JP2000248690A - Method and equipment for reinforcing concrete structure - Google Patents

Abstract

(57) [Problem] To provide a method and an apparatus for reinforcing the strength of a concrete structure against shearing force. SOLUTION: A reinforcing material (16) bonded to concrete of a structure has reinforcing fibers extending in a main direction (A),
The surface of at least one fixing plate (17) fixed to the concrete of the structure is fixed so as to be flush with the surface (15) of the structure to which the reinforcement is mounted. A portion of the stiffener is adhered to the outer surface of the fixation plate and secured to the structure, thereby incorporating the shear stress generated by the stiffener into the unreinforced concrete layer on the reinforced surface. By pulling parallel to the main direction, to ensure the prestress on the reinforcement,
The fixing plate is conveniently arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the field of structural reinforcement for buildings.

[0002]

2. Description of the Related Art In this field, it is common practice to bond a reinforcing material on a portion of a structure to be reinforced with a suitable resin.

[0003] In one conventional method, rail mite (L
As is known as the "hermite" method, a reinforcing material consisting of a steel sheet adhered to the concrete after the adhesive surface has been prepared is usually used. This conventional method is subject to various changes, especially those in keeping with the development of the technology used to make the materials, and more particularly, is often difficult to handle and requires special attention to combat corrosion. We have experienced changes that will replace the necessary sheet metal making.

[0004] Thus, over the past several years, in the form of bonded plates (see, for example, FR-A-25948731), then in the form of bonded fibers (US-A-530).
8430) and the use of synthetic materials in the form of bonded fabrics has seen developments in reinforcement techniques. The latter form of reinforcement has a number of advantages, especially ease of use and the fact that it can be applied to surfaces of various shapes.

[0005] These numerous types of adhesive reinforcement have significantly improved the static and dynamic properties of the reinforcement structure. Not only that, but the destruction of the reinforcement itself became extremely rare. FIG. 14 shows a schematic cross-section of a reinforced concrete beam 8 supported on two supports 9 at both ends, with the bottom of the beam being tensioned between these two supports 9 in the longitudinal direction of the beam. A reinforcing material 10 is provided which is bonded to the reinforcing member. The bonded stiffener 10 improves the properties of the concrete beam 8 when subjected to a force F to generate a bending between the two supports 9. If the force F is too great and the beam structure is destroyed, the failure is "overlapping" concrete, i.e., between the surface provided with the bonded reinforcement 10 and the lower reinforcement rod 11. It is easy to occur on thick parts of concrete without reinforcement. Generally, the fracture of the rupture portion 12 is caused by a tearing force E synthesized from a reaction force R from one of the supports 9 and a tensile force T exerted by the reinforcing material 10 on one end of the bonded reinforcing material 10. Starts near the part, after which the failure is
Spread along one. In other words, it is the concrete of the structure that breaks in the area where shear stress is acting rather than compressive stress (the desired form of stress).

[0006] As a result, the properties of bonded reinforcement are not fully utilized effectively.

[0007] In order to increase the breaking strength of a beam reinforced by a metal plate with a beam as shown in FIG.
It has been proposed to glue additional slabs called sides to the sides of the beam to resist concrete shear. The disadvantage of this method is that it can only be used if both sides of the beam are accessible. As a practical matter, the stiffeners are often glued onto slabs or walls where lock installation is not possible.

[0008] Patent application FR-A-2754556 includes:
A method for reinforcing a reinforced concrete structure with a bonded carbon fiber based synthetic reinforcement is described, wherein a carbon fiber based mechanical reinforcement is provided between the bonded reinforcement and the concrete reinforcement. A roving of carbon fiber and an adhesive resin are placed in the holes drilled obliquely through the structural concrete to provide a mechanical bond. This provides resistance to shear stress.

[0009] Patent application WO 96/21785 describes a method of fixing the end of a bonded synthetic reinforcement onto a concrete structure, which method comprises placing an inclined end in the structure concrete. The purpose of the present invention is to form a recess provided with an end of the reinforcing material adhered along the recess. A wedge-shaped insert is then placed over this end to restore surface continuity. The insert may be glued to the concrete or secured therein by bolts or pegs. Securing the reinforcement end in this way causes this end to bite into the concrete structure to some extent.

