混凝土渗透性的原位测试与评价

山东大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (5): 74-79.

混凝土渗透性的原位测试与评价

王甲春1,张照华2,苏宁3

1.厦门理工学院土木工程与建筑系, 福建厦门 361024; 2.集美大学工程技术学院, 福建厦门 361021;
3.厦门市捷航建筑工程质量检测有限公司, 福建厦门 361006

收稿日期:2013-01-15 出版日期:2013-10-20 发布日期:2013-01-15
作者简介:王甲春(1972- ),男,吉林镇赉人,副教授,博士,主要研究方向为混凝土材料耐久性测试与评价. E-mail:jchwang@xmut.edu.cn

In situ testing and evaluation of the permeability of concrete

WANG Jia-chun1, ZHANG Zhao-hua2, SHU Ning3

1. Civil Engineering Department, Xiamen Technology University, Xiamen 361024, China;
2. Engineering Technology School，Jimei University, Xiamen 361021, China;
3. Jiehang Building Testing Company of Xiamen, Xiamen 361006, China

Received:2013-01-15 Online:2013-10-20 Published:2013-01-15
Supported by:
中国博士后基金资助项目(20060400284);福建省自然科学基金资助项目(2008J0171);厦门市科技计划资助项目(3502Z20113033)

摘要/Abstract

摘要：

利用离子迁移实验和混凝土表面电阻率两种实验方法原位测试5种钢筋混凝土箱梁保护层混凝土的氯离子扩散系数和混凝土表面电阻率,讨论原位测试结果与实验室里ASTM C1202电通量测量值的相关性,建立保护层混凝土氯离子扩散系数与混凝土表面电阻率之间的数学关系式,利用原位测试的氯离子扩散系数评价了钢筋混凝土箱梁在海洋环境条件中的使用寿命。研究结果表明,在稳态下混凝土结构表面保护层混凝土的氯离子扩散系数和混凝土表面电阻率与6h电通量具有较好的相关性,可以采用离子迁移实验和混凝土表面电阻率两种实验方法进行在原位测试和评价混凝土的渗透性,混凝土表面电阻率在工程应用上更为简便。

关键词: 混凝土保护层, 氯离子扩散系数, 混凝土表面电阻率, 原位, 渗透性, 耐久性

Abstract:

With Permit ion migration experiments and concrete surface resistivity test the chloride ion diffusion coefficient and the concrete surface resistivity of the five concretes were measured and the relation between in situ results and ASTM C1202 electric flux for 6h in the laboratory were analyzed. The mathematical relationship between a protective layer of concrete chloride ion diffusion coefficient and surface resistivity of concrete was established, and the service life of reinforced concrete beams was calculated by in situ testing results under the marine environment. The results showed that there was good correlation between the concrete surface resistivity of the concrete cover, in the steady state the action of chloride diffusion coefficient and 6 h charge. Permit experiments and the concrete surface resistivity were tested and evaluated the permeability of the concrete in situ, and concrete surface resistivity was easy in engineering applications.

Key words: concrete cover, chloride diffusion coefficient, concrete surface resistivity, in situ, permeability, durability

中图分类号:

TU528

王甲春1,张照华2,苏宁3. 混凝土渗透性的原位测试与评价[J]. 山东大学学报(工学版), 2013, 43(5): 74-79.

WANG Jia-chun1, ZHANG Zhao-hua2, SHU Ning3. In situ testing and evaluation of the permeability of concrete[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2013, 43(5): 74-79.

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