Environmental protection color pavement bricks and their production method

Abstract

An environmentally protection type color pavior brick for sidewalk is composed of the bottom layer prepared from broken stone, sand, cinder, silicate rock powder, active alumine, hydrogen peroxide, polyvinyl alcohol, water cement and calcium lignosulfonate, and the surface layer prepared from high-grade cement, iron oxide pigment, barium sulfate, white broken stone or sand, cinder, active alumine, hydrogen peroxide, vinyl alcohol, water and carbon black or zinc oxide. Its advantages are high penetability to rain and oil, high absorptivity to UV and irradiated heat, and high strength.

Description

Technical field: [0001] The invention relates to a building material, in particular to a pavement brick for urban sidewalks. Background technique: [0002] At present, the pavement bricks laid on urban sidewalks are mainly dense mortar concrete structures, which are divided into two types: one is colored glazed bricks, which feature bright and bright surfaces. However, its production cost is high, and it cannot be maintained with water in order to protect the bright color of the surface. In addition, it has the disadvantages of poor strength and short service life. The other is machine-pressed brick, with rough surface and dull color. The reason for the dull color is that the cement slurry overflows and mixes with the color during production. They are added at one time, regardless of the surface layer, resulting in a waste of pigments; due to the lack of compactness during machine pressing, the voids in the brick body are large, resulting in serious water seepage, similar ...

AI Technical Summary

Problems solved by technology

They add materials at one time, regardless of the surface layer, resulting in waste of pigments; due to the lack of compactness during machine pressing, the brick body has large gaps, resulting in serious water seepage, similar to water seepage

There are also disadvantages such as not wear-resistant and not frost-resistant

Due to the large-scale use of the above-mentioned pavement bricks to lay hard pavements in cities, the phenomenon of underground water shortage in large cities has caused the growth of trees and flowers to be sluggish, and the urban ecological environment has been affected to varying degrees.

In summer, solar radiation and pavement glazed reflections produce urban heat island effect; in winter, because of its impermeability, it is easy to freeze and not slippery, and in summer, it is easy to accumulate water, which brings a lot of inconvenience to pedestrians, and it will cause floods in heavy rain , the oil stains left by traffic vehicles will also rush into the river, causing secondary pollution

Extensive searches have been carried out for the above problems, but no technical solutions related to the present invention have been found