High-strength anti-cracking foam concrete and preparation method thereof

Abstract

The invention relates to high-strength anti-cracking foam concrete and a preparation method thereof. The high-strength anti-cracking foam concrete comprises, by weight, 200-240 parts of cement, 20-45parts of slag powder, 80-120 parts of water, 1-3 parts of a waterproof agent, 1-5 parts of foaming agents, 0.2-0.5 part of a foam stabilizer, 45-70 parts of lightweight aggregate and 0.3-0.8 part of wood fiber. A double foaming method using the physical foaming agent and the chemical foaming agent is utilized, and the wood fiber is also used so that a large quantity of stable closed air holes canbe formed in the foam concrete, convection and radiation effects in the air holes can be weakened, the water absorption rate of the material is reduced, and meanwhile, the heat conductivity coefficient of the high-strength anti-cracking foam concrete is lower. Due to the double foaming method, the properties of the materials such as the cement, the slag powder and the wood fiber can be fully achieved, and the high-strength anti-cracking foam concrete with the strength and crack resistance better than those of conventional foam concrete is obtained.

Description

Technical field [0001] The invention relates to the technical field of materials, in particular to a high-strength anti-cracking foamed concrete and a preparation method thereof. Background technique [0002] With the continuous development of the construction industry, low-carbon energy saving has become a new development direction for modern buildings. Foamed concrete, also known as foamed cement, lightweight concrete, etc., is a new type of building energy-saving material that is waste-friendly, environmentally friendly, energy-saving, low-cost and non-combustible. As a new type of energy-saving and environmentally-friendly building material, foam concrete has begun to be used in the roof insulation of non-load-bearing parts of buildings. Its main advantages are: low density, light weight, heat preservation, sound insulation, earthquake resistance, etc. However, foam concrete still has certain defects, such as low strength, cracking, water absorption, etc. These defects affec...

AI Technical Summary

Problems solved by technology

However, there are still some defects in foam concrete, such as low strength, cracking, water absorption, etc. These defects affect the promotion and application of foam concrete

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