| 粉煤灰品质对水泥抗裂性的影响 |
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| 引用本文： | 李文伟,周世华,苏杰.粉煤灰品质对水泥抗裂性的影响[J].长江科学院院报,2009,26(6):37-39. |
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| 作者姓名： | 李文伟 周世华 苏杰 |
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| 作者单位： | 1. 南京工业大学,南京,210009;中国长江三峡工程开发总公司,试验中心,湖北,宜昌,443100
2. 长江科学院,水利部水工程安全与病害防治工程技术研究中心,武汉,430010 |
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| 基金项目： | 国家自然科学基金，水利部引进国际先进农业科学技术计划(948计划)，长江科学院中央级公益性科研院所基本科研业务费资助项目 |
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| 摘 要： | 主要分析了粉煤灰品质指标对水泥抗裂性的影响。从胶凝材料浆体抗裂性的试验结果来看，粉煤灰烧失量、碱含量、SO3含量越低，掺粉煤灰水泥浆体的抗裂性越好。值得关注的是，适当增大粉煤灰的细度对提高水泥抗裂性有利。因此粉煤灰的品质应首先注重烧失量和需水量比，而细度不必过于苛求；碱含量对水泥抗裂性不利，宜进行限制。
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| 关 键 词： | 粉煤灰品质 水泥 抗裂性 |
Influence of Fly Ash Quality on Crack Resistance of Cement |
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| LI Wen-wei,ZHOU Shi-hua,SU Jie.Influence of Fly Ash Quality on Crack Resistance of Cement[J].Journal of Yangtze River Scientific Research Institute,2009,26(6):37-39. |
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| Authors: | LI Wen-wei ZHOU Shi-hua SU Jie |
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| Affiliation: | 1.Nanjiang University of Technology;Nanjing 210009;China;2.China Three Gorges Project Corporation;Yichang 443100;3.Center on Water Engineering Safety and Disaster Prevention of the Ministry ofWater Resources;Yangtze River Scientific Research Institute;Wuhan 430010;China |
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| Abstract: | In this paper,the effect of fly ash quality on the crack resistance was discussed.The lower the loss on ignition,alkali content and SO3 content of fly ash are,the better the crack resistance of the blended cement paste is.It is worthy to point out that properly increasing the fineness of fly ash is favorable for improving the crack resistance.Therefore the major quality indexes of fly ash are loss on ignition and water demand ratio,in the next place comes fineness.The alkali content of fly ash has disadvant... |
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| Keywords: | fly ash quality cement crack resistance |
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