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A micro-crack repair material for concrete and its preparation method and application

A technology for repairing materials and concrete, which is applied in the field of micro-crack repairing materials for concrete and its preparation, and can solve the problems of poor durability, no obvious improvement in performance, and durability to be improved.

Active Publication Date: 2020-12-18
湖南峰航新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first type is a product with silicate as the main component, which can give priority to improving the strength and wear resistance of concrete, but its durability is poor, and it is easy to affect the post-curing effect of efflorescence
The second category is a neutral product with silica sol as the main component, and its performance has no obvious improvement compared with silicate
When the above three types of inorganic concrete ground hardeners are applied to the repair of airstrip concrete, there are problems of poor curing effect and durability.

Method used

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  • A micro-crack repair material for concrete and its preparation method and application
  • A micro-crack repair material for concrete and its preparation method and application
  • A micro-crack repair material for concrete and its preparation method and application

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preparation example Construction

[0031] The present invention also provides a preparation method of the concrete microcrack repair material described in the above technical solution, comprising the following steps:

[0032] (1) Mix part of water, stabilizer, dispersant, complexing agent, defoamer and penetrant to obtain primary mix;

[0033] (2) the initial mixture obtained in step (1) is mixed with the main agent to obtain a premix;

[0034](3) Mix the premix obtained in step (2), the curing agent and the remaining water to obtain a microcrack repairing material for concrete.

[0035] The invention mixes part of water, stabilizer, dispersant, complexing agent, defoamer and penetrating agent to obtain primary mixture. In the present invention, there is no special limitation on the mixing method, and any mixing method known to those skilled in the art can be used, specifically, such as stirring. In the present invention, the stirring rate is preferably 50-200 r / min, more preferably 80-150 r / min, most prefera...

Embodiment 1

[0044] A microcrack repairing material for concrete, comprising the following components in parts by weight: 10 parts of lithium silicate, 20 parts of potassium silicate, 0.1 part of borax, 0.5 part of sodium polyacrylate (relative molecular mass is 6000), water-soluble phosphoric acid 0.2 parts of silicon aluminum, 0.2 parts of triethanolamine, 0.2 parts of Dow Corning 80140, 0.3 parts of polyether modified silicone AKN-10700, 50 parts of water;

[0045] Preparation methods include:

[0046] (1) Stir and mix 20 parts of water, borax, sodium polyacrylate, triethanolamine, Dow Corning 8014 and polyether modified silicone AKN-1070 at 100r / min for 20min, and let stand for 50min to obtain the primary mixture;

[0047] (2) The initial mixture obtained in step (1) is mixed with lithium silicate and potassium silicate successively at 100r / min for 30min, and left to stand for 50min to obtain the premix;

[0048] (3) Stirring and mixing the premix obtained in step (2) with the silicoa...

Embodiment 2

[0051] A microcrack repairing material for concrete, comprising the following components in parts by weight: 20 parts of lithium silicate, 20 parts of sodium silicate, 0.2 part of borax, 1.5 parts of sodium polyacrylate (relative molecular mass is 5000), water-soluble phosphoric acid 0.4 parts of silicon aluminum, 0.4 parts of triethanolamine, 0.3 parts of Dow Corning 80140, 0.5 parts of polyether modified silicone AKN-10700, 60 parts of water;

[0052] Preparation methods include:

[0053] (1) Stir and mix 30 parts of water, borax, sodium polyacrylate, triethanolamine, Dow Corning 8014 and polyether modified silicone AKN-1070 at 50r / min for 40min, and let stand for 50min to obtain the primary mixture;

[0054] (2) The initial mixture obtained in step (1) was mixed with lithium silicate and sodium silicate at 50r / min for 40min in turn, and left to stand for 50min to obtain the premix;

[0055] (3) Stir and mix the premix obtained in step (2) with the aqueous solution of silic...

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Abstract

The invention provides a hair-cracking repairing material for concrete, and belongs to the technical field of sealing curing agents in the field of building materials. The provided hair-cracking repairing material for the concrete is prepared from, by weight, 20-50 parts of main agent, 0.1-0.4 part of stabilizing agent, 0.5-1.5 parts of dispersing agent, 0.2-0.8 part of curing agent, 0.2-0.8 partof complexing agent, 0.2-0.5 part of antifoaming agent, 0.3-1 part of penetrating agent and 50-70 parts of water, wherein the main agent comprises a mixture of one of sodium silicate and potassium silicate and lithium silicate, and the weight ratio of sodium silicate or potassium silicate to lithium silicate is (0.25-4):1. The provided hair-cracking repairing material for the concrete has the advantages that the curing effect is good, the wear of the concrete can be obviously reduced after the material is applied on the surface of the concrete, micro cracks are closed, etching of water is blocked, the durability of the concrete is improved, and the service life of an airfield runway is prolonged.

Description

technical field [0001] The invention relates to the technical field of sealing and curing agents, in particular to a microcrack repairing material for concrete, a preparation method and application thereof. Background technique [0002] Concrete is a heterogeneous substance, and its porous structure is easy to absorb and release water, resulting in damage to the concrete surface by corrosive media and freezing and thawing. The airport runway is a special concrete structure, and its quality is crucial to the safe operation of the aircraft. effect. [0003] With the development of science and technology in our country, aircraft are becoming more and more advanced, and at the same time, the requirements for road surfaces are becoming more and more stringent. There should be no falling solid materials on the road surface, otherwise the inhalation of aircraft power will cause serious damage, or even scrap the result. . Therefore, more stringent requirements are put forward for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26
CPCC04B28/26C04B2111/00663C04B2201/50C04B22/08C04B22/16C04B24/122C04B24/26C04B24/42C04B2103/0068
Inventor 易金华吴永根赵志红张存国李鹏谢磊
Owner 湖南峰航新材料科技有限公司
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