| 双掺粉煤灰和石灰石粉对混凝土抗冻融性能的影响研究 |
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| 引用本文： | 何智海,刘运华,钱春香,高桂波.双掺粉煤灰和石灰石粉对混凝土抗冻融性能的影响研究[J].新型建筑材料,2010,37(2). |
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| 作者姓名： | 何智海 刘运华 钱春香 高桂波 |
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| 作者单位： | 1. 东南大学,材料科学与工程学院,江苏,南京,211189
2. 郴州市建设工程质量安全监督管理站,湖南,郴州,423000 |
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| 基金项目： | 国家自然科学基金重点项目 |
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| 摘 要： | 研究了单掺石灰石粉以及双掺粉煤灰和石灰石粉的混凝土抗冻融性能。结果表明,石灰石粉具有一定的减水效果,增大了混凝土拌合物的坍落度;单掺10%石灰石粉的混凝土早期抗压强度随着石灰石粉细度的增加而增大,石灰石粉细度过大影响混凝土后期强度的发展,其细度大小对混凝土抗冻融性能影响不大;双掺10%粉煤灰和10%石灰石粉的混凝土各龄期抗压强度均高于普通混凝土,其抗冻融性能接近普通混凝土,表现出石灰石粉的早期增强和粉煤灰的后期活性互补效应,增加粉煤灰掺量劣化了混凝土强度和抗冻融性能。
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| 关 键 词： | 混凝土 石灰石粉 粉煤灰 坍落度 抗压强度 抗冻融性能 |
The study of effects on resistance to freezing-thawing of concrete mixed with fly ash and ground limestone |
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| HE Zhihai,LIU Yunhua,QIAN Chunxiang,GAO Guibo.The study of effects on resistance to freezing-thawing of concrete mixed with fly ash and ground limestone[J].New Building Materials,2010,37(2). |
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| Authors: | HE Zhihai LIU Yunhua QIAN Chunxiang GAO Guibo |
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| Affiliation: | HE Zhihai1,LIU Yunhua2,QIAN Chunxiang1,GAO Guibo1(1.College of Materials Science , Engineering,Southeast University,Nanjing 211189,Jiangsu,China,2.Construction Projects Quality Safety Surveillance Management Station of Chenzhou City,Chenzhou 423000,Hunan,China) |
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| Abstract: | The resistance to freezing-thawing of concrete with ground limestone and concrete with fly ash and ground limestone was studied.The results indicate that the ground limestone has certain water-reducing effect,which increases the slump of concrete mixture;the early compressive strength of concrete with 10% ground limestone increases with the rise of fineness of ground limestone,but the excessive fineness of ground limestone influences the late compressive strength and the fineness of ground limestone does no... |
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| Keywords: | concrete ground limestone fly ash slump compressive strength resistance to freezing-thawing |
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