A kind of early-strength polycarboxylate water reducer and its preparation method and application

A technology of polycarboxylic acid and water reducing agent, which is applied in the field of concrete admixture, can solve the problems affecting concrete strength and complex preparation process, and achieve the effects of improving slump and plasticity, high strength, and improving water reducing performance
CN110451839BActive Publication Date: 2021-11-02重庆腾治科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
重庆腾治科技有限公司
Publication Date
2021-11-02

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Abstract

The invention discloses an early-strength polycarboxylate water reducer as well as its preparation method and application. Early-strength polycarboxylate superplasticizer includes the following components: polycarboxylate high-efficiency water-reducer mother liquor, early-strength components, defoamers, accelerators, fluorosilicates; the early-strength components include organic early-strength components The strong component and the inorganic early-strength component, the mass ratio of the organic early-strength component and the inorganic early-strength component is 1: (0.8-1.2); the polycarboxylate high-efficiency water reducer mother liquor includes the following raw materials in parts by weight: 20-45 parts of methoxypolyethylene glycol, 15-20 parts of 1,2,4,5-pyrellitic anhydride, 5-14 parts of sodium methacrylate sulfonate, 15-20 parts of p-toluenesulfonic acid, 35 ‑40 parts of ionized water, 1‑5 parts of polymerization inhibitor, 2.5‑5 parts of initiator, 1‑3 parts of pH regulator. The early-strength polycarboxylate water-reducer of the invention has the advantages of being able to increase the early strength of concrete without affecting the later strength of concrete and improving the frost resistance of concrete.
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Description

technical field

[0001] The invention relates to the technical field of concrete admixtures, more specifically, it relates to an early-strength polycarboxylate water reducer and its preparation method and application. Background technique

[0002] Concrete is the most widely used artificial building material in the world today. Concrete admixture is a substance that is added to improve the performance of concrete before or during the mixing process of concrete. It can effectively improve the performance of concrete and become an indispensable material in concrete.

[0003] Polycarboxylate high-performance water reducer has the advantages of good dispersibility, high water reducing rate, low dosage, strong slump retention, low shrinkage, no "three wastes" in the production process, and environmental protection. widespread attention of the people.

[0004] In the prior art, the normal temperature synthesis method of a polycarboxylic acid type high slump water reducer in the C...

Claims

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