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A grouting material behind the tunnel wall

A post-grouting, tunnel wall technology, applied in the field of construction engineering, to achieve the effect of adjustable vibration isolation performance

Active Publication Date: 2021-07-30
CHINA MINING & CIVIL NEW MATERIAL SCI & TECH LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the use of grouting materials behind the tunnel wall for vibration isolation applications has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A post-grouting material for tunnel walls, comprising 98 parts by weight of basic performance components, 2 parts by weight of vibration isolation performance components, and 98 parts by weight of water.

[0031] The basic performance components are composed of 50wt% J1 material and 50wt% J2 material, and the J1 material is composed of 90wt% cement sintering material and 10wt% auxiliary agent; the cement sintering material is aluminate cement sintering material, and the auxiliary agent It is the BX type JT1 additive of Yangzhou Zhongkuang Building New Material Technology Co., Ltd. (the additive is a mixture of a suspension dispersant and a retarder, and the mass ratio of the two is 4:1).

[0032] The J2 material is composed of 90% base material (gypsum and lime in a weight ratio of 17:3) and 10% auxiliary material. The auxiliary material is the BX type JT2 additive of Yangzhou Zhongkuang Building New Material Technology Co., Ltd., which is The mixture of accelerator and...

Embodiment 2

[0038] A post-grouting material for tunnel walls, comprising 99.5 parts by weight of basic performance components, 0.5 parts by weight of vibration-isolation performance components, and 199 parts by weight of water.

[0039] The basic performance components are composed of 50wt% J1 material and 50wt% J2 material, and the J1 material is composed of 90wt% cement sintering material and 10wt% auxiliary agent; the cement sintering material is aluminate cement sintering material, and the auxiliary agent It is the BX type JT1 additive of Yangzhou Zhongkuang Building New Material Technology Co., Ltd. (the additive is a mixture of a suspension dispersant and a retarder, and the mass ratio of the two is 4:1).

[0040] The J2 material is composed of 90% base material (gypsum and lime in a weight ratio of 17:3) and 10% auxiliary material. The auxiliary material is the BX type JT2 additive of Yangzhou Zhongkuang Building New Material Technology Co., Ltd., which is The mixture of accelerato...

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Abstract

The invention relates to a post-grouting material for tunnel walls, which comprises 90-100 parts by weight of basic performance components, 0.5-5 parts by weight of vibration-isolation performance components and 90-300 parts by weight of water; the basic performance components are composed of J1 material and Composed of J2 material, the J1 material is composed of 85-95wt% cement sintered material and 5-15wt% additive; the J2 material is composed of 90% base material and 10% auxiliary material, wherein the base material is gypsum and lime A mixture of any proportion, the auxiliary material is a mixture of accelerator, early strength agent and suspension dispersant in any proportion. The invention provides a new idea of ​​using the grouting material behind the tunnel wall for vibration isolation, and expands the function of the grouting behind the wall. The grouting material can better adapt to the vibration characteristics of the tunnel. The ratio of air-entraining agent and vibration isolation particles realizes the adjustable vibration isolation performance of the material.

Description

technical field [0001] The invention relates to a post-grouting material for a tunnel wall, belonging to the technical field of construction engineering. Background technique [0002] Underground rail transit has the advantages of large capacity, safety, speed, punctuality, convenience and comfort, and is an ideal means of transportation to solve urban traffic problems. With the network construction and operation of subways in major cities in China, and the continuous improvement of people's environmental requirements, vibration problems generated by subway operations have become increasingly prominent. When the subway is running, random vibration excitation is generated on the subway track. The excitation is transmitted to the ground and ground buildings through the track structure, tunnel structure, and surrounding soil medium, causing vibration of the ground buildings, and even arousing vibrations of doors, windows, equipment, etc. in the structure. Make a sound and gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B111/20C04B111/70
CPCC04B28/14C04B2111/00724C04B2111/2046C04B2111/70C04B2/00C04B7/32C04B2103/22C04B2103/408C04B2103/12C04B18/027C04B24/34
Inventor 谢伟夏军武柏建彪郑玉莹王秋分韩有民
Owner CHINA MINING & CIVIL NEW MATERIAL SCI & TECH LTD