Physically foamed porcelain powder aerated concrete and production process thereof

Abstract

The invention discloses physically foamed porcelain powder aerated concrete and a production process thereof, wherein the physically foamed porcelain powder aerated concrete comprises the following raw materials: water, cement, porcelain powder, a foaming agent and an external additive. According to the present invention, cement is used as the main cementing material while the insufficient calcium-based materials such as lime and gypsum are eliminated, wherein lime and gypsum can produce a large amount of dust during the production, such that the processing process of the concrete of the present invention reduces the environmental pollution and saves the cost; by adding the external additive, the addition of the external additive provides the catalytic action, and can accelerate the coagulation effect of the cement and the remaining aggregate so as to enhance the strength of the product, shorten the curing time and save the cost; and the curing mode adopted by the process is steam curing, and has advantages of natural gas saving and cost reducing compared with the conventional autoclave curing.

Description

technical field [0001] The invention relates to the technical field of aerated concrete, in particular to a physically foamed porcelain powder aerated concrete and a production process thereof. Background technique [0002] Air-entrained concrete is made of siliceous materials (sand, fly ash and silicon-containing tailings, etc.) , pre-curing, cutting, autoclaving, curing and other processes made of lightweight porous silicate products. Air-entrained concrete has the advantages of light bulk density, high thermal insulation performance, good sound-absorbing effect, certain strength and machinability, etc. It is one of the earliest and most widely used lightweight wall materials in China. [0003] The traditional air-entrained concrete production process often adopts the production process of "chemical foaming" air-entrained concrete, and the raw materials used include aluminum powder, water, cement, gypsum, lime, fly coal or sand ash; the traditional air-entrained concrete ...

AI Technical Summary

Problems solved by technology

[0003] The traditional air-entrained concrete production process often adopts the production process of "chemical foaming" air-entrained concrete, and the raw materials used include aluminum powder, water, cement, gypsum, lime, fly coal or sand ash; the traditional air-entrained concrete Although the air-entrained concrete produced by the production process can meet the requirements of buildings, it has the advantages of sound absorption, heat insulation, fire prevention, light weight, etc., and has been widely used in today's frame building structures, but it uses aluminum powder in the production process. Foaming itself has potential safety hazards. In recent years, mineral resources have become more and more scarce, and environmental protection policies have become more and more stringent. The raw material "lime" that has the greatest impact on product quality in this industry has become increasingly scarce. The burning and grinding sites are seriously polluted by dust, and they are facing shutdown. The quality of lime is getting worse and higher due to various reasons. In addition, environmental protection has stopped coal-fired boilers, and the price of natural gas is high, making many companies overwhelmed. Facing bankruptcy