| NaCl除冰盐作用下混凝土的抗冻能力分析 |
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| 引用本文： | 张云清,王甲春,余红发. NaCl除冰盐作用下混凝土的抗冻能力分析[J]. 混凝土, 2009, 0(9). DOI: 10.3969/j.issn.1002-3550.2009.09.029 |
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| 作者姓名： | 张云清 王甲春 余红发 |
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| 作者单位： | 南京航空航天大学土木工程系,江苏,南京,210016;南京航空航天大学土木工程系,江苏,南京,210016;厦门理工学院建筑工程系,福建,厦门,361024 |
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| 基金项目： | 中国博士后基金，南京航空航天大学博士生创新基金 |
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| 摘 要： | 通过存质量浓度为3.5%的NaCl溶液中的冻融循环试验,测试了普通混凝土、引气混凝土、粉煤灰混凝土和硅灰混凝土的相对动弹性模量和质量损失率,分析了不同混凝土的抗盐冻的能力.结果表明:适当的引气能够明显改善混凝土的抗盐冻性能,掺加20%粉煤灰时,混凝土仍具有较高的抗盐冻能力,掺量达到40%时混凝土的抗盐冻性能明显下降,掺加10%硅灰明显提高混凝土的抗盐冻能力.
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| 关 键 词： | 混凝土 除冰盐 引气 硅灰 |
Salt freezing resistance of concrete subjected to the NaCl deicing salt |
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| ZHANG Yun-qing,WANG Jia-chun,YU Hong-fa. Salt freezing resistance of concrete subjected to the NaCl deicing salt[J]. Concrete, 2009, 0(9). DOI: 10.3969/j.issn.1002-3550.2009.09.029 |
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| Authors: | ZHANG Yun-qing WANG Jia-chun YU Hong-fa |
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| Affiliation: | 1.Department of Civil Engineering;Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China;2.Department of Construction Engineering;Xiamen University of Technology;Xiamen 361024;China |
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| Abstract: | The various situation of salt freezing resistance of ordinary Portland cement concrete(OPC),air-entrained Portland cement concrete,fly ash concrete and silica fume concrete specimens subjected to the action of 3.5%(in mass) sodium chloride(NaCl) solution were studied by the accelerated freezing method.The relative dynamic elastic modulus and mass loss of concretes are measured.The results show that the proper entrained air in concrete can enhance the salt-freezing-resistance ability.The salt-freezing-resist... |
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| Keywords: | concrete deicing salt air-entrained silica fume |
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