Study on Influence of Mineral Admixture on Chloride Ion Penetration and Diffusion in Concrete
Xie JianXiong;Li XiaoZheng;Liao JiaQing;Yang ChangHui;Wang Chong
DOI:10.11835/j.issn.1674-4764.2005.03.034
Received February 22, 2005,Revised February 22, 2005, Accepted , Available online July 01, 2015
Volume ,2005,Pages 89-92
- Abstract
In this paper, the influences of different kinds and different amount of mineral admixture to Cl-penetration and diffusion in concrete are studied. The results of experiment show that separate addition of mineral admixture (ground fly ash, slag fines, silica fume) into concrete can improve its resistance to chloride ion penetration and diffusion. Furthermore,the effect of silica fume is the best, fly ash second, and then follows slag fines. Mechanism analysis shows that the pozzolanic effect of mineral admixture improves the interface between the cement and aggregate in concrete, reduces the total porosity, makes pores more smaller, on the other hand it increases the Cl-consolidation capability of concrete with low alkaline C-S-H gel produced. So the resistance to chloride ion penetration of concrete is improved.