Study on composition design and performance of pervious concrete
The design refers to the gradation design requirements of ATPB open-graded asphalt stabilized gravel drainage base.The mix ratio of pervious concrete is determined by the combination of calculation and test,and the performance of different porosity of pervious concrete is explored.The results show that the mechanical properties of pervious concrete decrease with the increase of porosity.The permeability coefficient increases with the increase of porosity.When the design porosity of pervious concrete is 18％,the compressive strength and flexural strength are 22.3 MPa and 3.6 MPa respectively,and the permeability coefficient is 1.63 mm/s,which meets the requirements of pervious concrete strength not less than C20 and porosity not less than 15％.
万方数据
维普
