Abstract:
Experimental study on the performance of hydraulic concrete with different amount of cementitious calillary crystalline waterproofing material(CCCW) is carried out. The influence of the amount of CCCW on the performance parameters of hydraulic concrete, such as compressive strength, tensile strength, compressive and tensile modulus of elasticity, ultimate tensile strain value, water seepage height, freeze-thaw mass loss rate and relative dynamic modulus were analyzed. The results show that infiltration crystallization can significantly improve the performance of hydraulic concrete. When the content of CCCW is 1. 2%, the increase of compressive strength, tensile strength and compressive tensile elastic modulus of hydraulic concrete reaches the maximum. When the content of CCCW is 0. 6%, the increase of the ultimate tensile strain of concrete reaches the maximum. When the content of CCCW increases in the range of0% ~ 1. 2%, the water seepage height and mass loss rate of concrete are reduced to varying degrees, and the relative dynamic modulus is improved to varying degrees. The research results can provide reference for the mix proportion design and engineering application of permeable crystalline concrete.