Abstract
In order to prepare C30 permeable concrete, the effects of water-cement ratio, mixing method, forming process and curing method on the porosity, permeability coefficient and compressive strength of permeable concrete were investigated. The permeable concrete was applied by SEM and XRD. The microstructure and chemical composition of the cemented layer were analyzed. The results show that when the amount of other ingredients is the same, increasing the amount of cement can effectively improve the strength; the mixing method of cement stone can enhance the bond between the aggregate and the cemented material; with the increase of vibration time, the compressive strength of the permeable concrete Gradually increase, but the vibration time is too long, there will be a phenomenon of sedimentation; in the early stage of conservation, the water conservation can make the hydration reaction fully; 28d permeable concrete sample hydration reaction is more thorough, generating a large amount of CSH gel.
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