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Anti-impact and wear-resistant mortar

A technology of wear-resistant sand and Portland cement, which is applied in the field of mortar of hydropower engineering materials technology, can solve the problems of poor crack resistance, easy cracks, and low mortar strength, and achieve low elastic modulus and stable strength growth , the effect of reducing water consumption

Active Publication Date: 2014-07-30
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the existing technology represented by the above-mentioned patent documents still has the technical problems of "the early strength development is too fast, the middle and late strength growth is small, the heat of hydration is released intensively, the drying shrinkage and self-drying shrinkage are large, and cracks are extremely prone to occur". And the mortar strength is small, the elastic modulus is high, and the crack resistance is not good

Method used

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  • Anti-impact and wear-resistant mortar

Examples

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Effect test

Embodiment 1

[0065] Embodiment 1: The components and parts by weight of the anti-impact and wear-resistant mortar in this embodiment are: 47 parts of low-heat Portland cement, 50 parts of sand in basalt, 1.5 parts of redispersible latex powder, powdery polycarboxylate water-reducing 0.2 parts of antifoaming agent, 0.3 parts of polyether defoamer, nano-SiO 2 0.4 parts, nano CaCO 3 0.6 parts.

[0066] Preparation method: Weigh each component according to the above-mentioned parts by weight, mix in a mixer, and form a product after mixing evenly;

[0067] How to use: Add appropriate amount of water to the anti-scour and wear-resistant mortar to make the consistency meet the requirements of use; the conventional construction method of anti-scouring and wear-resistant materials is used for construction, and it is mainly used for repairing hydropower projects.

Embodiment 2

[0068] Embodiment 2: The components and parts by weight of the anti-impact and wear-resistant mortar in this embodiment are: 44 parts of low-heat Portland cement, 44 parts of sand in basalt, 1.0 part of redispersible latex powder, and powdery polycarboxylate water-reducing 0.10 parts of antifoaming agent, 0.20 parts of polyether defoamer, nano-SiO 2 0.7 parts, 5 parts of fly ash, 5 parts of slag.

[0069] The preparation method and usage method are the same as in Example 1.

Embodiment 3

[0070] Embodiment 3: The components and parts by weight of the anti-impact and wear-resistant mortar of this embodiment are: 40 parts of medium-heat Portland cement, 42 parts of quartz medium sand, 1.5 parts of redispersible latex powder, and powdery polycarboxylate 0.15 parts of water agent, 0.25 parts of polyether defoamer, nano-SiO 2 0.5 parts, 5 parts of fly ash, 10 parts of slag, 0.6 parts of sodium sulfate.

[0071] The preparation method and usage method are the same as in Example 1.

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Abstract

The invention discloses an anti-impact and wear-resistant mortar, belonging to the field of a repairing material in water-power engineering. The difficulty that the constructions in the conventional water-power engineering is difficult to repair after being damaged by rushing and abrading with water with sands and stones can be solved. The anti-impact and wear-resistant mortar comprises the following components in parts by weight: 39-48 parts of silicate cement, 45-50 parts of graded hard fine aggregate, 0.05-0.25 parts of water reducing agent, 0.05-0.3 parts of de-foaming agent and 0.05-1.5 parts of nanometer material. The anti-impact and wear-resistant mortar provided by the invention has the advantages of high anti-impact and wear-resistant strength, low elasticity modulus and good anti-crack property, and is a finished product material with a higher application value for repairing through irrigation works.

Description

technical field [0001] The invention relates to the technical field of mortar in hydropower engineering material technology. The mortar is mainly used for repairing water scoured parts, and can also be used as a pouring material for anti-scouring concrete. Background technique [0002] In hydraulic construction projects, the concrete on the overflow dam surface, water delivery tunnel, spillway or apron, etc., is often subjected to high-speed water flow or high-speed water flow carrying sand and stones, and is prone to damage such as wear and cavitation This phenomenon not only directly or indirectly affects the normal and safe operation of the project, but also requires huge maintenance and repair costs. [0003] Many problems have been exposed in the performance of existing anti-abrasion materials during the engineering construction process and in the later stages of the site. For example, the early strength development of the silica fume series anti-abrasion concrete i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/72
Inventor 杨代六曲良焕阳运霞吴勇田先忠黎茜杜青林
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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