Clay cement-aggregate mixed grouting material and preparation method thereof

A technology of grouting material and mixed slurry, which is applied in the field of grouting reinforcement for mine water hazard control, can solve the problems of reduced strength, poor durability of gel, and easy pollution, etc., and achieves improved controllability, high plastic strength, and is not easy to Precipitation effect

Inactive Publication Date: 2019-07-05
北京大地高科地质勘查有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increase of the water-cement ratio, the fly ash-clay-cement slurry decreases in viscosity and strength, so it is not suitable for reinforcement grouting that requires a certain strength.
[0007] (2) Clay cement slurry: Clay is easy to obtain and low in price. Clay cement slurry has been widely used in Henan and other regions. However, clay cement slurry has long solidification time, poor controllability, and low strength, so it is not suitable for rapid plugging and injection. pulp
[0008] (3) Pure cement slurry: It has a high utilization rate and is more common in the world. It has the advantages of high gel strength, good gel durability, environmental protection and no pollution, but the price is still high
[0009] (4) Polymer slurry material: low gel strength, poor gel durability, easy to cause pollution; expensive, not a good choice for coal seam floor reinforcement projects with very large grouting volume

Method used

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  • Clay cement-aggregate mixed grouting material and preparation method thereof
  • Clay cement-aggregate mixed grouting material and preparation method thereof
  • Clay cement-aggregate mixed grouting material and preparation method thereof

Examples

Experimental program
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specific Embodiment 1

[0042] A clay cement-aggregate mixed grouting material, by mass, comprising:

[0043]

[0044]

[0045] Further, the cement is 325 ordinary portland cement.

[0046] Further, the clay is kaolin clay.

[0047] Furthermore, the clay has a plasticity index of 22.

[0048] Furthermore, the mineral content in the clay is >40%, and the organic matter content is <2%.

[0049] Furthermore, the particle size distribution of clay is:

[0050] 0.05 ~ 1mm powder grade 35%;

[0051] 0.005~0.05mm powder grade accounts for 50%;

[0052] The particle size of the remaining particles is less than 0.005 mm.

[0053] Further, the Baume degree of the water glass is 30. Water glass can react with cement to make the cement particles in the slurry hydrate faster and act as an accelerator in the formation of the slurry structure.

[0054] Further, the diameter of the cottonseed shell is 5mm. Cottonseed husks are the shells left after the cottonseeds are separated by the sheller. After mi...

specific Embodiment 2

[0072] A clay cement-aggregate mixed grouting material, by mass, comprising:

[0073]

[0074] Further, the cement is 425 ordinary portland cement.

[0075] Further, the clay is kaolin clay.

[0076] Furthermore, the clay has a plasticity index of 10.

[0077] Furthermore, the mineral content in the clay is >40%, and the organic matter content is <2%.

[0078] Furthermore, the particle size distribution of clay is:

[0079] 0.05 ~ 1mm powder grade 10%;

[0080] 0.005~0.05mm powder grade accounts for 60%;

[0081] The particle size of the remaining particles is less than 0.005 mm.

[0082] Further, the Baume degree of the water glass is 20. Water glass can react with cement to make the cement particles in the slurry hydrate faster and act as an accelerator in the formation of the slurry structure.

[0083] Further, the diameter of the cottonseed shell is 3mm. Cottonseed husks are the shells left after the cottonseeds are separated by the sheller. After mixing with th...

specific Embodiment 3

[0092] A clay cement-aggregate mixed grouting material, by mass, comprising:

[0093]

[0094] Further, the cement is 525 ordinary Portland cement.

[0095] Further, the clay is kaolin clay.

[0096] Furthermore, the clay has a plasticity index of 25.

[0097] Furthermore, the mineral content in the clay is >40%, and the organic matter content is <2%.

[0098] Furthermore, the particle size distribution of clay is:

[0099] 0.05 ~ 1mm powder grade accounts for 40%;

[0100] 0.005~0.05mm powder grade accounts for 30%;

[0101] The particle size of the remaining particles is less than 0.005 mm.

[0102] Further, the Baume degree of the water glass is 40. Water glass can react with cement to make the cement particles in the slurry hydrate faster and act as an accelerator in the formation of the slurry structure.

[0103] Further, the diameter of the cottonseed shell is 10mm. Cottonseed husks are the shells left after the cottonseeds are separated by the sheller. After ...

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Abstract

The invention discloses a clay cement and aggregate mixed grouting material.The material is prepared from 38-42 parts of clay, 4-10 parts of cement, 45-50 parts of water, 1-3 parts of cottonseed hulls, 1-3 parts of walnut hulls and 1-2 parts of water glass. The invention further discloses a preparation method of theclay cement-aggregate mixed grouting material.The preparation method comprises thesteps that 1, 38-42 parts of clay is uniformly added in 45-50 parts of water, and stirring is conducted at room temperature to form mixed slurry; 2, 4-10 parts of cement is added in the mixed slurry,and stirring is conducted to form mixed slurry; 3, 1-3 parts of cottonseed hulls and 1-3 parts of walnut hulls are added in the mixed slurry, and stirring is conducted to form mixed slurry; 4, 1-2 parts of water glass is uniformly added in the mixed slurry, stirring is conducted to be uniform, and the clay cement-aggregate mixed grouting material is obtained. According to the clay cement-aggregatemixed grouting material and the preparation method thereof, the cost of coal seam floor reinforcement is lowered, and pollution is not likely to be produced.

Description

technical field [0001] The invention belongs to the technical field of grouting reinforcement for water disaster control in mines, and in particular relates to a clay cement-aggregate mixed grouting material and a preparation method thereof. Background technique [0002] The northwestern region is mainly composed of Jurassic coal-bearing formations, which are overlying the Cretaceous Luohe Formation sandstone water-bearing formations. The thickness of the aquifers is large. After the coal seam is mined, the roof forms a water-conducting fracture zone, and the water-conducting fracture zone is easy to conduct in the weak zone. Sandstone aquifer of the Luohe Formation, whereby roof water enters the goaf. During the mining process of Jurassic coal seams, there is a great threat of roof water. The influx of a large amount of roof water increases the drainage burden in the mine production process, and also destroys groundwater resources. The safe mining of coal mines cannot be gu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26
CPCC04B28/26C04B2111/70C04B2201/50C04B7/02C04B14/10C04B18/248
Inventor 黄辅强王越张彪朱宝存
Owner 北京大地高科地质勘查有限公司
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