A kind of concrete glue reducing agent and preparation method thereof

Abstract

The invention discloses a cement-reducing admixture for concrete and a preparation method thereof and relates to the field of concrete additives. The cement-reducing admixture for concrete is preparedfrom mixed hydramine, a water-retaining agent, mixed alcohols, formic acid, urea and water. The whole cement-reducing admixture for concrete can further disperse the left flocculation structures of cement when being used in concrete, the flocculation structures have higher strength, the contact area of water and the flocculation structures is increased, and the contact area of cement grains and water is increased so that the shortcoming of too quick slump degree of common concrete can be improved, and the early phase strength of the concrete can be effectively improved.

Description

technical field [0001] The invention relates to the field of concrete additives, more specifically, it relates to a concrete glue reducer and a preparation method thereof. Background technique [0002] Concrete glue reducer is a new type of concrete additive that is different from concrete water reducers. Its main feature is that under the same strength level, it can reduce the amount of cement by 5%-10%, which can ensure that the mechanical properties of concrete will not be reduced. The workability and volume stability have been improved to varying degrees. It has the characteristics of low output, low price, high strength, etc., and has a significant cost-effective advantage. [0003] The application document whose application publication number is CN105174774A discloses a concrete glue reducer, and the components in the glue reducer are proportioned as follows by weight: 100-120 parts of melamine, 400-500 parts of formaldehyde, 300-400 parts of water, 80-100 parts of sa...

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Problems solved by technology

[0004] The above-mentioned concrete glue reducer can reduce the cost of concrete and improve the performance of concrete under the premise of maintaining the same strength. However, in actual concrete construction, it is required to reduce the curing time and speed up the formwork turnover on the premise of ensuring the construction quality. Therefore, it is required to improve the early strength of concrete, but if the concrete glue reducer in this application document is used, it is difficult to achieve the purpose of improving early strength, so it is urgent to provide a concrete reducer that can be used to enhance the early strength of concrete. Glue

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