Concrete admixture for inhibiting corrosion medium transmission in ocean environment

A concrete admixture and marine environment technology, applied in the field of concrete admixtures, can solve the problem of not fundamentally inhibiting the transmission of erosive media, and achieve the effects of inhibiting the transmission of erosive media, avoiding agglomeration, and reducing electric flux

Active Publication Date: 2016-06-29
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, in order to prevent concrete from being resistant to chlorine salt erosion in marine engineering design, methods are adopted to improve the concrete strength level, increase the thickness of the concr

Method used

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  • Concrete admixture for inhibiting corrosion medium transmission in ocean environment
  • Concrete admixture for inhibiting corrosion medium transmission in ocean environment
  • Concrete admixture for inhibiting corrosion medium transmission in ocean environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Preparation of amino-modified polyether polysiloxane: In a reaction vessel equipped with a stirrer, a reflux condenser, and a thermometer, add 75 g of hydrogen-containing silicone oil, 3 g of allyl glycidyl ether, and 220 g of allyl polysiloxane in sequence. Oxyethylene polyoxypropylene ether, stirred with N2 for 10 minutes, heated up to 90°C, added dropwise a platinum catalyst to react for 4 hours to obtain a polyether / epoxy silicone oil intermediate. Then drop into ethylenediamine at a ratio of 1.05: 1.00 to the epoxy group molar ratio of amine and polyether / epoxy silicone oil intermediate to continue the reaction for 4h. The weight ratio is 8: 2) and the mixed solvent is washed to remove impurities to obtain a viscous liquid.

[0030] 2) Preparation of polypropylmethylsilsesquioxane: In a reaction vessel equipped with a stirrer, a reflux condenser, and a thermometer, add 140ml of methyltriethoxysilane, 60ml of propyltriethoxysilane, 0.0 1mol / L hydrochloric acid 2...

Embodiment 2

[0033] 1) Preparation of amino-modified polyether polysiloxane: In a reaction vessel equipped with a stirrer, a reflux condenser, and a thermometer, add 85g of hydrogen-containing silicone oil, 3.5g of allyl glycidyl ether, and 240g of allyl glycidyl ether in sequence. Polyoxyethylene polyoxypropylene ether, stirred with N2 for 10 minutes, heated up to 90°C, added dropwise a platinum catalyst to react for 4 hours to obtain a polyether / epoxy silicone oil intermediate. Then drop into ethylenediamine at a ratio of 1.05: 1.00 to the epoxy group molar ratio of amine and polyether / epoxy silicone oil intermediate to continue the reaction for 4h. The weight ratio is 9: 1) and the mixed solvent is washed to remove impurities to obtain a viscous liquid.

[0034] 2) Preparation of polypropylmethylsilsesquioxane: In a reaction vessel equipped with a stirrer, a reflux condenser, and a thermometer, add 140ml of methyltriethoxysilane, 65ml of propyltriethoxysilane, 0.0 1mol / L hydrochloric a...

Embodiment 3

[0037] 1) Preparation of amino-modified polyether polysiloxane: In a reaction vessel equipped with a stirrer, a reflux condenser, and a thermometer, add 100 g of hydrogen-containing silicone oil, 4 g of allyl glycidyl ether, and 225 g of allyl polysiloxane in sequence. Oxyethylene polyoxypropylene ether, stirred with N2 for 10 minutes, heated up to 90°C, added dropwise a platinum catalyst to react for 4 hours to obtain a polyether / epoxy silicone oil intermediate. Then drop into ethylenediamine at a ratio of 1.05: 1.00 to the epoxy group molar ratio of amine and polyether / epoxy silicone oil intermediate to continue the reaction for 4h. The mixed solvent with a weight ratio of 9:1 was washed to remove impurities to obtain a viscous liquid.

[0038] 2) Preparation of polypropylmethylsilsesquioxane: In a reaction vessel equipped with a stirrer, a reflux condenser, and a thermometer, add 140ml of methyltriethoxysilane, 60ml of propyltriethoxysilane, 0.0 1mol / L hydrochloric acid 20...

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Abstract

The invention discloses a concrete admixture for inhibiting corrosion medium transmission in ocean environment. The concrete admixture comprises amino modified polyether polysiloxane, polypropyl silsesquioxane, organoalkoxysilane, stearic acid, stearate, nano silicone dioxide, nano titanium dioxide, fatty amine polyoxyethylene ether and fatty amine polyoxyethylene ester. The concrete admixture can lower electric flux of concrete, improve chlorine salt corrosion resistance of concrete and inhibit corrosion medium corrosion in the ocean environment so as to remarkably improve durability of concrete.

Description

technical field [0001] The invention relates to the field of concrete admixtures, in particular to a concrete admixture used for inhibiting the transmission of erosive media in a marine environment. Background technique [0002] Concrete admixture is a chemical substance that is added in the process of mixing concrete, accounting for less than 5% of the cement mass, and can significantly improve the performance of concrete. Adding admixtures to concrete has the characteristics of less investment, quick results, and significant technical and economic benefits. . With the continuous advancement of science and technology, admixtures have been used more and more. Commonly used admixtures in engineering can be divided into four categories: [0003] 1. Admixture to improve the rheological properties of concrete mixture. Including water reducing agent, air entraining agent and pumping agent. [0004] 2. An admixture to adjust the setting time and hardening performance of concret...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B14/06C04B14/30C04B103/61
CPCC04B24/42C04B40/0039C04B2103/61C04B14/062C04B14/305C04B20/008C04B24/085C04B24/32
Inventor 王洪松崔巩王瑞李磊周华新田倩
Owner JIANGSU SOBUTE NEW MATERIALS
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