JPH0782706A - Rutted road mending method - Google Patents

Abstract

PURPOSE:To make regular mending works on ruts unnecessary by preventing formation of ruts while reducing costs required for the mending works, and to ensure safety for traffic. CONSTITUTION:A dent 22 of a rut 20 is filled with filling material 24 and a flat surface is made therewith, and the surface is coated with epoxy resin 26. Furthermore, an unidirectionally reinforced fiber sheet 1 is placed so that the reinforced fibers 4 can be arranged in the direction at 90 deg.+ or -45 deg. against the longitudinal direction of the rut, and the arranged reinforced fibers 4 are impregnated with epoxy resin 26. Thereby, formation of the rut can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a rut formed by running a vehicle, an aircraft or the like on a general road including an expressway, a passage in a premises of a factory, a runway of an airfield, etc. Is.

[0002]

2. Description of the Related Art In modern times, general roads including highways, aisles on the premises of factories, runways of airfields, etc. are paved with concrete or asphalt. There are fewer things you can do.

However, on general roads including highways, the traffic volume of vehicles including large trucks is increasing, and chains and spiked tires are worn especially in areas where there is snow or the road surface is frozen. The passage of vehicles makes it easier to make a rut. In addition, since vehicles that carry heavy objects and heavily-loaded aircraft frequently travel on the aisles of factories or on the runways of airfields, it is the current situation that ruts can easily occur.

[0004]

When a vehicle runs on a road with a rut formed in this way, when the wheels enter the rut, the steering wheel is taken and the running of the vehicle becomes unstable. As a result, There is a risk of causing a vehicle accident. Further, it is known that water accumulates in a rut when it rains, which causes a slip accident, especially on an expressway. The same can be said for the passages on the premises of factories or for the runways of airfields.

To repair such a rut, conventionally, in the case of a concrete road surface, the rut is filled with concrete,
I was going to flatten the road. Also, in the case of asphalt, the asphalt was similarly repaired by filling the rut and leveling it.

However, in such repair, since a rut is formed in the same manner as before after a certain period of time has passed, repeated repairs are required,
There have been major problems with traffic congestion, vehicle safety, repair costs, and so on.

Therefore, an object of the present invention is to prevent the formation of ruts and to eliminate the need for regular repairs, thereby ensuring the traveling safety of vehicles and the like and achieving a reduction in repair costs. It is to provide a repair method.

[0008]

The above objects can be achieved by the method for repairing a rut according to the present invention. In summary, the present invention is
In a method of repairing a rut formed by traveling of a vehicle or an aircraft, a filling material is filled in a recessed portion of the rut, and after flattening, a reinforcing fiber composite repair sheet is provided on the surface thereof, and the structure of the reinforcing fiber composite repair sheet is formed. This is a method for repairing a rut, characterized in that the reinforcing fibers, which are elements, are arranged and attached in a direction of 90 ° ± 45 ° with respect to the longitudinal direction of the rut.

It is also preferable that after applying the reinforcing fiber composite repair sheet, it is covered with sand as a slip stopper for the applied surface.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rut repair method according to the present invention will be described below in more detail with reference to the drawings. In the following description, the reinforcing fiber composite repair sheet includes at least a unidirectional reinforcing fiber sheet, a prepreg and a composite material.

First, an example of the unidirectional reinforcing fiber sheet used in the rut repairing method according to the present invention will be described with reference to FIG.

In the figure, the unidirectional reinforcing fiber sheet 1
Is the reinforcing fiber 4 on the support sheet 2 via the adhesive layer 3.
Are arranged in one direction and bonded.

The support sheet 2 is a scrim cloth,
Glass cloth, release paper, nylon film, etc. are used. Among them, in the case of using scrim cloth, glass cloth, etc., the matrix resin can be impregnated into the reinforcing fiber 4 from the support sheet 2 side. There is.
The thickness of the support sheet 2 is flexible and the reinforcing fibers 4 are
From the viewpoint of having a strength capable of supporting 1 to 500 μm,
It is preferably about 5 to 100 μm.

