Title:
Accelerated Testing of Chloride Diffusivity in Cement Based Materials: New Test Operating Mode
Author(s):
A.B. Ammar, J.M. Loche and
P. Dumargue
Publication:
Symposium Paper
Volume:
179
Issue:
Appears on pages(s):
587-604
Keywords:
absorption; chlorides; conductivity; diffusion; double layer; electrical
properties
DOI:
10.14359/6062
Date:
6/1/1998
Abstract:
Penetration of aggressive ions, such as chlorides, through concrete is one of the factors which causes to the depassivation of reinforcement and therefore may shorten the service life of a reinforced concrete structure. Most research work focusing on natural or accelerated diffusion tests generally rely on the validity of Fick’s laws. In this paper, we present both a new accelerated diffusion cell and an original test operating mode. The theoretical approach is based upon the study of diffusion-migration mechanism within the pore solution. The experimental results presented here have been obtained with tests on samples of saturated mortar.