Antifouling and corrosion-resistant marine cement and preparation method thereof

A marine cement and corrosion-resistant technology, applied in the field of marine engineering building materials, can solve the problems of pollution, difficult to apply paint, difficult to prevent pollution and corrosion, and achieve long service life, prolong service life, improve anti-corrosion, etc. The effect of chloride ion osmosis

Inactive Publication Date: 2020-01-17
广西云燕特种水泥建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing anti-fouling and anti-corrosion projects rely on painting anti-fouling paint on the outer surface of construction projects, but we all know that it is difficult to paint paint in water, and even if it can, it will produce a certain degree of pollution. Therefore, using paint The method of brushing paint has certain limitations in making marine engineering buildings have anti-fouling and anti-corrosion effects, and those marine engineering buildings that need to be directly formed in water are difficult to achieve anti-fouling and anti-corrosion effects

Method used

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  • Antifouling and corrosion-resistant marine cement and preparation method thereof

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Effect test

Embodiment 1

[0024] The anti-fouling and corrosion-resistant marine cement is made of the following parts by weight: 32 parts of marine portland cement clinker, 1 part of modified polycarboxylic acid water reducing agent, 5 parts of seaweed powder, 2 parts of garlic powder, acrylic acid 10 parts of ester, 1 part of silane coupling agent microcapsule, 30 parts of basalt crushed stone, 3 parts of nano-silica, 0.5 part of calcined attapulgite, and 10 parts of clinker sea sand.

[0025] The preparation method of the modified polycarboxylic acid water reducer: a mixed aqueous solution of prenol polyoxyethylene ether, (meth)acrylamide carboxybetaine and allyltrimethylammonium chloride is placed in a reactor At the same time, warm up to 32℃, add hydrogen peroxide; at the same time, slowly add the aqueous solution of acrylic acid for 3 hours and the mixed solution of 2-mercaptopropanol and ferrous sulfate for 3 hours. After the addition is completed, keep it for 1 hour; after the reaction, it is coole...

Embodiment 2

[0033] The anti-fouling and corrosion-resistant marine cement is made of the following parts by weight: 40 parts of marine portland cement clinker, 1.2 parts of modified polycarboxylate water reducing agent, 10 parts of seaweed powder, 4 parts of garlic powder, acrylic acid 12 parts of ester, 3 parts of silane coupling agent microcapsules, 35 parts of basalt crushed stone, 4 parts of nano silica, 0.8 parts of calcined attapulgite, and 12 parts of clinker sea sand.

[0034] The preparation method of the modified polycarboxylic acid water reducing agent: placing a mixed aqueous solution of isopentenol polyoxyethylene ether, (meth)acrylamide carboxybetaine and allyltrimethylammonium chloride in a reactor At the same time, the temperature was raised to 35°C, and hydrogen peroxide was added; at the same time, the aqueous solution of acrylic acid for 2.5 hours and the mixed solution of 2-mercaptopropanol and ferrous sulfate were slowly added for 2.5 hours. After the addition was complet...

Embodiment 3

[0042] The anti-fouling and corrosion resistant marine cement is made of the following parts by weight: 48 parts of marine portland cement clinker, 1.5 parts of modified polycarboxylic acid water reducing agent, 15 parts of seaweed powder, 6 parts of garlic powder, acrylic acid 15 parts of ester, 5 parts of silane coupling agent microcapsules, 40 parts of basalt crushed stone, 5 parts of nano silica, 1 part of calcined attapulgite, and 15 parts of clinker sea sand.

[0043] The preparation method of the modified polycarboxylic acid water reducing agent: placing a mixed aqueous solution of isopentenol polyoxyethylene ether, (meth)acrylamide carboxybetaine and allyltrimethylammonium chloride in a reactor At the same time, warm up to 38℃, add hydrogen peroxide; at the same time, slowly add the aqueous solution of acrylic acid for 2h and the mixed solution of 2-mercaptopropanol and ferrous sulfate for 2h. After the dripping is completed, keep it for 3h; after the reaction, it is coole...

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Abstract

The invention discloses antifouling corrosion-resistant marine cement and a preparation method thereof. The marine cement is prepared from the following raw materials in parts by weight: 32-48 parts of marine silicate cement clinker, 1-1.5 parts of a modified polycarboxylic acid water reducing agent, 5-15 parts of laver powder, 2-6 parts of garlic powder, 10-15 parts of acrylate, 1-5 parts of silane coupling agent microcapsules, 30-40 parts of basalt crushed stone, 3-5 parts of nano silica, 0.5-1 part of calcined attapulgite and 10-15 parts of clinker marine sand. The slurry structure preparedby the marine cement product has good compactness and volume stability, and the formed concrete has excellent impermeability, bacteriostasis, antifouling and crosslinking properties, and has high chloride ion diffusion resistance and sulfate erosion resistance, thus meeting the requirements of marine engineering construction.

Description

Technical field [0001] The invention relates to the technical field of marine engineering building materials, in particular to anti-fouling and corrosion-resistant marine cement and a preparation method thereof. Background technique [0002] In recent years, countries all over the world have attached great importance to the development of marine resources. The construction of marine projects such as ports, seawalls, coastal protection, cross-sea bridges, and offshore gas stations in China has developed rapidly. The marine environment is a complex corrosive environment. In this environment, seawater itself is a strong corrosive medium. At the same time, waves, waves, tides, and currents produce low-frequency reciprocating forces and impacts on building components, plus marine microorganisms, Fouling such as attached organisms and their metabolites directly or indirectly accelerate the corrosion process. Therefore, in order to make marine engineering buildings have a longer servic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B24/32C08F283/06C08F220/06C04B103/30C04B111/20C04B111/24
CPCC04B24/32C04B28/04C04B2103/302C04B2111/2092C04B2111/24C08F283/065C04B18/248C04B24/045C04B24/42C04B14/14C04B14/062C04B14/102C04B14/068C04B2103/67C08F220/06
Inventor 杨毅蒋久芳王志通黄芳
Owner 广西云燕特种水泥建材有限公司
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