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Concrete water reducer and preparation method thereof

A concrete water-reducing agent and technology of water-reducing agent are applied in the field of concrete water-reducing agent to achieve the effects of promoting hydration, improving mechanical properties and good dispersibility

Inactive Publication Date: 2022-03-25
潘伟亮
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Problems solved by technology

However, in the actual application process, the water reducing agent does not all meet the production needs.

Method used

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  • Concrete water reducer and preparation method thereof
  • Concrete water reducer and preparation method thereof
  • Concrete water reducer and preparation method thereof

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with specific examples. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the technical field.

[0040] The raw materials used in embodiment and comparative example are as follows:

[0041] The benchmark cement, P.I type Portland cement, meets the requirements of Appendix A of the standard GB 8076-2008, Qufu Zhonglian Cement Co., Ltd.;

[0042] Fine aggregate, ISO standard sand, Xiamen Aisio Standard Sand Co., Ltd.;

[0043] Coarse aggregate, limestone crushed stone, 5-20mm continuous gradation;

[0044] Isopentenyl polyoxyethylene ether, the number average molecular weight is 2400, Liaoning Kelong Fine Chemical Co., Ltd.;

[0045] Hydrogen peroxide, mass concentration 30%;

[0046] Sodium hydroxide solution, mass concentration 30%.

[0047] Modified graphene preparation method is:

[0048] Add N,N-dim...

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Abstract

According to the concrete water reducing agent provided by the invention, the N-hydroxyphthalimide is adopted to modify the graphene oxide, and then the graphene-terminated polyoxyethylene ether is synthesized, so that the dispersion of the graphene in the concrete is promoted. The prepared concrete water reducing agent can improve the fluidity of cement paste, improve the rheological property of a cement-based material and improve the mechanical property after curing. The invention also provides a preparation method of the water reducing agent.

Description

technical field [0001] The invention relates to a concrete water reducer and a preparation method of the water reducer. Background technique [0002] The workability of freshly mixed concrete determines whether the concrete can be successfully constructed and is also crucial to the later performance. At present, the types and construction methods of concrete include pumping, cast-in-place, self-compacting, underwater, spraying, and rolling, etc., which have different rheological requirements. Adjusting the rheology of concrete through the water-cement ratio is limited by the requirements of strength and cost. With the development of admixture technology, superplasticizers can theoretically design concrete that meets various rheological requirements. But in the actual application process, the water reducing agent can not all meet the production demand. Especially when people have higher and higher requirements for concrete processing and finished products, the requirements...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F220/06C08G83/00C04B24/26C04B103/30
CPCC08F283/00C08G83/001C04B24/2605C04B2103/302C08F220/06
Inventor 潘伟亮龙先成
Owner 潘伟亮
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