Reinforced concrete permeable spur dike repairing and reinforcing structure

Abstract

The utility model provides a reinforced concrete permeable spur dike repairing and reinforcing structure which comprises a concrete base face, bottom layer acrylic emulsion neat paste is brushed on the concrete base face, gridding cloth is laid on the acrylic emulsion neat paste, acrylic emulsion mortar is filled on the gridding cloth, and the acrylic emulsion mortar is coated on the bottom layer acrylic emulsion neat paste. The acrylic emulsion mortar is filled and repaired to design structural surfaces of all components of the reinforced concrete permeable spur dike; corner beads are laid at four corners of a reinforced concrete spur dike curtain plate or a cross beam component, and acrylic emulsion mortar is brushed on the surfaces of the corner beads. The reinforcing structure has universality, can effectively solve the problems of surface concrete loosening, falling and the like caused by years of application of a concrete member, and adopts the anti-crack glass fiber gridding cloth and the PVC internal and external corner protection strips, so that the strength and durability of the reinforcing structure are ensured.

Description

Technical Field

[0001] This utility model relates to the field of repair and reinforcement technology for concrete structures in water conservancy projects, and in particular to a reinforced concrete permeable groynes for repairing and reinforcing dangerous sections of dikes. Background Technology

[0002] In hydraulic engineering, reinforced concrete permeable groynes typically consist of curtain panels, crossbeams (including bottom beams, middle beams, and top beams), and columns, all of which are cast-in-place reinforced concrete structures. The columns are generally 4m–6m high and 0.6m in diameter; the crossbeams are 0.3m wide, 0.3m thick, and 2.8m long; the curtain panels are 0.2m wide, 0.1m thick, and 2.4m high. The parallel clearance between adjacent curtain panels is 15cm. Every seven curtain panels form a group, separated by crossbeams or columns. Each curtain panel is inserted into the crossbeams (bottom / middle / top beams) at both ends, and each crossbeam is inserted into two adjacent columns, thus forming a reinforced concrete permeable groyne.

[0003] After years of use, reinforced concrete permeable groynes often suffer from concrete loosening, spalling, and even exposed reinforcement due to flood erosion and concrete carbonation. This affects their structural safety and appearance integrity. In the event of a flood, the safety and stability of the reinforced concrete permeable groynes themselves will be seriously threatened.

[0004] Common methods for repairing and reinforcing concrete components include: ① Surface treatment: Removing loose concrete and cleaning the base surface to ensure cleanliness and enhance adhesion. ② Local repair: Repairing localized damage with cement mortar. ③ Reinforcement measures: Encasing the original concrete structure with a new layer of concrete to increase the cross-sectional dimensions and improve overall performance. However, for reinforced concrete permeable groynes, especially thin and slender concrete components such as curtain panels and beams, encasing them with concrete to increase the cross-section will alter the original structural dimensions, affecting the water-carrying capacity of the permeable groyne. Furthermore, the limited space between adjacent curtain panels makes formwork and grouting extremely difficult during repair.

[0005] Chinese patent CN1 11217569A discloses a repair mortar and a method for repairing damaged parts of a concrete structure. The repair mortar comprises the following components in the indicated mass ratios: 12.5 parts repair agent, 87.5 parts sand, 50 parts cement, 37.5 parts white cement, and 28 parts water. The method specifically includes the following steps: removing loose concrete from the damaged area; cleaning the damaged surface of the concrete structure; applying an interface agent to the cleaned damaged surface; preparing the repair mortar; filling the damaged area of ​​the concrete structure with the repair mortar; and installing formwork for reinforcement. The concrete structure and the repair mortar are tightly bonded, and their surfaces are of the same color. This invention ensures both the aesthetics and durability of the concrete structure while improving construction efficiency and reducing construction costs. However, this method involves encasing the concrete to increase the cross-section, which alters the original structural dimensions, affects the water permeability of the reinforced concrete, and results in a narrow space between adjacent panels, making formwork and grouting extremely difficult during the repair process.

