T-shaped rubber composite material for expansion joint protection

Abstract

A T-shaped rubber composite material for expansion joint protection comprises T-shaped rubber matched with an expansion joint in size, ceramic particles are arranged on the top face of the rubber in an embedded mode, gridding cloth and epoxy structural adhesive are sequentially arranged on the bottom face of a wing plate of the rubber, a hollow structure is arranged in the middle of the rubber, and the middle of the hollow structure is connected with the ceramic particles. And a barb structure is arranged outside the T-shaped protruding part of the rubber. According to the utility model, the rubber plate is adhered to the surface of the expansion joint through the barb structure arranged on the T-shaped rubber and the epoxy structural adhesive coated on the T-shaped rubber wing plate, so that the falling phenomenon can be reduced or avoided under the harsh working conditions of high-speed water flow, bed load impact and the like; according to the rubber composite material disclosed by the invention, the surface of the rubber composite material has high anti-scouring and anti-impact performance and excellent energy dissipation and buffering effects in a manner that unvulcanized rubber extrudes ceramic particles to be formed and then is subjected to hot vulcanization, so that the rubber composite material has the anti-scouring and anti-abrasion performance equivalent to the performance of a runner anti-scouring and anti-abrasion coating when being used as an expansion joint backfilling material, and is not easy to damage at the part.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy construction technical field especially a T type rubber composite material for expansion joint protection. BACKGROUND

[0002] The flow channel abrasion and erosion damage of hydraulic structures is one of the main factors threatening the operation safety of hydraulic structures. In recent years, high-strength repair materials such as epoxy mortar, high-performance anti-erosion concrete and polymer mortar have been used to better protect the surface of the water discharge structure and improve the operation safety of the structure.

[0003] However, through long-term operation, it is found that the anti-erosion coating such as epoxy mortar often starts to break at the expansion joint part. The main reason is that the expansion joint part is usually backfilled with elastic sealant (such as polyurethane sealant and polysulfide sealant), the backfilling material does not have excellent adhesion and anti-erosion performance, and is prone to aging and falling off in long-term water immersion. Under the condition of high-speed water flow scouring, it is easy to form cavitation damage, which may cause the whole anti-erosion layer to fall off, reduce the service life of the coating and affect the safe operation of the hydraulic structure.

[0004] Currently, the industry mainly focuses on the research of high-performance anti-erosion coating to solve the erosion damage of the flow channel concrete caused by high-speed water flow and suspended load scouring and bed load medium. There is little research on the anti-erosion of backfilling materials at the expansion joint part. The application of rubber material at the expansion joint part is mainly the application of rubber waterstop in the waterproof field of expansion joint, and there is no application case or report of using rubber composite material for anti-erosion protection of the flow channel of hydraulic structures. Therefore, how to make a T-shaped rubber composite material for expansion joint protection to solve the problems in the prior art has become a technical problem to be solved. CONTENT OF THE UTILITY MODEL

[0005] The utility model is just based on the above technical problem, and a T-shaped rubber composite material for expansion joint protection is provided to solve the problems in the background art.

[0006] Therefore, the utility model provides a T-shaped rubber composite material for expansion joint protection, which comprises a T-shaped rubber matched with the size of the expansion joint, ceramic particles embedded on the top surface of the rubber, a mesh cloth and an epoxy structural adhesive sequentially arranged on the bottom surface of the wing plate of the rubber, a hollow structure arranged in the middle of the rubber, and a barb structure arranged outside the T-shaped protruding part of the rubber.

[0007] Further, a plurality of groups of ceramic particles are sequentially and spacedly arranged on the top surface of the rubber, and the upper surfaces of the ceramic particles are flush with the upper surface of the rubber.

[0008] Further, the ceramic particles are one of alumina ceramic, silicon carbide ceramic and zirconia ceramic.

[0009] Further, the ceramic particles are one of alumina ceramic, silicon carbide ceramic and zirconia ceramic.

[0010] Further, the ceramic particles are one of quadrilateral, hexagon and triangle.

[0011] Further, the mesh cloth is one of glass fiber mesh cloth, carbon fiber mesh cloth and polyester non-woven fabric.

[0012] Further, the mesh cloth is one of glass fiber mesh cloth, carbon fiber mesh cloth and polyester non-woven fabric.

[0013] Further, the epoxy structural adhesive is two-component reaction type structural adhesive or single-component ultraviolet curing epoxy structural adhesive.

