Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

A technology for tunnel engineering and repair materials, which is applied in the field of high impermeability cement-based repair materials and its preparation, can solve the problems of poor waterproof performance, unsatisfactory compressive and tensile strength, and low impermeability pressure of protective and repair linings, and achieve Solve the problem of tunnel water leakage, improve the operating environment of the tunnel, and have the effect of high anti-seepage pressure

Active Publication Date: 2021-12-24
CHINA RAILWAY TUNNEL GROUP CO LTD +1
View PDF11 Cites 1 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of building materials, and specifically relates to a high-impermeability cement-based repair material for tunnel engineering, which is composed of Portland cement, fly ash, silica fume, steel slag powder, rock powder, tailings sand, quartz sand, Attapulgite, acrylate emulsion, cellulose ether, polyacrylamide, PVA fiber, PET fiber, polycarboxylate water reducer and defoamer. The invention has the characteristics of easy construction, good workability, good water retention, high compressive strength, high impermeability grade, high toughness, cohesiveness and excellent durability; the product of the invention can be applied to the construction of lining concrete in tunnel engineering Initial protection or post-project maintenance and repair.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com