Production method of foamed concrete dry powder composite mortar

Abstract

The invention discloses a production method of foamed concrete dry powder composite mortar. The foamed concrete dry powder composite mortar is prepared from fine tailing sand, sulfoaluminate cement, quicklime, fly ash, glass beads, a foaming agent and lightweight aggregate as raw materials. The production method is characterized in that quicklime and fly ash are used as binders and initiators; a surfactant is used as the foaming agent; and fine tailing sand, glass beads and sulfoaluminate cement are uniformly suspended in a material and the mixture is cured into the foamed concrete dry powder composite mortar in a short time. The foamed concrete dry powder composite mortar has low density, good thermal insulation performances and high affinity, is convenient for slurry coating and construction, is not delaminated, does not crack, has high strength, can be prepared by one step, and satisfies wall later decoration requirements.

Description

technical field [0001] The invention relates to a building energy-saving thermal insulation material, in particular to a production method of foamed concrete dry powder composite mortar. Background technique [0002] The source of building energy saving starts from the wall, therefore, there are air-entrained concrete foam blocks (air-entrained blocks) on the market. The main raw materials of this block are cement, sand, quicklime, gypsum, and aluminum powder. After mixing and grinding into a slurry, the mold is installed, and the foam is initially cured. First, it is cut into bricks of required specifications, and then pressurized by an autoclave. solidified. Its main technology is to use quicklime to exothermically foam, form gypsum, cut first, and heat-cure with gas. Its main disadvantage is that in the process of pressurization and curing, each air bubble in the brick will be strung together into a whole body cellular brick, which is easy to breathe and has poor therma...

AI Technical Summary

Problems solved by technology

Its main disadvantage is that in the process of pressurization and solidification, each air bubble in the brick will be strung together into a whole body cellular brick, which is easy to breathe and has poor thermal insulation effect.

In recent years, some people have used organic insulation boards such as EPS boards, XPS boards, and PU as interlayer insulation boards for the outer or inner layers of walls. Problems such as cracks, peeling and flammability