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Construction method for repairing reinforced concrete wall

A technology of reinforced concrete and construction method, applied in building maintenance, coating, construction, etc., can solve the problems of difficulty, prone to slurry leakage, high maintenance cost, increase strength and durability, reduce cracks and cracks, solve The effect of stress concentration

Active Publication Date: 2018-11-30
上海常浦建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Reinforced concrete wall is a relatively complex and difficult important node in the process of repairing construction projects. The existing walls using this repairing construction method have poor frost resistance and low quality, and water seepage and leakage often occur. In addition, quality problems such as grout leakage, honeycomb pitting, wrong stubble, and cold seams are prone to occur after freezing and thawing the repaired wall parts, which seriously affect the use function of the building, and the later maintenance costs are high and difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A construction method for repairing reinforced concrete walls,

[0036] First, clean the surface of the damaged wall until there is no debris or water on the surface.

[0037] Coat the surface of exposed steel bars with steel bar rust inhibitor, bake the coated rust inhibitor layer, the baking temperature is controlled at 60°C, and the baking time is 10 minutes.

[0038] Subsequently, the surface of the concrete is damaged by the spraying of the interface binder, and it is left to stand for 6 minutes after spraying evenly. alkane) 5 parts of ethyltrimethoxysilane, 2 parts of polyetheramine,

[0039] Repair and fill the wall defect with the anti-freeze repair material, reserve 1-3cm space between the surface of the anti-freeze repair material and the outer surface of the wall after filling and repair, and naturally maintain for 12 hours after filling and repair.

[0040] Fill the reserved space on the surface with thermal insulation plaster. The weight parts of thermal...

Embodiment 2

[0044] A construction method for repairing reinforced concrete walls,

[0045] First, clean the surface of the damaged wall until there is no debris or water on the surface.

[0046] Coat the surface of exposed steel bars with steel bar rust inhibitor, and bake the coated rust-proof layer at a temperature of 65°C for 15 minutes.

[0047] Subsequently, the interface binder is sprayed to damage the concrete surface, and the spray is uniform and left to stand for 8 minutes. The interface binder is composed of 100 parts by weight of ethyl acrylate, 10 parts of dodecyl alcohol ester, 2-(3,4-epoxycyclohexyl Alkane) 6 parts of ethyltrimethoxysilane, 3 parts of polyetheramine,

[0048] Repair and fill the wall defect with the anti-freeze repair material, reserve 1-3cm space between the surface of the anti-freeze repair material and the outer surface of the wall after filling and repair, and naturally maintain for 15 hours after filling and repair.

[0049] Fill the reserved space on...

Embodiment 3

[0053] A construction method for repairing reinforced concrete walls,

[0054] First, clean the surface of the damaged wall until there is no debris or water on the surface.

[0055] Coat the surface of exposed steel bars with steel bar rust inhibitor, and bake the coated rust inhibitor layer at a temperature of 65°C for 10 minutes.

[0056] Subsequently, the interface binder is sprayed to damage the concrete surface, and it is left to stand for 5 minutes after spraying evenly. The interface binder is composed of 100 parts by weight of ethyl acrylate, 5 parts of dodecyl alcohol ester, 2-(3,4-epoxycyclohexane Alkane) 4 parts of ethyltrimethoxysilane, 3 parts of polyetheramine,

[0057] Repair and fill the wall defect with the antifreeze repair material, reserve a space of 1-3cm between the surface of the antifreeze repair material and the outer surface of the wall after filling and repair, and naturally maintain it for 18 hours after filling and repair.

[0058] Fill the rese...

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Abstract

Provided is a construction method for repairing a reinforced concrete wall. An interface bonding agent is sprayed to a damaged concrete surface, and standing is carried out for 5-8 minutes after evenspraying. The interface bonding agent is composed of, by weight, 100 parts of ethyl acrylate, 5-10 parts of dodecyl alcohol ester, 2-6 parts of 2-(3, 4-cyclohexene oxide) ethyl trimethoxysilane, and 2-4 parts of polyether amine. According to the construction method for repairing the reinforced concrete wall, repairing materials added with antifreeze agents can increase the early temperature of concrete by accelerating the hydration process and heat releasing, the strength and durability of the concrete are improved, cracks and fractures are reduced, the repair materials can be operated at thelow temperature, the hardening can be quickly completed and hydration reaction is sufficient, and damaged concrete parts are effectively filled.

Description

technical field [0001] The invention relates to a construction method for repairing a reinforced concrete wall, and belongs to the technical field of wall construction. Background technique [0002] Reinforced concrete wall is a complex and difficult important node in the repairing construction process of construction projects. The existing walls using this repairing construction method have poor anti-freeze effect and low quality, and water seepage and leakage often occur. In addition, quality problems such as grout leakage, honeycomb pockmarks, wrong stubble, and cold seams are prone to occur after freezing and thawing the repaired wall parts, which seriously affect the use function of the building, and the later maintenance costs are high and difficult. Contents of the invention [0003] In order to solve the problems in the prior art, the present invention provides a reinforced concrete wall repair construction method. [0004] A construction method for repairing rein...

Claims

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Application Information

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IPC IPC(8): E04G23/02C04B28/04C09D4/02C09D4/06C09D7/63
CPCC04B28/04C09D4/06C09D7/63E04G23/02E04G23/0203C04B14/303C04B18/12C04B2103/601C04B18/02C04B14/4656C04B24/18C04B2103/302C04B24/302
Inventor 张滨
Owner 上海常浦建筑工程有限公司
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