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High-strength non-shrinkage cement-based grouting material and its preparation method and application

A grouting material, non-shrinkage technology, applied in the field of special building materials, can solve the problems of easy cracking and delamination, high cost, low strength, etc., and achieve the effect of simple and easy operation and low cost.

Active Publication Date: 2020-08-28
河南力行科创矿山技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the common problems of grouting materials in the above-mentioned prior art that the setting time is too fast, the later strength is not high, the cost is high, the bonding performance of the grouting material is poor, the thickening effect is low, and it is easy to shrink and crack when used. The problem of delamination; a high-strength non-shrinkage cement-based grouting material and its preparation method and application are proposed

Method used

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  • High-strength non-shrinkage cement-based grouting material and its preparation method and application

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preparation example Construction

[0021] The specific embodiment of the present invention provides a high-strength non-shrinkage cement-based grouting material and its preparation method and application. A kind of high-strength non-shrinkage cement-based grouting material of the present invention, in parts by weight, the grouting material comprises the following raw material components: cement, 400-500 parts (such as 410 parts, 415 parts, 420 parts, 430 parts, 440 parts, 450, 460, 470, 480, 490); sand, 480-550 parts (eg 480, 485, 490, 500, 510, 520, 530, 540, 545 ); silica sand powder, 0-15 parts (such as 2 parts, 4 parts, 5 parts, 8 parts, 10 parts, 12 parts, 13 parts, 14 parts); expansion agent, 10-15 parts (such as 11 parts, 12 parts , 13 parts, 14 parts, 14.5 parts); silica fume, 15-50 parts (such as 18 parts, 20 parts, 25 parts, 20 parts, 35 parts, 40 parts, 45 parts, 47 parts, 48 ​​parts); water reduction agent, 2.5-4 parts (such as 2.6 parts, 2.8 parts, 3 parts, 3.2 parts, 3.4 parts, 3.5 parts, 3.6 par...

Embodiment 1

[0030] A high-strength non-shrinkage cement-based grouting material, which consists of the following raw material components in parts by weight: cement, 420 parts; sand, 500 parts; silica sand powder, 15 parts; expansion agent, 10.5 parts; silica fume, 50 parts ; Water reducing agent, 4 parts; Plastic expansion agent, 0.4 part; Defoamer, 0.1 part.

[0031] Weigh and measure all the raw material components of the grouting material according to the proportion, then put all the raw material components after weighing into the mixer for stirring and dry mixing for 20 minutes, after the mixing is completed, enter the finished product warehouse, and pack them into The finished grouting material can be obtained in the warehouse. When the finished grouting material is applied to the project, add water and stir evenly. The amount of water added is 9% of the weight of the finished grouting material used. It is self-flowing and has no bleeding. It can be directly poured into the grouting ...

Embodiment 2

[0033] A high-strength non-shrinkage cement-based grouting material, which consists of the following raw material components in parts by weight: cement, 490 parts; sand, 480 parts; silica sand powder, 0 parts; expansion agent, 12 parts; silica fume, 15 parts ; Water reducing agent, 2.6 parts; Plastic expansion agent, 0.3 part; Defoamer, 0.1 part.

[0034] Weigh and measure all the raw material components of the grouting material according to the proportion, and then put all the raw material components after weighing into the mixer for stirring and dry mixing for 25 minutes. After mixing, enter the finished product warehouse, and pack them into The finished grouting material can be obtained in the library. When the finished grouting material is applied to the project, add water and stir evenly. The amount of water added is 9% of the weight of the finished grouting material used. It is self-flowing and has no bleeding. It can be directly poured into the grouting hole without vib...

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Abstract

The invention provides a high-strength shrinkage-free cement-based grouting material and a preparation method and application thereof. The high-strength shrinkage-free cement-based grouting material is prepared from, by weight, 400-500 parts of cement, 480-550 parts of sand, 0-15 parts of silica sand powder, 10-15 parts of expanding agent, 15-50 parts of silica fume, 2.5-4 parts of water reducingagent, 0.3-0.4 part of plastic expanding agent and 0-0.1 part of defoaming agent. When the grouting material is applied, the grouting material is in a self-flowing state only by adding water and stirring, no bleeding is produced, initial fluidity is greater than or equal to 340 mm, the fluidity is greater than or equal to 325 mm after 30 minutes, a grouting hole is directly filled with the grouting material, and all voids can be filled without vibration. The high-strength shrinkage-free cement-based grouting material has super-good early strength performance, the compressive strength of 1 dayis greater than or equal to 60 MPa, the strength of 3 days is greater than or equal to 85 MPa, the strength of 28 days is greater than or equal to 132 MPa, and normal operation can be achieved in 1 day after construction. The grouting material has a micro-expansion effect, and direct and tight contact between devices and a foundation is ensured. In addition, the grouting material does not corrodesteel bars, is resistant to oil contaminations, can be used for anchorage of foundation bolts, secondary grouting of the devices and the foundation, building reinforcement and repair, prefabricated concrete member sleeve connection and other projects.

Description

technical field [0001] The invention relates to the technical field of special building materials, in particular to a high-strength non-shrinkage cement-based grouting material and its preparation method and application. Background technique [0002] Grouting material is a cement-based engineering material with certain fluidity and micro-expansion. It has the characteristics of high early strength and rapid strength development. It is mainly used for secondary grouting of equipment foundations, anchoring of anchor bolts, concrete reinforcement, and repairs. middle. [0003] With the continuous development of social economy, there are more and more prefabricated buildings, various super-large equipment and super high-rise buildings, the demand for grouting materials is also increasing, and the performance requirements are also getting higher and higher. However, the conventional grouting materials on the market generally have the characteristics of too fast setting time, low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B14/068C04B2103/0068C04B18/146C04B24/24C04B14/06C04B2103/50
Inventor 王雨利熊祖强张耀辉
Owner 河南力行科创矿山技术开发有限公司