Color changing water permeable brick

Abstract

The invention discloses a color changing water permeable brick which comprises a surface layer and a bottom layer. The surface layer and the bottom layer are tightly combined into a whole; the surfacelayer and the bottom layer each include an aggregate and a binder for bonding the aggregate; the aggregate is ceramic waste, shale tailings and coal gangue; the surface layer also includes color changing glass particles. The binder is composed of the following components by weight: 20-30 parts of boron mud, 10-15 parts of lithium feldspar and 8-15 parts of modified diatomite. With the ceramic waste, shale tailings and coal gangue as the aggregate, the use amount of the ceramic waste can be greatly reduced, current situation of the shortage of raw materials can be overcome and realization of industrial mass production is facilitated. By optimization of the component design and the reasonable component proportion, a compact and proper-porosity brick blank microstructure is more conducive toform, and the compressive strength and the water permeability of the finished water permeable brick can be effectively improved. The water permeable brick has a color changing effect on environmentalillumination or temperature change, and the decorative effect of the water permeable brick is enriched.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a color-changing permeable brick. Background technique [0002] At present, cement, asphalt, marble and other non-permeable materials are mostly used in urban construction to pave the ground. These hardened pavements make it difficult to exchange heat and moisture between the ground surface and the air, and the ability to naturally adjust the temperature and humidity of the urban ground is very poor, and the surface absorbs heat. Difficulties, resulting in a large amount of waste heat in the urban space, and a large amount of reflection on the ground to radiate solar heat, which leads to the phenomenon that the nighttime temperature in the city is higher than that in the suburbs. Moreover, in rainy days, the hardened pavement will prevent rainwater from infiltrating directly into the ground, causing water to accumulate everywhere, affecting the comfort and safety of the road. T...

AI Technical Summary

Problems solved by technology

[0004] The pursuit of the quality of permeable bricks is still the direction that researchers who use permeable building materials are constantly pursuing. CN107141011A discloses a color-changing permeable brick with a pore gradient structure and a preparation method thereof, so that the permeable brick has the ability to resist ambient light or temperature changes. The discoloration effect enriches the decorative effect of the permeable brick, but the water permeability and compressive strength of the permeable brick still need to be improved