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Corrosion inhibitor for additive reinforced concrete and preparation method for corrosion inhibitor

A reinforced concrete, additive technology, applied in the field of anti-corrosion materials, can solve the problems of toxic nitrite corrosion inhibitor, pollute the environment, low production cost, etc., and achieve the effects of good biodegradability, low cost, and easy procurement.

Inactive Publication Date: 2012-09-19
ZHEJIANG MARINE DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects that nitrite corrosion inhibitors are toxic and pollute the environment, and provide a green and environmentally friendly additive corrosion inhibitor for reinforced concrete. Its components meet the requirements of green environmental protection, and most of the components are non-toxic, And has good biodegradability, low production cost, good anti-corrosion effect

Method used

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  • Corrosion inhibitor for additive reinforced concrete and preparation method for corrosion inhibitor
  • Corrosion inhibitor for additive reinforced concrete and preparation method for corrosion inhibitor

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Experimental program
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Effect test

Embodiment 1

[0023] Firstly, sodium molybdate, calcium gluconate, polyaspartic acid and sodium dodecylsulfonate were crushed to 100 mesh respectively, and then sodium molybdate 8%, calcium gluconate 35%, polyaspartic acid Mix the powder of 47% sodium dodecylsulfonate and 10% sodium dodecylsulfonate evenly to get the additive corrosion inhibitor for reinforced concrete.

Embodiment 2

[0025] Firstly, sodium molybdate, calcium gluconate, polyaspartic acid and sodium dodecylsulfonate were crushed to 200 mesh respectively, and then sodium molybdate 5%, calcium gluconate 40%, polyaspartic acid Mix the powder of 40% sodium dodecyl sulfate and 15% sodium dodecylsulfonate evenly to get the additive type corrosion inhibitor for reinforced concrete.

Embodiment 3

[0027] Firstly, sodium molybdate, calcium gluconate, polyaspartic acid and sodium dodecylsulfonate were crushed to 150 mesh respectively, and then sodium molybdate 10%, calcium gluconate 25%, polyaspartic acid Mix 50% sodium dodecylsulfonate powder and 15% sodium dodecylsulfonate powder evenly to get additive corrosion inhibitor for reinforced concrete.

[0028] When the present invention is in use, it is dissolved in water at a weight ratio of 0.5% to 1.5%, and then used in freshly mixed reinforced concrete.

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Abstract

The invention discloses a corrosion inhibitor for additive reinforced concrete and a preparation method for the corrosion inhibitor. The invention aims to overcome the defects that a nitrite corrosion inhibitor is toxic, and the environment is polluted. The corrosion inhibitor for the additive reinforced concrete is prepared from the following components in weight percentage: 5-10 percent of sodium molybdate, 25-40 percent of calcium gluconate, 40-50 percent of polyaspartic acid and 10-15 percent of sodium dodecyl sulfate. The corrosion inhibitor for the additive reinforced concrete has the characteristics of good corrosion-prevention effect, low cost, convenience in use and environmental friendliness. The durability of a reinforced concrete structure can be effectively improved, and the long service life of the reinforced concrete structure is ensured.

Description

technical field [0001] The invention relates to an anti-corrosion material, in particular to an additive-type corrosion inhibitor for reinforced concrete and a preparation method thereof. Background technique [0002] Reinforced concrete structure combines the advantages of steel bars and concrete, and has a low cost. It is the preferred form of engineering structure design. Since the beginning of the last century, concrete structures have been increasingly widely used. As time goes by, people have gradually realized that the deterioration of concrete structures under many environmental conditions is difficult to meet the design requirements. The second concrete durability conference held in France in 1991, Professor Mehta pointed out that the main causes of concrete damage are corrosion of steel bars, freezing damage in cold climates, and physical and chemical effects in erosive environments, among which corrosion damage to steel bars has been identified as the first factor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C04B103/61
Inventor 孙保库陆阿定孙兆栋张海春范会生郁小芬
Owner ZHEJIANG MARINE DEV RES INST
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