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Concrete crack repair material and its preparation method and use method

A technology for repairing cracks and concrete, which is applied in the field of building materials. It can solve the problems of inconsistent temperature deformation between repairing materials and concrete, inapplicability of small cracks, and no crack repairing materials, etc., to achieve excellent water retention performance, increase strength, and reduce water-cement ratio. Effect

Active Publication Date: 2019-03-26
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned crack repairing materials can bond well with the base material and have high strength, but the former is only suitable for repairing micro-cracks. For large cracks, it is very likely that the repairing materials will fall off due to the inconsistent temperature deformation of the concrete.
The latter is only suitable for cracks with a width greater than 5mm, and is not suitable for repairing small cracks. That is to say, so far, there is no crack repairing material with wide application and excellent performance.

Method used

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  • Concrete crack repair material and its preparation method and use method
  • Concrete crack repair material and its preparation method and use method
  • Concrete crack repair material and its preparation method and use method

Examples

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Effect test

Embodiment 1

[0035]According to the technical scheme of the present invention, a kind of adjustable concrete crack repair material prepared by wet grinding process is prepared, and its components are 20 parts of waste glass, 30 parts of mineral powder, 40 parts of Portland cement, 0.2 parts of water reducer, 0.1 parts of molasses, 0.05 parts of triethanolamine, 0.02 parts of Wenlun glue, 0.1 parts of azodicarbonamide, 0.03 parts of defoamer, 8.5 parts of polyacrylate emulsion, 1 part of dispersible latex powder, fine Sand 0 parts.

[0036] The present invention also provides a preparation method of an adjustable concrete crack repair material prepared by a wet grinding process, comprising the following steps:

[0037] (1) Mix waste glass, mineral powder, portland cement, water reducing agent and molasses in proportion, then place them in a wet mill and add 25 parts of water to grind for 15 minutes.

[0038] (2) Mix the slurry in step 1 with azodicarbonamide, Wenlun rubber, defoamer, polya...

Embodiment 2

[0043] According to the technical scheme of the present invention, a kind of adjustable concrete crack repair material prepared by wet grinding process is prepared, and its components are 20 parts of waste glass, 30 parts of mineral powder, 40 parts of Portland cement, 0.25 parts of water reducer, 0.2 parts of molasses, 0.05 parts of triethanolamine, 0.02 parts of Wenlun glue, 0.1 parts of azodicarbonamide, 0.25 parts of defoamer, 8.4 parts of polyacrylate emulsion, 1 part of dispersible latex powder, fine Sand 22 parts.

[0044] The present invention also provides a preparation method of an adjustable concrete crack repair material prepared by a wet grinding process, comprising the following steps:

[0045] (1) Mix waste glass, mineral powder, portland cement, water reducer and molasses in proportion, then place them in a wet mill and add 32 parts of water to grind for 15 minutes.

[0046] (2) Mix the slurry in step 1 with azodicarbonamide, Wenlun rubber, defoamer, polyacryl...

Embodiment 3

[0051] According to the technical scheme of the present invention, a kind of adjustable concrete crack repairing material prepared by wet grinding process is prepared. In parts by weight, its components are 30 parts of waste glass, 20 parts of mineral powder, 35 parts of Portland cement, 0.2 parts of water reducer, 0.3 parts of molasses, 0.1 parts of triethanolamine, 0.2 parts of Wenlun glue, 0.4 parts of azodicarbonamide, 0.05 parts of defoamer, 10 parts of polyacrylate emulsion, 5 parts of dispersible latex powder, fine Sand 40 parts.

[0052] The present invention also provides a preparation method of an adjustable concrete crack repair material prepared by a wet grinding process, comprising the following steps:

[0053] (1) Mix waste glass, mineral powder, portland cement, water reducing agent and molasses in proportion, then place them in a wet mill and add 30 parts of water to grind for 15 minutes.

[0054] (2) Mix the slurry in step 1 with azodicarbonamide, Wenlun rubb...

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Abstract

The invention discloses a concrete crack repair material and a preparation method and an application method thereof, and solves the problems of properties to be improved and limited adaptive range of the existing concrete crack repair materials. The preparation method comprises the steps: mixing waste glass, mineral powder, portland cement, a water reducer and molasses according to proportions by weight, then putting the mixture into a wet mill and adding water for milling to prepare slurry; and adding triethanolamine, warm round glue, azobisformamide, a defoamer, a poly-propionate emulsion, dispersible latex powder and fine sand proportionally to the slurry and uniformly mixing the materials. The preparation method has a simple process, convenient control, low production cost and environmental friendliness, and the prepared concrete crack repair material has high strength, high liquidity, low bleeding rate, high cohesiveness and certain swelling property.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a concrete crack repairing material and its preparation method and application method. Background technique [0002] Concrete is affected by internal and external factors, and cracks are inevitable. Cracks are the main reason for the decline in the bearing capacity, durability and impermeability of concrete structures. Once the building structure has cracks, it will lead to a series of durability problems such as carbonization of concrete materials, corrosion of steel bars, and sulfate corrosion in the later stage, and it will also seriously affect the appearance of the building. [0003] The repair of concrete cracks is mainly treated with repair materials, and the repair materials require high operability and good bonding performance with the concrete substrate. At the same time, they must have high strength to ensure the long-term service of the concrete structure. Moderate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/72
CPCC04B28/04C04B2111/72C04B2201/50C04B14/22C04B18/12C04B24/38C04B24/122C04B24/129C04B24/26C04B14/06C04B24/24C04B2103/302C04B2103/50C04B2103/0057
Inventor 王迎斌贺行洋苏英王庭苇郑正旗叶青代飞孙艺恒兰蒙
Owner HUBEI UNIV OF TECH
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