[0014] Further, the hollow structure is continuous hollow structure or multiple hollow discontinuous structures.

[0015] Further, the rubber is ethylene-propylene-diene rubber.

[0016] The utility model provides a T type rubber composite material for expansion joint protection, compared with the prior art, the utility model discloses an epoxy structural adhesive and barb shaped rubber structure are fixed on the surface of flow channel concrete expansion joint, and are used to carry out anti-erosion protection to the expansion joint part of hydraulic flow channel structure, and the utility model has the advantages that:

[0017] 1, the barb structure of T type rubber and the epoxy structural adhesive that is daubed on the wing plate of T type rubber are arranged, and the rubber plate is bonded on the surface of expansion joint, which can reduce or avoid the falling phenomenon under the condition of high-speed water flow and push moving material impact.

[0018] 2, by the mode that the ceramic particles are formed after extruding the unvulcanized rubber and heat vulcanization, the rubber composite material surface has high anti-washing and impact resistance, and has excellent energy dissipation and buffering effect, and the expansion joint backfill material has the anti-erosion performance equivalent to the flow channel anti-erosion coating performance, and is not easy to be damaged in the part.

[0019] 3, the hollow structure arranged in the T type rubber makes the expansion joint not easy to be extruded or depressed in deformation. SHEET DESCRIPTION

[0020] Figure 1 The overall structure schematic diagram of the utility model is shown.

[0021] Figure 2The use state schematic view of the utility model is shown.

[0022] In the drawing: 1 rubber, 2 mesh cloth, 3 hollow structure, 4 barb structure, 5 epoxy structural adhesive, 6 ceramic particles, 7 expansion joint. DETAILED DESCRIPTION

[0023] In order to enable the above-mentioned purpose, features and advantages of the utility model to be more clearly understood, the utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0024] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the utility model, however, the utility model can also be implemented in other manners different from those described herein, therefore, the protection scope of the utility model is not limited by the following disclosure.

[0025] The following is combined Figure 1 And Figure 2 The technical scheme of the utility model is further described.

[0026] The first embodiment, as shown in Figure 1 And Figure 2 : a T-shaped rubber composite material for expansion joint protection, comprising: a T-shaped rubber 1 matched with the size of the expansion joint 7, the top surface of the rubber 1 is embedded with ceramic particles 6, the bottom surface of the wing plate of the rubber 1 is sequentially provided with mesh cloth 2 and epoxy structural adhesive 5, the middle part of the rubber 1 is provided with hollow structure 3, and the T-shaped protruding part of the rubber 1 is provided with barb structure 4.

[0027] The top surface of the rubber 1 is sequentially and spacedly provided with a plurality of groups of ceramic particles 6, and the upper surface of the ceramic particles 6 is flush with the upper surface of the rubber 1.

[0028] The size of the ceramic particles 6 is 20*20*4mm, and a plurality of groups of ceramic particles 6 are spacedly arranged on the top surface of the rubber 1 by 1 to 3mm.

[0029] The ceramic particles 6 are one of alumina ceramic, silicon carbide ceramic and zirconia ceramic.

[0030] The shape of the ceramic particles 6 is one of quadrilateral, hexagon and triangle.

[0031] The mesh cloth 2 is one of glass fiber mesh cloth 2, carbon fiber mesh cloth 2 and polyester non-woven fabric.

[0032] The specification of the mesh cloth 2 is more than 200g / m2, and the thickness is about 1mm.

[0033] The epoxy structural adhesive 5 is a two-component reaction type structural adhesive or a single-component ultraviolet curing epoxy structural adhesive 5.

[0034] The hollow structure 3 is a continuous hollow structure or a plurality of hollow discontinuous structures.

[0035] The rubber 1 is a ternary ethylene-propylene rubber.

[0036] Construction process: the rubber 1 with large expansion and deformation capacity, the anti-impact and wear-resistant ceramic particles 6 are embedded on the surface of the rubber 1 by vulcanization, the grid cloth 2 is arranged at the bottom of the wing plate rubber 1 to improve the adhesion, the surface of the grid cloth 2 is coated with the epoxy structural adhesive 5, and the T-shaped composite structure rubber 1 has the hollow structure 3 to facilitate the deformation of the expansion joint 7, and the T-shaped composite rubber 1 has the barb-shaped structure to facilitate the dense adhesion of the expansion joint 7.

