Autoclaved fly ash-lime brick

Abstract

The invention discloses an autoclaved fly ash-lime brick. The autoclaved fly ash-lime brick comprises, by weight, 60-70% of fly ash, 17-22% of stone chips, 12-18% of lime and 1-3% of gypsum. The lime comprises 60-80wt% of active calcium oxide and the fly ash comprises 55-65wt% of silica. The autoclaved fly ash-lime brick has the advantage that through optimization of a raw material ratio, the autoclaved fly ash-lime brick has substantially improved strength and excellent performances of resisting pressure, bending and frost.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an autoclaved fly ash brick. Background technique [0002] The production of autoclaved fly ash bricks began in the early 1960s in my country and developed the fastest and most in the 1970s. Autoclaved fly ash bricks use power plant fly ash, quicklime and deglazed gypsum as the main raw materials, and add a certain amount of cinder or other aggregates. A new type of wall material made after curing. Autoclaved fly ash brick is also a new type of building material that saves energy and makes good use of waste. It saves energy in the production process compared with the production of general building materials. In recent years, my country's wall reform has increased, which has further promoted the production of autoclaved bricks and further improved the quality of autoclaved fly ash bricks. However, the autoclaved fly ash brick produced by the existing production metho...

AI Technical Summary

Problems solved by technology

However, the autoclaved fly ash bricks produced by the existing production methods have unreasonable formulas and inappropriate control of the proportion of raw material components, resulting in poor product strength and unsatisfactory performances such as compressive resistance, flexural resistance, and frost resistance.