[0006] Therefore, how to solve the problems of surface concrete loosening and falling off of various components of reinforced concrete permeable groynes caused by years of use, repair and reinforce them and restore their original structure so that they can continue to perform their due functions has become an urgent problem to be solved. Utility Model Content

[0007] The technical problem to be solved by this utility model is to repair and reinforce the damaged parts of the surface of each component of the reinforced concrete permeable groyne with concrete without demolition and reconstruction, so as to restore the original structural dimensions of the permeable groyne and enable it to continue to play its role in controlling water flow, slowing down flow velocity and protecting the embankment.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] A reinforced concrete permeable groyne repair and reinforcement structure includes a concrete base surface, on which a base layer of acrylic emulsion is applied, a mesh fabric is laid on the acrylic emulsion, and acrylic emulsion mortar is filled on the mesh fabric. The acrylic emulsion mortar fills and repairs to the designed structural surface of each component of the reinforced concrete permeable groyne. Corner guards are laid at the four corners of the structural surface of the curtain panel or beam component of the reinforced concrete permeable groyne, and the surface of the corner guards is brushed with acrylic emulsion mortar.

[0010] The process of cleaning or removing loose concrete layers from the concrete surface is generally 2cm to 5cm. After that, the surface is rinsed with high-pressure water until it is a fresh and hard concrete base. After the base is dried, acrylic emulsion is applied to the concrete base to ensure that the acrylic emulsion adheres well to the concrete base.

[0011] The acrylic emulsion mortar is used to fill and repair the concrete surface of each component of the reinforced concrete permeable groyne, with a thickness of 2-5 cm. It is used to repair and reinforce the concrete surface of the removed areas, restoring them to their original structural dimensions. The acrylic emulsion mortar has high bonding strength, excellent impermeability, chemical corrosion resistance, weather resistance, convenient construction, environmental friendliness, and high wear resistance, making it a major reinforcing material for concrete components.

[0012] Preferably, the acrylic emulsion grout is applied to completely fill or cover the exposed concrete substrate. The acrylic emulsion grout is an original liquid, applied to the cleaned concrete substrate in 1 to 3 coats.

[0013] Preferably, the mesh fabric is a crack-resistant glass fiber mesh fabric. This crack-resistant glass fiber mesh fabric has high strength, good toughness, strong crack resistance, and is not prone to aging or corrosion. When laid between the underlying acrylic emulsion mortar and the surface acrylic emulsion mortar, it effectively prevents the acrylic emulsion mortar and mortar from cracking and falling off later, enhancing the adhesion and integrity of the new and old concrete. The laying area is the surface of the acrylic emulsion mortar, and 1 to 2 layers are laid.

[0014] Preferably, the acrylic emulsion mortar is used to fill and repair the reinforced concrete component's designed structural surface. After the corner guards are laid at the four corners of the structural surface, another layer of acrylic emulsion mortar is applied to each structural surface to completely cover the corner guards and level the structural surface.

[0015] Preferably, the corner protector is a PVC corner protector. The corner protector, made of PVC, is laid at the corners of each concrete component to provide support, ensuring that the acrylic emulsion mortar forms a dense, non-collapsed structure at the exposed corners of the component, and also providing a reference for grinding and leveling the concrete surface.

[0016] The PVC corner protectors are easy to install, protect edges and corners from damage, provide strong support for edge and corner shaping, are highly impact-resistant and corrosion-resistant, improve construction efficiency, and shorten the construction cycle. When laid at the corners of concrete structural surfaces, they facilitate the grinding and leveling of the acrylic mortar surface and support the formation of a complete sealing layer for the anti-carbonation coating on the concrete surface.

[0017] Preferably, the outer surface of the reinforced concrete permeable groyne is coated with an anti-carbonation coating layer, and the anti-carbonation coating layer is not less than 3 layers.

