Experimental Research on Impermeability of Crumb Rubber Concrete

An exhaustive study should be carried on impermeability of crumb rubber concrete in this paper. The orthogonal experimental design method was used in mixture proportion design and considered three factors and four levels respectively. Tests were carried out to investigate the behavior of different concretes with water to cement ratio, rubber content and sand to coarse aggregate ratio (Sp). The research shows that appropriate proportional fine aggregate replaced by rubber powder can improve impermeability of concrete. Rubber content played most important role among them and water to cement ratio took second place. Sp had a little effect on permeability of rubber concrete.