High-toughness impact-resistant and wear-resistant repairing material

Abstract

The invention provides a high-toughness impact-resistant and wear-resistant repairing material which is mainly prepared from 26.0 to 36.0 percent of portland cement, 5.0 to 7.5 percent of ultrafine powder, 52.0 to 61.0 percent of iron ore, 1.5 to 4.0 percent of fiber, 0.01 to 0.03 percent of a coupling agent, 0.1 to 0.3 percent of rubber powder, 0.8 to 1.2 percent of a volume stabilizer, 0.1 to 0.2 percent of a polycarboxylate water reducing agent, 0.01 to 0.03 percent of a defoaming agent and the like. The high-toughness impact-resistant and wear-resistant repairing material provided by the invention has the advantages of low price, convenient construction, high impact toughness, high impact strength, high bonding strength, low shrinkage and high crack resistance, has a linear expansion coefficient close to that of concrete, cannot fall off from a base material, and can replace organic materials such as epoxy resin mortar and the like.

Description

technical field [0001] The invention relates to a cement-based repair material, in particular to a high-toughness anti-impact and wear-resistant repair material suitable for repairing parts requiring high durability such as water scoured surfaces. Background technique [0002] The scouring wear and cavitation effect of high-speed sandy water on the flow surface of hydraulic concrete buildings will lead to large-scale erosion of surface concrete, and serious catastrophic accidents, so it has always been paid attention to. my country has started research on the application of anti-abrasion materials since the 1960s. The main idea is to improve the anti-abrasion performance of the concrete on the flow surface by increasing the compressive strength, and at the same time strengthen the protection of the concrete on the flow surface and timely correct the thin Layer abrasion damage is repaired. With the development and progress of material science, the compressive strength of anti...

AI Technical Summary

Problems solved by technology

Spraying polyurea elastomer has excellent comprehensive mechanical properties, but it requires high operating technology, high product price, and high repair cost

In addition, the application practice shows that the general linear expansion coefficient of resin mortar is larger than that of ordinary cement concrete. When it is applied in an environment with large temperature difference changes, the repair layer is easy to crack, and it will fall off from the base concrete and be destroyed.

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