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High-anti-permeability cement-based repair material for tunnel engineering and preparation method thereof

A technology for tunnel engineering and repairing materials, applied in the field of high-impermeability cement-based repairing materials and their preparation, can solve the problems of poor waterproof performance of protective repairing linings, unsatisfactory compressive and tensile strengths, and low impermeability pressure, etc. The effect of solving the problem of water leakage in the tunnel, improving the operating environment of the tunnel, and high anti-seepage pressure

Active Publication Date: 2019-12-31
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high impermeability cement-based repair material for tunnel engineering and its preparation method to solve the problem of poor waterproof performance, low impermeability pressure, low compressive strength and tensile strength of the protective repair lining in the prior art. Ideal, technical issues with insufficient resilience

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1, a high-impermeability cement-based repair material for tunnel engineering, which consists of the following raw materials in parts by weight: 100 parts of ordinary Portland cement, 10 parts of fly ash, 5 parts of silica fume, and 30 parts of steel slag powder , 15 parts of rock powder, 20 parts of tailings sand, 300 parts of quartz sand, 5 parts of attapulgite, 45 parts of acrylate emulsion (solid content 45%), 1.0 part of cellulose ether, 0.45 part of polyacrylamide, 0.5 part of PVA fiber , 2.5 parts of PET fiber, 1.5 parts of polycarboxylate water reducer, 2.8 parts of defoamer, and 30 parts of water.

[0032] The preparation method of the above-mentioned high impermeability cement-based repair material for tunnel engineering comprises the following steps:

[0033] (1) Take the above proportioning raw materials, mix Portland cement, fly ash, silica fume, steel slag powder, rock powder, attapulgite, PVA fiber and PET fiber;

[0034] (2) Mix acrylic emulsion,...

Embodiment 2

[0036] Example 2, a high-impermeability cement-based repair material for tunnel engineering, consisting of the following raw materials in parts by weight: 100 parts of 52.5 grade ordinary Portland cement, 40 parts of fly ash, 20 parts of silica fume, steel slag powder 28 parts, 5 parts of rock powder, 50 parts of tailing sand, 130 parts of quartz sand, 10 parts of attapulgite, 70 parts of acrylate emulsion (solid content 60%), 0.1 part of cellulose ether, 1.0 part of polyacrylamide, PVA fiber 3.0 parts, 0.6 parts of PET fiber, 2.5 parts of polycarboxylate water reducer, 0.8 parts of defoamer, 50 parts of water. The preparation method of the above-mentioned high impermeability cement-based repair material for tunnel engineering is the same as that in Example 1.

Embodiment 3

[0037] Example 3, a high impermeability cement-based repair material for tunnel engineering, which consists of the following raw materials in parts by weight: 100 parts of 52.5 grade ordinary Portland cement, 20 parts of fly ash, 10 parts of silica fume, steel slag 5 parts of powder, 20 parts of rock powder, 45 parts of tailing sand, 50 parts of quartz sand, 2 parts of attapulgite, 10 parts of acrylate emulsion (solid content 60%), 0.8 part of cellulose ether, 0.6 part of polyacrylamide, PVA 1.0 parts of fiber, 0.8 parts of PET fiber, 1.0 parts of polycarboxylate water reducer, 1.2 parts of defoamer, and 25 parts of water. The preparation method of the above-mentioned high impermeability cement-based repair material for tunnel engineering is the same as that in Example 1.

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PUM

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a high-anti-permeability cement-based repair material for tunnel engineering. The repair material consists of portland cement, coal ash, silica fume, steel slag powder, rock powder, tailing sand, quartz sand, attapulgite, acrylate emulsion, cellulose ether, polyacrylamide, PVA fibers, PET fibers, a polycarboxylic acid water reducer and a defoaming agent. The repair material has the characteristics of easy construction, good working performance, good water retention performance, high compressive strength, high anti-permeability level, high toughness and adhesion, excellent durability and the like; and the repair material can be suitable for construction initial protection or engineering later maintenance and repair of lining concrete in the tunnel engineering.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high-impermeability cement-based repair material for tunnel engineering and a preparation method thereof. Background technique [0002] At present, the economic development of various parts of my country is unbalanced, and the infrastructure construction in the central and western regions is lagging behind, which seriously restricts the local economic development and the improvement of people's living standards; my country's terrain is complex, and more than two-thirds of the land is hilly and mountainous. In recent years, the country has continuously vigorously promoted the development of highways and railways in the central and western regions in order to gradually narrow the development gap between the east, the west and the west. Accounting for a large proportion of roads and railways in mountainous and hilly areas, the construction of tunnel projects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/27
CPCC04B28/04C04B2111/00724C04B2111/27C04B2201/52C04B2201/50C04B18/08C04B18/146C04B18/142C04B14/048C04B18/12C04B14/06C04B14/102C04B24/2641C04B24/383C04B24/2652C04B2103/302C04B24/42C04B16/0641C04B16/0683
Inventor 马留闯孟春峰赵宏博曹光云李晓涛郭俊峰刘宾解攀谢宜恒程文明王亚楠孟祥辉
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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