Autoclaved fly ash brick

Abstract

The invention discloses an autoclaved fly ash brick, which relates to the technical field of construction materials. The autoclaved fly ash brick is characterized by being prepared from the following components in percentage by weight: 50-60 percent of fly ash, 10-15 percent of carbide slag, 20-25 percent of medium and fine sand, 7-14 percent of quicklime, 1-2 percent of gypsum and 5-8 percent of cement. The autoclaved fly ash brick has the beneficial effects that: the adding amount of the fly ash is high, and the cost of the autoclaved fly ash brick is lowered. As proved by detection, each technical index of the autoclaved fly ash brick manufactured by adopting the scheme reaches the national standard.

Description

technical field [0001] The invention relates to a building material, in particular to an autoclaved fly ash brick with fly ash as the main raw material. Background technique [0002] Autoclaved fly ash brick is a new wall material, which is widely used in the interior and exterior walls of various civil buildings, public buildings and industrial plants, as well as the foundation of houses. It is a product that replaces fired clay bricks. Autoclaved bricks are made of lime and quartz sand, sand or fine sandstone in an appropriate proportion, which are ground, mixed with water, pressed into shape by semi-dry method, and cured by autoclaving. At present, autoclaved fly ash bricks are generally made of fly ash and coal gangue discharged from power plants as the main raw materials, together with cement, lime, and yellow sand. After mixing, digestion, and molding, they are made by high temperature and high pressure curing. The active components in the brick fully undergo hydroth...

AI Technical Summary

Problems solved by technology

The disadvantages of the above-mentioned autoclaved fly ash hollow bricks are: the admixture of fly ash is low, and the price of lime and cement is high, resulting in high brick cost.