A direct method for determining chloride diffusion coefficient by using migration test

被引：68
|
作者：
Friedmann, H [1 ]
Amiri, O [1 ]
Aït-Mokhtar, A [1 ]
Dumargue, P [1 ]
机构：
[1] Univ La Rochelle, LEPTAB, F-17042 La Rochelle 1, France
来源：
CEMENT AND CONCRETE RESEARCH | 2004年 / 34卷 / 11期
关键词：
analytical model; chloride; electroneutrality; migration; cement mortar;
D O I：
10.1016/j.cemconres.2004.01.009
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Calculation of the effective diffusion coefficient is proposed using an analytical model based on Nernst-Planck equation, on electroneutrality and on measurements of current intensity. To validate this approach, migration tests were carried out on different w/c mortar samples. In steady state, the resulting effective diffusion coefficients are larger than those usually obtained with models based on Nernst-Planck equation without electroneutrality. An explanation of these differences and the importance of electroneutrality are discussed in the present work. (C) 2004 Published by Elsevier Ltd.
引用
收藏
页码：1967 / 1973
页数：7
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