Abstract
This paper presents a preliminary investigation on dry shrinkage, frost resistance and permeability of rubber included concrete. The results show that rubber particles from waste tires are beneficial to reduction of dry shrinkage of cement mortars due to their soft characteristics. The addition of rubber powder in cement concrete can greatly improve frost resistance of concrete. However, coarse rubber particles (3~4 mm in diameter) seem to have little positive effect to frost resistance. The addition of proper amount of rubber in concrete can reduce permeability of concrete, but excessive rubber can have negative effect.
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