Method for preparing foam concrete

Abstract

The invention discloses foam concrete and a method for preparing the same. The foam concrete comprises, by weight, 80 parts of cement, 20 parts of fly ash, 1.25 parts of coagulants, 0.35 part of waterreducing agents, 0.4 part of fibers, 3.5 parts of admixtures, 0.025 part of foam stabilizers, 10 parts of foaming agent solution and 50 parts of water. SDS (sodium dodecyl sulfate), APFA (animal protein foaming agents) and water with certain proportions are mixed with one another to obtain the foaming agent solution, foam is prefabricated by the aid of air compressors, then the foam and cement slurry are mixed with one another, and the foam concrete can be prepared under the conditions of the stirring water temperature of 22.5-45 DEG C, the secondary stirring time of 10-75 s and the foam mixing amount of 2250-2875 ml. The foam concrete and the method have the advantages that the foaming agents of the novel foam concrete are easy to manufacture and operate and low in manufacturing cost, and accordingly the foam concrete is low in input and energy consumption and reliable in quality and can be applied to energy-saving buildings and prefabricated buildings.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a preparation method of foam concrete. Background technique [0002] Although the construction industry is a pillar industry of the national economy, it will also bring many hazards. For example, it consumes about 3.5 billion tons of mineral resources and soil sources every year. Among them, cement materials consume about 1.3 billion tons of mineral resources every year. The material consumes about 1.7 billion tons of soil sources. In addition, my country produces about 100 million tons of various industrial solid wastes every year, and building energy consumption mainly for heating and air conditioning accounts for about 28% of the country's total energy consumption. Therefore, in order to achieve building energy saving and alleviate my country's energy crisis, research on new, safe, economical and energy-saving building materials has far-reaching and beneficial ef...

AI Technical Summary

Problems solved by technology

The above inventions mainly prepare foamed concrete from chemical reactions and surfactants. The existing problems are mainly as follows: although the thermal conductivity of the foamed concrete prepared by the former is low and the pore size is small, the process operation is more complicated and the cost is higher; Although the advanced foam concrete has a simple process and low cost, the overall performance of the product is poor.

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