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Steel-encasing strengthening plugging material in low-temperature environment

A technology for plugging materials and low temperature environment, applied in the field of structural reinforcement of civil engineering, can solve the problems of large flow, affect the construction progress, and difficult to seal the joint, and achieve the effect of reducing flow, reducing curing time and good viscosity.

Inactive Publication Date: 2019-12-06
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the temperature is lower than minus 5 degrees Celsius, the sealing glue takes a long time to solidify and has a high fluidity, making it difficult to seal the joints, which seriously affects the construction progress.
Especially in the winter in the northern part of our country, under the long-term low temperature environment, it is impossible to carry out Baotou reinforcement construction
The materials used in the current engineering and the existing technology are still unable to solve the above problems

Method used

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  • Steel-encasing strengthening plugging material in low-temperature environment
  • Steel-encasing strengthening plugging material in low-temperature environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment includes a first composition and a second composition.

[0040] Wherein, the first composition is sand.

[0041] The second composition includes: 72g of epoxy resin, 12g of toughening agent, 1g of coupling agent, 36g of curing agent, 185g of silicon micropowder, 38g of alumina clinker, 39g of sodium carbonate and 18g of quicklime.

[0042] The material made by mixing the first composition and the second composition according to the mass ratio of 3:1 can seal the gap between Baotou Steel and concrete under low temperature conditions.

Embodiment 2

[0044] This embodiment includes a first composition and a second composition.

[0045] Wherein, the first composition is sand.

[0046] The second composition includes 112g of epoxy resin, 17g of toughening agent, 2g of coupling agent, 52g of curing agent, 204g of silicon micropowder, 42g of alumina clinker, 41g of sodium carbonate and 24g of quicklime.

[0047] The material made by mixing the first composition and the second composition according to the mass ratio of 3:1 can seal the gap between Baotou Steel and concrete under low temperature conditions.

Embodiment 3

[0049] This embodiment includes a first composition and a second composition.

[0050] Wherein, the first composition is sand.

[0051] The second composition includes: 100g of epoxy resin, 15g of toughening agent, 1.5g of coupling agent, 50g of curing agent, 200g of silicon micropowder, 40g of alumina clinker, 40g of sodium carbonate and 20g of quicklime.

[0052] The material made by mixing the first composition and the second composition according to the mass ratio of 3:1 can seal the gap between Baotou Steel and concrete under low temperature conditions.

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Abstract

The invention belongs to the technical field of civil engineering structure reinforcement, and particularly relates to a steel-encasing strengthening plugging material in a low-temperature environment, wherein the material comprises a first composition and a second composition according to a part ratio of 3:1, the first composition is sand, and the second composition comprises, by mass, an epoxy resin, a toughening agent, a coupling agent, a curing agent, silicon micro-powder, alumina clinker, sodium carbonate and quick lime. According to the present invention, the steel-encasing strengtheningplugging material has characteristics of substantially reduced curing time under a low-temperature condition, significantly reduced fluidity and good viscosity, can ensure the plugging quality, and can solve the problem of incapability of steel-encasing strengthening construction in a low-temperature environment, wherein the hardness of the material after curing can meet the construction requirement.

Description

technical field [0001] The invention belongs to the technical field of civil engineering structure reinforcement, and in particular relates to a Baotou reinforcement and sealing material in a low-temperature environment. Background technique [0002] In the reinforcement construction of civil engineering structures, the reinforced concrete beam-column structures that are repaired and reinforced often need outsourcing steel reinforcement. Baotou reinforcement usually seals the gap between steel plate and concrete by high-pressure glue injection. However, when the temperature is lower than minus 5 degrees Celsius, the sealing glue takes a long time to solidify and has a high fluidity, making it difficult to seal the joints, which seriously affects the construction progress. Especially in the winter in the northern part of my country, under the long-term low temperature environment, it is impossible to carry out Baotou steel reinforcement construction. The materials used in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/14
CPCC04B26/14C04B2201/50C04B14/06C04B2103/0068C04B24/42C04B24/287C04B18/146C04B22/06C04B22/10C04B22/064
Inventor 李嘉祥孙健王彪姚骞孙文攀
Owner NORTHEASTERN UNIV
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