Geopolymer foamed concrete, foamed concrete sandwich composite thermal insulation wallboard and preparation method

Abstract

The invention provides inorganic geopolymer foamed concrete, a composite wallboard prepared by the inorganic geopolymer foamed concrete, and a preparation method thereof. The inorganic geopolymer foamed concrete comprises the following components in parts by weight: 400 to 500 parts of inorganic geopolymer cementing material and 0.5 to 10 parts of foaming agent, wherein the inorganic polymer cementing material comprises 2 to 20 parts by weight of active silica-alumina material, 4 to 30 parts by weight of alkali salt aqueous solution, 1 to 20 parts of inorganic filler, and 0.05 to 3 parts of setting agent. The lightweight and high-strength inorganic geopolymer foamed concrete sandwich composite thermal insulation wallboard can be prepared from the inorganic geopolymer foamed concrete provided by the invention. The preparation method provided by the invention has the advantages of simple process and high production efficiency, and the thermal insulation and decoration integrated construction of exterior walls of buildings can be realized.

Description

technical field [0001] The invention belongs to the field of building materials, and specifically relates to an inorganic geopolymer foam concrete, an ultra-light and high-strength geopolymer foam concrete sandwich composite thermal insulation wallboard prepared by using the inorganic geopolymer foam concrete, and their preparation method . Background technique [0002] Building energy consumption accounts for about 30% of my country's total energy consumption, and it shows an increasing trend year by year. The implementation of building energy conservation is particularly important and necessary for my country, which is short of energy resources. The use of thermal insulation materials is an effective way to achieve building energy conservation. Polyurethane foam boards and extruded polystyrene boards are currently the most widely used thermal insulation materials. They have the advantages of light weight, low thermal conductivity and good thermal insulation performance, bu...

AI Technical Summary

Problems solved by technology

However, cement-based foam concrete has the defects of long setting time, low strength, large shrinkage, easy cracking, and high water absorption, which restricts the large-scale application of foam concrete.

On the other hand, the current energy-saving systems for external thermal insulation of building exterior walls generally have disadvantages such as complex construction technology, low efficiency, easy cracking, and short service life, which seriously affect the energy-saving effect of buildings.