[0037] In the embodiment, the wear-resistant ceramic material has a size of 20*20*4mm, is embedded in the rubber 1 by hot vulcanization extrusion at an interval of 1 to 3mm, is exposed on the surface of the rubber 1, and is flush with the surface of the rubber 1. The T-shaped rubber 1 composite structure grid cloth 2 is combined with the rubber 1 by hot extrusion, is partially exposed on the outer surface of the wing plate, and has a thickness of about 1mm. The surface of the grid cloth 2 is coated with the epoxy structural adhesive 5 which is beneficial to the adhesion of the rubber 1 wing plate and the concrete, the T-shaped composite structure rubber 1 has the hollow structure 3 to facilitate the deformation of the expansion joint 7 without causing the deformation protrusion or depression of the expansion joint 7. The T-shaped composite rubber 1 has the barb-shaped structure which is consistent with the size of the expansion joint 7 and is not easy to fall off under water flow.

[0038] The wear-resistant ceramic particles 6 are embedded in the ternary ethylene-propylene rubber 1 by hot vulcanization extrusion at an interval of 2mm, the ceramic particles 6 have a size of a cube, 20mm (length) x 20mm (width) x 10mm (width), the depth into the rubber 1 is 10mm, the thickness of the rubber 1 is 20mm, the wear-resistant ceramic particles 6 are exposed on the surface of the rubber 1, and the surface is flush with the rubber 1.

[0039] The glass fiber grid cloth 2 with a specification of 200g / m 2 The glass fiber grid cloth 2 with a specification of 200g / m

[0040] The T-shaped rubber 1 composite material is provided with two elliptical hollow structures 3 inside, which are beneficial to the deformation of the expansion joint 7 without obvious deformation of the exposed surface of the composite structure. The T-shaped rubber 1 composite material is provided with the barb structure 4 to increase the friction between the rubber 1 and the concrete and not easy to fall off.

[0041] The surface of the concrete expansion joint 7 is grooved, the groove size is 40*20, the expansion joint 7 is located at the middle part of the groove, and the expansion joint 7 is expanded, the depth is 2 cm, and the width is 2 cm. The groove is coated with epoxy structural adhesive 5, and the thickness is 2 mm. The above composite structure is installed in the groove by knocking with a rubber hammer.

[0042] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A T-shaped rubber composite material for expansion joint protection, characterized by: It includes a T-shaped rubber that is adapted to the size of the expansion joint. The top surface of the rubber is embedded with ceramic particles. The bottom surface of the wing plate of the rubber is sequentially provided with mesh cloth and epoxy structural adhesive. The middle part of the rubber is provided with a hollow structure. The T-shaped protrusion of the rubber is provided with a barb structure.

2. The T-shaped rubber composite material for expansion joint protection according to claim 1, characterized in that: A plurality of groups of ceramic particles are sequentially and spaced apart on the top surface of the rubber, and the upper surfaces of the ceramic particles are flush with the upper surface of the rubber.

3. The T-shaped rubber composite material for expansion joint protection according to claim 2, characterized in that: The size of the ceramic particles is 20*20*4mm, and multiple groups of the ceramic particles are arranged on the top surface of the rubber with an interval of 1 to 3mm.

4. The T-shaped rubber composite material for expansion joint protection according to claim 3, characterized in that: The ceramic particles are one of alumina ceramics, silicon carbide ceramics and zirconium oxide ceramics.

5. The T-shaped rubber composite material for expansion joint protection according to claim 4, characterized in that: The shape of the ceramic particles is one of a quadrilateral, a hexagon and a triangle.

6. The T-shaped rubber composite material for expansion joint protection according to claim 5, characterized in that: The mesh cloth is one of glass fiber mesh cloth, carbon fiber mesh cloth and polyester non-woven fabric.

7. The T-shaped rubber composite material for expansion joint protection according to claim 6, characterized in that: The mesh cloth has a specification of more than 200g / m2 and a thickness of about 1mm.

8. The T-shaped rubber composite material for expansion joint protection according to claim 7, characterized in that: The epoxy structural adhesive is a two-component reactive structural adhesive or a single-component UV-curing epoxy structural adhesive.

9. The T-shaped rubber composite material for expansion joint protection according to claim 8, characterized in that: The hollow structure is a continuous hollow structure or a plurality of hollow discontinuous structures.

10. The T-shaped rubber composite material for expansion joint protection according to claim 9, characterized in that: The rubber is EPDM rubber.

Images