Environment-friendly water permeable brick as well as compression forming mould and preparation method for preparing environment-friendly water permeable brick

Abstract

The invention provides an environment-friendly water permeable brick as well as a compression forming mould and a preparation method for preparing the environment-friendly water permeable brick. The water permeable brick is formed by a water permeable brick surface layer and a water permeable brick base layer, wherein materials of the surface layer mainly comprise sand with the particle size being 10 to 20 mesh and cement; materials of the base layer mainly comprise large gravel with the particle size being 3 to 8mm and cement. The method specifically the steps of adding the materials into two stirring machines respectively, adding other materials of corresponding formulas for evenly stirring, then compressing by a brick compression forming machine, distributing the base layer materials twice and the surface layer materials once in a lower mould hollow part of the compression forming mould, performing shaking compression for 2 to 3s after each time of material distribution, thus preparing a formed green brick, and then performing curing to form the water permeable brick. A dry-press forming process is adopted to prepare the water permeable brick, so that the production cost and the energy consumption are reduced; the prepared water permeable brick has good water permeability, abrasion performance, skid resistance and crushing resistance.

Description

technical field [0001] The invention relates to the field of building material manufacturing, in particular to an environment-friendly permeable brick, a pressing mold and a preparation method for preparing the permeable brick. 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 is increasing significantly. In some areas, the coverage rate has exceeded 80%, especially in some urban squares. The floors of commercial streets, sidewalks, community activities, parking lots, etc. are mainly paved with impermeable materials such as granite, marble, glazed tiles, cement and asphalt. In the event of heavy rain, the impermeable ground completely prevents the rainwater from directly penetrating into the ground, which can easily cause urban waterlogging, and the accumulation of water on the ground makes people's tra...

AI Technical Summary

Problems solved by technology

Although the cost of concrete permeable bricks is low, the particles on the surface of existing concrete permeable bricks are coarse (generally, the aggregate particle size is 3mm-6mm), and the large pores on the surface are permeable, and the porosity is above 20%, which is easy to be blocked by dust , so it cannot maintain high water permeability continuously; and because of the large gap, its water filtration effect is also poor

[0004] There are also a small number of environmentally friendly permeable bricks made of desert sand, but the desert is too far away from the city where we live, so it is very difficult to obtain materials, so the environmentally friendly permeable bricks produced with them are expensive, so they are not accepted by municipal roads.

There are also various environmentally friendly permeable bricks, most of which use waste materials as aggregates, such as steel slag, etc., but these permeable bricks generally have defects such as low strength, poor water permeability or poor wear resistance.

In addition, since there are many kinds of harmful substances in the air, when it rains, they fall to the ground with the rainwater, and then penetrate into the groundwater, thereby polluting the water quality of the groundwater. However, the permeable bricks in the prior art are not effective. effectively remove harmful substances that seep into groundwater

Images