JPH05163703A - Pavement of road - Google Patents

Abstract

PURPOSE:To prevent the scattering of aggregate by a method in which a sheet form having a punched pattern is placed on the surface of a water-permeable asphalt pavement containing aggregate. CONSTITUTION:On the surface of a water-permeable asphalt pavement 1 containing a granular aggregate 4 such as sand, a plastic sheet form 3 having a punched pattern space 5 is placed. The surface of the plastic form 3 is coated with a water impermeable reinforcing material such as epoxy resin to fill the voids of the aggregate 4 with the reinforcing material. Afterwards, the forming part 3 is removed to expose partly the surface of the aggregate 4 to the surface of the asphalt layer 1. Since the scattering of the aggregate 4 can be prevented, the life of the pavement can be lengthened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paved road, particularly a permeable asphalt road.

[0002]

2. Description of the Related Art Roads have conventionally been paved with asphalt. This is to lay a mixture of asphalt and aggregate (pebbles) on the surface of the road. Since the asphalt component itself does not permeate water, the entire pavement surface does not permeate water and either accumulates on the surface or flows into the gutter. However, when rainwater stays on the road surface, it forms a film, which may lead to a slip accident of the vehicle and is extremely dangerous. In addition, since water did not permeate downward and flowed downstream from the gutter, groundwater decreased and ground subsidence occurred. In addition, the reduction of groundwater is adversely affecting the surrounding plants.

Therefore, so-called water-permeable asphalt has been recommended so that the paved surface has water permeability, absorbs rainwater, and does not form a film on the surface. This is configured such that the asphalt component is reduced, the aggregates are point-bonded to each other, a gap is provided, and water permeates between them.

However, in this method, as shown in FIG. 3, since the aggregate 11 itself is adhered and fixed only at the point 12, the aggregate is separated on a heavy roadway or the like, and the aggregate is separated by a tire or the like. It is often scattered as a result, and as a result, the portion becomes a recessed portion. Further, once the concave portion is formed, the scattering of the edge portion is further accelerated. Therefore, the road must be repaired frequently (every year or once every two years). Not only will it cause traffic jams due to traffic interruptions, but also the costs will be considerable.

In order to eliminate such drawbacks, for the purpose of strengthening the surface of the water-permeable asphalt pavement, a resin (mixed with aggregate) is applied to coat the resin layer 13 as shown in FIG.
It is also possible to provide (resin layer addition method). If the resin layer 13 is made water permeable, the aggregate of the asphalt portion is firmly fixed while ensuring water permeability.

[0006]

However, in this resin layer addition method, although the separation of the aggregate is less than that of the asphalt portion, delamination between the resin layer and the asphalt surface,
There are drawbacks such as cracking, dust accumulation, and low wear resistance. Of course, there are methods such as delamination between the resin layer and the asphalt layer and increasing the amount of adhesive between them in order to improve wear resistance, but this is not preferable because the water permeability is drastically reduced. After all, strong and long-lasting water-permeable asphalt pavements have not emerged at the present time, and therefore water-permeable asphalt is preferable but not sufficiently implemented.

[0007]

[Means for Solving the Problems] In view of the current situation,
The present inventor has completed the method of the present invention as a result of earnest research, and is characterized in that a mold member is placed on the surface of a water-permeable asphalt pavement, and a non-water-permeable reinforcing material is placed thereon. The point is to fill and coat the gap of the aggregate on the asphalt pavement surface, and then remove the mold member.

Here, the water-permeable asphalt is generally called a water-permeable asphalt, and does not need to be special. The aggregate on the asphalt surface is mixed with the asphalt, and it is always included in general asphalt.

The mold member is a so-called pattern paper, which is used to expose and apply or paint a pattern, and express the pattern by a penetrating portion (usually punching) and a remaining portion. . For example, one sheet is punched into a brick shape (brick pile pattern) to leave the joints. Instead of punching out one sheet as described above, several sheets may be placed on the surface to be constructed and used as the mold member on the spot. For example, a plurality of ribbon-shaped tapes (may be one) may be placed.
It can be used for striped patterns. Since the pattern of this mold member can be freely selected, it may be determined according to the use of the road or pavement surface to be used.

Further, the mold member may be used multiple times. That is, the method is such that the mold member is once placed and applied, the first mold member is removed, the second application is performed, and then the second mold member is removed.

The mold member may be made of any material, but a thin plastic sheet or film is preferable.
The thickness of the asphalt is the same as that of the surface of the asphalt, so that the thickness is preferably thin and normally 0.05 to 0.5 mm is suitable. In addition, it is preferable that an adhesive is applied to the back surface so that it can be easily placed and fixed, and release paper is attached for handling before placing.

