不同砂率对混凝土透水砖性能的试验研究

Experimental Study on Performance of Concrete Permeable Brick with Different Sand Ratio

为探究混凝土透水砖中掺入中砂对其性能的影响,对中砂掺量为0、10%、20%、30%且水胶比分别为0.26、0.28、0.30的混凝土透水砖进行了强度试验,并分别对试件进行透水性能试验,得到混凝土透水砖强度和透水性能与砂率掺量和水胶比间的关系。结果表明:高砂率会使透水性能降低,抗压强度提高;低水胶比能使抗压强度提高;综合考虑强度和透水性能,10%砂率和0.28的水胶比为最优配合比。

In order to explore the influence of adding medium sand into the concrete permeable brick on its performance,the strength tests of concrete permeable brick with medium sand content of 0,10%,20%,30%and water-binder ratio of 0.26,0.28 and 0.30 were carried out.The permeability tests of the specimens were carried out respectively,and the relationship between the strength and permeability of concrete permeable brick and the sand ratio and waterbinder ratio was obtained.The results show that the high sand ratio can reduce the water permeability and increase the compressive strength;the low water binder ratio can improve the compressive strength;considering the strength and water permeability,10%sand ratio and 0.28 water-binder ratio are the optimal mix ratio.