灰樣不會引起安定性不良的現(xiàn)象產(chǎn)生。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 3、細灰?guī)熘蟹勖夯覝p水效果明顯,且具一定的膠凝效力,可以1:1的比例替代混凝土中水泥15%-30%。
normal style="LAYOUT-GRID-MODE: char; LINE-HEIGHT: 150%; mso-layout-grid-align: none"> 4、經(jīng)合理級配,粗灰?guī)熘谢覙右部梢杂糜诨炷恋呐渲啤5诠こ虒嶋H應用中,對游離氧化鈣和安定性超標的粉煤灰,仍需非常謹慎,并嚴格控制?;蛲ㄟ^后加工,經(jīng)系統(tǒng)試驗鑒定,體積安定性合格,并對混凝土強度、和易性及耐久性確實無不利影響,可考慮出廠使用。
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