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Anti-dispersion fiber bentonite flowing water grouting material and preparation method thereof

A grouting material and technology of bentonite, applied in the field of anti-dispersion fiber bentonite dynamic water grouting material and its preparation field, can solve the problems affecting the stability and durability of reinforcement slurry, high pumpability consolidation strength, uncommon reinforcement slurry, etc. problems, to achieve the effects of stable and controllable reinforcement performance, strong resistance to seawater scouring, and excellent underwater stability

Pending Publication Date: 2022-04-01
HARBIN INST OF TECH +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A large number of soil reinforcement grouts have been widely used in construction and road fields in China. However, reinforcement grouts for hydrodynamic grouting are not common.
Under dynamic water conditions, it is difficult for slurry materials to meet the construction requirements of good pumpability, water dispersion resistance, controllable setting time, and high consolidation strength at the same time, and the existence of various minerals in water will affect the stability and durability of traditional reinforcement slurry property, so that the reinforcement effect is not ideal

Method used

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preparation example Construction

[0025] A kind of preparation method of anti-dispersion fiber bentonite dynamic water grouting material of the present invention, described method comprises the following steps:

[0026] S1: Weigh the raw materials according to the mass percentage, make the bentonite into a bentonite slurry, and stir evenly,

[0027] S2: Then the polypropylene fibers are evenly sprinkled into the bentonite slurry, and stirred until the polypropylene fibers are not agglomerated or bundled. The dosage of monofilament-bundled polypropylene fibers should be strictly controlled, and special attention should be paid to the fact that polypropylene fibers should be slowly and evenly sprinkled into the slurry during the stirring process to avoid excessive or uneven distribution of polypropylene fibers in the slurry and to prevent late injection. pulp is inconvenient.

[0028] S3: According to the existing slurry quality, configure corresponding auxiliary agents, and determine the dosage of each content...

Embodiment 1

[0032] A kind of anti-dispersion fiber bentonite dynamic water grouting material, by mass percentage: bentonite (33%), water (40%), cement (15%), auxiliary agent (10%) and polypropylene fiber (2%) Get raw materials, wherein the ratio of additives is: silicon dioxide (20%), calcium oxide (30%), potassium aluminum sulfate (35%), sodium hydroxide (15%).

[0033] The preparation process of this embodiment is:

[0034] S1: Make bentonite slurry into bentonite slurry and stir evenly,

[0035] S2: Then sprinkle the polypropylene fibers evenly into the bentonite slurry, and stir until the polypropylene fibers are not agglomerated into bundles,

[0036] S3: adding additives.

[0037] S4: Finally, add pozzolan Portland cement and stir evenly to obtain the anti-dispersion fiber bentonite solidified slurry.

[0038] Compared with the traditional solidified slurry without fiber, the permeability coefficient of this embodiment is reduced by 4 orders of magnitude, the compressive strength...

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Abstract

The invention discloses an anti-dispersion fiber bentonite flowing water grouting material and a preparation method thereof, and belongs to the technical field of civil engineering grouting leaking stoppage reinforcement. The composite material is composed of bentonite, water, cement, an auxiliary agent and polypropylene fiber according to a weight ratio. The preparation method comprises the following steps: preparing bentonite slurry, uniformly stirring, scattering the polypropylene fibers into the bentonite slurry, stirring, preparing the auxiliary agent, adding, and adding the cement. According to the characteristics of flowing water grouting, a proper amount of polypropylene fibers are added on the basis of traditional reinforcing slurry, and the bentonite fiber curing slurry which is excellent in underwater stability, resistant to dilution, high in underwater strength and good in durability in a flowing water environment is formed. The device can be widely applied to seepage-proofing and leakage-stopping grouting construction of flowing water areas such as reservoir dams and karst, and guarantees are provided for engineering construction and development in various flowing water environments.

Description

technical field [0001] The invention relates to an anti-dispersion fiber bentonite dynamic water grouting material and a preparation method thereof, belonging to the technical field of civil engineering grouting plugging and strengthening. Background technique [0002] With the development of society, the scale of my country's transportation engineering construction is showing a continuous growth trend, making the geological conditions faced by various engineering constructions increasingly complex, and geological disasters such as settlement deformation, quicksand, piping, and submerged erosion seriously threaten the engineering. Safety. Engineering practice shows that grouting is an efficient technical means to deal with geological disasters and disease control in engineering, and it has the functions of strengthening rock and soil structure and sealing hydraulic channels. Among them, the reinforcement of structures under dynamic water conditions is a great test for grouti...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/02C04B14/10C04B16/06C04B111/70C04B111/34
Inventor 凌贤长韩笑郭小雨陈宏伟唐亮龚英杰熊钦武王名远胡心雨姚建平
Owner HARBIN INST OF TECH
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