Composite foaming agent for concrete

Abstract

The invention discloses a composite foaming agent for concrete. The foaming agent is prepared by evenly mixing the following materials at room temperature, by weight: 10-15 parts of saponin, 3-5 parts of sodium dodecyl benzene sulfonate, 1-2 parts of lauryl sodium sulfate, 2-3 parts of polyethylene glycol, 3-4 parts of gelatin, 0.5-1 part of modified diatomite, 0.2-0.5 part of polyoxyethylene methyl glucoside ether, 1-2 parts of polyacrylic acid resin and 60-70 parts of water. The invention has advantages of easily available raw materials, low cost and simple preparation process; the produced foaming agent has advantages of good stability, no deterioration and good foaming power, can reduce the usage amount of a foaming agent solution, does not affect indexes such as dry density and compressive strength of the foam concrete, and has good development prospects.

Description

technical field [0001] The invention relates to a composite foaming agent for concrete, which belongs to the field of building materials. Background technique [0002] With the improvement of the country's requirements for building energy-saving materials, foamed concrete has received more and more attention. Foamed concrete is made of cement, lime, fly ash, sand and admixtures and other main raw materials. A "tight cell" lightweight building material containing a large number of closed pores. Foaming agent is a key factor in the production of foamed concrete, and its performance directly determines the quality of foamed concrete. The application of blowing agent in my country is much later than that in foreign countries. From the 1950s, my country began to produce and apply blowing agent. Commonly used foaming agents with high cost performance are alkyl sulfonate series such as sodium dodecylbenzene sulfonate, which have high foaming power in alkaline building materials ...

AI Technical Summary

Problems solved by technology

Commonly used foaming agents with high cost performance are alkyl sulfonate series such as sodium dodecylbenzene sulfonate, which have high foaming power in alkaline building materials but poor foam stability and fast defoaming, which makes industrial difficult to operate