Special mortar for dry method construction of self-insulation aerated concrete and preparation method thereof

Abstract

The invention relates to special mortar for dry method construction of self-insulation aerated concrete and a preparation method thereof, and belongs to a construction material technology field, wherein the mortar is characterized in that the mortar is composed of fly ash, phosphorus slag, cement clinker, phosphogypsum, carbide slag, graphite tailing sand, shale pottery sand, alkali lignin, polyethylene-vinyl acetate and hydroxypropyl methyl cellulose, and is prepared by the following steps of: (1) preparing an ecological composite gel material, which is prepared by mixing the following raw materials by weight: 35-45% of fly ash, 25-50% of phosphorus slag, 8-10% of cement clinker, 3-8% of phosphogypsum, and 2-6% of carbide slag; (2) preparing an additive by mixing and stirring the following raw materials by weight: 35-50% of alkali lignin, 15-30% of polyethylene- vinyl acetate, and 20-40% of hydroxypropyl methyl cellulose; and (3) preparing the plastering mortar by stirring according to a mass ratio of the ecological composite gel material, the graphite tailing sand, the shale pottery sand to the additive being 1:0.7:0.3:0.004.

Description

technical field [0001] The invention relates to a preparation method of special masonry mortar for dry construction of self-insulating aerated concrete, which belongs to the technical field of building materials. Background technique [0002] According to statistics, my country's building energy consumption has accounted for about 27% of the total energy consumption of the society, and with the improvement of people's requirements for the comfort of living environment and the vigorous promotion of urbanization, building energy consumption will further increase. According to the experience of developed countries, construction will surpass industry, transportation and other industries and eventually rank first in social energy consumption, reaching 30-40%. Therefore, building energy conservation is imperative. The country has successively promulgated a series of laws and regulations related to building energy conservation: in October 2007, the "Energy Conservation Law of the ...

AI Technical Summary

Problems solved by technology

Compared with traditional wall materials, self-insulating aerated concrete is light in weight, strong in water absorption, and low in strength. It is easy to generate greater stress with ordinary mortar with high strength and elastic modulus, and it is easy to absorb the ordinary mortar. Moisture, resulting in quality problems such as hollowing and cracking of self-insulating aerated concrete walls

In addition, the self-insulating aerated concrete wall built with ordinary mortar has large gray gaps, usually up to 20mm, which become thermal bridges in the wall, thereby reducing the overall thermal insulation performance of the self-insulating wall