Preparation method of high-performance cast-in-situ foam concrete

Abstract

The invention discloses a preparation method of high-performance cast-in-situ foam concrete. The preparation method comprises the following steps: preparing foams from a foaming agent water solution diluted through a foaming agent by virtue of a foaming machine; premixing cement, an admixture, a lightweight aggregate and an additive with water, and carrying out steam heating to form a preliminary mixture; then adding a modifying agent into the mixture; stirring, and mixing, so as to obtain mixture slurry; and finally adding the foams into the mixture slurry, mixing, stirring, pouring a discharged material into a mold or carrying out pumping pouring, and carrying out maintenance formation, so as to obtain the cast-in-situ foam concrete. According to the preparation method, by adding the modifying agent added with wood fiber, graphite powder and a water repellent in a targeted manner, the structural strength and the surface roughness of the foam concrete are improved; by virtue of the wood fiber, the structural tenacity of the foam concrete is improved; and the preparation method is simple and convenient, the mixture is subjected to preliminary high-temperature processing by virtue of a steam preprocessing manner and is subjected to process improvement through the modifying agent.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a preparation method of high-performance cast-in-place foam concrete. Background technique [0002] At present, my country's development has been advocating low-carbon environmental protection, energy conservation and emission reduction, and lightweight and thermal insulation of building materials. Among the organic materials commonly used in the building insulation material market, such as polystyrene foam board, phenolic foam board, etc., their fire performance is extremely poor and they are easy to burn. The best phenolic foam can only reach B1 level, and has poor weather resistance and long service life. Short and expensive to replace. Among inorganic thermal insulation materials: foam glass, foam aluminum, and foam ceramics have high cost prices; although fiber thermal insulation materials such as rock wool are slightly lower in price, they are not hard materials...

AI Technical Summary

Problems solved by technology

Among the organic materials commonly used in the building insulation material market, such as polystyrene foam board, phenolic foam board, etc., their fire performance is extremely poor and they are easy to burn. The best phenolic foam can only reach B1 level, and has poor weather resistance and long service life. short, expensive to replace

Among inorganic thermal insulation materials: foam glass, foam aluminum, and foam ceramics have high cost prices; although fiber thermal insulation materials such as rock wool are slightly lower in price, they are not hard materials, have poor constructability, and are harmful to human health. It is easy to make people itchy all over the body, silicosis, etc.; in addition, granular loose insulation materials such as expanded perlite and vitrified microbeads are loose and difficult to use, and cement powder bonding has high density and unsatisfactory insulation effect, which makes their application restricted. restricted