Foamed concrete and preparation method thereof

Abstract

The invention discloses foamed concrete and a preparation method thereof. The foamed concrete contains aerogel powder, foamed concrete and fibers, wherein the aerogel powder contains an internal hydrophobic layer and a surface hydrophilic layer, and the thickness of the surface hydrophilic layer is 0.1-100 microns; and a fiber felt is one or more of a glass fiber felt, a basalt fiber felt, an aluminum oxide fiber felt, a carbon fiber felt and a polyvinyl chloride fiber felt. According to the preparation method, the fibers are compounded with the foamed concrete, the fibers are uniformly distributed in the foamed concrete, and the foamed concrete still remains a nano-porous structure; and compared with existing foamed concrete in the market, the foamed concrete has relatively excellent mechanical property and heat insulation property, the fracture resistance and pressure resistance of the foamed concrete can be remarkably improved, the foamed concrete can be endowed with certain flexibility, and the drying shrinkage value of the foamed concrete can be decreased.

Description

technical field [0001] The invention relates to the technical field of building concrete, in particular to foamed concrete and a preparation method thereof. Background technique [0002] Commonly used wall insulation materials include expanded polystyrene, expanded polyurethane, rock wool, insulating mortar, expanded glass, and traditional expanded concrete. Expanded polystyrene and expanded polyurethane have excellent heat insulation performance, but they are flammable in case of fire and produce suffocating smoke, which seriously threatens the safety of the owner; rock wool has excellent heat insulation performance, but it fails in water, and the construction is difficult; insulation mortar Good fire resistance, but relatively high thermal conductivity; foamed glass is prone to slag, and the cost is high, which affects its engineering application. [0003] Compared with existing thermal insulation materials, foamed concrete belongs to Class A thermal insulation materials,...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a foamed concrete and its preparation method, which solves the problem that the thermal insulation performance of foamed concrete is not as good as that of organic foam thermal insulation materials