Novel high-strength foam concrete and preparation method for same

Abstract

The invention discloses novel high-strength foam concrete and a preparation method for the same. The novel high-strength foam concrete is characterized in that the novel high-strength foam concrete is prepared from the following raw materials in parts by weight: 300 to 800 parts of a gel material, 250 to 850 parts of a fine aggregate, 375 to 1,250 parts of a coarse aggregate, 4 to 8 parts of a water reducing agent, 250 to 850 parts of water, 20 to 40 parts of a foaming agent and 10 to 20 parts of a foam stabilizer, wherein the foaming agent is an isocyanate derivative. According to the novel high-strength foam concrete and the preparation method for the same, the following principle is utilized: isocyanate adopted as the foaming agent is reacted with the water to generate unstable carbamic acid at first, the unstable carbamic acid is rapidly decomposed into amine and carbon dioxide, and the discharged carbon dioxide acts for foaming to generate a foam body; a prepared foam concrete material is favorable for making a heat insulation, soundproof and high-strength foam concrete building block on one hand, and on the other hand, the construction engineering cost is reduced, and the high-strength foam concrete can be widely applied to construction engineering.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-strength foamed concrete and a preparation method thereof. Background technique [0002] As an inorganic building insulation material, foam concrete has the characteristics of light weight, good thermal insulation, and excellent fire resistance, and has been widely used in construction projects in my country. The full application of foam concrete in construction can greatly reduce the self-weight of the building, and the reduction rate can be as high as 25%. While the self-weight of the building is reduced, the structure and foundation costs are also reduced. Therefore, the full application of foam concrete in building construction can achieve good economic benefits. Not only that, a large number of studies have shown that buildings that use foam concrete reasonably have higher seismic performance than ordinary buildings; in addition, foam concrete also has goo...

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Problems solved by technology

[0004] However, this kind of insulation material is mostly produced by special cement such as sulphoaluminate at present, which brings two problems: first, the durability of its foam concrete products is poor; second, the cost of special cement is higher than that of ordinary cement

These have hindered the further development of ultra-light foamed concrete as an insulation material

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