A kind of high-strength permeable brick and its preparation method

Abstract

The invention discloses a high-strength water-permeable brick and a production method thereof; the high-strength water-permeable brick is produced by: ball-milling waste tempered glass to greater than 80 mesh, mixing the ball-milled tempered glass with waste gravel (60-80 mesh) and calcium carbonate powder (greater than 80 mesh), adding the mixture to a gypsum mold, heating to about 80 DEG C, demolding to form a base layer (48-50 mm in thickness), mixing cement, water and sand (30-60 mesh), mixing the mixture with activated carbon (greater than 60 mesh) to form a surface layer material, applying the surface layer material to the surface of the base layer, and curing to form a surface layer (3-5 mm in thickness); the high-strength water-permeable brick is > / =15*10<-2> cm / s in permeability coefficient, > / =2.2 g / cm<2> in water retention, and > / =25 MPa in compressive strength. The waste crushed tempered glass has high strength, can melt at low temperature, is sticky when in melt state and can react with calcium carbonate and the like to produce crystal when in melt state, sintering temperature is lowered and strength of the finished product is guaranteed; waste tempered glass and waste gravel are utilized secondarily; the produced water-permeable brick is green and economical and has good comprehensive properties.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a high-strength permeable brick and a preparation method thereof. Background technique [0002] Urban sidewalks and public activity areas are mostly paved with bricks to maintain the appearance and smoothness. Most of the existing ordinary bricks are made of clay and then sintered, and the water permeability is poor. When it rains, due to the hardening of the ground surface, the supplement of rainwater to groundwater is blocked, resulting in continuous surface subsidence. In addition, due to the rainwater when it rains Poor excretion and increased surface runoff can easily cause urban waterlogging. Permeable bricks have good water permeability and moisture retention, which can effectively alleviate the negative impact of impermeable hardened ground on urban ecology, so they have been widely used in urban ground construction instead of ordinary bricks. [0003] In the tradition...

AI Technical Summary

Problems solved by technology

[0003] In the traditional process, permeable bricks are made of slag waste and ceramic waste as raw materials. They are formed twice, fired at high temperature, and the sintering temperature is high (greater than 1000 ° C). The manufacturing process is complicated and the energy consumption is large. The means are accompanied by the reduction of mechanical strength, the product is easy to crack and break, and the performance is poor