Preparation method of lightweight foamed composite concrete wallboard

Abstract

The invention relates to the technical field of concrete and preparation thereof and particularly relates to a preparation method of a lightweight foamed composite concrete wallboard. The preparationmethod of the lightweight foamed composite concrete wallboard comprises the following steps: uniformly mixing 30-50 weight parts of fly ash, 15-35 weight parts of cement, 15-30 weight parts of fine sand, 5-12 weight parts of diatomite, 3-15 weight parts of amino modified silicon dioxide, 3-12 weight parts of aluminum polychloride, 15-48 weight parts of lightweight aggregate, 1-5 weight parts of reinforced fibers and modified rubber under mechanical stirring conditions to obtain a mixture; adding a water reducing agent, an assistant and a foaming agent to be uniformly mixed, and performing compression molding, so as to obtain the concrete wallboard. The lightweight foamed composite concrete wallboard prepared by the method disclosed by the invention has the characteristics of light weight,high strength and excellent impact resistance, can meet the concrete performance index requirement in the construction industry and has excellent application prospects.

Description

technical field [0001] The invention relates to the technical field of concrete and its preparation, in particular to a preparation method of a lightweight foamed composite concrete wallboard. Background technique [0002] In recent years, driven by building energy-saving policies, building energy-saving technologies and energy-saving materials have developed rapidly. Concrete is the most widely used building material in the construction industry. With the development of the economy and the advancement of technology, people's requirements for building materials are also constantly increasing. Not only does the concrete require high strength and durability, but the concrete should also meet the requirements of light weight and environmental protection. requirements. At present, the most common concrete used in industrial and civil buildings, although its strength (generally 20-30MPa) can basically meet the requirements of building structures, is relatively heavy. However, a...

AI Technical Summary

Problems solved by technology

At present, ordinary concrete is the most used in industrial and civil buildings. Although its strength (generally 20-30MPa) can basically meet the requirements of building structures, it is relatively bulky.

However, both ordinary concrete and air-entrained concrete are brittle materials at present, and it is easy to produce micro-cracks due to shrinkage, or even completely destroy them.

The strength of lightweight concrete on the market is very low (generally <5MPa), which cannot meet the requirements of building structures, and can only be used as non-load-bearing partition walls or insulation materials

In addition, air-entrained concrete wall panels are very brittle, easily broken during transportation and construction, and cannot be nailed on the wall panels