Preparation process of foaming-free high-strength foam concrete

Abstract

The invention discloses a preparation process of foaming-free high-strength foam concrete and belongs to the technical field of foam concrete preparation. The preparation process includes raw materialselection, proportion setting, primary stirring, secondary stirring and pouring forming. Phase-change self-melt particles comprise water-soluble shells, the water-soluble shells comprise water-soluble polyurethane materials, and the water-soluble polyurethane materials can release carbon dioxide when meeting water to form secondary microbubbles. Compared with a process in the prior art, the preparation process has the advantages that 30-40% of working procedures are reduced while equipment use is reduced greatly, the complex foaming machine foaming process in the prior art is replaced by self-foaming particles, a foaming machine is not needed, the preparation threshold of the foam concrete is lowered greatly, the porosity of the foam concrete is lowered by more than 50%, and the foam concrete has the advantages of traditional foam concrete while the thermal insulation performance of the foam concrete is increased.

Description

technical field [0001] The invention relates to the technical field of foam concrete preparation, in particular to a preparation process of foam-free high-strength foam concrete. Background technique [0002] Foamed concrete is to fully foam the foaming agent mechanically through the foaming system of the foaming machine, and evenly mix the foam with the cement slurry, and then go through the pumping system of the foaming machine for cast-in-place construction or mold molding. A new type of lightweight thermal insulation material containing a large number of closed pores formed by curing. It belongs to the bubble-like thermal insulation material, and its prominent feature is that it forms closed foam pores inside the concrete, which makes the concrete lightweight and heat-insulating; it is also a special variety of aerated concrete, and its pore structure and material properties are close to those of the aerated concrete. For air-entrained concrete, the difference between t...

AI Technical Summary

Problems solved by technology

[0004] However, in many cases where foamed concrete needs to be used, there is no condition for using a foaming machine, which also makes the conditions for using foamed concrete higher, especially for smaller engineering volumes and smaller enterprises, it is impossible to use foamed concrete , the use of conventional concrete will lead to waste of materials, heavy weight, inconvenient transportation, and difficult construction. The effect makes the pores in it mostly open, and the opening rate is high, which seriously affects the thermal insulation performance of foam concrete.

Images