Autoclaved aerated concrete block with high shock strength and manufacture method thereof

Abstract

The invention discloses an autoclaved aerated concrete block with high shock strength. Dissociated hydroxyl in cellulose is enclosed by performing acetylation reaction on tea leaf straw fiber, and thus the hydrophobic performance and the heat stability of the material are improved; and then by cooperating with a physical modification method and adding other effective compositions, the durability and the dispersibility of fiber in autoclaved aerated concrete are improved. Added nanometer boron fiber increases the strength, the apparent density and the heat-conduction efficiency of the block, and added building garbage solves the environment pollution problem, replaces a part of cement, reduces production cost, and realizes the theme of saving energy and protecting environment, and changing waste into valuables. The aerated building block is good in shock resistance, possesses the shock resistance up to 9 grade or more, also possesses the advantages of heat resistance, good warm-keeping heat-insulation property, resistance to ageing, seepage prevention, resistance to water, and the like, and is wide in application prospect.

Description

technical field [0001] The invention relates to the technical field of aerated blocks, in particular to an autoclaved aerated concrete block with high seismic 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 matri...

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