Nano composite migration type steel bar corrosion inhibitor suitable for concrete in marine environment

Abstract

The invention discloses a nano composite migration type steel bar corrosion inhibitor suitable for concrete in a marine environment. The novel corrosion inhibitor comprises the following components: a high-permeability corrosion inhibition component which takes aminomethyl propanol, monoethanolamine benzoate, sodium monofluorophosphate, sodium hexametaphosphate and sodium polyacrylate as raw materials, a dense component which takes nano calcium carbonate and sodium metasilicate pentahydrate as raw materials; and a waterproof component which takes octyltriethoxysilane and sodium dodecyl sulfate as raw materials. The nano composite migration type steel bar corrosion inhibitor has excellent corrosion inhibition performance and migration performance, can effectively penetrate into concrete and migrate to the surface of the steel bar for protection, forms a compact waterproof layer on the surface of the concrete at the same time, effectively blocks invasion of external harmful media, and improves the durability of the concrete structure.

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...

AI Technical Summary

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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