Flocculating agent for cement high pressure jet grouting and preparation method and application thereof

A high-pressure jetting and flocculant technology, applied in the field of high-pressure jet grouting for cement and its preparation field, can solve the problems of large loss of engineering materials, loss of cement slurry, and increased construction cost, and achieve direct cost savings, reduction of loss, low cost effect

Active Publication Date: 2012-10-03
SINOHYRDO ENG BUREAU 3 CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] In the anti-seepage construction of hydraulic cofferdam body, the current high-pressure jet grouting process uses pure cement slurry for grouting, and pure cement slurry is easy to separate slurry and water, so it has poor adhesion to gravel soil and easily causes slurry loss
Especially when the void ratio is too large due to the unreasonable gradation of gravel soil in the cofferdam body, and the water permeability caused by the large joint crack opening and geological fault zone is large, the method of high-spray anti-seepage grouting with pure cement slurry The difficulty of completing the anti-seepage wall is further increased, and it is easy to cause a large loss of cement slurry, and the loss of cement slurry can reach more than 80%.
Therefore, when pure cement grout is used for high-spray anti-seepage grouting, the loss of engineering materials will be too large, and the construction cost will increase

Method used

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  • Flocculating agent for cement high pressure jet grouting and preparation method and application thereof
  • Flocculating agent for cement high pressure jet grouting and preparation method and application thereof

Examples

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preparation example Construction

[0031] like figure 1 A kind of preparation method of flocculant for cement high-pressure jet grouting shown, comprises the following steps:

[0032] Step 1. Raw material weighing and fully dissolving: first weigh the five raw materials of konjac glucomannan (KGM), carbonate, rheological agent, dispersant and early strength agent according to the designed ratio; After adding water to the five raw materials and fully dissolving them respectively, konjac glucomannan solution, carbonate solution, rheological agent solution, dispersant solution and early strength agent solution were correspondingly prepared;

[0033] Step 2. Prepare mixed slurry: Pour the konjac glucomannan solution, carbonate solution, rheological agent solution, dispersant solution and early strength agent solution into the container at the same time as described in step 1, and stir evenly to obtain a mixed slurry ;

[0034]Step 3, distillation, pulverization, spray drying and sieving: put the mixed slurry in s...

Embodiment 1

[0041] In this embodiment, when preparing the flocculant for cement high-pressure jet grouting, first weigh out 4.0kg konjac glucomannan, 2.5kg sodium carbonate, 1.0kg rheological agent, 1.5kg dispersant and 1.0kg early strength agent; Then put five kinds of raw materials weighed out and water (the amount of water added is determined according to the quality of the five kinds of raw materials and their respective solubility respectively) into plastics, glass or enamel containers and fully mixed and stirred evenly. Carry out fully dissolving, and respectively make corresponding quality and fully dissolved konjac glucomannan solution, carbonate solution, rheology agent solution, dispersant solution and early strengthening agent solution; Then, again described konjac glucomannan The polysaccharide solution, the carbonate solution, the rheological agent solution, the dispersant solution and the early strength agent solution are respectively put into plastic, glass or enamel contain...

Embodiment 2

[0045] In this example, when preparing the flocculant for cement high-pressure jet grouting, the difference from Example 1 is: first weigh out 4.5kg of konjac glucomannan, 2.8kg of sodium carbonate, 1.2kg of rheological agent, and 1.7kg of dispersant agent and 1.2kg early-strength agent; then put the weighed five kinds of raw materials and water (the amount of water added is determined according to the quality of the five kinds of raw materials and their respective solubility) respectively into plastic, glass or enamel containers for full mixing Stir evenly, above-mentioned five kinds of raw materials are fully dissolved, and respectively make corresponding quality and fully dissolved konjac glucomannan solution, carbonate solution, rheology agent solution, dispersant solution and early strength agent solution; , and then the konjac glucomannan solution, carbonate solution, rheological agent solution, dispersant solution and early strength agent solution are respectively simult...

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Abstract

The invention discloses a flocculating agent for cement high pressure jet grouting and preparation method and application thereof. The flocculating agent is composed of konjac glucomannan, carbonate, rheological agent, dispersing agent, early strength agent and water by uniform stirring, distillation and smashing, and the weight ratio of the konjac glucomannan, carbonate, rheological agent, dispersing agent and early strength agent is 35-45: 22-28: 8-12: 13-17: 8-12; the preparation thereof includes the steps: raw material weighing and fully dissolution, mixed slurry confecting and distillation, spray drying, smashing and sieving; and the application thereof includes the steps: admixture determination, flocculating agent cement slurry confecting and slurry grouting completing by utilizinghigh pressure jet grouting process. The invention has simple preparation step, low cost and simple and convenient use and has no harm on human body, application in high pressure jet grouting construction is simple and convenient and processing effect is good, and the problems that pure cement slurry has poor adhesion, high cement slurry drain, high construction cost and influence on construction progress existed in high pressure jet impermeable grouting can be solved.

Description

technical field [0001] The invention belongs to the technical field of cement high-pressure jet grouting anti-seepage construction, and in particular relates to a flocculant for cement high-pressure jet grouting and its preparation method and application. Background technique [0002] In the anti-seepage construction of hydraulic cofferdam body, the current high-pressure jet grouting process uses pure cement grout for grouting, and pure cement grout is easy to separate slurry and water, so it has poor adhesion to gravel soil and easily causes grout loss. Especially when the void ratio is too large due to the unreasonable gradation of gravel soil in the cofferdam body, and the water permeability caused by the large joint crack opening and geological fault zone is large, the method of high-spray anti-seepage grouting with pure cement slurry The difficulty of completing the anti-seepage wall is further increased, and it is easy to cause a large amount of loss of cement slurry, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38
Inventor 谢凯军赵建明屈高见
Owner SINOHYRDO ENG BUREAU 3 CO LTD
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