Design Method of Novel Recycled Pervious Concrete forResisting Rainstorm and Waterlogging

Abstract

Abstract: Paving pervious concrete pavement is an effective way to reduce the urban rainstorm waterlogging disaster.To realize the rational application of pervious concrete pavement under different rainstorm grades,improve the utilization rate of renewable resources,and achieve the purpose of resisting rainstorm and waterlogging,a novel design method of recycled pervious concrete was proposed.The quantitative relationships between porosities and rainstorm grades were established,and the optimum porosity ranges of recycled pervious concrete which can resist different rainstorm grades were determined.Based on the relationship between porosity and strength,the strength grade of concrete was defined and then the mix proportions were designed.The mechanical strength and rainstorm simulation tests of the novel recycled pervious concrete were verified and analyzed.The results show that the compressive and flexural strength of recycled pervious concrete with different porosities meet the requirements of pervious concrete pavement.This concrete possesses excellent resisting rainstorm and waterlogging performance as well.The design method of the novel recycled pervious concrete for resisting rainstorm and waterlogging provides a reliable basis for the design of pervious concrete pavement in different regions (under different rainstorm grades).

Key words: pervious concrete, porosity, rainstorm grade, permeability coefficient, urban waterlogging

CLC Number:

TU528

NIU Zhigang, ZHU Pinghua, CHEN Chunhong, WANG Xinjie, LIU Hui. Design Method of Novel Recycled Pervious Concrete forResisting Rainstorm and Waterlogging[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(1): 106-112.

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