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Early-strength micro-expanding synchronous grouting material prepared from shield tailings and preparation method of synchronous grouting material

A technology of shield tailings and synchronous grouting, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of adverse impact on the living environment, occupying urban space, etc., and achieve good water dispersion resistance , Improve the flow performance and pumping performance, and reduce the loss of fluidity

Inactive Publication Date: 2013-12-18
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, a large amount of underground tailings (shield tailings) will be brought out during the construction of the shield method. No matter what method is used, the treatment of these shield tailings will consume a lot of manpower and material resources, and occupy urban space. adverse impact on the environment

Method used

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  • Early-strength micro-expanding synchronous grouting material prepared from shield tailings and preparation method of synchronous grouting material
  • Early-strength micro-expanding synchronous grouting material prepared from shield tailings and preparation method of synchronous grouting material

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Embodiment 1～7

[0042] A shield tunnel synchronous grouting material prepared by using shield tailings instead of bentonite and river sand, the preparation method comprising the following steps:

[0043] (1) Weigh the component raw materials according to the weight ratio: cement, ultrafine zeolite powder, metakaolin, quicklime, periclase, phosphate, polymer, shield tailings, high-efficiency water reducer and water, and distribute each component For details, see Table 2 below;

[0044] (2) Mix cement, ultrafine zeolite powder, metakaolin, quicklime, periclase and polymer evenly, then add shield tailings, and dry mix together for 3 minutes to obtain a dry mixture;

[0045] (3) Dissolve the high-efficiency water reducer in water and stir it evenly, then add it to the dry mixture described in step (2), and mix and stir for 3 minutes to obtain a slurry, which should be kept stirring continuously during storage;

[0046] (4) Prepare the phosphate into a phosphate solution with a mass concentration...

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Abstract

The invention belongs to inorganic non-metallic building materials, and particularly relates to a synchronous grouting material for shield tunnels and a preparation method of the synchronous grouting material. The synchronous grouting material disclosed by the invention comprises the following components in parts by weight (kg / m<3>): 250-350 parts of a cementing material, 0-60 parts of quick lime, 0-60 parts of periclase, 0-15 parts of phosphates, 1-2.8 parts of a high-efficiency water reducing agent, 0.5-2.6 parts of polymers, 850-1100 parts of shield tailings, and 205-475 parts of water. The synchronous grouting material prepared from the shield tailings is good in early strength, micro-expanding performance, working performance and water dispersion resistance. According to the synchronous grouting material disclosed by the invention, underground tailings brought out in the process of shield construction are reasonably used, thus the impact on the environment is reduced; the synchronous grouting material is simple in ingredients, low in manufacturing cost, easy to produce, and good in workability, and can satisfy the requirements of grouting equipment.

Description

technical field [0001] The invention belongs to the category of inorganic non-metal building materials, and in particular relates to a synchronous grouting material for shield tunnels and a preparation method thereof. Background technique [0002] With the rapid development of the world economy, urban subways have developed rapidly all over the world. However, the ever-increasing subway tunnels need to pass through a large number of underground pipelines, buildings, and various complex strata, especially when encountering soft clay strata with high water content and sand strata with high liquefaction degree, underground tunnel engineering is facing great challenges , synchronous grouting is an important process in shield tunneling construction, and the research on synchronous grouting materials for shield tunneling is particularly important. The current synchronous grouting materials are mainly divided into single-fluid, double-fluid and chemical grouting materials. Single-...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/16
CPCY02W30/91
Inventor 胡曙光徐建平周少东丁庆军林文书王红喜黄修林徐海清林建平许可田焜王彪弓子成
Owner WUHAN UNIV OF TECH
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