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A kind of interfacial agent for repairing corrosion damaged parts of reinforced concrete structures

A technology for reinforced concrete and structures, applied in the field of building materials, can solve problems such as the inability of new and old concrete to be jointly stressed, secondary penetration and erosion of corrosive ions, and cracks, etc., to reduce bacterial growth, reduce pollution, and improve compactness. Effect

Active Publication Date: 2018-01-30
HENAN PROVINCIAL TRANSPORTATION RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is not handled properly, the following problems often occur at the joint site: the new and old concrete cannot be jointly stressed; cracks occur between the temperature shrinkage of the new concrete and the old concrete, and subsequent diseases occur; secondary penetration and erosion of corrosive ions in the repair material, etc.

Method used

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  • A kind of interfacial agent for repairing corrosion damaged parts of reinforced concrete structures
  • A kind of interfacial agent for repairing corrosion damaged parts of reinforced concrete structures
  • A kind of interfacial agent for repairing corrosion damaged parts of reinforced concrete structures

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A kind of interfacial agent for repairing the corrosion damage part of reinforced concrete structure, it comprises slurry A and slurry B; In terms of parts by weight, said slurry A is composed of the following components: bisphenol A type epoxy 7 parts of resin E51, 3 parts of bisphenol F epoxy resin, 1 part of 660 reactive diluent, 1.5 parts of KH560 silane coupling agent, 5 parts of YJ-505 rust inhibitor, 0.3 part of silicone defoamer; Material B is composed of the following components: 13 parts of modified alicyclic amine curing agent, 3 parts of guar gum, 0.2 parts of sodium diacetate, 35 parts of inorganic filler (among them, 10 parts of rapid hardening sulfoaluminate cement, 5 parts of 1250 mesh heavy calcium carbonate, 3 parts of talcum powder, 3 parts of first grade silica fume, 6 parts of first grade fly ash, 8 parts of fine sand with a fineness modulus of 1.6-2.2).

[0025] Dosing according to the above proportioning ratio, put them into a mixer in turn and mi...

Embodiment 2

[0032] A kind of interfacial agent for repairing the corrosion damage part of reinforced concrete structure, it comprises slurry A and slurry B; In terms of parts by weight, said slurry A is composed of the following components: bisphenol A type epoxy 8 parts of resin E51, 3.5 parts of bisphenol F epoxy resin, 1.2 parts of 600 reactive diluent, 1.6 parts of KH560 silane coupling agent, 5.5 parts of YJ-505 rust inhibitor, 0.3 part of organic silicon defoamer; Material B is composed of the following components: 15 parts of modified alicyclic amine curing agent, 3 parts of attapulgite clay, 0.3 parts of sodium diacetate, 41 parts of inorganic filler (including 12 parts of rapid hardening sulfoaluminate cement , 5 parts of 1250 mesh heavy calcium carbonate, 4 parts of talcum powder, 4 parts of first grade silica fume, 6 parts of first grade fly ash, 10 parts of fine sand with a fineness modulus of 1.6-2.2).

[0033] Dosing according to the above proportions, put them into a mixer ...

Embodiment 3

[0039] A kind of interfacial agent for repairing the corrosion damage part of reinforced concrete structure, it comprises slurry A and slurry B; In terms of parts by weight, said slurry A is composed of the following components: bisphenol A type epoxy 7 parts of resin E51, 3 parts of bisphenol F epoxy resin, 1 part of 622 reactive diluent, 1.8 parts of KH560 silane coupling agent, 6 parts of YJ-505 rust inhibitor, 0.4 part of silicone defoamer; Material B is composed of the following components: 12 parts of modified alicyclic amine curing agent, 3 parts of attapulgite clay, 0.3 part of dimethyl fumarate, 40 parts of inorganic filler (among them, rapid hard sulfoaluminate 11 parts of cement, 5 parts of 1250 mesh heavy calcium carbonate, 3 parts of talcum powder, 5 parts of first grade silica fume, 7 parts of first grade fly ash, 9 parts of fine sand with a fineness modulus of 1.6-2.2).

[0040] Dosing according to the above-mentioned proportioning, put into the mixer in sequenc...

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Abstract

The invention provides an interfacial agent for repairing corrosion damage of a reinforced concrete structure. The interfacial agent comprises slurry A and slurry B, wherein the slurry A is composed of the following components in parts by weight: 10-15 parts of epoxy resins, 1-1.5 parts of a diluents, 1.5-3 parts of a silane coupling agent, 5-8 parts of a corrosion inhibitor and 0.3-0.5 part of an antifoaming agent; and the slurry B is composed of the following components: 13-20 parts of a waterborne epoxy curing agent, 3-5 parts of a thickening agent, 0.2-0.3 part of a mildew preventive and 35-48 parts of inorganic fillers. The interfacial agent has high adhesive strength and excellent water resistance, corrosion resistance and reinforced protectiveness, and can achieve the effects of effectively improving the bonding strength of repair materials and matrixes, preventing corrosion of reinforcements and prolonging the service life of structures.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an interface agent for repairing corrosion damaged parts of reinforced concrete structures. Background technique [0002] Due to the durability damage of reinforced concrete structures caused by the corrosion of steel bars, the concrete deterioration of some buildings is serious, and the strength of concrete is significantly reduced, which has become the primary factor affecting the performance of concrete structures. Complete demolition of these structures is unrealistic and current solutions focus on reinforcement and restoration. [0003] When fresh concrete is repaired on old concrete, the interface treatment of the concrete is a key factor in determining the quality of the repair. If it is not handled properly, the following problems often occur at the joint site: new and old concrete cannot be jointly stressed; cracks occur between the temperature sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2111/72C04B24/281C04B24/40C04B24/04C04B14/28C04B14/042C04B18/146C04B18/08C04B14/06
Inventor 刘建飞史思强郭艳坤孔垂云胡功会李少锋薛勇刚
Owner HENAN PROVINCIAL TRANSPORTATION RES INST