Fireproof cement-based foaming insulation board prepared from solid waste of coal gangue power plant and preparation method

Abstract

The invention relates to the technical field of building materials, in particular to a fireproof cement-based foaming insulation board prepared from solid waste of a coal gangue power plant and a preparation method. According to the insulation board, a composite cementing material and a composite additive are used as raw material, wherein the composite cementing material comprises ordinary Portland cement, coal gangue power plant fly ash and ultrafine sulphoaluminate cement; and the compound admixtures comprise a pore structure regulator, an activity activator, a retarder, a viscosity regulator, a waterproof agent, an anti-cracking component, a composite water reducing agent, a foaming synergist and a foaming agent. The cement-based foaming insulation board is prepared by taking the ordinary Portland cement, the coal gangue power plant ash and sulphoaluminate cement as the composite cementing material, ultrafine coal gangue power plant furnace bottom slag as the pore structure regulator, and other composite additives as raw materials. Compared with an existing product, the foaming insulation board has the advantages that the volume density is lower, the compressive strength is higher, the heat conductivity coefficient is smaller, the water absorption rate is lower, and the combustion performance can reach the national A-level standard.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a low-cost A-grade fireproof cement-based foam insulation board prepared by using coal gangue power plant solid waste and a preparation method thereof. Background technique [0002] With the development of green buildings in my country, building energy-saving indicators are becoming increasingly stringent. Although the widely used polyphenylene organic insulation boards can meet the thermal insulation requirements of buildings, the fire hazards caused by the flammability of organic materials and the fire hazards caused by many high-rise buildings The huge loss of personal property has made people's demand for energy-saving thermal insulation and fire-proof and flame-retardant buildings continue to increase. Taking advantage of the natural non-combustible advantages of cement-based materials to prepare foam insulation boards to achieve building energy conservation has att...

AI Technical Summary

Problems solved by technology

However, coal gangue is different from the high-quality coal used in conventional coal-fired power plants. It has a high content of non-coal components. After burning, it will still produce a large amount of new solid waste such as power plant ash and furnace bottom slag. Existing technologies are difficult to use on a large scale