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A crack-resistant high-impact and wear-resistant repair material

A repair material and high impact resistance technology, which is applied in the field of cement-based repair materials, can solve the problems of high technical requirements for operation, easy cracking of the repair layer, and high product price, so as to improve crack resistance, eliminate harmful bubble defects, and improve compactness and the effect of intensity

Active Publication Date: 2021-09-17
安徽瑞和新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0025] A crack-resistant high-impact and wear-resistant repair material, comprising the following raw materials by mass: 340 parts of P·Ⅱ 52.5 cement, 8.0 parts of silicon powder, 53.2 parts of finely ground slag, 1.2 parts of carbon nanotubes, and 576 parts of iron ore 8.0 parts of pure acrylic redispersible rubber powder, 0.6 parts of water-absorbing resin, 0.8 parts of plastic expansion agent, 7.0 parts of UEA expansion agent, 3.2 parts of magnesium oxide expansion agent, 1.8 parts of polycarboxylate water reducer, polyether type dispersant Foam agent 0.2 part.

Embodiment 2

[0027] A crack-resistant high-impact and wear-resistant repair material, comprising the following raw materials by mass: 355 parts of P·O4 2.5 cement, 8.0 parts of silicon powder, 54.2 parts of finely ground slag, 2.0 parts of carbon nanotubes, and 556 parts of iron ore 10.0 parts of pure acrylic redispersible rubber powder, 0.5 parts of water-absorbent resin, 0.9 parts of plastic expansion agent, 8.2 parts of UEA expansion agent, 3.0 parts of magnesium oxide expansion agent, 1.9 parts of polycarboxylate water reducer, polyether type Foam agent 0.3 parts.

Embodiment 3

[0029] A crack-resistant high-impact and wear-resistant repair material, comprising the following raw materials by mass: 315 parts of P·Ⅱ 52.5 cement, 7.2 parts of silicon powder, 60.8 parts of finely ground slag, 1.4 parts of carbon nanotubes, and 591 parts of iron ore 9.0 parts of styrene-acrylic redispersible rubber powder, 0.8 parts of water-absorbing resin, 0.8 parts of plastic expansion agent, 9.0 parts of UEA expansion agent, 3.2 parts of magnesium oxide expansion agent, 1.6 parts of polycarboxylate water reducer, silicone defoaming agent 0.2 parts of the agent.

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Abstract

The invention proposes a crack-resistant high-impact and wear-resistant repair material, which mainly consists of 28.0-38.0% of Portland cement, 5.0-7.5% of ultra-fine powder, 52.0-61.0% of iron ore, and 0.5% of polymer rubber powder. ~1.5%, water-absorbent resin 0.04-0.1%, volume stabilizer 0.8-1.6%, polycarboxylate water reducer 0.1-0.3%, defoamer 0.01-0.03% and other raw materials mixed. The repair material has the advantages of low price, convenient construction, high abrasion resistance, high bonding strength, low shrinkage, high crack resistance, linear expansion coefficient close to that of concrete, and will not fall off from the base material. It can replace epoxy resin Organic materials such as mortar.

Description

technical field [0001] The invention relates to a cement-based repair material, in particular to a crack-resistant high-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 ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/34C04B111/20C04B111/72
CPCC04B28/04C04B2111/00008C04B2111/2038C04B2111/343C04B2111/72C04B2201/50C04B18/146C04B18/141C04B14/026C04B14/36C04B24/2641C04B2103/0068C04B22/066C04B24/24C04B24/32C04B24/2676
Inventor 陈国新王冬徐志峰祝烨然唐修生温金保
Owner 安徽瑞和新材料有限公司
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