| 冻融循环条件下粉煤灰对混凝土渗透性的影响 |
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| 引用本文： | 汪振双,王立久.冻融循环条件下粉煤灰对混凝土渗透性的影响[J].沈阳工业大学学报,2011,33(4):462-467. |
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| 作者姓名： | 汪振双 王立久 |
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| 作者单位： | 大连理工大学建设工程学部;东北电力大学建筑工程学院; |
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| 基金项目： | “十一五”国家科技支撑计划重大资助项目(2006BAJ04A04); 辽宁省教育厅资助项目(2008282) |
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| 摘 要： | 为了分析冻融循环条件下粉煤灰对混凝土渗透性的影响，试验采用粉煤灰等量替代水泥掺量的10%、20%和30%，水胶比为0.42和0.35，对不同掺量粉煤灰混凝土进行了冻融循环试验和交流电渗透性试验，并与普通混凝土进行了对比.试验结果表明，当水胶比为0.42时，随着粉煤灰含量的增加，混凝土的抗渗透性能提高，而抗冻性能降低；当水胶比为0.35时，随着粉煤灰含量的增加，混凝土的抗渗透性能提高，而抗冻性能先提高后降低，存在一个最佳值.冻融循环后，混凝土的渗透性明显增大，可以用冻融循环后混凝土渗阻损失率来表征混凝土的抗冻破坏程度.
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| 关 键 词： | 冻融循环 粉煤灰 渗透性 抗冻性 质量损失 相对动弹性模量 渗阻 渗阻损失率 |
Influence of fly ash on concrete permeability under freezing-thawing cycle condition |
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| WANG Zhen-shuang,WANG Li-jiu.Influence of fly ash on concrete permeability under freezing-thawing cycle condition[J].Journal of Shenyang University of Technology,2011,33(4):462-467. |
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| Authors: | WANG Zhen-shuang WANG Li-jiu |
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| Affiliation: | WANG Zhen-shuang1,2,WANG Li-jiu1(1.Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,China,2.Architectural and Civil Engineering Institute,Northeast Dianli University,Jilin 132012,China) |
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| Abstract: | In order to analyze the influnce of fly ash on the concret permeability under freezing-thawing cycle condition,the fly ash was used to replace the cement equivalently with mixing contents of 10%,20% and 30%,and the water-binder ratios of 0.42 and 0.35 were adopted in the experiment.The freezeing-thawing cycle and alternating current permeability tests were carried out for the concrete with different mixing contents of fly ash,and the results were compared with those of ordinary concrete.The experimental res... |
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| Keywords: | freezing-thawing cycle fly ash permeability freezing resistance mass loss relative dynamic elastic modulus permeation resistance permeation resistance loss |
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