Autoclaved aerated concrete building block and manufacturing method thereof

Abstract

The invention relates to an autoclaved aerated concrete block and the manufacturing method thereof. According to the weight share, the autoclaved aerated concrete block contains the main raw materials as follows: 65 to 70 parts of fly ash, 18 to 22 parts of lime, 6 to 9 parts of cement, 2.5 to 3.5 parts of gypsum, 7 to 805 parts of aluminium powder and 64 to 70 parts of water, wherein, the fly ash is dry powder fly ash. The manufacturing method of the autoclaved aerated concrete block includes the following steps: putting the materials for mixing, teeming, stopping to conserve, cutting and then autoclaving, then the finished product is obtained, wherein, autoclaving is processed in an autoclave, and the autoclaving is divided into the steps of vacuumizing, pressurizing, stabilizing the pressure and releasing the pressure. The autoclaved aerated concrete block adopting the manufacturing method above has high strength and can completely replace the solid clay brick to be used in the places which have high strength requirements for walling material, such as external wall bearing wall, etc.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a concrete block and a manufacturing method thereof. Background technique [0002] Existing building wall materials include clay solid bricks, hollow bricks, and autoclaved aerated concrete blocks with fly ash as the main raw material. At present, residential buildings in most areas of our country are mainly multi-storey structure load-bearing, and clay bricks are the leading product for wall materials, but because clay consumes a lot of energy and destroys a lot of farmland, it is a load-bearing fly ash that saves land resources. Air-entrained concrete is the key development object of load-bearing material system. [0003] Autoclaved aerated concrete block is a light-weight building material. Its main feature is its wide source of raw materials. Compared with clay bricks, it also has the advantages of sound insulation, heat preservation, fir...

AI Technical Summary

Problems solved by technology

The main raw material of the existing autoclaved aerated concrete block is wet ash, and its manufacturing method includes the following steps: feeding and stirring, pouring, static stop for initial curing, cutting, autoclaving to obtain finished products, etc., wherein the autoclaving step uses The process system of constant pressure steam curing, the strength of this kind of autoclaved aerated concrete block is low, and it cannot be used in the occasions where the strength of the wall material is high, such as the load-bearing wall of the outer wall.