Experimental Study on the Impermeability of Modified Cement-based Permeable Crystalline Waterproof Material Enhanced by Active Agent
In order to optimize the impermeability of cement,the paper tested the impermeability of different types of cement materials,deter-mined the best mix of cement materials and verified its impermeability effect.The results show that the impermeability pressure of cement with-out any additive is 0.4MPa,and the impermeability pressure of cement with silica fume is increased by 25%.With the increase of anhydrous sodium carbonate,glycine and anhydrous sodium carbonate,the impermeability pressure ratio and compressive strength ratio of cement-based materials increased first and then decreased.The optimal anhydrous sodium carbonate content was 8%,glycine content was 4%and magnesi-um oxide content was 8%.The permeability resistance,water absorption and compressive strength of cement-based materials can be effectively enhanced by adding reasonable additives.
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