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Reticular fiber sand and preparation method thereof

A technology of mesh fiber and fiber, applied in the field of mesh fiber sand and its preparation, can solve the problem of small swelling, achieve short gelation time, shorten gelation time, and good application effect

Pending Publication Date: 2021-03-05
DONGYING HUIYOU GASOLINEEUM NEW TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a reticulated fiber sand and its preparation method to solve the problem of relatively small swelling in the plugging used in the prior art

Method used

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  • Reticular fiber sand and preparation method thereof

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preparation example Construction

[0025] The preparation method of described reticular fiber sand, comprises the following steps:

[0026] (1) The construction waste aerated concrete is crushed to particles with a particle size of ≤5.2mm to obtain the construction waste aerated concrete;

[0027] (2) Add cement, sand, fiber, bentonite, water suppressant, potassium fluoride, ethylene-tetrafluoroethylene copolymer, sodium bicarbonate, coupling agent, 2-ethyl methacrylate, N, N-diethyl After the base aniline is stirred for 9-12 minutes at a microwave power of 100-160W, a temperature of 50-60°C, and a rotation speed of 200-300r / min, the shell material is made;

[0028] (3) Pre-absorb the construction waste aerated concrete prepared in step (1) until the water content is 13%-20%, put it into a ball forming pan, roll continuously in the ball forming pan, and spray 40-70 parts by weight After the styrene-acrylic emulsion wets the surface of the particles, the shell material prepared in step (2) is evenly sprinkled i...

Embodiment 1

[0032] A kind of reticular fiber sand: the inner core is construction waste aerated concrete, and the inner core is wrapped with a shell with a thickness of 0.12mm. The shell, in parts by weight, includes the following raw materials: 125 parts of cement, sand 76 parts, 7 parts of fiber, 18 parts of bentonite, 5 parts of water suppressant, 25 parts of potassium fluoride, 22 parts of ethylene-tetrafluoroethylene copolymer, 65 parts of sodium bicarbonate, 2.1 parts of coupling agent, 2-methacrylic acid 8 parts of ethyl ester, 3 parts of N, N-diethylaniline; the sand is river sand with a particle size of 8-32 μm; the fiber is basalt fiber; the water inhibitor is linear methyl hydrogen-containing polymer Siloxane; the coupling agent is coupling agent kh-560;

[0033] The preparation method of described reticular fiber sand, comprises the following steps:

[0034] (1) Building waste aerated concrete is obtained by crushing construction waste aerated concrete to particles with a par...

Embodiment 2

[0039] A kind of reticular fiber sand: the inner core is construction waste aerated concrete, and the inner core is wrapped with a shell with a thickness of 0.09mm. The shell, in parts by weight, includes the following raw materials: 85 parts of cement, sand 50 parts, 6 parts of fiber, 10 parts of bentonite, 3 parts of water suppressant, 16 parts of potassium fluoride, 12 parts of ethylene-tetrafluoroethylene copolymer, 55 parts of sodium bicarbonate, 1.6 parts of coupling agent, 2-methacrylic acid 7 parts of ethyl ester, 2 parts of N, N-diethylaniline; the sand is river sand with a particle size of 8-36 μm; the fiber is basalt fiber; the water inhibitor is linear methyl hydrogen-containing polymer Siloxane; the coupling agent is coupling agent kh-560;

[0040] The preparation method of described reticular fiber sand, comprises the following steps:

[0041] (1) Building waste aerated concrete is obtained by crushing construction waste aerated concrete to particles with a part...

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Abstract

The invention discloses reticular fiber sand which comprises an inner core and a shell, and the shell is prepared from the following raw materials in parts by weight: 80-156 parts of cement, 45-100 parts of sand, 5-8 parts of fiber, 10-24 parts of bentonite, 3-6 parts of a water suppressant, 15-32 parts of potassium fluoride, 10-30 parts of an ethylene-tetrafluoroethylene copolymer, 52-70 parts ofsodium bicarbonate, 1.4-3 parts of a coupling agent, 6-10 parts of ethyl methacrylate, and 2-4 parts of N,N-diethylaniline. The reticular fiber sand is prepared by the steps of preparing building waste aerated concrete, preparing a shell material, preparing spherical particles, carrying out autoclaved curing and the like. The swelling ratio of the reticular fiber sand reaches 84.6 g / g or above, the reticular fiber sand can be quickly gelled to form a white emulsion, the gelling time is shortened, the application effect is good, the plugging risk is greatly reduced, and the reticular fiber sand can be vigorously popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of plugging, and in particular relates to a reticular fiber sand and a preparation method thereof. Background technique [0002] The key problem of frequent water inrush disasters during tunnel construction is that the occurrence mechanism of tunnel water inrush and landslide disasters in karst areas is extremely complex, and the technical level of disaster control is extremely high. Although relevant scholars at home and abroad have developed different grouting materials and proposed different treatment methods for different engineering problems. However, the karst water-rich area has the characteristics of strong water supply, complex geological structure, strong hydraulic connectivity and pressure state, large flow rate, and fast flow rate, which makes the existing grouting materials and treatment technology systems lack pertinence, and it is difficult to realize the above-mentioned disasters. The effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B28B1/50B28B11/24
CPCB28B1/50B28B11/245C04B28/00C04B2111/00017C04B2111/00724C04B14/06C04B14/104C04B24/42C04B22/126C04B24/26C04B22/10C04B24/045C04B24/121C04B14/4643C04B18/16
Inventor 张宁曾才敏张晔桐
Owner DONGYING HUIYOU GASOLINEEUM NEW TECH DEV
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