A nano-composite migratory steel corrosion inhibitor suitable for concrete in marine environment

Abstract

The invention discloses a nano-composite migration type steel bar rust inhibitor suitable for concrete in marine environment. The components of the novel rust inhibitor include aminomethylpropanol, monoethanolamine benzoate, sodium monofluorophosphate, Sodium phosphate, sodium polyacrylate as raw material hyperpermeable corrosion inhibitor component, nano-calcium carbonate, pentahydrate sodium metasilicate as raw material compact component and octyl triethoxysilane, dodecyl sulfonic acid Sodium is the waterproofing component of the raw material. The nano-composite migratory steel bar rust inhibitor has excellent corrosion inhibition and migration properties, can effectively penetrate into the concrete and migrate to the surface of the steel bar for protection, and at the same time form a dense waterproof layer on the concrete surface to effectively block the intrusion of external harmful media. Improve the durability of concrete structures.

Description

technical field [0001] The invention relates to the field of building materials, and relates to a nano-composite migration-type steel bar rust inhibitor suitable for concrete in a marine environment and a preparation method thereof. Background technique [0002] Reinforced concrete is one of the most important construction materials today and has been widely used in various large-scale engineering facilities, such as bridges, houses and ports. In general environments, reinforced concrete structures have a long service life, but in the marine environment, harmful media such as chloride ions in seawater penetrate into the concrete structure, gather around the steel bars and destroy the passivation film of the steel bars, causing the steel bars to corrode. Then the concrete rusts and cracks until the concrete structure is destroyed. Therefore, the key to improving the service life of concrete structures in marine environments is to improve the anti-corrosion performance of ste...

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Problems solved by technology

[0004] Aiming at the problems of poor migration performance and weak post-protection ability of current migratory rust inhibitors, the present invention provides a nanocomposite migratory steel bar rust inhibitor suitable for marine environments and a preparation method thereof. The rust inhibitor can penetrate into concrete Inside, it migrates to the surface of the steel bar to protect the steel bar, and at the same time forms a waterproof isolation layer on the concrete surface to block the intrusion of external harmful media, thereby effectively protecting the reinforced concrete from being corroded in seawater and prolonging its service life

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