Foam concrete with desulfurized gypsum as main cementing material and preparation method of foam concrete

Abstract

The invention belongs to the technical field of building materials, in particular relates to foam concrete with desulfurized gypsum as a main cementing material. The foam concrete comprises desulfurized gypsum, slag powder, coal ash, cement, a foaming agent, a foam stabilizer, an alkali-activator, an early strength agent, water glass, a water reducer and polypropylene fibre. The desulfurized gypsum in the foam concrete is uncalcined desulfurized gypsum; by using the foam concrete, the desulfurized gypsum can be recycled, a great number of industrial wastes such as slag powder and coal ash canbe digested, and a favorable environmental benefit is achieved. In addition, the foam concrete provided by the invention has the excellent performances such as light weight, heat insulation, noise isolation and absorption, flame retardance, seismic resistance and energy adsorption, can be used for casting in situ and producing blocks and plates and is suitable for casting a roof heat insulating layer, a floor heating heat insulating layer, a light wall heat insulating building block, a road absorbent lined barrier and the like in situ.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a foam concrete with desulfurized gypsum as the main cementitious material and a preparation method thereof. Background technique [0002] With the development of industrialization and the substantial improvement of social productivity, non-renewable resources such as fossil fuels on the earth have been exhausted day by day, and mankind is facing a serious energy crisis. Today, saving energy and reducing energy consumption has become a social theme. For a long time, building energy consumption occupies a high proportion in the proportion of energy consumption in various countries. Therefore, it is of great significance to develop new wall materials with high-efficiency thermal insulation and realize self-insulation of building walls to reduce building energy consumption and meet energy-saving requirements. In recent years, the more commonly used building ...

AI Technical Summary

Problems solved by technology

In recent years, the more commonly used building wall insulation materials in my country are mainly some organic insulation materials, such as expanded polystyrene board, sprayed polyurethane, extruded polystyrene board and polystyrene particles, etc., but these organic materials have significant shortcomings : 1) The deformation coefficient of the material is large, it is easy to deform during use, and the stability is poor; 2) The material will gradually age after a period of use, the life is short, and the durability is poor; 3) The material is easy to burn and the safety is not high

For desulfurized gypsum whose emissions are increasing year by year, if it is discarded and stored, it will not only occupy a large amount of valuable land resources, but also have adverse effects on the surrounding ecological environment