KR200226637Y1 - Structure for surface protection layer of concrete construction - Google Patents

Abstract

The present invention is to prevent the neutralization of the structure by the damaged parts generated on the surface of the concrete structure in order to continuously maintain the initial state of the various concrete structures, and the protection layer structure, which is made of concrete roads, bridges, buildings, sewer pipes, offshore structures Even after the construction of the structure is completed, cracks occur due to corrosion due to chemical substances or salts, impact or vibration of the vehicle, and the glass fiber is bonded and protective coating material is applied to prevent steel corrosion and damage caused by the crack. While protecting the structure, lining concrete protection by chemicals such as smoke in the air inside the tunnel constructed of concrete, protection from harmful substances generated in sewage structures, etc. Surface damage of all concrete structures including The complement, is designed for the protection layer to protect the structure.

Description

Structure for surface protection layer of concrete construction

The present invention is a design for the repair structure for the surface protection of concrete roads, bridges, sewer networks, or concrete structures on the coast or offshore, and the various structures made of concrete have various corrosion phenomena according to their structural characteristics. In case of sudden damage to the surface of concrete structures or roads, bridges, or tunnels caused by various harmful toxic substances or salts, initial partial damage or cracking occurs due to vibration and impact from continuous vehicle operation, and the corrosion of reinforcing steel embedded in concrete gradually. Safety problems of the structure according to the weakening of the structure is generated, and in the prior art has been to protect the structure by emulsion coating (aqueous) coating or cement mortar when such a phenomenon occurs.

As described above, due to the chemical adverse effect applied to the concrete structure from the outside, deterioration (neutralization) is caused by the toxic substance penetrated by the pores, micro cracks, etc. As a result, the rebar was prematurely corroded, causing the risk of physically weakening the structural strength of the structure, or even shortening the life of the structure due to the dropping of concrete on the surface.

1 is a cross-sectional view showing a damaged state of the concrete surface

Figure 2 is an enlarged cross-sectional view of the surface protective layer structure of the concrete structure implemented in accordance with the present invention

<Code Description of Main Parts of Drawing>

1. Concrete structure 2. Damaged part

3. putty or mortar 4. primer

5. FRP woven fabric 6. Primary coating layer

7. Second coating layer

The present invention is designed to prevent further damage to the structure and to prevent it from detaching by repairing the initial phenomenon such as partial detachment breakage or cracking on the surface of various concrete structures as described above. When described in detail based on the drawings as follows.

When the damaged part 2 occurs on the surface of various concrete structures 1, first, the uneven surface of the damaged part 2 is ground, and the damaged part is smoothed with an arc surface, and then putty is formed in the void of the damaged part 2. ; Sol-filled epoxy or cement mortar, epoxy mortar) (3) equally wide on the surface of the structure (1) and markedly wide so that it is almost the same as the top of the putty (3) and the entire surface of the concrete structure (1); A primer (gel epoxy) (4) is applied to the surface to serve as an adhesive, and then the FRP woven paper made of fiber reinforced plastics (FRP) on the top of the primer (4). (5) is bonded to the same area as the primer (4), and the primary coating layer (6) is formed by first applying a gel epoxy on the upper surface of the FRP woven fabric (5). ) Epoxy liquid to be bonded to the same thickness and width of the woven fabric (5) It is sufficiently penetrated into the FRP woven fabric and coated to form a coating film inside the FRP woven fabric, dried for about 16 hours, and then again applied with an epoxy solution at a constant thickness to form a second coating layer 7. The surface protective layer structure of the concrete structure to be implemented is configured and the protective film is formed so that the repair site is not detached.

The present invention configured as described above, the FRP impregnated with a special resin and impregnated to form a thick protective layer to prevent the occurrence of internal cracks of the structure itself, as well as to protect from harmful chemicals and salts to extend the durability life of concrete, laminated laminated The bonded state of the tissue is not only dense and exfoliated, but also the replenishment repair site is not detached and the surface coating film is maintained for a long time.

Claims (1)

In repairing the damaged portion 2 generated on the surfaces of the various concrete structures 1, the putty 3 is filled in the voids of the damaged portion 2 in the same manner as the surface of the structure 1, and the upper surface of the putty 3 is A primer (4) is applied to almost the entire surface of the concrete structure (1) with a larger area than the putty or mortar (3) to bond the FRP woven fabric (5) to the upper surface of the primer (4), and the FRP woven fabric (5) The surface protection layer structure of the concrete structure by applying the epoxy solution on the upper surface first to form a primary coating layer (6), drying and then applying the epoxy solution a second time to form a secondary coating layer (6).