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Patching material for preventing and treating corrosion and disease of tunnel lining concrete salt

A technology for repairing materials and concrete, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as corrosion and deterioration, and achieve the effect of extending service life, improving salt erosion resistance, and strong applicability

Inactive Publication Date: 2012-11-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In order to solve the problem of severe corrosion and deterioration of the existing tunnel lining concrete under the action of salt erosion, this invention aims at the structural characteristics of the tunnel and the erosion mechanism of typical aggressive salts on cement-based materials in the natural environment, and uses the knowledge of cement concrete science, physical chemistry, etc. , put forward the technical principle of anti-salt erosion disease resistance by improving the resistance of the repair material itself to the chemical corrosion of erosive salts, the effective release of salt crystallization pressure, and the improvement of material toughness

Method used

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  • Patching material for preventing and treating corrosion and disease of tunnel lining concrete salt
  • Patching material for preventing and treating corrosion and disease of tunnel lining concrete salt
  • Patching material for preventing and treating corrosion and disease of tunnel lining concrete salt

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Embodiment

[0032] Table 1 Examples of mixing ratios of different samples used in the sulfate attack resistance test

[0033]

[0034] In Table 1: 1) the repair material of embodiment A is ordinary Portland cement, silica-alumina mineral component, expansion component, rubber-based polymer component, polyacrylonitrile fiber, and the mass ratio of coagulation adjustment component is: 60 :30:8:1:0.3:4;

[0035] 2) The repair material in Example B is ordinary Portland cement, silica-alumina mineral components, expansion components, rubber-based polymer components, polyacrylonitrile fibers, and the mass ratio of coagulation adjustment components is: 60:30:8 :2:0.3:4;

[0036] 3) The repair material in Example C is ordinary Portland cement, silica-alumina mineral components, expansion components, rubber-based polymer components, polyacrylonitrile fibers, and the mass ratio of coagulation adjustment components is: 60:30:8 :3:0.3:4;

[0037] 4) The repair material in Example D is ordinary ...

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Abstract

The invention discloses a patching material for preventing and treating the corrosion and the disease of a tunnel lining concrete salt. The patching material consists of ordinary portland cement, a silica alumina mineral component, an expansion component, a rubber mass polymer component, polyacrylonitrile fiber and a condensation adjusting component, wherein the mass ratio of the components is 60:30:8:2-3:0.3:2-4. The patching material can be used for effectively patching, preventing and treating the corrosion and the disease of the tunnel lining structural salt, obviously improving the endurance quality of the existing disease tunnel structure, and prolonging the service life of the tunnel structure, and has the characteristics of being high in cost performance, simple to operate and good in adaptability.

Description

technical field [0001] The invention relates to a cement-based repair material for preventing and curing the salt erosion disease of tunnel lining concrete, which prolongs the service life of the existing tunnel lining concrete structure under the condition of salt erosion. Background technique [0002] Tunnel is a kind of cavity-shaped structure buried under (rock) soil layer. The outside is affected by the surrounding rock (soil) and water and ion medium in the rock layer; the internal structure is adjacent to the air and is affected by the relatively closed atmospheric environment; At the same time, in the operating state, it is also affected by the operation of pedestrians and vehicles. [0003] The special structural type of the tunnel is obviously different from the general concrete structure, which is mainly reflected in the fact that both the inside and outside of the lining concrete structure are affected by the environmental medium, and the damage and deterioration...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04Y02W30/91C04B16/0658C04B18/06C04B18/08C04B18/146C04B18/22C04B22/008C04B22/143C04B24/04C04B24/2611C04B7/323
Inventor 龙广成吴敏李小昆翁璧石谢友均
Owner CENT SOUTH UNIV
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