| 复合外掺料高性能混凝土的氯离子扩散性能 |
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| 引用本文： | 陈正,杨绿峰,王燚,冯庆革.复合外掺料高性能混凝土的氯离子扩散性能[J].广西大学学报(自然科学版),2010,35(6). |
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| 作者姓名： | 陈正 杨绿峰 王燚 冯庆革 |
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| 作者单位： | 广西大学工程防灾与结构安全教育部重点实验室;广西大学土木建筑工程学院;广西大学环境学院; |
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| 基金项目： | 国家自然科学基金资助项目，广西科技开发计划课题资助项目，广西大学科研基金资助项目 |
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| 摘 要： | 为研究复合矿物外掺料对高性能混凝土抗氯离子扩散性能的影响,分别制备单掺、双掺及三掺矿物外掺料的高性能混凝土试件,通过开展6 h快速氯离子扩散实验(ASTM C1202),测试高性能混凝土中不同深度处的总氯离子和自由氯离子的含量,并据此计算不同深度处固化氯离子的含量。实验结果表明,复合掺加粉煤灰、硅灰和矿渣的高性能混凝土的6 h电通量最少,且其内部的总氯离子和自由氯离子含量最低,具有最佳抗氯离子扩散能力;复合掺加矿物外掺料可以提高混凝土中固化氯离子的比例,降低混凝土结构中钢筋的锈蚀概率,延长其服役寿命。
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| 关 键 词： | 高性能混凝土 复合外掺料 氯离子扩散 |
Influence of compound admixture on chloride diffusion in high-performance concrete |
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| CHEN Zheng,YANG LuFeng,WANG Yi,FENG Qing-ge.Influence of compound admixture on chloride diffusion in high-performance concrete[J].Journal of Guangxi University(Natural Science Edition),2010,35(6). |
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| Authors: | CHEN Zheng YANG LuFeng WANG Yi FENG Qing-ge |
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| Institution: | CHEN Zheng1,2,YANG LuFeng1,WANG Yi1,FENG Qing-ge1,3(1.Key Laboratory of Ministry of Education for Disaster Prevention and Structural Safety,Guangxi University,Nanning 530004,China,2.College of Civil Engineering and Architecture,3.College of Environment,China) |
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| Abstract: | The influence of compound admixture on chloride diffusion in high-performance concrete(HPC) was investigated.The distribution of the total and free chloride in HPC specimens with compound admixture was determined after 6 h ASTM C1202 experimentation,and the distribution of the bound chloride was studied.The experimental results show that the chloride diffusion resistance and durability of the HPC with fly ash,blast furnace slag and silica fume are better than those with fly ash and silica fume and those wit... |
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| Keywords: | high-performance concrete compound admixture chloride diffusion |
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