Freezing resistant self-cleaning water permeable bricks and preparation method thereof

Abstract

The invention discloses freezing resistant self-cleaning water permeable bricks. The freezing resistant self-cleaning water permeable bricks have the advantages that blue-green algae dry powder and reed stalks are ground at room temperature after undergoing carbonization treatment; the pore surface adsorbs a photocatalytic material nano-titania; hydroxyl radicals, superoxide ion radicals and H2O radicals generated through exposure of nano-titania to light have strong oxidizing and decomposing capacities and are used for directly oxidizing various organic matters into inorganic small molecules, such as CO2 and H2O; the inorganic small molecules not only can conduce to degrading automobile exhaust, and the like in the atmosphere but also have stronger adsorbability after being applied to the water permeable bricks; the water permeable bricks prepared by using modified sugar filter mud as a pore-forming agent and zirconia-mullite and sodium bentonite as aggregates, adding the components, such as polystyrene foam particles and graphene oxide, and carrying out high temperature sintering have high porosity and excellent self-cleaning effects and have the advantages of freezing resistance, good water permeability and realization of waste residue recycling.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a frost-resistant self-cleaning permeable brick and a manufacturing method thereof. Background technique [0002] With the continuous shortage of urban water resources and the pursuit of humanization of the urban environment, the research and development of permeable bricks has attracted extensive attention from experts in materials, environment and municipal engineering. Permeable bricks have good water permeability and moisture retention, which can well alleviate the "urban desertification" and "heat island effect" caused by the city being covered by non-permeable ground pavement. It can also alleviate urban waterlogging to a certain extent and replenish urban groundwater. , regulate the urban environment, and help maintain the urban water balance. Existing permeable bricks are developing towards high density and high strength, and their compressive strength is rela...

AI Technical Summary

Problems solved by technology

Existing permeable bricks are developing towards high density and high strength, and their compressive strength is relatively high, but there are still many defects. On the one hand, the water permeability is very poor. Even if there are bricks with good water permeability, their compressive strength can reach It does not meet the pavement requirements. At the same time, after long-term use of permeable bricks, the surface and pores are easy to fall into various dirt to form blockages and cannot be automatically cleared, which weakens the permeable effect, poor ecological effect, and the requirements for drainage facilities during use. Higher, if the drainage is not smooth after the rain, it is easy to cause water accumulation

On the other hand, the function of the permeable bricks produced by the existing technology is relatively single. They simply allow precipitation to penetrate into the ground through the brick body, and cannot effectively remove the pollutants contained in the water, and cannot purify the sewage that passes through the brick body.