| 胶砂比和集料级配对ASR膨胀的影响 |
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| 引用本文： | 卢都友,沈洋,许仲梓,吕忆农,唐明述.胶砂比和集料级配对ASR膨胀的影响[J].陶瓷科学与艺术,2000(5). |
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| 作者姓名： | 卢都友 沈洋 许仲梓 吕忆农 唐明述 |
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| 作者单位： | 南京化工大学材料科学与工程学院!南京，210009，南京化工大学材料科学与工程学院!南京，210009，南京化工大学材料科学与工程学院!南京，210009，南京化工大学材料科学与工程学院!南京，210009，南京化工大学材料科学与工程学院!南京，210009 |
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| 基金项目： | 国家九五重点科技攻关项目 |
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| 摘 要： | 为建立快速鉴定硅质集料碱活性的方法 ,以沸石化珍珠岩和硅质砾石为集料研究了胶砂比和集料级配对砂浆试体ASR膨胀的影响。结果表明 :对检测集料ASR活性而言 ,快速砂浆棒法 (ASTMC12 6 0和CSAA2 3 2 - 2 5A)所建立的集料级配和胶砂比不是最敏感条件。采用单级配集料和多胶砂比砂浆试体可以更快速、可靠地鉴定集料ASR活性
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| 关 键 词： | 碱硅酸反应(ASR) 碱活性 级配 胶砂比 混凝土 |
EFFECT OF CEMENT AGGREGATE RATIO AND GRADING OF AGGREGATE ON EXPANSION DUE TO ASR |
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| Lu Duyou\ Shen Yang\ Xu Zhongzi\ Lu Yinong\ Tang Mingshu College of Materials Science and Engineering,Nanjing University of Chemical Technology,Nanjing,China.EFFECT OF CEMENT AGGREGATE RATIO AND GRADING OF AGGREGATE ON EXPANSION DUE TO ASR[J].Ceramics Science & Art,2000(5). |
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| Authors: | Lu Duyou\ Shen Yang\ Xu Zhongzi\ Lu Yinong\ Tang Mingshu College of Materials Science and Engineering Nanjing University of Chemical Technology Nanjing China |
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| Affiliation: | Lu Duyou\ Shen Yang\ Xu Zhongzi\ Lu Yinong\ Tang Mingshu College of Materials Science and Engineering,Nanjing University of Chemical Technology,Nanjing,210009,China |
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| Abstract: | For developing an accelerated method to determine the alkali reactivity of aggregates, the effect of cement-aggregate ratio ( C/A ) and aggregate grading on the expansion due to ASR were evaluated by measuring the expansion of mortar bars containing various graded zeolitic pearlite and siliceous gravel aggregates. Results showed that single grading was more sensitive than multi-grading in identifying the ASR reactivity of aggregate and the aggregate grading and cement-aggregate ratio used in ASTM C1260 were not the most sensitive conditions. The reactivity of aggregate may be reliably determined in shorter time when mortar bars with single grading aggregate and various cement-aggregate ratios were used. |
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| Keywords: | alkali-silica reaction\ aggregate grading\ cement-aggregate ratio\ concrete |
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