Using charge passed to determine the chloride diffusion coefficient in mortar from accelerated chloride migration test

被引：12
|
作者：
Yang, CC [1 ]
Weng, TL [1 ]
机构：
[1] Natl Taiwan Ocean Univ, Inst Mat Engn, Chilung 202, Taiwan
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2003年 / 17卷 / 04期
关键词：
charge passed; diffusion coefficient; accelerated chloride migration test;
D O I：
10.1016/S0950-0618(03)00004-7
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this study, a method is proposed for determining the chloride diffusion coefficient in mortar from accelerated chloride migration test. The effective chloride diffusion coefficient is calculated on the basis of the Nernst-Planck equation. A good correlation is observed between the effective diffusion coefficient measured from the chloride ion concentration in the anode cell and that in the cathode cell. In order to avoid sampling and analyzing chlorides during the migration test, the linear portion of the charge passed is used to assess the steady state period, and the slope of the linear portion of the Q-time curve is used to determine the effective chloride diffusion coefficients in the anode and cathode cells. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：231 / 238
页数：8
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