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Grouting material for reinforcing silty-fine sand layer and preparation method thereof

A technique for grouting material and fine sand, which is applied in the field of grouting material for reinforcing fine sand layer and its preparation field, can solve the problem of the need for reinforcing fine sand bottom layer, the inability to meet the viscosity and fluidity, etc., and the curing time is reached. Satisfy the effect of shortening stirring time and good mechanical properties

Pending Publication Date: 2022-03-04
SHIJIAZHUANG TIEDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the technical problem that the early viscosity and fluidity of the grouting material in the prior art cannot meet the needs of the reinforcement of the silt fine sand layer and hardens ahead of time during the construction process, the present invention provides a grouting material for the reinforcement of the silt fine sand layer and its The preparation method, the grouting material has low early viscosity, strong fluidity, and suitable curing time, which can meet the needs of grouting materials in the construction process of silt fine sand layer reinforcement

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  • Grouting material for reinforcing silty-fine sand layer and preparation method thereof

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Embodiment 1

[0024] The present embodiment provides a kind of grouting material for the reinforcement of powder fine sand layer, and its raw material is counted in parts by mass, including modulus is 3.0, Baume degree is 40 parts of water glass and 16 parts of ethyl acetate emulsion, The ethyl acetate emulsion is a mixture of ethyl acetate, emulsifier and water at a mass ratio of 1:0.01:1, and the emulsifier is a mixture of Tween 20 and Span 80, wherein the mass ratio of Tween 20 and Span 80 It is 19:1.

[0025] The preparation method of the grouting material for strengthening the fine sand layer specifically comprises the following steps:

[0026] S1: Weigh ethyl acetate, emulsifier and water according to the formula, stir and react in a mixer at 20°C at a speed of 400rad / min for 18min, and obtain an ethyl acetate emulsion with a viscosity of 8.60mPa·s and a molecular particle size of ≤0.75μm;

[0027] S2: Weigh the water glass and ethyl acetate emulsion according to the formula, mix and...

Embodiment 2

[0029] The present embodiment provides a kind of grouting material for the reinforcement of powder fine sand layer, and its raw material is counted in parts by mass, including modulus is 3.0, Baume degree is 30 parts of water glass and 15 parts of ethyl acetate emulsion, The ethyl acetate emulsion is a mixture of ethyl acetate, emulsifier and water at a mass ratio of 1:0.03:1, and the emulsifier is a mixture of Tween 20 and Span 80, wherein the mass ratio of Tween 20 and Span 80 It is 19:1.

[0030] The preparation method of the grouting material for strengthening the fine sand layer specifically comprises the following steps:

[0031] S1: Weigh ethyl acetate, emulsifier and water according to the formula, stir and react in a mixer at 15°C at a speed of 400rad / min for 18min, and obtain an ethyl acetate emulsion with a viscosity of 9.69mPa·s and a molecular particle size of ≤0.75μm;

[0032] S2: Weigh the water glass and ethyl acetate emulsion according to the formula, mix and...

Embodiment 3

[0034] The present embodiment provides a kind of grouting material for reinforcement of fine sand layer, and its raw material is counted in parts by mass, including modulus is 3.0, Baume degree is 40 parts of water glass and 24 parts of ethyl acetate emulsions of 38 ° be, The ethyl acetate emulsion is a mixture of ethyl acetate, emulsifier and water at a mass ratio of 1:0.03:0.8, and the emulsifier is a mixture of Tween 20 and Span 80, wherein the mass ratio of Tween 20 and Span 80 It is 19:1.

[0035] The preparation method of the grouting material for strengthening the fine sand layer specifically comprises the following steps:

[0036] S1: Weigh ethyl acetate, emulsifier and water according to the formula, stir and react in a mixer at a speed of 500rad / min for 18min at 25°C, and obtain an ethyl acetate emulsion with a viscosity of 12.41mPa·s and a molecular particle size of ≤0.75μm;

[0037] S2: Weigh the water glass and ethyl acetate emulsion according to the formula, mix...

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Abstract

The invention relates to the technical field of building materials, in particular to a grouting material for reinforcing a silty-fine sand layer and a preparation method thereof.The grouting material is prepared by mixing 35-45 parts of water glass and 10-30 parts of ethyl acetate emulsion, the viscosity of the ethyl acetate emulsion is 7-15 mPa.s, and the particle size of ethyl acetate is smaller than or equal to 0.75 micron. The grouting material prepared by mixing the ethyl acetate emulsion with specific viscosity and specific particle size and a specific amount of water glass has the characteristics of low initial viscosity, high fluidity and stable diffusion radius, the curing time is proper, and the solidified grouting material has excellent mechanical properties and can meet the requirements of the silty-fine sand layer reinforcement construction process on the grouting material.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a grouting material for reinforcing fine sand layers and a preparation method thereof. Background technique [0002] During the development of roadways, subways, and tunnels, it is often necessary to carry out construction in silt-fine sand strata. The silt-fine sand stratum is a typical mechanically unstable stratum with uniform particle size distribution and small inter-granular spaces. It is loose and easily deformed under the action of external loads. Therefore, there is a great risk of engineering accidents such as collapse and falling during the construction process, which seriously affects the safety and progress of the project. Therefore, before tunnel excavation, it is necessary to fix the bottom layer of silt and fine sand. [0003] It is a common method in engineering to improve and strengthen the performance of the silty sand layer through the ...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B111/70
CPCC04B28/26C04B2111/70C04B2201/50C04B2201/10C04B2111/00732C04B24/045C04B24/32C04B24/06C04B14/02
Inventor 高振国刘淼王耀高竞驰刘鑫王树栋李文江
Owner SHIJIAZHUANG TIEDAO UNIV
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