JPH1134199A - Reinforcing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable reinforcing against stress applied to the structure material surface from every direction by using one piece of reinforcing material. SOLUTION: A reinforcing material is provided with a first reinforcing thread group 10 composed of multiple reinforcing threads 11, which are arranged mutually in parallel in the first direction; a second reinforcing thread group 20 composed of multiple reinforcing threads 21, which are arranged mutually in parallel in the second direction, which intersects diagonally at a specified angle with respect to an orthogonal line crossing at right angles with the first reinforcing thread group 10; and a third reinforcing thread group 30 composed of multiple reinforcing threads 31, which are arranged mutually in parallel in the third direction, which intersects diagonally and symmetrically with the second reinforcing thread group 20 with respect to the orthogonal line crossing at right angle with the first reinforcing thread group 10. A layer of sheet woven structure is woven by alternately intersecting each reinforcing thread 11, 21, and 31 composing the first, second, and third reinforcing thread groups, so that the pattern of the weave makes opening parts 5. Thereby, the woven structure is used for reinforcing/repairing of structure 1 by fixing to the structure 1 surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing material used for repairing and reinforcing concrete and wood structures, and more particularly to a sheet-like reinforcing material reinforced with fibers.

[0002]

2. Description of the Related Art Conventionally, as this kind of reinforcing material,
In general, the reinforcing fibers were arranged in one direction, and the structural materials were reinforced and repaired by attaching the reinforcing fibers to the surface of the structural material in accordance with the direction in which the main stress was applied. .

[0003]

However, since the conventional reinforcing material is a unidirectional material arranged in one direction of the reinforcing fibers, it can reinforce the stress acting in the direction in which the reinforcing fibers are arranged. Actually, stress in an unexpected direction may act on the surface of the structural material, and the reinforcement is not sufficient.

Conventionally, in order to cope with such stresses in a plurality of directions, a plurality of reinforcing materials are bonded to each other, but it is necessary to laminate a plurality of reinforcing materials, which is troublesome.

[0005] In addition, in the case of a unidirectional material, there is a possibility that the direction of the fiber base material is mistaken during construction.

Further, in the case of a one-way material, the surface rigidity is deviated in one direction, so that it is difficult to handle and the followability of the curved surface is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a reinforcing material which can reinforce all directions of stress acting on the surface of a structural material by itself.

[0008]

In order to achieve the above-mentioned object, the present invention uses reinforcing yarns in which high-strength and high-elasticity long fibers are bundled and arranged in parallel in a first direction. A first reinforcing yarn group formed of a large number of the reinforcing yarns and a second direction intersecting obliquely at a predetermined angle with respect to an orthogonal line orthogonal to the first reinforcing yarn group. A second group of reinforcing yarns composed of a large number of the reinforcing yarns arranged, and a third group of the second reinforcing yarns symmetrically obliquely intersecting with the second group of reinforcing yarns with respect to an orthogonal line orthogonal to the first group of reinforcing yarns. A third reinforcing yarn group including a large number of the reinforcing yarns arranged in parallel with each other in the direction of.
The reinforcement yarns that compose the above-mentioned reinforcement yarn group are constructed in a single-layer sheet-like woven structure that is woven alternately and crosswise, and are fixed to the surface of the structural material and used for reinforcing and repairing the structural material. And

As the reinforcing yarn, carbon fiber (CF), glass fiber (GF), aramid resin (ArF), PBO fiber, polyarylate fiber, high strength polyethylene fiber, polyacetal fiber, alumina fiber (AF), silicon carbide fiber (SiCF), Tyranno fiber, boron fiber, amorphous metal fiber, stainless steel fiber, superelastic NT alloy wire, titanium wire and the like can be applied.

As the structural material, it can be applied to various structural materials such as concrete structural materials, stone materials, wood, metal materials and the like.

According to the present invention, since the first, second and third reinforcing yarn groups are provided, one layer has strength in three directions and can cope with a plurality of stresses acting on the surface of the structural material. be able to. In addition, construction can be performed simply by attaching a single reinforcing material, and construction can be performed easily.

Furthermore, since the reinforcing yarns are arranged in three directions, there is basically no restriction on the directionality. However, it is optimal to match the direction of any of the reinforcing yarn groups with the direction of the stress.

Further, since the reinforcing material has a woven structure in which reinforcing yarns of a reinforcing yarn group in three directions alternately intersect with each other.
Since the texture is stopped by the reinforcing yarns crossing the direction and the surface rigidity is uniform and stable, the handleability during construction is good, and the curved surface followability is also excellent. In addition, since the gaps between the reinforcing yarns are also kept uniform, even when solidified with a matrix resin, the matrix resin is uniformly impregnated as a whole without any unevenness, so that the resin impregnating property is good.

In particular, it is preferable that the woven fabric has a structure in which an opening is formed in the weave. By doing so, the curved surface followability can be further improved, and the amount of the impregnated matrix resin can be increased.

