On the relationship between pore structure and chloride diffusivity from accelerated chloride migration test in cement-based materials

被引：150
|
作者：
Yang, CC [1 ]
机构：
[1] Natl Taiwan Ocean Univ, Inst Mat Engn, Chilung 202, Taiwan
来源：
CEMENT AND CONCRETE RESEARCH | 2006年 / 36卷 / 07期
关键词：
chloride migration coefficient; steady-state; non-steady-state; mercury intrusion porosimetry; capillary pore;
D O I：
10.1016/j.cemconres.2006.03.007
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this study the electrochemical technique is applied to accelerate chloride ion migration in concrete to determine the chloride ions in anode cell, and the pore characteristic of the same mortars in concrete was obtained from the mercury intrusion porosimetry (MIP). The plain ordinary Portland cement and the constant aggregate with eight w/c ratios ranging from 0.3 to 0.65 were used. A good linear relationship between the steady-state migration coefficient and non-steady-state migration coefficient based on the same experimental setup and specimens was obtained. Both of the steady-state migration coefficient and non-steady-state migration coefficient were linearly related to the capillary pore volume and the critical pore diameter. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1304 / 1311
页数：8
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