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Composite slurry used under dynamic water conditions and preparation method thereof

A technology of conditions and grout, which is applied in the field of grouting composite grout and its preparation, can solve the problems that grouting materials are not suitable for use under dynamic water conditions, and achieve the effects of good product stability, ecological environment protection, and cost reduction

Active Publication Date: 2021-04-02
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing grouting materials are not suitable for use under dynamic water conditions, the present invention provides a grouting composite grout used under dynamic water conditions and its preparation method

Method used

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  • Composite slurry used under dynamic water conditions and preparation method thereof
  • Composite slurry used under dynamic water conditions and preparation method thereof
  • Composite slurry used under dynamic water conditions and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The test water-cement ratio is 1.0, and the composite slurry is prepared according to the following proportioning (the order of addition is according to the preparation method described in the present invention):

[0032] 1) PC-1: 100 parts of ordinary Portland cement, 10 parts of coal series metakaolin, 1.0 part of polycarboxylate superplasticizer, 0.05 part of polyether defoamer, 0.15 part of polyacrylamide, 0.1 part of polyvinyl alcohol , 100 parts of water, 3 parts of liquid sodium aluminate accelerator;

[0033] 2) PC-2: 100 parts of ordinary Portland cement, 10 parts of coal-based metakaolin, 1.0 parts of polycarboxylate superplasticizer, 0.05 parts of polyether defoamer, 0.25 parts of polyacrylamide, 100 parts of water, liquid 3 parts of sodium aluminate accelerator;

[0034] 3) PC-3: 100 parts of ordinary Portland cement, 10 parts of coal-based metakaolin, 1.0 parts of polycarboxylate superplasticizer, 0.05 parts of polyether defoamer, 0.25 parts of polyvinyl a...

Embodiment 2

[0042] The test water-cement ratio is 1.0, and the composite slurry is prepared according to the following proportioning (the order of addition is according to the preparation method described in the present invention):

[0043] 1) PC-1: 100 parts of ordinary Portland cement, 10 parts of coal series metakaolin, 1.0 part of polycarboxylate superplasticizer, 0.05 part of polyether defoamer, 0.15 part of polyacrylamide, 0.1 part of polyvinyl alcohol , 100 parts of water, 3 parts of liquid sodium aluminate accelerator;

[0044] 2) PC-5: 110 parts of ordinary Portland cement, 1.0 parts of polycarboxylate superplasticizer, 0.05 parts of polyether defoamer, 0.15 parts of polyacrylamide, 0.1 part of polyvinyl alcohol, 110 parts of water, liquid aluminum 3 parts of acid sodium salt accelerator;

[0045]① Slurry cost: 42.4 Ordinary Portland cement 250 yuan / ton ~ 300 yuan / ton, coal series metakaolin 200 yuan / ton ~ 250 yuan / ton, using coal series metakaolin to partially replace o...

Embodiment 3

[0050] The test water-cement ratio is 1.0, and the composite slurry is prepared according to the following proportioning (the order of addition is according to the preparation method described in the present invention):

[0051] 1) PC-1: 100 parts of ordinary Portland cement, 10 parts of coal-based metakaolin, 1.0 part of polycarboxylate superplasticizer, 0.05 part of polyether defoamer, 0.15 part of polyacrylamide, 0.1 part of polyvinyl alcohol , 100 parts of water, 3 parts of liquid sodium aluminate quick-setting agent; the stirring speed of the polymer aqueous solution is 250r / min, stirring for 30 minutes.

[0052] 2) PC-6: 100 parts of ordinary Portland cement, 10 parts of coal series metakaolin, 1.0 part of polycarboxylate superplasticizer, 0.05 part of polyether defoamer, 0.15 part of polyacrylamide, 0.1 part of polyvinyl alcohol , 100 parts of water, 3 parts of liquid sodium aluminate quick-setting agent; the stirring speed of the polymer aqueous solution is 400r / min, s...

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Abstract

The invention relates to the field of grouting engineering, and more specifically relates to grouting composite slurry used under a dynamic water condition and a preparation method thereof. The grouting composite slurry is prepared from the following components in parts by weight: 100 parts of ordinary Portland cement, 5-10 parts of coal-series metakaolin, 1.0-1.5 parts of a water reducer, 0.05-0.1 part of a defoaming agent, 0.1-0.4 part of polyacrylamide, 0.1-0.3 part of polyvinyl alcohol, 60-120 parts of water and 3-5 parts of a liquid accelerator. The grouting composite slurry used under the dynamic water condition is based on an action mechanism of polymer modification, component screening is carried out, and the composite slurry which is no-toxic and safe, has good product stability,is not easily dissolved into water, and has a high retention rate and good anti-dispersion property under the dynamic water condition is developed. Therefore, the problems that the retention rate of cement slurry is low, the anti-dispersion property is poor, organic slurry is toxic, a product is unstable, and the like are solved.

Description

technical field [0001] The invention relates to the field of grouting engineering, in particular to a grouting composite grout used under dynamic water conditions and a preparation method thereof. Background technique [0002] With the improvement of my country's transportation network and the development of mines and water conservancy and hydropower projects in the direction of large buried depths, underground engineering construction is facing a more complex hydrogeological environment. Water inrush disasters occur frequently, and have become a common hydrogeological disaster during project construction and a major safety threat during operation. The grouting method is the most common method in water inrush disaster control. [0003] Generally speaking, grouting material is the key factor of grouting treatment. Among the existing grouting materials, the cement slurry has poor stability and long setting time, and is easily diluted and dispersed by groundwater, which makes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/70
CPCC04B28/04C04B2111/70C04B14/106C04B24/2652C04B24/2623C04B24/32C04B22/0093C04B2103/302
Inventor 韩鹏举牛世伟何斌马富丽白晓红贺武斌秦鹏举肖泽岸谢瑞珍
Owner TAIYUAN UNIV OF TECH