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Grouting material for repairing deep sea concrete defects and preparation method and grouting method thereof

A technique for repairing grouting materials and defects, which is applied in infrastructure engineering, construction, etc., can solve problems such as insufficient strength and durability, difficult operation of deep-sea grouting technology, and easy falling off of repairing materials, so as to achieve improved impact resistance and wear resistance, Avoid long-distance pipeline transportation and save manpower

Active Publication Date: 2022-01-28
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide a grouting material for repairing deep-sea concrete defects and its preparation method and grouting method, improve the strength and durability of the current underwater grouting material, the repairing material is easy to fall off and Technical problems such as complex and difficult operation of deep sea grouting process

Method used

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  • Grouting material for repairing deep sea concrete defects and preparation method and grouting method thereof
  • Grouting material for repairing deep sea concrete defects and preparation method and grouting method thereof

Examples

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Embodiment 1

[0038] A grouting material for repairing deep-sea concrete defects, comprising the following raw materials in parts by weight: 50 parts of anti-erosion cement, 116 parts of sea sand, 15 parts of silica fume, 5 parts of gypsum, 25 parts of steel fiber, 5 parts of polyvinyl alcohol microfiber, 1 part of flocculant, 1 part of expansion agent and 2 parts of water reducing agent.

[0039]A method for preparing a grouting material for repairing deep-sea concrete defects, comprising: after ultrasonically dispersing polyvinyl alcohol microfibers, configuring anti-erosion cement, sea sand, coral sand, silica fume, gypsum, steel fiber, polyethylene The alcohol microfiber is added into a forced mixer and stirred evenly, then water is added to stir, and finally flocculant, expansion agent, and water reducing agent are added to stir evenly, and the grouting material for repairing deep-sea concrete defects is prepared.

[0040] After casting the mold for 24 hours, remove the mold after the ...

Embodiment 2

[0042] A grouting material for deep-sea concrete defect repair, comprising the following raw materials in parts by weight: 50 parts of anti-erosion cement, 96 parts of sea sand, 20 parts of coral sand, 15 parts of silica fume, 5 parts of gypsum, 25 parts of steel fiber, 15 parts of polystyrene Vinyl alcohol microfibers, 1 part flocculant, 1 part bulking agent and 2 parts superplasticizer.

[0043] A method for preparing a grouting material for repairing deep-sea concrete defects, comprising: after ultrasonically dispersing polyvinyl alcohol microfibers, configuring anti-erosion cement, sea sand, coral sand, silica fume, gypsum, steel fiber, polyethylene The alcohol microfiber is added into a forced mixer and stirred evenly, then water is added to stir, and finally flocculant, expansion agent, and water reducing agent are added to stir evenly, and the grouting material for repairing deep-sea concrete defects is prepared.

[0044] After casting the mold for 24 hours, remove the ...

Embodiment 3

[0046] A grouting material for repairing deep-sea concrete defects, comprising the following raw materials in parts by weight: 50 parts of anti-erosion cement, 86 parts of sea sand, 30 parts of coral sand, 15 parts of silica fume, 5 parts of gypsum, 20 parts of steel fiber, 10 parts of polystyrene Vinyl alcohol microfibers, 1 part flocculant, 1 part bulking agent and 2 parts superplasticizer.

[0047] A method for preparing a grouting material for repairing deep-sea concrete defects, comprising: after ultrasonically dispersing polyvinyl alcohol microfibers, configuring anti-erosion cement, sea sand, coral sand, silica fume, gypsum, steel fiber, polyethylene The alcohol microfiber is added into a forced mixer and stirred evenly, then water is added to stir, and finally flocculant, expansion agent, and water reducing agent are added to stir evenly, and the grouting material for repairing deep-sea concrete defects is prepared.

[0048] After casting the mold for 24 hours, remove ...

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Abstract

The invention discloses a grouting material for repairing defects of deep sea concrete and a preparation method of the grouting material. The grouting material comprises the following raw materials in parts by weight: 50 parts of anti-erosion cement, 86-116 parts of sea sand, 0-30 parts of coral sand, 15 parts of silica fume, 5 parts of gypsum, 20-25 parts of steel fibers, 5-15 parts of polyvinyl alcohol microfibers, 1 part of a flocculating agent, 1 part of an expanding agent and 2 parts of a water reducing agent. According to the deep sea concrete defect grouting method, intelligent unmanned grouting is achieved through an underwater robot, complexity and danger of manual operation are avoided, high efficiency and convenience are achieved, grouting equipment of the underwater robot is transformed, tedious operation equipment and operation procedures are simplified, and the grouting material can be applied to various concrete defects. The prepared grouting material has the advantages that the strength, erosion resistance, impact resistance and wear resistance are obviously improved, the durability is improved, the grouting part is not easy to fall off, the service life is long, and the grouting material can be used in ocean engineering construction.

Description

technical field [0001] The invention relates to the field of deep-sea grouting, in particular to a grouting material for repairing deep-sea concrete defects, a preparation method and a grouting method. Background technique [0002] With the development and application of marine resources, there are more and more underwater engineering constructions. Deep-sea concrete buildings will have a lot of defects due to seawater erosion and erosion. The defects of concrete will damage the strength of concrete and affect the durability of concrete. Serious even It will cause great economic losses and produce potential safety hazards, so the repair of underwater concrete is particularly important. [0003] At present, the most widely used repair method is the grouting treatment method. However, compared with the ordinary cement-based grouting method, the operating environment in the deep sea is harsh, not only the dispersion of the grouting material underwater must be considered, but a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B16/06C04B14/48C04B14/28E02D15/06C04B111/24C04B111/70C04B111/74C04B111/20
CPCC04B28/04C04B14/48C04B16/0641C04B14/28E02D15/06C04B2111/70C04B2111/74C04B2111/24C04B2111/20C04B14/068C04B18/146C04B22/143C04B2103/302C04B24/2611C04B2103/0068
Inventor 刘小艳王港澳刘睿丹赵平忠李田雨吕凯杨恒张玉梅左俊卿夏苏鲁
Owner HOHAI UNIV