High-performance foaming cement and preparation method thereof

Abstract

The invention relates to high-performance foaming cement, which comprises cement slurry and foams, wherein the cement slurry is prepared from the following raw materials in parts by weight: 100 parts of cement, 10-30 parts of gypsum powder, 10-50 parts of active admixtures, 10-40 parts of mineral admixtures, 1-5 parts of re-dispersible gelatine powder, 0.5-1.5 parts of cellulose ether, 0.2-1.0 part of water reducing agent, 0.1-0.5 part of water repellent and 40-90 parts of water; and the foams are prepared from the following components in parts by weight: 1 part of foaming agent, 0.2-0.8 part of foam stabilizer and 30-50 parts of water. A preparation method of the high-performance foaming cement comprises the steps of: (1) preparing the cement slurry; (2) preparing the foams by using a foaming machine; and (3) mixing and uniformly stirring the cement slurry and the foams according to the weight ratio of 1:(0.1-1), and pouring and molding. The high-performance foaming cement disclosed by the invention has high closed porosity and small shrinkage value, and integrates the performances of heat insulation, sound insulation, water repellent, shock resistance, fire protection, durability, low carbon and environmental protection into a whole.

Description

technical field [0001] The invention relates to a high-performance foamed cement, which belongs to building energy-saving materials. Background technique [0002] In recent years, foam plastics have continuously caused serious fires in building insulation construction, causing serious losses, and have attracted the attention of relevant departments. Although inorganic thermal insulation materials still have the disadvantages of higher density and poorer thermal insulation than organic foam materials, from the perspective of fire prevention, it has become the current development trend to replace organic foam materials with inorganic thermal insulation materials. Among the inorganic non-combustible materials, the price of foam glass and foam ceramics is relatively high; although the price of fiber insulation materials such as rock wool and mineral wool is slightly lower, they are harmful to human body during production and use; the water absorption rate of expanded perlite and...

AI Technical Summary

Problems solved by technology

[0003] Ordinary foamed cement is usually only made of cement, admixtures, foaming agent and water. Its quality is greatly affected by factors such as raw materials, mix ratio, production process, production equipment, and environmental conditions, and there are still certain deficiencies: such as The foam stability and size uniformity are poor, the slurry is easy to bleed and segregate, the foam breaking ra