In principle, the adhesive forming the adhesive layer 3 may be any adhesive as long as it can at least temporarily bond the reinforcing fibers 4 to the support sheet 2, but it has the effect of reinforcing the reinforcing fibers 4 by the matrix resin. Similar effect to adhesive layer 3
Since it is preferable that the adhesive is also provided, a resin having a good compatibility with the matrix resin is preferably used, and for example, when an epoxy resin is used as the matrix resin, an epoxy adhesive is preferably used. . The thickness of the adhesive layer 3 is set to 5 to 100 μm, preferably 10 to 30 μm, as long as the reinforcing fibers 4 can be temporarily bonded.

The reinforcing fibers 4 are lightly disassembled by arranging a plurality of fiber bundles, which are bundled as filaments, or a fiber bundle that is lightly twisted into a bundle, arranged on the adhesive layer 3 and crushed from above, thereby strengthening. The fibers 3 are unidirectionally arranged and bonded on the support sheet 2 via the adhesive layer 3 in a state where the fibers 3 are laminated in a plurality of layers by binding with a sizing agent or twisting, and thus the desired unidirectional reinforcing fiber sheet 1 is obtained. can get.

The unidirectional reinforcing fiber sheet 1 as described above is
For example, it can be manufactured as shown in FIG.

That is, after the adhesive is applied by the adhesive application roll 7 on the support sheet 2 supplied from the sheet supply roll 6 to form the adhesive layer 3, the support sheet 2 is attached to the pair of pressure rollers. The adhesive on the support sheet 2 is fed into the pressing portion 8 provided with 8a and 8b, and at the same time, the fiber bundle 4A of the reinforcing fibers 4 and the releasing paper 9 from the releasing paper roll 10 are fed into the pressing portion 8. The fiber bundles 4A are arranged in one direction on the layer 3, and the release paper 9 is laid on it. Then, in this state, pressure is applied between the pressure rollers 8a and 8b and a support plate (not shown), and the fiber bundle 4A
Simultaneously with crushing, the reinforcing fibers 4 lightly separated by this are bonded onto the support sheet 2 via the adhesive layer 3. After that, the release paper 9 is wound by the release paper take-up roll 11, and the cover film 13 supplied from the film supply roll 12 is covered on the reinforcing fibers 4 of the support sheet 2 according to need, whereby the support sheet 2 is covered. A unidirectional reinforcing fiber sheet 1 obtained by arranging and adhering the reinforcing fibers 4 in one direction via the adhesive layer 3 of 1, that is, a tow sheet is obtained. The unidirectional reinforcing fiber sheet 1 thus obtained is wound on the winding roll 14.

Next, an embodiment of a rut repair method according to the present invention, which is performed by using the unidirectional reinforcing fiber sheet 1 as described above, will be described with reference to FIGS. 1 to 4.

As shown in FIG. 1, the rut 20 formed on the road surface R is generally formed in a substantially semicircular cross section along the traveling direction of the vehicle. When repairing the rut 20, first, as shown in FIG. 2, a semicircular recess 22 is filled with a filler 24, and the surface thereof is flattened so as to be flush with the road surface R. The filler 24 can be appropriately selected from concrete, mortar, mortar resin, asphalt, etc. depending on the paving material of the road surface R and the like. Next, the epoxy resin 26 is applied on the filler 24 including the partially flat road surface.

Further, as shown in FIG. 3, the epoxy resin 2
6, the unidirectional reinforcing fiber sheet 1 with the cover film 13 peeled off is arranged so that the support sheet 2 is on the outside, and the arranging direction of the reinforcing fibers 4 is 9 with respect to the longitudinal direction of the rut 20.
It is placed in the direction of 0 ° ± 45 °, preferably 90 ° ± 30 °, and is attached to the road surface while impregnating the epoxy resin 26 between the reinforcing fibers 4 of the unidirectional reinforcing fiber sheet 1. At this time, on the other hand, the fixing length L of the reinforcing fiber sheet 1 is preferably set to be at least 5 cm or more from both ends of the recess 22 of the rut 20. The support sheet 2 is removed if necessary.