Another approach is to place the adhesive resin on the synthetic reinforcement and at the same time apply prestress by tension (FR-A-2594871 or US-A).
A-5661785). Thereby, the load condition of the structure is improved. At the same time, the prestress reinforcement exerts a compressive force on the overlapping concrete, reducing the occurrence of the above-mentioned problems.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to provide another solution for limiting the shear stress experienced by overlaid concrete on a reinforcing surface of a structure.

[0012]

SUMMARY OF THE INVENTION Accordingly, an apparatus for reinforcing a concrete structure according to the present invention includes a reinforcement bonded to concrete of the structure and at least one area of the reinforcement of the structure. And fixing means. The reinforcement has at least one reinforcement fiber extending in the main direction. The fixing means has at least one fixing plate fixed to the concrete of the structure, and is fixed so that an outer surface of the fixing plate is flush with a surface of the structure to which the reinforcing member is attached. . The fixing portion of the reinforcing member is adhered to the outer surface of the fixing plate.

The fixed plate fixed to the concrete typically (but not necessarily) takes on the shear forces generated by the stiffener bonded to the fixed part abutting the ends of the stiffener.

[0014] The mounting of the fixing plate so as to be coplanar ensures that the composite stiffener has a continuous bonding plane without geometrical collapse that would otherwise be able to bulge. You.

The fixing plate is fixed to concrete by a connecting member of a known structure. In a typical example, the connecting member is designed to be able to constantly absorb the forces from the areas and surfaces where the force is applied by the bonded synthetic reinforcement.
It is arranged to extend into a large concrete area with a reinforcing member.

In a preferred embodiment of the present apparatus, a tension maintaining means for maintaining the tension of the reinforcing member in parallel with the main direction is provided. Preferably, the tension maintaining means comprises a device for locking a fixing plate in a mounting seat provided in a fixed support member fixed to concrete.

Another aspect of the present invention is a method for reinforcing a concrete structure, wherein at least one recess is formed in the surface of the structure, and a reinforcing material including reinforcing fibers is provided on the surface of the structure. Glued, at least some of the reinforcing fibers,
The fixing plate is arranged along the main direction of the surface of the structure, the outer surface of the fixing plate is flush with the surface of the structure, and the reinforcing member has at least one region fixed to the recess. It is disposed so as to adhere to the outer surface of the device.

Other aspects and advantages of the present invention will become apparent from, but not limited to, the following description of embodiments and the accompanying drawings.

[0019]

Next, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are views of the present invention applied to a concrete structure made of reinforced concrete, wherein one surface 1 of the concrete structure is shown.
5 is provided with a bonded reinforcing material 16.

The stiffener 16 is designed to withstand a tensile force in the main direction A of the surface 15. Preferably, the stiffener comprises a treated carbon fiber strip or a carbon fiber fabric aligned parallel to direction A, wherein the vertical yarns of the carbon fiber fabric are aligned in direction A. The carbon fibers are impregnated with a resin that cures at room temperature. In particular, the reinforcement 16 is placed as follows. That is, the surface 15 is coated with a liquid epoxy resin that can be cured at room temperature, and then the strip or woven fabric is bonded so that the resin penetrates the fibers and produces an adhesive action.
It is disposed on the surface on which the resin is applied. It is only necessary to apply a pressing action to the strip or fabric, and it is not necessary to apply pressure for a long time.

The resin used is, for example, one resin base commercially available under the trade name “CECA XEP3935 / A” and the other resin based on the trade name “CECA XEP2919”.
/ B ", a two-component epoxy resin made with a curing agent commercially available under the trade name CESA
S. A. , 12 place de l'Iris, L
a Defence 2, Cedex 54, 9206
2 Manufactured and sold in PARIS LADEFENSE (France).

This resin, when used in liquid form, has a viscosity of 1,000 to 10,000 mPa.s at room temperature. s.

The resin, once cured, has:-an anti-shearing force which corresponds to the shearing force of the material from which the structure is made;-5 to 100 MPa with an elongation of 0.5 to 10%.
Tensile strength in the range between 5 and 100 MPa with a shrinkage of 0.5 to 10%
And the maximum breaking strength in the range between.

The bonded carbon fibers forming the web or fabric 16 have a tensile strength in excess of 1500 MPa and an elastic modulus between 200 and 400 GPa.

