A kind of foaming agent and preparation method thereof

Abstract

The invention discloses a foaming agent and a preparation method thereof. The foaming agent is suitable for preparing ultra-low-density foam concrete from sulfate aluminum cement, and comprises sodium lauryl sulfate, fatty alcohol-polyoxyethylene ether, lauryl alcohol, ethylene glycol butyl ether, sodium gluconate and water. By adopting the technical scheme of the foaming agent, when the ultra-low-density foam concrete is prepared by using the sulfate aluminum cement, the foaming agent has enough stability to keep the molding of the foam concrete and also can ensure that air holes of molded foam concrete are enlarged, the hole wall is thickened and the strength of the foam concrete is increased; foam generated by the foaming agent is uniform and fine, and is good in stability; the generated foam can be easily and uniformly mixed with a cement-based material, and is suitable for preparing bubble mixed light soil of which the density is within 150kg / m<3>; the foaming agent disclosed by the invention is easily-available in raw material, stabile in nature and cheap in price.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a foaming agent and a preparation method thereof. Background technique [0002] At present, the application of foamed concrete (air bubble mixed light soil) is gradually increasing, and the output and variety of foaming agents are also increasing, and the quality is also uneven, and the foaming agents on the market cannot prepare high-strength concrete. , Density at 150kg / m 3 The following ultra-low-density foamed concrete either has poor stability and cannot be molded, or the molded strength is too low to be practically applied. [0003] The use of sulphoaluminate cement to prepare ultra-low-density foamed concrete is a recent research direction. Due to its short setting time, when preparing ultra-low-density foamed concrete, it can be formed without the need for excellent stability of the foam. However, it is precisely because of the quick-setting characteristics o...

AI Technical Summary

Problems solved by technology

However, it is precisely because of the rapid setting characteristics of sulfoaluminate cement that the ultra-low density foamed concrete prepared by using it can be formed by hydration and solidification of cement in a very short time, resulting in very small internal pore size of the formed foamed concrete , the specific surface area is large, and due to the limitation of density, the amount of cement is limited, resulting in extremely thin and brittle pores with no strength.

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