Method for preparing high-strength water-permeable brick by compounding gangue steel slag and wheat straw ash

Abstract

The invention discloses a method for preparing a high-strength water-permeable brick by compounding gangue steel slag and wheat straw ash. The method comprises the following steps: sieving gangue andsteel slag according to grain diameter, with the sieved gangue and steel slag as aggregates on the surface layer and the bottom layer of a water-permeable brick correspondingly, carbonizing wheat straws in a carbonizing furnace, mixing with resin, and performing surface modification on the aggregates on the surface layers. The strength and the wear resistance of concrete can be greatly enhanced within the proper mixing amount range, the specific gravity of the water-permeable brick is greatly reduced, high adaptability in the processes of transportation, construction and the like is achieved,and the effect of synergistically improving the strength and the water permeability of the sand-based water-permeable brick is achieved; for the treatment on the aggregate on the bottom layer, rollerrolling is adopted to reduce the influence on the quality performance of the material caused by physical friction, silt on the surfaces of the aggregates can be shaken off, crack-containing particlescan be completely eliminated, and the forming strength of the brick body can be enhanced; and the concrete water-permeable brick with high strength and excellent wear resistance can be prepared, sintering is avoided, and the use strength and high water permeability of the water-permeable brick can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of permeable bricks, in particular to a method for preparing high-strength permeable bricks by compounding coal gangue and steel slag with wheat straw ash. Background technique [0002] With the acceleration of urbanization, the urban surface is gradually being covered by buildings and various concrete and other water-repelling materials, and the proportion of impermeable areas has increased significantly, and the coverage rate in some areas has exceeded 80%. As the drainage capacity of cities is getting worse and worse, when many cities encounter heavy rains, the rainwater on the roads cannot seep quickly, which can easily cause urban waterlogging. Therefore, in order to solve the problem of urban surface hardening, create a high-quality natural living environment, and maintain urban ecological balance, a new green and environmentally friendly building material product-permeable bricks emerged as the times ...

AI Technical Summary

Problems solved by technology

The permeable bricks prepared from these raw materials generally need to be sintered at a high temperature of 1000-1400°C, which wastes fossil fuels and produces industrial waste gas that causes air pollution.