[0018] Preferably, the anti-carbonization coating layer is a thick-film epoxy resin coating, applied in no less than 3 layers, with each layer having a thickness of no less than 2 mm.

[0019] The thick-film epoxy resin is used to prevent corrosion or carbonation of the concrete surface, ensuring the durability of the repaired concrete structure. The anti-carbonation coating reduces the number of construction steps and has high compressive, tensile, and impact strength. It also has strong adhesion to various substrates and is easy to apply. Its application range is the entire surface of the reinforced concrete permeable spur dike. It is generally applied in three layers, with each layer being at least 2 mm thick, to achieve anti-corrosion, anti-carbonation, and anti-cracking properties on the surface of the reinforced concrete permeable spur dike, thereby improving the overall strength and durability of the reinforced concrete permeable spur dike.

[0020] The construction process of this utility model is as follows:

[0021] A construction process for repairing and reinforcing a reinforced concrete permeable groyne involves first removing loose concrete from the surface of the groyne, then washing it with high-pressure water to a fresh and firm concrete base. The repair and reinforcement process then proceeds in the following steps: S1. Apply a base coat of acrylic emulsion mortar to the clean concrete base; S2. Lay a crack-resistant fiberglass mesh over the acrylic emulsion mortar; S3. Fill the mesh with acrylic emulsion mortar to repair the structural surfaces of each component; S4. Install PVC corner protectors at the four corners of the curtain panel or beam; S5. Apply an acrylic emulsion mortar leveling layer to the corner protectors and grind the repaired component surface until it is smooth and well-shaped; S6. Apply three coats of thick-film epoxy resin to the surface of the reinforced concrete groyne to improve its corrosion resistance, carbonation resistance, and durability.

[0022] The beneficial effects of this utility model are:

[0023] This utility model comprehensively utilizes crack-resistant fiberglass mesh and corner protectors to repair and reinforce damaged parts and components of reinforced concrete permeable groynes. This not only avoids the demolition and reconstruction of the components of the reinforced concrete permeable groynes, but also simplifies the construction process, shortens the construction period, saves repair costs, and ensures that the reinforced concrete permeable groynes continue to perform their intended function while maintaining the integrity of the design structure.

[0024] This utility model has a versatile structure that can effectively solve problems such as surface concrete loosening and falling off caused by years of use in concrete components. At the same time, it uses crack-resistant fiberglass mesh and PVC corner protectors to ensure the strength and durability of the reinforcement structure. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a reinforced concrete permeable groyne repair and reinforcement structure according to the present invention.

[0026] Figure 2 This is a cross-sectional view of side II of this utility model.

[0027] In the attached diagram, 1-concrete base, 2-acrylic emulsion mortar, 3-mesh fabric, 4-acrylic emulsion mortar, 5-structural surface, 6-corner guard strip, 7-anti-carbonation coating layer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] like Figure 1 and Figure 2 As shown, a reinforced concrete permeable spur dike repair and reinforcement structure includes a concrete base surface 1. A base coat of acrylic emulsion slurry 2 is applied to the concrete base surface 1, ensuring the slurry completely fills or covers any exposed areas of the concrete base surface 1. One to three coats of acrylic emulsion slurry 2 are applied. A mesh fabric 3, which is a crack-resistant fiberglass mesh fabric, is laid on the acrylic emulsion slurry 2, with one to two layers applied. Acrylic emulsion mortar 4 is filled onto the mesh fabric 3, repairing and filling up to the designed structural surface 5 of each component of the reinforced concrete permeable spur dike. Corner guards 6, which are PVC corner guards, are laid at the four corners of the curtain panels or beams of the reinforced concrete spur dike, and acrylic emulsion mortar 4 is applied to the surface of the corner guards 6. An anti-carbonation coating layer 7, which is a thick-film epoxy resin coating, is applied in at least three layers, each layer being at least 2 mm thick.

