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Marine environment concrete crack repair material and preparation method thereof

A technology for crack repair and marine environment, applied in the field of building materials, can solve problems such as inability to serve for a long time, accelerated corrosion of concrete structures, and lack of durability

Active Publication Date: 2019-03-15
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the transition group subnano metal oxides and tannins are conducive to the intrusion of chloride ions, using them in marine environments will accelerate the corrosion of concrete structures and cannot serve for a long time
Therefore, there is currently a lack of durable concrete crack repair materials that can serve in the marine environment for a long time

Method used

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  • Marine environment concrete crack repair material and preparation method thereof
  • Marine environment concrete crack repair material and preparation method thereof
  • Marine environment concrete crack repair material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A marine environmental concrete crack repair material, which is made of the following components in parts by weight: 30 parts of Portland cement, 10 parts of desalinated sea sand, 5 parts of discarded sea fish, 10 parts of crab shells, 4 parts of silica fume, 5 parts of rust inhibitor, 2 parts of early strength agent, 10 parts of expansion agent, 0.5 part of polypropylene fiber.

[0038] The discarded sea fish includes fish bones, fish heads and fish meat. The fineness modulus of the desalinated sea sand is 1.5, and the specific surface area of ​​Portland cement is 300m 2 / kg, the specific surface area of ​​silica fume is 20m 2 / kg

[0039] The preparation method of the above-mentioned marine environment concrete crack repair material is as follows:

[0040] 1) Collect sea sand, discarded sea fish and crab shells;

[0041] 2) Centrifuge the sea sand in water, wash it 3 times, and dry it to obtain clean desalinated sea sand;

[0042] 3) Soak the discarded sea fish i...

Embodiment 2

[0048] A marine environment concrete crack repair material, which is made of the following components in parts by weight: 50 parts of Portland cement, 10 parts of desalinated sea sand, 5 parts of discarded sea fish, 30 parts of scorpion shells, 10 parts of silica fume, 5 parts of rust inhibitor, 0.5 part of early strength agent, 5 parts of expansion agent, and 0.1 part of polypropylene fiber.

[0049] The discarded sea fish includes fish bones, fish heads and fish meat. The fineness modulus of the desalinated sea sand is 1.5-2.5, and the specific surface area of ​​Portland cement is 300-350m 2 / kg, the specific surface area of ​​silica fume is 20-28m 2 / kg

[0050] The preparation method of the above-mentioned marine environment concrete crack repair material is as follows:

[0051] 1) Collect sea sand, discarded sea fish and scorpion shells;

[0052] 2) Centrifuge the sea sand in water, wash it 5 times, and dry it to obtain clean desalinated sea sand;

[0053] 3) Soak th...

Embodiment 3

[0059] A marine environment concrete crack repair material, which is made of the following components in parts by weight: 40 parts of Portland cement, 20 parts of desalinated sea sand, 10 parts of discarded sea fish, 20 parts of shells, 7 parts of silica fume, 3 parts of rust agent, 1 part of early strength agent, 8 parts of expansion agent, 0.2 part of polypropylene fiber.

[0060] The discarded sea fish includes fish bones, fish heads and fish meat. The fineness modulus of the desalinated sea sand is 2, and the specific surface area of ​​Portland cement is 320m 2 / kg, the specific surface area of ​​silica fume is 25m 2 / kg

[0061] The preparation method of the above-mentioned marine environment concrete crack repair material is as follows:

[0062] 1) Collect sea sand, discarded sea fish and shells;

[0063] 2) Centrifuge the sea sand in water, wash it 4 times, and dry it to obtain clean desalinated sea sand;

[0064] 3) Soak the discarded sea fish in clear water, thro...

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Abstract

The invention discloses a marine environment concrete crack repair material which is prepared from the following components in parts by weight: 30-50 parts of Portland cement, 10-30 parts of desaltedsea sand, 5-15 parts of abandoned sea fish, 10-30 parts of crustacean exoskeleton, 4-10 parts of silica fume, 2-5 parts of a corrosion inhibitor, 0.5-2 parts of an early strength agent, 5-10 parts ofan expanding agent and 0.1-0.5 part of polypropylene fiber. The above materials are suitable for marine environment concrete crack repair and can ensure the long-term marine environmental concrete service after being filled.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a marine environment concrete crack repair material and a preparation method thereof. Background technique [0002] Marine environment concrete refers to the concrete that serves in the seashore, seawater or environment affected by sea breeze, and is disturbed by sea water or sea wind. Under the action of internal and external factors, concrete in marine environment will inevitably be corroded and cracked. Once cracks appear on the concrete surface, the bearing capacity, impermeability, and corrosion resistance of the concrete structure will be reduced, which will lead to a series of durability problems such as carbonization of concrete materials, steel bar corrosion, and sulfate corrosion, and will also seriously affect buildings. Appearance. [0003] While a variety of coatings are available for crack repair in concrete, there are fewer crack repair materials for c...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/20C04B111/24C04B111/72
CPCC04B28/04C04B2111/2015C04B2111/24C04B2111/29C04B2111/72C04B14/068C04B18/146C04B16/0633C04B14/28C04B18/18C04B2103/61C04B2103/0068C04B2103/12
Inventor 潘崇根朱大勇潘志纲方兴中柴力金伟良张文龙李旭
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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