The water-impermeable reinforcing material is usually a resin (epoxy, acrylic, etc.) that is impermeable to water.
Of course, ordinary resins do not need to be special because they do not have water permeability. Further, an aggregate may be mixed with this resin. The aggregate referred to here may be not only small stones, sand, gravel, etc., but also inorganic particles such as crushed ceramics. The size is preferably about 0.1 to 0.5 mm. Colorants such as various pigments are mixed in the resin in order to reveal the pattern. Of course, it is possible to understand to some extent whether or not it is applied without doing such a special thing. Also, it is not necessary from a viewpoint other than aesthetics.

When resin and pebbles with a particle size of about 0.3 mm are used as the aggregate, the ratio of aggregate: resin is the weight ratio,
About 9: 1 to 7: 3 is preferable.

The stone gaps on the asphalt surface are the gaps between a large number of pebbles as aggregates of the asphalt pavement described above. It is the gist of the present invention that one of the novel parts is to fill the filler only in this gap and expose the aggregate of the asphalt layer to the surface. Of course, the portion covered with the mold member is not filled with the reinforcing material, so that the asphalt pavement remains. As described above, since the mold member portion is not filled, the water permeability of the portion is not lost, and the water permeability required by the road is secured. In addition, the asphalt aggregate is sufficiently reinforced in other areas, and stones etc. are not scattered.

Further, even in the portion filled with the reinforcing material, since the thickness is constant from the surface, the water permeability is not lost in the lower layer portion, and in such a portion, the water also moves in the horizontal direction. To do. Therefore, the water that has entered from the water-permeable portion of the surface can immediately spread laterally, and there is no concern that the water permeability is low and water does not penetrate.

Further, since another layer is not added to the asphalt surface, delamination does not occur. The method of filling and coating is not particularly limited, but coating is performed by using a trowel-like or road finisher to fill the gaps in the stone of the asphalt surface layer, and at the same time, scraping off with the stone head. Good to do. The filling depth (thickness) may be about one layer of the aggregate, as long as it does not scatter the asphalt aggregate, but it may be filled more deeply.

Since the method of the present invention is applied to the surface of asphalt, it can be easily applied and reinforced on an existing pavement that has already been installed.

In addition to the practical merits described above, it is possible to meet recent demands for improving aesthetics. This is because the mold member is used, and the shape of the portion to be filled and coated can be any shape.

[0019]

EXAMPLE FIG. 1 is a process diagram of carrying out the method of the present invention, in which a reinforcing material 2 is applied to an asphalt pavement surface 1. First of all, asphalt pavement surface 1
The mold member 3 is placed on top (FIG. 1 (a)). Next, the reinforcing material 2 is applied to the surface. At this time, the reinforcing material 2 is filled in the gap 5 of the asphalt aggregate 4 with a smoothing tool such as a trowel and the surface is evenly applied. FIG. 1B shows the process of smoothing. FIG. 1C shows a state where the coating is completed and the mold member is removed. It can be seen that the reinforcing material 2 barely extends above the level of the asphalt surface.
This completes the construction. As you can see from this figure,
In order to clarify the design, the mold member 3 should be thin. Finally, when the mold member 3 is peeled off, the reinforcing material 2 remains only in the punched portion to form a pattern. Larger patterns are better because there are voids on the surface.

FIG. 2 schematically shows the flow of water after the method of the present invention is applied. The hatched portion 6 in the figure is the portion filled with the reinforcing material 2. Of course, there is no water permeability in this part. Rainwater, etc., flows into the ground from a water-permeable portion as indicated by the arrow on the surface. When it reaches below the filling layer 6, since it has water permeability over the entire range from that point onward, the water diffuses in all directions. As a result, the water absorption capacity of the road is sufficiently secured.

[0021]

The method of the present invention has the following advantages. Since the resin-made reinforcing material is partially filled in the gaps between the aggregates on the asphalt surface, the aggregates are reinforced and are not scattered or scattered. Therefore, the pavement surface will last longer and the frequency of repair work will be significantly reduced. Since the water permeability is not impaired, slip accidents can be prevented. Moreover, there is no problem of groundwater reduction. It can be easily applied to existing paved roads. It is possible to easily add a pattern according to the request.

[Brief description of drawings]

FIG. 1 is a process sectional view showing an example of a construction method of the present invention.

FIG. 2 is a partial cross-sectional view showing a state after construction of the present invention.

FIG. 3 is a cross-sectional view showing a conventional example.

FIG. 4 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

 1 Asphalt surface 2 Reinforcing material 3 Type member 4 Asphalt aggregate 5 Void 6 Filled layer

Claims (1)

[Claims] 1. A mold member is placed on the surface of a water-permeable asphalt pavement, and a non-water-permeable reinforcing material is applied to the gap between the aggregates on the surface of the asphalt pavement from above, and then the mold member is removed. A method of paving a road, which is characterized in that