Autoclaved aerated concrete block with good mechanical strength and preparation method of autoclaved aerated concrete block

Abstract

The invention discloses an autoclaved aerated concrete block with good mechanical strength. According to the autoclaved aerated concrete block, by virtue of acetylation on cedar wood fibers, free hydroxyl in cellulose is closed, so that the hydrophobic property and the thermal stability of a material are improved; by adding other effective components through a physical modification method, the durability and the dispersibility of the fibers in autoclaved aerated concrete are improved; by adding the raw materials including coal gangue, palygorskite powder, papermaking white clay, asbestos fiber and the like, the aerated concrete block has excellent mechanical strength, high temperature resistance and water resistance, can be used for a long time at a high temperature environment, can be further used at a wet environment for a long time without mildewing and is long in service life and wide in application range.

Description

technical field [0001] The invention relates to the technical field of aerated blocks, in particular to an autoclaved aerated concrete block with good mechanical strength and a manufacturing method thereof. Background technique [0002] As one of the important varieties of new wall materials, autoclaved aerated concrete blocks have many advantages such as good thermal insulation effect, good fire performance, sound insulation, light weight, and environmental protection compared with traditional clay fired bricks. However, the volume deformation coefficient of air-entrained concrete blocks is relatively large, the strength is relatively low, and the water absorption rate is high. When building a wall, the wall is prone to cracks, and the plaster layer is prone to large-scale cracks, hollowing and falling off. , showing obvious brittleness, which hinders the further application and promotion of autoclaved aerated concrete blocks to a certain extent. Fiber, as a good cement ma...

AI Technical Summary

Problems solved by technology

However, in the industrial production process of autoclaved air-entrained concrete blocks, steel wires are generally used to cut and shape the initially set air-entrained concrete, and the addition of too many fibers will affect the cutting of the air-entrained concrete, making the fibers The application effect in autoclaved aerated concrete is not particularly significant, which hinders its application range in autoclaved aerated concrete blocks, and also seriously affects the product quality and performance of autoclaved aerated concrete blocks