Multifunctional concrete intensifier

Abstract

A multifunctional concrete intensifier is prepared by a method comprising the following steps: at first, adding polyethers and 70%-75% of deionized water in a reaction vessel according to proportion; when heating to 55-65 DEG C, dropwise adding acrylic acid and an initiator in the reaction vessel and then cooling to 35-45 DEG C, adding caustic soda for neutralizing, stirring for 10-20 min to enable the components to be mixed uniformly to prepare a mixture I; adding triethanolamine, a surfactant and a thickening time control agent in the rest of 25%-30% of deionized water, and sufficiently stirring for 0.2-1 h at 35-45 DEG C to prepare a mixture II; then maintaining the temperature of the mixture I to 35-45 DEG C, stirring and slowly pouring into the mixture II, and sufficiently mixing for 0.5-1.5 h to obtain a light yellow liquid not easy to precipitate. The multifunctional concrete intensifier is chloride-free, is qualified in stability, meanwhile, has multiple functions of saving the comprehensive cost of concrete, improving the concrete workability, and increasing the concrete strength and the like, meets the national harmful substance requirement standard, reduces the cement content, and is simple to use, low in mixing amount, and small in investment.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a multifunctional concrete reinforcing agent. Background technique [0002] In recent years, the scale of China's construction has been very large, and the scale of various key and major infrastructure constructions has continued to expand. Many large-scale modern buildings such as high-rises and long-spans, as well as major projects such as water conservancy, hydropower, and high-speed railways have increasingly required concrete construction technology and comprehensive performance. In many modern concrete projects, traditional concrete admixtures can no longer meet the needs of the project due to the limitations of technical performance. Although ready-mixed concrete has made great progress, high cement consumption, high water consumption, and high The "three high" phenomenon of water-cement ratio has not been substantially changed, so the existing technology needs to be perfected and d...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the scale of China's construction has been very large, and the scale of various key and major infrastructure constructions has continued to expand. Many large-scale modern buildings such as high-rises and long-spans, as well as major projects such as water conservancy, hydropower, and high-speed railways have increasingly required concrete construction technology and comprehensive performance. In many modern concrete projects, traditional concrete admixtures can no longer meet the needs of the project due to the limitations of technical performance. Although ready-mixed concrete has made great progress, high cement consumption, high water consumption, and high The "three high" phenomenon of water-cement ratio has not been substantially changed, so the existing technology needs to be perfected and developed

Images