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Concrete surface repairing and protecting process

A concrete surface and process technology, which is applied in building maintenance, road subfloor, construction, etc., can solve the problems of limited bonding strength, difficulty, and difficulty in meeting the design requirements of base concrete, and achieve a wide range of market application prospects and scenarios , High use value effect

Pending Publication Date: 2022-03-18
四川恒高新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of pre-shrunk mortar is that the strength is not easy to meet the design requirements, and the bonding strength with the base concrete is limited. After repair, there is the same risk of voiding as high-strength concrete.
Compared with pre-shrunk mortar, polymer repair mortar has greatly improved comprehensive mechanical and deformation properties, but it is still relatively difficult to achieve C60 or higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] When the present invention is implemented, a kind of concrete surface repair and protection technology is proposed, comprising the following steps:

[0036] S1. Comprehensive treatment of various local defects on the concrete surface, including honeycomb defect treatment, pitted surface defect treatment, exposed bar defect treatment, interlayer and gap treatment, mold explosion or mold expansion treatment, missing corner and edge treatment, crack and water leakage treatment ;

[0037] S2. Grooving for expansion joints of concrete structures. The expansion joints of concrete structures are the parts where the coating is easily damaged by eddy currents. Therefore, cut a V-shaped groove with a depth of 2 to 3 cm and a width of 2 to 3 cm along the expansion joints. After cutting, use Clean the bristles of the steel wire brush with clean water, and use it for subsequent brushing and repairing;

[0038] S3. Treatment of the inner corners of the side wall and the bottom plate...

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Abstract

The invention discloses a concrete surface repairing and protecting process. The process comprises the following steps: S1, comprehensively treating various local defects on the surface of concrete; s2, grooving the expansion joint of the concrete structure; s3, internal corner treatment of the side wall and the bottom plate; s4, through bin polishing and flushing are conducted on the repairing face; s5, testing the bonding force of the base surface through an on-site process test; and S6, optimizing the combination compatibility and preparation of process materials. Compared with the prior art, the method has the advantages that the method is successful in concrete surface protection of spillway holes (channels), flood discharge air-raid shelters, reservoir flood discharge hole repair, hydropower station flood discharge holes and the like, is subjected to long-term test, and is close to advanced technologies of new materials and new processes; innovative practical experience is provided for surface protection and repairing of the release structure, sustainable and vigorous popularization and application can be carried out, the wide market application prospect and scene are achieved, and the high use value is achieved.

Description

technical field [0001] The invention relates to the field of civil engineering construction, in particular to a concrete surface repair and protection process. Background technique [0002] Spill tunnels (roads) and spill tunnels (holes) are one of the main structures of hydraulic discharge structures. Due to various factors such as the pulsation and vibration of the water flow, cavitation erosion, abrasion and erosion, and the erosion of the water flow and sand, the concrete of the spillway (channel) and spillway (hole) that undertakes the task of flood discharge is easily damaged during construction and operation. The destruction of the above-mentioned unfavorable operating factors will bring great hidden dangers to the safe operation of drainage structures, which needs special attention. [0003] So far, the application research and practice of concrete repair technology for hydraulic drainage structures basically fall into the following three categories: [0004] 1) Hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F5/00E04G23/02
CPCE01F5/005E04G23/0203E04G23/0296
Inventor 董国义刘志强郎知音
Owner 四川恒高新型建材有限公司
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