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A kind of super early strength concrete admixture and preparation method thereof

A concrete admixture, ultra-early-strength technology, applied in the field of concrete admixtures, can solve the problems of early-strength effect, etc., and achieve the effect of rapid increase in early-strength strength, stable increase in later-stage strength, and good durability

Active Publication Date: 2022-05-20
安徽海螺材料科技股份有限公司 +1
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AI Technical Summary

Problems solved by technology

Most of the concrete produced by prefabricated buildings is C40 and below concrete, and the early-strength concrete admixtures on the market are difficult to achieve a significant early-strength effect on C40 and below-grade concrete

Method used

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  • A kind of super early strength concrete admixture and preparation method thereof

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Effect test

Embodiment 1

[0031] Take 14 parts of polycarboxylate water reducer, 6 parts of viscosity-reducing polycarboxylate water reducer and 1 part of retarder by weight, add 72 parts of water, and mix well; add 2 parts of modified alcohol amine and 5 parts of sodium thiocyanate 1. Add 0.1 part of air-entraining agent and 0.05 part of defoamer into the mixed solution and mix evenly; according to the pH value of the solution, add an appropriate amount of pH regulator to adjust the pH value of the solution to 7-9.

[0032] Implementation column 2:

[0033] Take 14 parts of polycarboxylate water reducer, 6 parts of viscosity-reducing polycarboxylate water reducer and 1 part of retarder by weight, add 70 parts of water, and mix well; add 4 parts of modified alcoholamine and 5 parts of sodium thiocyanate , 0.1 part of air-entraining agent and 0.05 part of defoamer are added to the mixed solution, and mixed evenly; an appropriate amount of pH regulator is added to adjust the pH value of the solution to 7...

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Abstract

The invention relates to a super-early-strength concrete admixture and a preparation method thereof. A super-early-strength concrete admixture comprises by weight: 5-20 parts of polycarboxylate water reducer; viscosity-reducing polycarboxylate water reducer; 5-10 parts of water agent; 1-5 parts of retarder; 1-5 parts of alcohol amine compounds; 1-5 parts of thiocyanate; 0.1-0.5 parts of air-entraining agent; 0.1-0.5 parts of defoamer; 5-10 parts of regulator; a small amount of pH regulator; 52-74 parts of water; the super-early-strength concrete admixture and its preparation method are specially designed for prefabricated component factories C40 and below grade concrete, which can ensure the concrete The construction performance within a short period of time, adding an early strength agent that does not contain harmful ions such as chloride ions and sulfate radicals, while improving the early strength of concrete, has no adverse effects on the later strength of concrete. Reach a balance point and improve the production efficiency of the component factory.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a super-early-strength concrete admixture and a preparation method thereof. Background technique [0002] Since the release of the "Evaluation Standards for Industrialized Buildings" at the end of 2015 and the decision to promote prefabricated buildings across the country in 2016, Sichuan Province has actively responded to the call of the state. Sichuan Province's "Implementation Opinions on Promoting the High-quality Development of Sichuan's Construction Industry" clearly stated "to comprehensively promote the development of prefabricated buildings". In 2020, 46 million m2 of new prefabricated buildings will be started in Sichuan Province. Except for the cities (states) that clearly require the division, other cities (states) will specify a certain proportion of prefabricated buildings in the annual new buildings, and the assembly rate of single buildings must not be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/16
CPCC04B40/0039C04B24/161C04B24/122C04B24/16C04B2103/304C04B2103/50C04B2103/0094Y02W30/91
Inventor 蒲诗杰李成勇龚磊赵超汪渝入吴永红张冬
Owner 安徽海螺材料科技股份有限公司
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