| 混凝土抗氯离子渗透特征参数研究 |
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| 引用本文： | 何富强,史才军,陈昌萍,安晓鹏,童柏辉. 混凝土抗氯离子渗透特征参数研究[J]. 厦门理工学院学报, 2011, 19(4): 61-65 |
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| 作者姓名： | 何富强 史才军 陈昌萍 安晓鹏 童柏辉 |
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| 作者单位： | 1. 厦门理工学院土木工程与建筑系,福建厦门,361024
2. 湖南大学土木工程学院,湖南长沙,410082 |
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| 基金项目： | 国家自然科学基金项目，厦门市科技局计划项目 |
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| 摘 要： | 基于硝酸银显色法测量,研究了氯离子变色深度、非稳态电迁移系数、初始电流与6 h电通量等混凝土抗氯离子渗透特征参数.结果表明:当初始电流小于80 mA或6 h电通量小于2 000 C时,变色深度与6 h电通量、初始电流与6 h电通量均有良好的线性关系,初始电流与变色深度之间的关系为Xd=0.15Iinitinal.通过测试初始电流,可以快速测估氯离子变色深度与6 h电通量.非稳态电迁移系数与6 h电通量不总是存在良好的相关性,不能用电通量的值来衡量氯离子在混凝土中的迁移特性.
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| 关 键 词： | 混凝土 氯离子渗透 特征参数 硝酸银显色法 |
Investigation on Characteristic Parameters of Chloride Resistance of Concrete |
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| HE Fu-qiang,SHI Cai-jun,CHEN Chang-ping,AN Xiao-peng,TONG Bai-hui. Investigation on Characteristic Parameters of Chloride Resistance of Concrete[J]. Journal of Xiamen University of Technology, 2011, 19(4): 61-65 |
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| Authors: | HE Fu-qiang SHI Cai-jun CHEN Chang-ping AN Xiao-peng TONG Bai-hui |
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| Affiliation: | 1. Faculty of Civil Engineering and Architecture, Xiamen University of Technology, Xiamen 361024, China; 2. College of Civil Engineering, Hunan University, Changsha 410082, China) |
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| Abstract: | Based on measurement of AgNO3 colorimetric method, characteristic parameters of chloride resistance of concrete, such as chloride color change depth （Xd）, non-steady state migration coefficient （ Dnssm）, initial current（Iinitial） and 6h charge passed （ PC-6h）, were investigated. Results indicate that when Iinitinal is less than 80 mA or 6PC-6h is less than 2 000C, there is good linear correlation between Xa and PC-6h as well as Iinitial and PC-6h-Xd =0. 15Iinitinal. Through measurement of Iinitial, Xd and PC-6h can be rapidly predicted. There is not always good correlation between Dnssmm and PC-6h, and so PC-6h can＇t be used for measurement of chloride migration property in concrete. |
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| Keywords: | concrete chloride penetration characteristic parameter AgNO3 colorimetric method |
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