The fixing to the surface of the structural material is an adhesive fixing in which the matrix resin is impregnated and adhered to the structural material. It is characterized in that the displacement in the direction is prevented.

That is, the entire reinforcing material is firmly fixed in the shearing direction by the anchor effect of the matrix resin that has hardened by penetrating into the opening, thereby preventing peeling.

The fixing to the surface of the structural material is embedding and fixing to the surface of the structural material, and is characterized in that the structural material is bitten into the opening to prevent a shift in the shear direction.

As the structural material, a concrete-based material is preferable. In this case, the structural material itself bites into the opening, and the shear effect is prevented from being shifted by the anchor effect.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the illustrated embodiment.

FIG. 1 is a schematic diagram showing a repair / reinforcement structure of a structural material using a reinforcement material according to one embodiment of the present invention.

That is, reference numeral 1 denotes a structural material such as a concrete structural material, and a reinforcing material 2 is provided on the surface of the structural material 1.
Is impregnated with a matrix resin 3 and adhered and fixed to form a reinforcing layer 4. Although the matrix resin 3 itself has adhesiveness to the structural material 1, a primer may be applied to the base to enhance the adhesiveness.

As shown in FIG. 1A, the reinforcing material 2 includes a first reinforcing yarn group 10 composed of a plurality of reinforcing yarns 11 arranged in parallel in a first direction and the first reinforcing yarn group 10. A second reinforcing thread group 20 composed of a number of reinforcing threads 21 arranged in parallel in a second direction obliquely intersecting at a predetermined angle α with an orthogonal line V orthogonal to the reinforcing thread group 10
And an orthogonal line V orthogonal to the first reinforcing yarn group 10
And a third reinforcing thread group 30 composed of a number of reinforcing threads 31 arranged parallel to each other in a third direction symmetrically intersecting the second reinforcing thread group 20 in the oblique direction. One-layer sheet-like woven structure in which the reinforcing yarns 11, 21, 31 of the first, second and third reinforcing yarn groups 10, 20, 30 alternately cross each other so that the weave becomes the opening 5. Is configured.

The woven fabric structure of the reinforcing material may be a woven fabric structure in which two reinforcing yarns are woven as shown in FIG. 1C, or a woven fabric structure shown in FIG. By folding the reinforcing yarns so as to fill the openings 5 having the structure shown in ()), a woven structure having a small opening can be obtained.
By doing so, the number of reinforcing yarns per unit area increases, so that the strength of the reinforcing material can be further increased.

As the reinforcing yarn, a long fiber having high strength and high elasticity,
For example, carbon fiber (CF), glass fiber (GF), aramid resin (ArF), PBO fiber, polyarylate fiber, high strength polyethylene fiber, polyacetal fiber, alumina fiber (AF), silicon carbide fiber (SiCF), tyranno fiber , Boron fiber, amorphous metal fiber, stainless steel fiber, superelastic NT alloy wire, titanium wire and the like.

The second reinforcing yarn group 20 and the third reinforcing yarn group 30
With respect to the orthogonal line V of the first reinforcing yarn group 10
Intersect at an angle of degrees.

On the other hand, the matrix resin 3 is preferably a room temperature-curable resin in consideration of actual construction, but various resins such as a thermosetting resin and a thermoplastic resin can be applied as necessary. As the cold-setting resin, for example, unsaturated polyester resin, vinyl ester resin, epoxy resin and the like can be used.

In general, the construction is performed by applying a primer to the surface of the structural material, applying a matrix resin, attaching a reinforcing material thereon, and further applying a matrix resin to reinforce the matrix material. This is accomplished by impregnating the yarn fibers.

According to the present invention, the first, second and third reinforcing yarn groups 10, 20, and 30 are provided, so
It has strength in the direction and can cope with a plurality of stresses acting on the surface of the structural material 1. In addition, it is only necessary to attach one piece of the reinforcing material 2 to the construction, and the construction can be easily performed.

Furthermore, since the reinforcing yarns 11, 21, 31 are arranged in three directions, there is basically no restriction on the arrangement direction of each reinforcing yarn at the time of construction. However, it is optimal to match the direction of any of the reinforcing yarn groups 11, 21, 31 with the direction of the stress.

Further, the reinforcing material 2 is composed of a reinforcing yarn group 1 in three directions.
Since the reinforcing yarns 11, 21, and 31 of 0, 20, and 30 have a woven structure in which they alternately intersect, the texture is stopped by the intersecting reinforcing yarns 11, 21, and 31 in three directions. A stable opening 5 is formed between the stitches 11, 21, 31. Therefore, the surface stiffness is uniform and stable, the handleability during construction is good, and the curved surface followability is excellent.

Also, since the openings 5 are present in a uniform size and stably, even when the matrix resin 3 is solidified, the matrix resin 3 is uniformly impregnated through the openings 5 as a whole. Good resin impregnation.

