Foam concrete heat-preserving material

Abstract

The invention discloses a foam concrete heat-preserving material, and relates to the technical field of building heat-insulating materials. The foam concrete heat-preserving material is composed of the following components by mass: 31 to 46% of cement, 7 to 20% of mineral slag powder, 14 to 21% of volcanic ash, 10 to 18% of talcum powder, 9 to 14% of sepiolite, 2 to 3.5% of a foam stabilizer, 1 to3% of a foaming agent, 0.9 to 1.4% of methylcellulose, 0.3 to 0.8% of a white emulsion, 0.2 to 0.6% of a water reducing agent and 0.1 to 0.4% of a water repellent. The foam concrete heat-preserving material provided by the invention has the following characteristics: through reasonable combination of all components, the foam concrete heat-preserving material has good mechanical properties, heat-preserving and heat-insulating performances and waterproof performance, and especially has moderate density, good heat-insulation performance and low heat-conducting coefficient.

Description

technical field [0001] The invention belongs to the technical field of building thermal insulation materials, and in particular relates to a foam concrete thermal insulation material. Background technique [0002] Foam concrete was first widely used in the United States, Britain, the Netherlands and other European and American countries, and my country has paid more and more attention to building energy conservation. In recent years, both at home and abroad have attached great importance to the research and development of foam concrete. Good thermal insulation performance, good sound insulation and fire resistance, foam concrete also has the advantages of good pumpability, strong waterproof ability, adjustable indoor humidity, and a large amount of industrial waste can be used, etc., and it has been widely used rapidly. [0003] Foamed concrete is mainly composed of calcareous materials and siliceous materials, but the thermal conductivity decreases with the decrease of densi...

AI Technical Summary

Problems solved by technology

But its price is high, and the durability of this kind of cement products is worse than that of ordinary Portland cement products, especially when used for building exterior walls, the service life of the products will be greatly shortened

[0004] High water absorption is also a common problem of foam concrete products at present. Excessive water absorption will lead to a significant decline in the softening coefficient, frost resistance, and service life of foam concrete products, which greatly hinders the application and promotion of foam concrete.