Synergistic binder-reducing concrete admixture and preparation method thereof

A technology of concrete admixture and adhesive reducer, which is applied in the field of synergistic and adhesive-reducing concrete admixture and its preparation, which can solve the problems of concrete quality fluctuation and quality fluctuation of different materials, so as to improve strength and work performance and avoid quality fluctuation Effect

Pending Publication Date: 2021-07-27
武汉中彭化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem in the prior art that the weight of the adhesive reducer is inaccurate, resulting in quality fluctuations and fluctuations in the quality of concrete of different materials, the first purpose of the present invention is to provide a synergistic and adhesive-reducing concrete admixture

Method used

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  • Synergistic binder-reducing concrete admixture and preparation method thereof
  • Synergistic binder-reducing concrete admixture and preparation method thereof

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preparation example Construction

[0030] The preparation method of a kind of synergistic glue reducing type concrete admixture is as follows:

[0031] S1: Slowly add polycarboxylate water reducer and polycarboxylate slump retaining agent into water and mix well;

[0032] S2: Add glue reducer, retarder and water retaining agent into the solution, fully dissolve and mix well;

[0033] S3: Add defoamer and air-entraining agent into the solution and mix evenly;

[0034] S4: According to the pH of the solution, a pH regulator is added to adjust the pH of the solution to 7-9.

[0035] The solid content of the additive is controlled at 25-40%

[0036] The polycarboxylate water-reducing mother liquor is formed by copolymerization of ethylene glycol vinyl ether polyoxyethylene ether and acrylic acid, with a solid content of 40%. The polycarboxylate water-reducing agent is adsorbed on the surface of cement particles, and through electrostatic repulsion and The role of steric hindrance can greatly reduce the water con...

Embodiment 1

[0046] Weigh 14 parts of polycarboxylate water reducer, 6 parts of polycarboxylate slump retaining agent, add 74 parts of water, and mix well; add 2 parts of retarder, 2 parts of glue reducer, 2 parts of water retaining agent Add 0.05 parts of antifoaming agent and 0.05 parts of antifoaming agent into the mixed solution and mix well; finally add pH regulator to adjust the pH to 7-9.

Embodiment 2

[0048] Weigh 14 parts of polycarboxylate water-reducing agent, 6 parts of polycarboxylate slump-retaining agent, add 72 parts of water, and mix well; Add 0.05 parts of antifoaming agent and 0.05 parts of antifoaming agent into the mixed solution and mix well; finally add pH regulator to adjust the pH to 7-9.

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Abstract

The invention relates to the technical field of binder-reducing concrete admixtures, and discloses a synergistic binder-reducing concrete admixture and a preparation method thereof. The synergistic binder-reducing concrete admixture comprises a polycarboxylic acid water reducer, a polycarboxylic acid slump retaining agent, a binder reducing agent, an air entraining agent, a defoaming agent, a water-retaining agent, a retarder, a pH regulator and water. The invention further provides the preparation method of the synergistic binder-reducing concrete admixture. The synergistic binder-reducing concrete has the double effects of reducing a binder and reducing water, and can play a role in dispersing a binding material in concrete to the greatest extent, so the binding material which only plays a filling role originally is fully hydrated, and the strength and the working performance of the concrete are improved; the problem that an admixture storage tank and a binder reducing agent storage tank need to be prepared at the same time in a mixing plant is solved, the problem that the quality of the mixing plant fluctuates due to inaccurate weighing of the binder reducing agent is solved, the mixing plant can well adapt to changes of various materials, and concrete quality fluctuation caused by the changes is avoided.

Description

technical field [0001] The invention relates to the technical field of gel-reducing concrete admixtures, in particular to a synergistic gel-reducing concrete admixture and a preparation method thereof. Background technique [0002] Due to the acceleration of construction in our country and the over-harvesting of river sand, the country has regulated the mining of river sand, resulting in the existence of various sand and gravel aggregates of different qualities on the market, which has brought great difficulties to the quality control of concrete. At present, some manufacturers propose to use concrete reducer to solve the problems caused by material instability, and have achieved certain results. Adhesive reducers have been widely used in major commercial mixing stations. Adhesive reducers can save cementitious materials, ensure concrete strength, and improve concrete workability. However, the glue reducer on the market must be used together with the water reducer. Some mix...

Claims

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Application Information

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IPC IPC(8): C04B24/42
CPCC04B40/0039C04B24/2647C04B24/267C04B24/122C04B24/16C04B24/20C04B24/34C04B24/42C04B2103/46C04B24/10C04B24/06C04B2103/0094
Inventor 彭韬陈向东刘权
Owner 武汉中彭化学科技有限公司
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