Super-high early-strength micro-expansive double liquid grouting material and preparation method of same

A double-liquid grouting and micro-expansion technology, applied in the field of inorganic non-metallic building materials, can solve the problems of long initial setting and final setting time, low early strength, etc.

Inactive Publication Date: 2013-12-18
WUHAN METRO GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current cement grouting materials have a long initial setting and final setting time, and low early strength, which is difficult to meet the requirements of some grouting projects. The material sets quickly and has good early strength and micro-expansion performance requirements.

Method used

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  • Super-high early-strength micro-expansive double liquid grouting material and preparation method of same
  • Super-high early-strength micro-expansive double liquid grouting material and preparation method of same
  • Super-high early-strength micro-expansive double liquid grouting material and preparation method of same

Examples

Experimental program
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Effect test

Embodiment 1～10

[0054] A super-early-strength micro-expansion double-liquid grouting material, the preparation process of which comprises the following steps: firstly weighing sulfoaluminate cement, ordinary Portland cement, lithium slag, metakaolin, boric acid and water according to the measurement, and then weighing them Pour into a stirring container and mix for 1 minute to form liquid A and transport it to the site; at the same time, prepare the required water glass solution (liquid B) and store it in a container separately, but the storage time should not exceed one day; then add liquid A and B. The liquid was mixed in another container for 10 seconds and then perfused immediately. The distribution ratio of each group in Examples 1 to 10 is shown in Table 1 below.

[0055] The strength grade of the above sulfoaluminate cement is greater than or equal to 42.5, and the specific surface area is greater than 350m 2 / kg; the strength grade of the above ordinary Portland cement is greater than...

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Abstract

The invention belongs to the field of building materials, and relates to a super-high early-strength micro-expansive double liquid grouting material and a preparation method of the same. The double liquid grouting material provided by the invention is composed of liquid A and liquid B, wherein the liquid A is composed of the following constituents in parts by weight: 1 part of sulphate aluminium cement, 0.4 part of ordinary Portland cement, 0.5-0.7 part of lithium slag, 1.3-1.5 parts of metakaolin, 0.002-0.004 part of boric acid and 1.3-1.5 parts of water; the liquid B is composed of 0.5 part by weight of water glass solution. According to the invention, the industrial residue (lithium slag) generated after lithium salt extraction is used rationally, moreover, compounding is simple, preparation method is simple, production cost is low, requirement of a grouting device can be satisfied, early strength and later strength of the prepared double liquid grouting material are obviously higher than those of the ordinary double liquid grouting material, and the prepared double liquid grouting material has micro-expansive compensation performance and better water corrosion resistance.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic building materials, and in particular relates to a super-early-strength micro-expansion double-liquid grouting material and a preparation method thereof. Background technique [0002] With the development of national economic construction, the number of underground projects is increasing, and the development of shield tunnel construction technology is also extremely rapid. As some important technologies in shield construction, double-liquid grouting materials have been paid more and more attention. The current cement grouting materials have long initial setting time and final setting time, and low early strength, so it is difficult to meet the requirements of some grouting projects that the material sets quickly and has good early strength and micro-expansion performance requirements. [0003] Lithium slag is an industrial waste slag discharged from the production of lithium carbonate product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06
Inventor 周少东徐建平丁庆军胡曙光苗强林文书徐海清黄修林王红喜许可林建平王彪弓子成
Owner WUHAN METRO GROUP
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