The carbon fiber strip or woven fabric 16
It extends beyond the area of the structure to be reinforced, such that its ends are fixed in the concrete of the structure.
In order to fix each end, a fixing plate 17 is placed so that its outer surface is flush with the concrete surface 15 and the end of the reinforcement 16 is glued thereon.

The length L (measured parallel to the direction A) of the portion of the reinforcement 16 adhered on the fixing plate 17 is generally at least 10 cm, which indicates that shear stress is efficiently absorbed. Guaranteed. The fixing plate 17 is desirably made of a steel plate having a thickness of at least 5 mm in order to provide sufficient strength against shearing. The particular dimensions and material of the fixing plate 17 and the characteristics of the fixing means used to fix it in the concrete are to accommodate the different forms of stress that each structure to be reinforced must withstand. And parameters of the characteristics of the synthetic reinforcement.

These fixing points of the stiffener 16 are made as follows. That is, before bonding the reinforcing member 16, the concave portion 19 is formed at the position of the end of the reinforcing member to be fixed. The bottom of the recess 19 is treated with an undercoat mortar to smooth it. Next, in order to receive the connecting member 18 of the fixing plate,
A hole 20 is drilled in the concrete. These holes 20
Extends down to a reinforcing rod (not shown) in the concrete structure to form a suitable connection between the reinforcing rod and the stiffener 16. A previously prepared fixing plate 17 (by sanding) is received in the recess and secured by a connecting member 18 mounted in a hole 20 to receive the glued reinforcement. Typically, the connecting member 18 is a steel rod mounted in the hole 20 and is chemically and mechanically sealed in the hole. The coupling member can also be made of another material with good and essential properties under shear stress and tension. These connecting members may or may not be pre-tensioned (prestressed).

When positioned and fixed, the outer surface of the fixing plate 17 is flush with the surface 15 of the structure to which the reinforcement 16 is adhered. The stiffener 16 can be glued in the manner described above such that its end covers the fixing plate 17. As an application, protective and / or decorative treatments can be applied to the reinforcing surface.

In the embodiment shown in FIG. 3, the reinforcing member 16 is held between the fixed plate 17a and the second fixed plate 17b to which it is adhered. The second fixing plate 17b has the same design as the fixing plate 17a. The second fixing plate is tightened to the reinforcing member 16 and the fixing plate 17a by a stress acting on the connecting member 18 by a nut, for example.

In the embodiment shown in FIG. 4, the support 24 is welded to the outer surface of the fixing plate 27 to support the axis of the roller device 25 in the direction perpendicular to the direction A. A movable or stationary roller device 25 is used to apply tension while the stiffener web 16 is adhered. For example, a woven fabric strip is wound around a roller device 25 and tensioned by its action. Alternatively, tension is transmitted over the roller device 25 onto the web 16, which guides the web along the surface of the structure to be reinforced and applies tension parallel to this surface. Work as a guide for.

FIGS. 1 to 4 show the invention in which the end of the bonded reinforcement is directly fixed. Any portion of the stiffener can be secured in a similar manner by covering a securing plate appropriately secured to the structure by the connecting member. In general, the reinforcement method proposed by the invention has the advantage that it can be used with very different types of reinforcement surfaces.

In the embodiment shown in FIGS. 5 to 13, the fixing plate to which the end of the synthetic reinforcing member 16 is adhered is
Not directly fixed to concrete. The fixed support members 30, 40, 60 (not shown in the examples shown in FIGS. 10 and 11) are, for example, the same connecting members 1 as described above.
By means of 8, it is fixed in each recess previously formed in the concrete. The fixed support members 30, 40,
At 60, an opening is provided toward the outside of the structure, and the fixing plate 32,
Mounting seat 31, designed to receive
41 and 61 are provided.

In an example of use, in order to maintain the prestressing tension in the composite reinforcement 16 along the main direction A, the locking device will fix the fixing plates 32, 42, 52, 62 to the mounting seat 31,
Lock inside 41,61.

In the embodiment shown in FIGS. 5 to 7, the support member 30 and the fixation plate 32 have an open surface on the outer surface of the structure, which is designed to receive a device for tensioning the web 16. Holes 33 and 34 are provided. The tensioning device has one or more extendable jacks, one end of which is connected to the hole 33 and the other end of which is connected to the hole 34. When these jacks are urged, the fixing plate 32 is slid in the mounting seat 31 to apply tension to the strip 16 previously bonded at one end to the fixing plate 32. During and after hardening of the adhesive applied to the concrete surface, a taper 35 is arranged in the mounting seat 31 in the direction of the fabric strip 16 to hold the fixing plate 32 securely.

