Porous concrete is an eco-concrete with high porosity and high strength

whose application was restricted to some extent

because there is lack of appropriate and unitive mixing design method.According to the features of porous concrete

proportion design idea of porous concrete whose major design parameter was porosity and strength was satisfied by changing variety of cementing material and aggregate size.The design method of porous concrete was that the raw materials were selected according to design requirement at first

secondly

aggregate dosage per unit volume of porous concrete was calculated

thirdly

dosage of cementing material was calculated by apparent density of aggregate and porosity of design requirement

finally

cement dosage of the unit physical volume and water dosage were calculated by water cement ratio deter mined by requirement of forming process.The test result indicated that this mixing design method of porous concrete was reliable and feasible.