The reinforcing fiber 4 in the longitudinal direction of the rut 20
If the arrangement direction of is deviated from the 90 ° ± 45 ° direction, vertical cracking may occur, which is not preferable.

If desired, the abrasion resistance can be increased by laminating a desired number of unidirectional reinforcing fiber sheets 1.

Further, as shown in FIG. 4, by covering the construction surface with sand 28 or the like as a slip stopper, it is possible to obtain a good result in the running safety of the vehicle or the like.

As the reinforcing fibers 4 of the unidirectional reinforcing fiber sheet, inorganic fibers such as T glass fibers having good wear resistance,
Organic fibers such as aramid fibers, polyarylate fibers and polyethylene fibers are preferred.

As described above, in the description of this embodiment, the unidirectional reinforcing fiber sheet generally called a tow sheet has been described as an example, but a fiber reinforced prepreg or a composite material may be used instead of the tow sheet.

The fiber reinforced prepreg may be obtained by impregnating the reinforcing fibers 4 as described above with a matrix resin such as an epoxy resin. In this case, the epoxy resin preferably contains a suitable curing agent so as to cure at room temperature. When repairing a rut, similar to the case of a unidirectional reinforcing fiber sheet, the recess of the rut is filled with a filler, and the surface is flattened.
It is carried out by carrying out a primer treatment as necessary and attaching a desired number of prepregs thereon.

Further, when the rut is repaired by using the fiber-reinforced composite material in which the above-mentioned fibers are used in combination as the reinforcing fiber which is in the cured state, it is carried out in substantially the same manner as the above-mentioned method. That is, it is carried out by filling the recessed portion of the rut with a filler, leveling the surface thereof, applying an adhesive agent thereon, laminating a desired number of sheets thereon, and attaching the composite material.

[0028]

As is apparent from the above description, the method for repairing a rut according to the present invention fills the recessed portion of the rut with the filler,
After flattening, the reinforcing fiber composite repair material is applied by applying it so that the reinforcing fibers which are the constituent elements of the reinforcing fiber composite repair material are in the direction of 90 ° ± 45 ° with respect to the longitudinal direction of the rut. It is possible to prevent the formation of ruts and to eliminate the need for regular repairs, to ensure the traveling safety of vehicles and the like, and to reduce the cost for repairs.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a rut that is an object of implementation of a rut repair method according to the present invention.

FIG. 2 is a cross-sectional view showing a first step in the embodiment of the method for repairing a rut according to the present invention.

FIG. 3 is a sectional view showing a second step of the example.

FIG. 4 is a sectional view showing a third step of the example.

FIG. 5 is a cross-sectional view showing a unidirectional reinforcing fiber sheet used in this example.

FIG. 6 is an explanatory diagram showing an example of a method for manufacturing the unidirectional reinforcing fiber sheet in FIG.

[Explanation of symbols]

1 Unidirectional Reinforcement Fiber Sheet (Reinforcement Fiber Composite Repair Sheet) 4 Reinforcement Fiber 20 Ruts 22 Ruts in Ruts 24 Filler 26 Epoxy Resin

Claims (2)

[Claims] 1. A method for repairing a rut formed by running a vehicle or an aircraft, which comprises filling a filling material in a recessed portion of the rut, flattening the surface, and then reinforced the composite reinforcing fiber composite sheet on the surface thereof. The arranging direction of the reinforcing fibers which are the constituent elements of the fiber composite repair sheet is 90 ° ± 45 ° with respect to the longitudinal direction of the rut.
A method for repairing a rut, which is characterized in that it is applied so that it is oriented in the same direction. 2. The repair method according to claim 1, wherein after the reinforcing fiber composite repair sheet is applied and applied, it is covered with sand as a slip stopper for the applied surface.