In the example shown in the figure, both ends of the mounting seat 31 are provided with two longitudinal grooves 36a and 36b formed in the thickness of the fixed support member 30, and the groove 36a is formed in the fixed plate 32. Receiving the insertion edge 37a provided at the side end,
The other groove 36b receives the insertion edge 37b provided at the opposite side end of the tapered member 35. The fixing plate 32 and the tapered member 35 are in contact with each other along the surface 38,
The surface 38 is parallel to the direction A, and the fixing plate 32 is
It is inclined with respect to the plane of the structure so that the taper 35 can prevent it from coming out of 1. Further, a taper member 35 is placed on the fixed support member 30 along an inclined portion 39 having an angle with respect to the direction A, and the fixed plate 32 is attached to the mounting seat 31 when the tension device is urged. It is only necessary to extrude in the direction of the fiber strip in the mounting seat 31 so as to lock, so that the prestressing tension in the strip 16 is maintained during and after curing of the adhesive.

FIGS. 8 and 9 show another embodiment in which both side ends of the fixing plate 42 are provided with respective differential portions cooperating with grooves 46 provided in the side ends of the mounting seat 41. FIG. A leading edge 47 is provided. No groove 46 is provided in the front portion 43 of the mounting seat 41 by a length at least equal to the length of the fixing plate 42. In the front portion 43, the mounting seat 41
Is wider than the fixed plate 42 so that the fixed plate 42 can be inserted.

The fixing plate 42 can slide backwards when the composite reinforcement is tensioned, is guided by the groove 46 and is kept in place. Two tapered members 44, 45 are inserted into the front portion 43 of the mounting seat 41 and are used to support and tension each other along the inclined surface, and the tapered member 44 is connected to the front end of the fixed plate 42. , And the tapered member 45 is in contact with the front end of the mounting seat 41. As shown by an arrow P in FIG. 8, the tapered material 4 is attached to the synthetic reinforcing material previously bonded to the fixing plate 42.
Tension is applied by pressing the 4, 45 against each other.

In the embodiment shown in FIGS. 10 and 11, the fixing plate 52 has a slot 53 perpendicular to the direction A and slightly wider than the width of the woven fabric strip 16. The strip 16 is inserted into the slot 53 and wrapped around a portion 54 of the securing plate 52 in front of the slot 53 before being glued to the portion 54. Thereby, the reinforcing member 16
The connection strength between the and the fixing plate 52 increases. Once this connection has been made, the fixing plate 52 can be fixed to a fixed support member previously fixed to the surface of the concrete to be reinforced. This fixed support member is of a type similar to the type related to, for example, FIGS. 5 to 9 described above.

In the embodiment shown in FIGS. 12 and 13, the fixing plate 62 also has a slot 63 perpendicular to the direction A. Each of the reference numerals 62a and 62b is a slot 6
3 shows a front region and a rear region of the fixing plate 62 located at the front and rear portions. In this embodiment, a woven strip 16 is used.
As shown in FIG. 12, two regions 62 of the fixing plate 62
a and 62b are wound in an S-shape. The end of the band 16 is applied to the outer surface of the rear region 62b, from which the band 16 wraps around the rear end of the fixed plate 62 and creates a slot 63 along the inner surface of the region 62b. It should pass, go around the front end of the fixed plate 62 along the outer surface of the region 62a, return around the rear end of the fixed plate 62 along the inner surface of the regions 62a, 62b, and be strengthened. Before contacting the surface of the concrete, areas 62b,
Return along the outer surface of 62a.

In the S-shaped winding, the strip 16 is adhered to the surface of the concrete while the strip 16 is fixed to the fixing plate 6.
The strip 16 is firmly fixed to the fixing plate 62 so that it can be adhered to the fixing plate 62. Further, the fixed support member 6
12, the front end of the fixing plate 62 is brought into contact with the front end of the mounting seat 61 provided therein, and the rear end of the fixing plate 62 is pushed in as shown by the dotted line in FIG. Material 16 is tensioned. Once the tension is applied, the fixing plate 62 is screwed to the fixing support member 60, for example, through holes 64 provided on both sides of the strip 16 of the fixing plate 62, and is fixed in the mounting seat 61. As shown in FIG. 13, the front end of the fixing plate 62 is not in contact with the front end of the mounting seat 61 except on both sides of the width of the strip 16 so that the fabric 16 is not damaged.

