A self-cleaning water permeable brick manufactured from rare earth fine tail sand and a manufacturing method thereof

Abstract

A self-cleaning water permeable brick manufactured from rare earth fine tail sand is disclosed. Peanut vines are carbonized and then ground at room temperature. Pore surfaces adsorb a photocatalytic material that is nanometer titanium dioxide. Hydroxyl free radicals, super-oxygen ion free radicals and H2O free radicals are generated during light irradiation, have strong oxidation and degradation capabilities, can directly oxidize various organic matters into CO2, H2O and other inorganic small molecules, can degrade automobile exhaust in air when being used in the water permeable brick, have high adsorbability, and can effectively clean pollutants in water. Modified sugar filtration mud is adopted as a pore-forming agent. The rare earth fine tail sand, blast furnace slag and coal gangue are adopted as aggregates so that reutilization of rear earth waste resources is achieved and the self-cleaning water permeable brick having good water permeability, good water-retaining properties and high strength is obtained, thus facilitating environment protection, and promoting industrial and regional economic and urbanization development.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a self-cleaning permeable brick prepared from rare earth fine tailings 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 compr...

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.