摘要
The resin-sand mixture was proposed to be used as the surface course,and cement permeable concrete was used as the base course;such two kinds of materials were combined to prepare water-permeable brick with a composite structure.The compressive strength,flexural strength,and permeability were studied by using adjusting the contents of carbon fiber,quartz powder,cement,sand,and surfactant.The study shows that the hydrophilicity of the resin-sand mixture can be improved after any amount of resin is replaced by quartz powder;by using the surfactant,the interface energy of the particles can be reduced so that the water permeability of the surface course can be promoted effectively.However,the mechanical properties of the surface course were negatively affected by the surfactant.With the optimal process consideration in the experiments,the properties about compressive strength,flexural strength,and permeability of the composite permeable brick can meet the requirements of the specifications of resin-sand based water permeable brick JGT 376-2012(compressive strength was higher than 35 MPa,the flexural strength exceeded 5.19 MPa,and the average permeability coefficient was higher than 2.3×10^(-2)cm/s).There are no obvious pores on the surface course and only water molecules can pass through it,therefore,the surface of the permeable brick cannot be blocked up by solid substances,and the permeability of such permeable brick can be improved effectively in this way.
作者
WANG Haifeng
LIU Yang
MEI Zhen
王海峰;LIU Yang;MEI Zhen(College of Civil Engineering,Huaqiao University,Xiamen 361021,China;Higher-educational Engineering Research Centre for Intelligence and Automation in Construction of Fujian Province,College of Civil Engineering,Huaqiao University,Xiamen 361021,China)
基金
Funded by the Natural Science Foundation of Fujian Province(No.2016J01241)
the National Natural Science Foundation of China(No.51608212)
the Education Department of Fujian Province(No.JA14024)。
