WHDF-H type anti-corrosion agent suitable for marine concrete

Abstract

The invention provides a WHDF-H type anti-corrosion agent suitable for marine concrete. The WHDF-H type anti-corrosion agent comprises, by weight, 16-22% of crystallization stimulated components, 12-16% of active stimulated components, 13-17% of tricalcium aluminate suppression components, 10-15% of anti-corrosion components, 2-6% of anti-microorganism components, and 30-40% of water. According to the WHDF-H type anti-corrosion agent, by promoting the extent of hydration of cement, optimizing hydration products, suppressing early fast hydration of tricalcium aluminate, reducing early hydration heat and the like, the amount of gel of a system is increased, the porosity is decreased, interface structures of aggregates and the early hydration heat are improved, the anti-cracking performance, anti-seepage performance and durability of the concrete are remarkably improved, and meanwhile, the corrosion resistance of concrete mixtures is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of marine concrete, and in particular relates to a WHDF-H type corrosion-resistant agent. Background technique [0002] In the environment of ocean, ground water or spraying deicing salt on the surface, concrete structures are often damaged by the erosion and damage of surrounding harmful ions. According to data, erosion damage is the main cause of concrete damage. The methods to improve the corrosion resistance of concrete mainly include: reducing the water-binder ratio, adding mineral admixtures, concrete surface coating protection, adding chemical admixtures, etc. Among them, reducing the water-binder ratio and adding mineral admixtures can effectively increase the compactness of the concrete itself, but such methods are easily affected by factors such as raw materials and construction; while the surface coating is prone to aging or cracking, so the scope of application more limited. The main cause of ...

AI Technical Summary

Problems solved by technology

Some anti-corrosion agents have appeared in the domestic market, but these anti-corrosion agents often do not have specific targeted ingredients in resisting the corrosion of steel bars caused by chloride ion penetration, but only play an inhibitory role.

However, most of the effective components in these anti-corrosion agents are nitrites. Because nitrites have some negative effects, the scope of application is limited.

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