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

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, ...

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

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