[0030] During construction, the loose concrete on the surface of the reinforced concrete groyne was first removed, and then the surface was washed with high-pressure water until a fresh and firm concrete base surface was reached. Repair and reinforcement were then carried out in the following steps:

[0031] S1. Apply a base coat of acrylic emulsion mortar 2 to the concrete substrate 1;

[0032] S2. Lay a mesh cloth 3 on the acrylic emulsion 2;

[0033] S3. Fill the mesh fabric 3 with acrylic emulsion mortar 4 to repair to the design structural surface 5 of each component of the reinforced concrete permeable groyne;

[0034] S4. Install PVC corner protectors at the four corners of reinforced concrete groyne curtain panels or beam components.

[0035] S5. Apply acrylic emulsion 4 to the surface of corner protector 6, cover corner protector 6 with acrylic emulsion 4 and grind it smooth.

[0036] S6. After the acrylic emulsion mortar 4 has been cured, apply an anti-carbonation coating layer 7 to the outer surface of the reinforced concrete permeable groyne to improve its corrosion resistance and durability, making the reinforced concrete permeable groyne have a smooth and uniform appearance, and making it look like new.

[0037] In this embodiment, crack-resistant fiberglass mesh 3 and corner protectors 6 are used simultaneously to repair and reinforce various components of a reinforced concrete permeable groyne, ensuring that they are repaired and reinforced according to the original design dimensions. This avoids demolition and reconstruction while improving the strength and durability of the concrete, saving investment, simplifying the process, and shortening the construction period. It provides a reference for the repair and reinforcement of thin-walled or slender concrete components.

[0038] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They are not intended to limit the scope of this utility model. Equivalent changes and modifications made without departing from the concept and principles of this utility model still fall within the scope of this utility model patent.

Claims

1. A reinforced concrete permeable groyne repair and reinforcement structure, characterized in that, The concrete base surface (1) is coated with a base layer of acrylic emulsion slurry (2), a mesh cloth (3) is laid on the acrylic emulsion slurry (2), acrylic emulsion mortar (4) is filled on the mesh cloth (3), the acrylic emulsion mortar (4) is filled and repaired to the design structural surface (5) of each component of the reinforced concrete permeable groyne, corner guards (6) are laid at the four corners of the structural surface (5) of the reinforced concrete groyne curtain or beam component, and the surface of the corner guards (6) is brushed with acrylic emulsion mortar (4).

2. The reinforced concrete permeable groyne repair and reinforcement structure according to claim 1, characterized in that, The acrylic emulsion mortar (2) is applied to completely fill or cover the exposed concrete base surface (1), and 1 to 3 layers of acrylic emulsion mortar (2) are applied.

3. The reinforced concrete permeable groyne repair and reinforcement structure according to claim 1, characterized in that, The mesh fabric (3) is a crack-resistant glass fiber mesh fabric, and 1 to 2 layers are laid.

4. The reinforced concrete permeable groyne repair and reinforcement structure according to claim 1, characterized in that, The acrylic emulsion mortar (4) is used to fill and repair the reinforced concrete component's designed structural surface (5). After the corner guards (6) are laid at the four corners of the structural surface (5), another layer of acrylic emulsion mortar (4) is brushed on the surface of each structural surface (5) to completely cover the corner guards (6) and level the structural surface (5).

5. The reinforced concrete permeable groyne repair and reinforcement structure according to claim 1, characterized in that, The corner protector (6) is a PVC yin-yang corner protector.

6. The reinforced concrete permeable groyne repair and reinforcement structure according to claim 1, characterized in that, The outer surface of the reinforced concrete permeable groynes is coated with an anti-carbonation coating layer (7).

7. The reinforced concrete permeable groyne repair and reinforcement structure according to claim 6, characterized in that, The anti-carbonization coating layer (7) is a thick-film epoxy resin coating, with no less than 3 layers applied, and each layer having a thickness of no less than 2 mm.

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