Permeability of Concrete Containing Air-entraining and Mineral Admixtures

In this paper, the performance of concrete is studied through different water-cement ratio, different air-content, different mineral admixtures, different admixture contents, examined the mechanical properties of concrete, electric flux and chloride ion penetration depth of different mix concrete. The results show that, decreasing w/c ratio, proper air content, adding mineral admixtures can improve the resistance of chloride-permeation. Within some contents, the chloride-permeation resistance using suicides is better than that of fly-ash or slag. On this basis, the proper scheme of mix ratio used in saline area is recommended: the air-content is 3%similar to 5%, the content of fly-ash or slag is 20%similar to 30%, the content of silicides is 6%similar to 8%, and double mixed with suicides.