[Brief description of the drawings]

FIG. 1 is a plan view of a reinforcing device according to the present invention.

FIG. 2 is a cross-sectional view of the device of FIG. 1 along the plane III-III.

FIG. 3 is a view similar to FIG. 2, but showing another embodiment of the device.

FIG. 4 is a plan view showing another embodiment of the device,
It is a figure in which the fixing plate is provided with a means for applying tension to the reinforcing member.

5 shows another embodiment of the device, FIG.
FIG. 6 is a longitudinal sectional view taken along a plane VI-VI in FIG.

FIG. 6 is a plan view showing another embodiment of the device.

FIG. 7 is a view showing another embodiment of the apparatus, and FIG.
FIG. 8 is a cross-sectional view taken along plane VIII-VIII in FIG.

FIG. 8 is a plan view showing another embodiment of the device.

FIG. 9 is a view showing another embodiment of the device, and FIG.
FIG. 5 is a cross-sectional view along the plane XX in FIG.

10 shows an embodiment of the fixing plate of the device, and is a longitudinal sectional view along the plane XI-XI in FIG. 11;

FIG. 11 is a plan view showing an embodiment of a fixing plate of the device.

12 is a view showing another embodiment of the fixing device, and is a longitudinal sectional view along a plane XIII-XIII in FIG. 13;

FIG. 13 is a plan view showing another embodiment of the fixing device.

FIG. 14 is a schematic diagram showing a state in which a reinforced concrete beam provided with an adhesive reinforcing material is broken by the action of bending stress.

[Explanation of symbols]

8 Concrete beam 9 Support 10 Reinforcement material 11 Reinforcement rod 12 Breaking part 15 Surface 16 Reinforcement / strip material 17, 17a, 27, 32, 42, 52, 62 Fixing plate 17b Second fixing plate 18 Connecting member 19 Recess 20 Hole 24 Support 25 Roller device 30, 40, 60 Fixed support member 31, 41, 51, 61 Mounting seat 33, 34, 64 Hole 35, 44, 45 Tapered material 36a, 36b Groove 37a, 37b, 47 Insert edge 38 surface 39 inclined portion 43 front portion 46 groove 53, 63 slot hole 54 fixing plate portion 62a front region 62b rear region 63 slot hole 64 hole

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme court ゛ (Reference) (72) Inventor Christian Tourner France 78310 Le Meni Saint Denis L. Berlie 9 (72) Inventor Sebastian Lardy France 92120 Montrouge Le Louis Le Jeune 4

Claims (21)

