Production process and formula of novel environment-friendly fly ash load-bearing brick

Abstract

The invention relates to a production process and a formula of a novel environment-friendly fly ash load-bearing brick; the used main raw materials are basically industrial waste materials which comprise, by weight, 30%-40% of fly ash, 15%-20% of calcium carbide slag, 30%-55% of electroslag, and 0.3%-0.8% of an activator. The production process comprises the following steps: firstly preparing the materials in proportion, stirring with water to form a mixture with a certain water content, adding the mixture into a brick machine for compression molding, finally laying a plastic film on the green brick after compression molding for moisture retention processing, and performing curing to obtain the finished product which meets national standards. According to the invention, industrial waste materials such as fly ash, calcium carbide slag and the like are used; processes of sintering or autoclaving are omitted; production raw materials such as cement or lime and the like are not necessary. The process is simple, free of pollution, zero in carbon discharge, and low in cost, and effectively improves the compressive and rupture strength of the brick, and the freezing-thawing indexes of the brick.

Description

technical field [0001] The invention relates to a new type of environmental protection building wall material, in particular to the production process and formula of a new type of environmental protection fly ash load-bearing brick without burning, steaming and cement. Background technique [0002] The load-bearing bricks currently used for building wall materials mainly include clay bricks, autoclaved fly ash bricks, and unfired concrete bricks. [0003] Clay bricks require a large amount of clay, seriously destroying land resources and need to be sintered in a kiln, which greatly wastes energy. The country has clearly stipulated that the use of clay bricks will be banned in more than 170 large and medium-sized cities after November 2003. [0004] Autoclaved fly ash bricks use fly ash, lime, stones and other raw materials. After pressing and forming, put it into an autoclave for high temperature and high pressure curing to make a fly ash brick that meets the national stand...

AI Technical Summary

Problems solved by technology

Widely used in my country's brick industry, its disadvantages are expensive equipment investment, high cost of lime and non-industrial waste, high cost of autoclaving, waste of coal energy, and high cost of finished products

[0005] Unfired concrete bricks are made of fly ash, cement, stones and other raw materials, and cement is used as a coagulant to make concrete bricks that meet the national standard. The disadvantage is that the cost of cement is high and it is non-industrial waste. The quality of the bricks is unstable. Poor freeze-thaw resistance, heavy weight, high cost of finished products