Processing method of concrete holes or exposed bars

A treatment method, concrete technology, applied in construction, building maintenance, building construction, etc., can solve the problems of reducing the bond strength between materials, affecting the durability of the structure, and long construction period, so as to improve construction performance and workability , The effect of low drying shrinkage

Inactive Publication Date: 2018-12-07
GUIZHOU PHOSPHORUS MAGNESIUM MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the prior art also has the following problems: 1. The repair cost is high; 2. The construction period is long; before the repair concrete is poured, the joint surface of the old and new concrete needs to be cured with wet water for 72 hours, and after the concrete is poured, it needs to be moisturized for more than 5 days; 3. , The integrity is not good, which affects the durability of the structure; although the interface is treated with cement slurry before pouring new concrete, there is still a formwork process in the follow-up, which is time-consuming and will cause damage to the treated interface. Damage, reducing the bond strength between materials

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  • Processing method of concrete holes or exposed bars

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Experimental program
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Effect test

Embodiment 1

[0030] This embodiment provides a treatment method for concrete holes or exposed bars, the steps comprising:

[0031] S1 Chisel removal of unqualified concrete: Chisel away uncompacted loose concrete and floating stones, check that the surface of the concrete after chiseling is dense and there are no obvious gaps;

[0032] S2 interface cleaning: use high-pressure air to clean the residue in the tank and rinse it with high-pressure water;

[0033] S3 mold support: choose plastic formwork for mold support;

[0034] S4 Stirring: Pour the concrete repair material into the mixing container, add water until the diffusion degree is 450-600mm, and stir evenly;

[0035] S5 pouring of concrete repair material: pouring the concrete repair material obtained in step S4, and vibrating and compacting;

[0036] S6 maintenance: After initial setting, cover with plastic film for moisturizing and curing for 3 hours;

[0037] S7 formwork removal: remove the formwork after maintenance;

[0038...

Embodiment 2

[0044] This embodiment provides a treatment method for concrete holes or exposed bars, the steps comprising:

[0045] S1 Chisel removal of unqualified concrete: Chisel away uncompacted loose concrete and floating stones, check that the surface of the concrete after chiseling is dense and there are no obvious gaps;

[0046]S2 interface cleaning: use high-pressure air to clean the residue in the tank and rinse it with high-pressure water;

[0047] S3 mold support: choose plastic formwork for mold support;

[0048] S4 Stirring: Pour the concrete repair material into the mixing container, add water until the diffusion degree is 450mm, and stir evenly;

[0049] S5 pouring of concrete repair material: pouring the concrete repair material obtained in step S4, and vibrating and compacting;

[0050] S6 maintenance: After initial setting, cover with plastic film for moisturizing and curing for 3 hours;

[0051] S7 formwork removal: remove the formwork after maintenance;

[0052] S8 ...

Embodiment 3

[0058] This embodiment provides a treatment method for concrete holes or exposed bars, the steps comprising:

[0059] S1 Chisel removal of unqualified concrete: Chisel away uncompacted loose concrete and floating stones, check that the surface of the concrete after chiseling is dense and there are no obvious gaps;

[0060] S2 interface cleaning: use high-pressure air to clean the residue in the tank and rinse it with high-pressure water;

[0061] S3 mold support: choose plastic formwork for mold support;

[0062] S4 Stirring: Pour the concrete repair material into the mixing container, add water until the diffusion degree is 500mm, and stir evenly;

[0063] S5 pouring of concrete repair material: pouring the concrete repair material obtained in step S4, and vibrating and compacting;

[0064] S6 maintenance: After initial setting, cover with plastic film for moisturizing and curing for 3 hours;

[0065] S7 formwork removal: remove the formwork after maintenance;

[0066] S8...

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Abstract

The invention relates to the technical field of concrete, and particularly relates to a processing method of concrete holes or exposed bars. The method comprises the following steps: chipping away unqualified concrete; cleaning a surface; erecting a template; stirring; pouring; performing conservation; dismantling the template; and putting into use. The method disclosed by the invention has the characteristics of convenience in operation, low cost, short construction working periods and good construction effect. Processing is carried out by adopting the method, so that the concrete applied toa restoration part has the characteristics that (1) a dry shrinkage ratio is low, even the concrete is expanded a little, and the phenomena of shrinkage and cracking are avoided, so that the durability of a concrete structure is ensured; (2) the condensation time is short, the early compressive strength is high, and the concrete structure is in a service state in time; and (3) the folding strengthand the bonding strength are high, and the adaptability of an environment of concrete components is improved.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a treatment method for concrete holes or exposed bars. Background technique [0002] Pores refer to cavities on the surface and inside of structural members, local lack of concrete or excessive honeycomb defects. A common hole in general engineering refers to a defect that exceeds the thickness of the protective layer of the steel bar but does not exceed one-third of the cross-sectional size of the component. Exposed bars refer to the defects that the main bars, vertical bars, distribution bars, stirrups, etc. inside the reinforced concrete structure are not wrapped by concrete and exposed. The existence of holes and exposed bars will greatly reduce the appearance quality of the concrete structure, reduce the durability of the concrete structure, and reduce the bearing capacity of the concrete structure. [0003] In the prior art, patent No. CN201410298955.X discloses a concre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34E04G23/02C04B111/72
CPCC04B28/34C04B2111/72E04G23/02C04B22/16C04B14/304C04B22/0013C04B18/08C04B14/00C04B14/106C04B14/06
Inventor 尤超刘敏邓玲夕安光文王敏李猛刘俊才
Owner GUIZHOU PHOSPHORUS MAGNESIUM MATERIAL CO LTD
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