Abstract
Recycled concrete is a kind of heterogeneous nonuniform dielectric with high porosity and complicated internal structure, and the imperme ability of recycled concrete is much worse than that of ordinary concrete. To solve the seepage problem of recycled concrete, the effects from different strength of parent concrete, the ratio of recycled coarse aggregate, fly ash content and water gel ratio as the four aspects were studied by design orthogonal experiment. The results showed that the degree of influence on the impermeability of recycled concrete was from the large to small order: the ratio of water gels, the strength of the matrix concrete, the replacement rate of the recycled aggregate, and the fly ash content.
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