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Rubber particle anti-seismic synchronous grouting material

A technology of simultaneous grouting and rubber granulation, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as poor earthquake resistance and seismic performance

Pending Publication Date: 2020-09-01
CHINA RAILWAY 14TH BUREAU GRP LARGE SHIELD ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem of the existing synchronous grouting material having poor anti-seismic performance, the invention provides a rubber particle anti-seismic synchronous grouting material. The invention adds rubber particles to the synchronous grouting material to keep the elastic modulus of the synchronous grouting material At a lower level, it can effectively fill the gaps in the segment, play a waterproof and anti-subsidence role during tunnel construction, and can effectively absorb energy when an earthquake disaster occurs, provide buffer for the segment, and play a role in earthquake resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A rubber particle anti-seismic synchronous grouting material, comprising the following raw materials in parts by weight:

[0022] 80 parts of cement, 650 parts of waste tire rubber particles, 390 parts of water, 250 parts of fly ash, 90 parts of special soil, 11.5 parts of admixture, among which, the cement is 425 cement;

[0023] The particle size of waste tire rubber particles satisfies the following gradation:

[0024] Table 1 Particle size gradation of waste tire rubber particles

[0025] Mesh size, mm 2.00 1.60 1.00 0.50 0.16 0.08 Cumulative sieve residue, % 0 7±5 33±5 67±5 87±5 99±1

;

[0026] The water is tap water;

[0027] Fly ash is conventional fly ash;

[0028] The special soil is bentonite;

[0029] The admixture is a naphthalene-based high-efficiency water reducer;

[0030] The preparation method comprises the following steps:

[0031] According to the feeding sequence of aggregate, cement, fly ash, special soil, water...

Embodiment 2

[0033] A rubber particle anti-seismic synchronous grouting material, comprising the following raw materials in parts by weight:

[0034] 70 parts of cement, 595 parts of waste tire rubber particles, 350 parts of water, 200 parts of fly ash, 80 parts of special soil, and 10 parts of admixture, among which, the cement is 425 cement;

[0035] The size gradation of waste tire rubber particles is the same as in Example 1;

[0036] The water is tap water;

[0037] Fly ash is conventional fly ash;

[0038] The special soil is red clay;

[0039] The admixture is a mixture of carboxylic acid-based superplasticizer and melamine-based superplasticizer;

[0040] The preparation method comprises the following steps:

[0041] According to the feeding sequence of waste tire rubber granules, cement, fly ash, special soil, water and admixture, each raw material is slowly and evenly put into the mixing device in turn, and the rubber granule anti-seismic synchronous grouting material is obta...

Embodiment 3

[0043] A rubber particle anti-seismic synchronous grouting material, comprising the following raw materials in parts by weight:

[0044] 90 parts of cement, 685 parts of aggregate, 450 parts of water, 300 parts of fly ash, 110 parts of special soil, 12 parts of admixture, among which, the cement is 425 cement;

[0045] Aggregate includes waste tire rubber particles and sand with a ratio of parts by weight of 1:4, the sand is ordinary construction sand, and the size gradation of waste tire rubber particles is the same as in Example 1;

[0046] The water is tap water;

[0047] Fly ash is conventional fly ash;

[0048] The special soil is a mixture of bentonite and red clay;

[0049] The admixture is sulfamic acid high-efficiency water reducer;

[0050] The preparation method comprises the following steps:

[0051] According to the feeding sequence of aggregate, cement, fly ash, special soil, water, and admixture, each raw material is slowly and evenly put into the mixing dev...

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Abstract

The invention relates to the technical field of synchronous grouting. The invention relates to a rubber particle anti-seismic synchronous grouting material. The synchronous grouting material is prepared from the following raw materials in parts by weight: 70 to 90 parts of cement, 595 to 685 parts of aggregate, 350 to 450 parts of water, 200 to 300 parts of fly ash, 80 to 110 parts of special soiland 10 to 12 parts of additive, wherein the aggregate is rubber particles or a mixture of the rubber particles and sand. The synchronous grouting material disclosed by the invention is low in elasticity modulus, can effectively fill gaps of duct pieces, plays due waterproof and anti-settling roles during tunnel construction, and can effectively absorb energy and provide buffer for the duct pieceswhen earthquake disasters happen, thereby playing a shockproof and anti-seismic role.

Description

technical field [0001] The invention relates to the technical field of synchronous grouting, in particular to a rubber particle anti-seismic synchronous grouting material. Background technique [0002] The most commonly used synchronous grouting in shield tunnel construction includes synchronous single-liquid grouting and double-liquid grouting. The synchronous single-liquid grout is mainly ordinary cement rubber particle grout; Two pipelines are pumped, mixed in the shield tail grouting hole and injected into the shield tail gap. The A slurry is generally cement-based material, and the B slurry is usually made of water glass material as a hardener. After mixing, the gelation time of the slurry is generally within 1min. , and has high early strength, and the strength can reach 0.1-0.5MPa in one hour. However, currently used synchronous grouting materials have defects in anti-seismic aspects. The existing synchronous grouting materials have small deformation ability after s...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/22C04B20/00C04B111/20C04B111/27
CPCC04B28/00C04B18/22C04B2111/2046C04B2111/2053C04B2111/27C04B2111/00724Y02W30/91
Inventor 刘四进商跃锋王军庄绪良王德福张成君刘国栋许福义程辉高卫东李剑葛晶晶张敏刘勇
Owner CHINA RAILWAY 14TH BUREAU GRP LARGE SHIELD ENG CO LTD
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