Further, by the anchor effect of the matrix resin 3 which has hardened by penetrating into the opening 5, the reinforcing material 2 is firmly fixed to the entire surface of the structural material 1 in the shearing direction, and peeling is prevented.

FIG. 2 shows an example of a concrete structure using the reinforcing material of the present invention.

FIG. 2 (a) shows an example of use on a concrete wall 102, FIGS. 2 (b) and 2 (c) show an example of use on a concrete pillar 101, and FIG. 2 (d) shows an example of use on a tunnel wall 103. ing. Of course, the present invention is not limited to these examples, and can be widely applied to structural materials of various structures.

On the other hand, FIG. 3A shows a structure in which the surface of the reinforcing material 2 is adhered and fixed to the surface of the structural material 1 in a state where the surface is exposed.

FIG. 3B shows that the reinforcing material 2 is replaced with the structural material 1.
2 shows an example of embedding in the surface.

In this case, the meat portion of the structural material 1 bites into the opening 5 to prevent a shift in the shear direction.

The reinforcing material of the present embodiment is not limited to concrete structural materials, but is also used for reinforcing and repairing stone materials of masonry structures, wood of wooden buildings, and metal materials of metal structures. Of course you can.

[0039]

As described above, according to the present invention,
Since the first, second and third reinforcing yarn groups are provided, one layer has strength in three directions, so that it is possible to cope with a plurality of stresses acting on the surface of the structural material. In addition, it is only necessary to attach one fiber base, and the construction can be easily performed.

Furthermore, since the reinforcing yarns are arranged in three directions, there is basically no restriction on the directionality. However, it is optimal to match the direction of any of the reinforcing yarn groups with the direction of the stress.

Furthermore, since the reinforcing yarns of the three-directional reinforcing yarn group have a woven fabric structure in which the reinforcing yarns are alternately crossed, a stable opening is provided between the reinforcing yarns, and the handleability during construction and the impregnation of the matrix resin are achieved. It has good characteristics and excellent surface followability.

When the matrix resin is impregnated and bonded to the structural material by impregnation, the anchoring effect of the hardened matrix resin penetrating into the openings makes the entire reinforcing material firm in the shear direction. To prevent peeling.

In the case of fixing to the surface of the structural material by embedding and fixing the same to the surface of the structural material, the structural material itself bites into the opening, and the shift in the shear direction is prevented by the anchor effect.

[Brief description of the drawings]

FIG. 1A is a partially omitted cutaway plan view schematically showing a reinforcing structure using a reinforcing material according to an embodiment of the present invention;
FIG. 2B is a cross-sectional view of FIG. 2A, and FIGS. 2C and 2D are diagrams showing other examples of the structure of the reinforcing material.

FIG. 2 is a view showing various application examples of the reinforcing material of FIG. 1;

FIG. 3A is a cross-sectional view showing an example of use in a state where the surface of the reinforcing material is exposed, and FIG. 3B is a cross-sectional view showing a state in which the reinforcing material is embedded and fixed on the surface of the structural material. .

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Structural material 2 Fiber base material 3 Matrix resin 5 Opening part 10 First reinforcement thread group 11 Reinforcement thread 20 Second reinforcement thread group 21 Reinforcement thread 30 Third reinforcement thread group 31 Reinforcement thread

Claims (4)

[Claims] A first reinforcing yarn group comprising a plurality of reinforcing yarns arranged in a first direction in parallel with each other, using a reinforcing yarn in which high-strength and high-elasticity long fibers are bundled; A second reinforcing thread group including a plurality of the reinforcing threads arranged in parallel in a second direction obliquely intersecting at a predetermined angle with respect to an orthogonal line orthogonal to the one reinforcing thread group; A third reinforcement yarn comprising a plurality of reinforcement yarns arranged in parallel to each other in a third direction symmetrically obliquely intersecting with the second reinforcement yarn group with respect to an orthogonal line orthogonal to the first reinforcement yarn group. And a group of reinforcing yarns
The reinforcing yarns constituting the first, second and third reinforcing yarn groups are alternately crossed to form a single-layer sheet-like woven structure, which is fixed to the surface of a structural material. Reinforcing material characterized by being used for reinforcement and repair of materials. 2. The reinforcing material according to claim 1, wherein the woven structure is a structure in which an opening is formed in a weave. 3. The fixing to the surface of the structural material is an adhesive fixing in which the matrix resin is impregnated and bonded to the structural material, and the shearing of the matrix material with the matrix resin, which is filled and hardened in the opening of the weave, is performed. 3. The reinforcing material according to claim 2, wherein the directional displacement is prevented. 4. The fixing method according to claim 2, wherein the fixing to the surface of the structural material is embedding and fixing to the surface of the structural material, and the structural material is bitten into the opening to prevent a shift in the shear direction. Reinforcement material.