Study on Mix Proportion Design of Pervious Concrete Based on Waste Plastic Fiber
Waste plastic fiber has good mechanical properties,which can reduce the shrinkage cracks of concrete.Based on this,8 groups of gradation were selects,3％waste plastic fiber was mixed.The optimal water cement ratio,cement aggregate ratio and gradation of pervious concrete were determined,by measuring the mechanical properties and porosity of pervious concrete specimens.The test results showed that,when the water-cement ratio was 0.28,the flexural strength and compressive strength of concrete were the largest.When the ash-aggregate ratio was 0.24,the flexural strength and compressive strength of concrete were reached the maximum value.The compressive strength,flexural strength and void ratio of 3# grading concrete are optimal.
万方数据
维普
