Preparation method of light composite concrete panel

Abstract

The invention relates to the technical field of concrete and preparation thereof, specifically to a preparation method of a light composite concrete panel. The preparation method of the light composite concrete panel comprises the following steps: uniformly mixing 25-45 parts by weight of slag powder, 15-35 parts by weight of cement, 15-30 parts by weight of fine sand, 5-12 parts by weight of diatomite, 3-15 parts by weight of light calcium carbonate, 3-12 parts by weight of polyaluminum chloride, 15-48 parts of lightweight aggregate, 1-5 parts of reinforced fibers and modified rubber under the condition of mechanical agitation so as to obtain a mixture; then adding a water reducer, an auxiliary agent and a foaming agent and uniformly mixing, and carrying out compression moulding to obtaina concrete panel sample. The light composite concrete panel prepared by the above method has characteristics of light weight, high strength and good weatherability, can meet performance index requirements of concrete panels in the building industry, and has a good application prospect.

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 composite concrete plate. Background technique [0002] In recent years, driven by building energy-saving policies, building energy-saving technologies and energy-saving materials have developed rapidly. Concrete slabs are the most widely used building materials in the construction industry. With the development of economy and technological progress, people's requirements for building materials are also increasing. quality and environmental requirements. At present, the most common concrete slabs used in industrial and civil buildings, although the strength (generally 20-30MPa) can basically meet the requirements of the building structure, but relatively heavy. However, at present, ordinary concrete panels and aerated concrete panels are brittle materials, which are easy to produce micro-cracks due to shrinkage, or even...

AI Technical Summary

Problems solved by technology

At present, the most common concrete slabs are used in industrial and civil buildings. Although the strength (generally 20-30MPa) can basically meet the requirements of the building structure, it is relatively heavy.

However, at present, both ordinary concrete panels and aerated concrete panels are brittle materials, which are easy to produce micro-cracks due to shrinkage, or even completely destroyed.

The strength of lightweight concrete slabs 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

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