Efficient water reducer of concrete

Abstract

The invention provides an efficient water reducer of concrete, relates to an admixture applied to concrete, particularly relates to an efficient air-entraining water reducer of concrete and also relates to a preparation method of the water reducer. The efficient water reducer of concrete is mainly prepared from modified naphthalene sulfonate, lignosulfonate, sodium sulfate, flyash, triethanolamine, sodium gluconate, sodium dodecyl benzene sulfonate, silicon resin polyether emulsions and sodium nitrite. The invention aims to prepare a simple, easily operable and high-performance water reducer with an air entraining function based on the current situation of various water reducers on the market at present. The water reducer is mainly characterized in that an air entraining agent is added into the water reducer; the air entraining agent is characterized by entraining micro, uniform and stable air into a system; the air is added into the water reducer, so that the probably-used water amount is same when mixing the concrete through the water reducer; meanwhile, the workability of the concrete can be effectively improved; the slump degree is improved; and the strength of the concrete inuse can be effectively enhanced.

Description

technical field [0001] The invention relates to an admixture which can be used in concrete, in particular to an air-entraining high-efficiency water reducer in concrete. The invention also relates to a preparation method of the water reducer. Background technique [0002] The main component of concrete water reducer is surfactant, and the water reducer is added in the mixing and use of concrete mainly because it plasticizes the freshly mixed concrete so that the concrete can use the same amount of water in the process of use. On the basis of this, it can effectively enhance the physical properties of concrete such as fluidity, workability, strength, and durability. In recent years, the amount of water reducing agent used has taken up a lot of space, and on the basis of high usage, there have been stricter requirements on the performance index of water reducing agent. Multi-functional superplasticizers such as high-efficiency superplasticizers, retarding high-efficiency sup...

AI Technical Summary

Problems solved by technology

The introduction of suitable and excellent gas will improve the unreasonable properties of concrete, but the air bubbles introduced by lignin are unstable, so the addition of lignin will have a certain impact on the strength of concrete

[0004] Chinese Patent Public Examination No. CN101224958A discloses the preparation of a polycarboxylate water reducer. In this patent, the polycondensation of polycarboxylic acid is the main step. The main steps of its synthesis are through the steps of sulfonation and polycondensation. The acid water-reducing agent has excellent water-reducing effect and does not affect the physical performance of concrete. However, the preparation process of polycarboxylic acid in the present invention and the process of use are relatively complicated and have certain risks.

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