| 海砂混凝土的抗氯离子性能研究 |
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| 引用本文： | 刘斯凤,孙振平,蒋正武,杨正宏.海砂混凝土的抗氯离子性能研究[J].新型建筑材料,2020(1):18-20,46. |
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| 作者姓名： | 刘斯凤 孙振平 蒋正武 杨正宏 |
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| 作者单位： | 同济大学材料科学与工程学院;同济大学先进土木工程材料教育部重点实验室;同济大学工程结构服役性能演化与控制教育部重点实验室 |
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| 基金项目： | “十三五”国家重点研发计划项目（2016YFC0701003-03）;中央高校基本科研业务费专项资金资助（22120180294） |
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| 摘 要： | 研究海砂中的氯离子含量对混凝土抗氯离子渗透性能的影响规律是制备抗钢筋锈蚀混凝土的基础。根据海砂中的氯离子含量不同,研究了水胶比对混凝土抗氯离子渗透性能的改善效应。结果表明:在氯离子含量分别为0、0.06%、0.12%、0.30%时,降低水胶比均能使海砂混凝土的电通量下降。当水胶比低于0.35时,海砂混凝土的电通量均可低于1000 C;水胶比相同且混凝土氯离子含量在0~0.30%时,氯离子含量越高,电通量越低,氯离子结合率越高。
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| 关 键 词： | 海砂混凝土 胶凝材料 水胶比 氯离子渗透性 |
Study on chloride resistance of sea sand concrete |
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| LIU Sifeng,SUN Zhenping,JIANG Zhengwu,YANG Zhenghong.Study on chloride resistance of sea sand concrete[J].New Building Materials,2020(1):18-20,46. |
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| Authors: | LIU Sifeng SUN Zhenping JIANG Zhengwu YANG Zhenghong |
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| Affiliation: | (School of Materials Science and Engineering,Tongji University,Shanghai 201804,China;Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education,Tongji University,Shanghai 201804,China;Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education,Tongji University,Shanghai 201804,China) |
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| Abstract: | The study of the effect of chloride ion content in sea sand on the resistance of concrete to chloride ion penetration is the basis for the preparation of anti-corrosion concrete.According to the different content of chloride ion in sea sand,this paper studies the improvement effect of water-to-binder ratio on the chloride ion permeability of concrete.The results show that when the chloride ion content is 0%,0.06%,0.12%,and 0.30%,decreasing water-to-binder ratio can reduce the electric flux of sea sand concrete.When the water-to-binder ratio is lower than 0.35,the electric flux of sea sand concrete can be less than 1000 C.When the water-to-binder ratio is the same and the chloride ion content of the concrete is between 0%and 0.30%,the higher the chloride ion content,the lower the electric flux,and the higher the chloride ion binding rate. |
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| Keywords: | sea sand concrete cementitious material water-to-binder ratio chloride ion permeability |
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