Research and development of mechanical properties of new drainage bricks

Abstract

The new type of drainage brick is an environmental protection paving materials, it is a kind of drainage brick with tapered hole made by special hole making process. It has good water vapor permeability and good “sound absorbing” function to reduce noise in the city. Its special tapered through-hole structure is conducive to solving the problem of easy plugging of the pores in the traditional water-permeable paving materials and has a certain purifying effect on the tail gas of automobiles. In view of the special structural design of the new drainage brick, the effects of the raw material ratio and the number of through-holes on the flexural strength, splitting tensile strength and water permeable performance were studied by laboratory tests. The results show that the special structural design of the new drainage brick can well solve the problem of mutual restriction between the strength and the water permeability of the traditional permeable brick and has the characteristics of high strength and strong water permeability. And by adjusting the number of bright holes, we can prepare different performances of drainage bricks to meet different needs.