[Claims] 1. A stiffener (16) glued onto the concrete of a structure and fixing means for fixing at least one region of the stiffener to the structure, said stiffener comprising at least one stiffener. Having reinforcing fibers extending in the main direction (A),
An apparatus for reinforcing a concrete structure, wherein the fixing means comprises at least one fixing plate (17, 17a, 27, 32, 4, 4) fixed to the concrete of the structure.
2, 52, 62), wherein the outer surface of the fixing plate is fixed in such a manner that the outer surface of the fixing plate is flush with the surface (15) of the structure to which the reinforcing material is attached, and the area of the reinforcing material Is bonded to an outer surface of the fixing plate, for reinforcing a concrete structure. 2. The reinforcing member (16) is provided with fixing plates (17, 17).
a, 27, 32, 42, 52, 62) reinforcing the concrete structure according to claim 1, covering the outer surface over a length (L) of at least 10 cm measured parallel to the main direction (A). Equipment for. 3. A fixing plate (17, 17a, 27, 32, 4)
2, 52, 62) having a shear strength of greater than 1.5 MPa. 4. A fixing plate (17, 17a, 27, 32, 4)
4. The apparatus for reinforcing a concrete structure according to claim 3, wherein (2, 52, 62) is made of a steel plate having a thickness of at least 5 mm. 5. An outer surface of the fixing plate (27) is provided with a reinforcing material (1).
5. A device for reinforcing a concrete structure according to claim 1, comprising support means (24) for a device (25) for pulling 6) in the main direction (A). 6. A stiffener is held between a fixed plate (17a) and a second fixed plate (17b), said fixed plate being fixed to concrete by a common connecting member (18). An apparatus for reinforcing a concrete structure according to any one of claims 1 to 5. 7. The apparatus for reinforcing a concrete structure according to claim 1, further comprising tension maintaining means for maintaining the tension of the reinforcing material parallel to the main direction (A). 8. A mounting seat (31, 41, 5) provided in a fixed support member fixed to concrete, wherein tension maintaining means for maintaining the tension of the reinforcing material in parallel with the main direction (A) is provided.
1, 61), fixed plate (32, 42, 52, 62)
8. A device for reinforcing a concrete structure according to claim 7, comprising a locking device for locking the concrete structure. 9. The at least one taper (35; 4) disposed between the fixed support member and the fixed plate so that the locking device resists tension acting in the reinforcement (16).
Device for reinforcing a concrete structure according to claim 8, comprising (4, 45). 10. A fixing plate (52, 62) having a slot (53, 63) substantially perpendicular to the main direction (A), and a stiffener (16) wrapped around the fixing plate to form the groove. 9. A strip having the shape of a strip having an end passing through the hole.
Or a device for reinforcing a concrete structure according to item 9. 11. A method for reinforcing a concrete structure, comprising at least one recess (19) in the surface (15) of the structure.
The reinforcing material (16) having the reinforcing fiber is formed on the surface (1) of the structure.
5) adhering thereon, at least some of the reinforcing fibers are aligned along the main direction (A) of the surface of the structure, and at least one area of the reinforcing material is located on the outer surface of the fixing plate Are fixed to the recesses so that are flush with the surface of the structure (17, 17a, 27, 32, 42, 5).
2, 62) A method for reinforcing a concrete structure, which is provided so as to adhere to the outer surface. 12. The method for reinforcing a concrete structure according to claim 11, wherein the fixing plates (17, 17a, 27) are fixed in the recesses by the respective connecting members (18) before bonding the reinforcing material. 13. A fixed plate (17a) and a second fixed plate (1).
The method for reinforcing a concrete structure according to claim 11, wherein a reinforcing material is arranged between the reinforcing member and the connecting member, and the reinforcing member is fixed by a connecting member. 14. To tighten the second fixing plate (17b) against the reinforcing member (16) and the fixing plate (17a),
14. The method of reinforcing a concrete structure according to claim 13, wherein the connecting member (18) is stressed. 15. A fixing plate (17, 17a, 27, 32,
42. The stiffener (16) is arranged to cover the outer surface (42, 52, 62) of at least 10 cm in length (L), measured parallel to the main direction (A). A method for reinforcing a concrete structure according to any one of the preceding claims. 16. A reinforcing member (16) is fixed to a fixing plate (17, 1).
7a, 27, 32, 42, 52, 62) on the outer surface,
12. Arranged halfway in parallel with the main direction (A).
A method for reinforcing a concrete structure according to any one of claims 15 to 15. 17. The concrete according to claim 11, wherein a reinforcement (16) tensions the reinforcement while being glued onto the surface (15) of a structure. How to reinforce structures. 18. The apparatus according to claim 1, wherein the tension is applied to a device (2) mounted on a fixed plate.
18. The method for reinforcing a concrete structure according to claim 17, wherein the method is added by 5). 19. A fixed support member is fixed in a recess provided on said surface (15) of a structure, and the tension applied when a reinforcement is adhered to said surface of the structure. 19. The method of reinforcing a concrete structure according to claim 17 or 18, wherein a fixing plate is locked in a mounting seat provided in the fixed support member for maintenance. 20. The fixing device according to claim 19, wherein the region is a fixing plate.
20. After being glued to 2), a stiffener (16) is glued on the surface (15) of the structure, and the stiffener is tensioned by tension applied to the fixing plate. A method for reinforcing a concrete structure according to any one of the preceding claims. 21. Adhering said area to a fixing plate (62) while simultaneously adding a reinforcement (16) to said surface (15) of a structure.
20. The method of reinforcing a concrete structure according to any one of claims 17 to 19, wherein the concrete structure is adhered on the concrete structure.