JPH05132905A - Paving method for road - Google Patents

Abstract

PURPOSE:To form a strong and durable water-permeable asphalt pavement by a method in which a mixed filler composed of a specific grain size of aggregate and a resin is packed into the apertures among the stones of asphalt-paved surface. CONSTITUTION:Inorganic granular materials such as pebble, sand, gravel, and crushed ceramics having a grain size of 0.1mm or more are mixed with an epoxy resin to form a filler 2. The filler 2 is packed into the apertures 5 among aggregates 4 of an asphalt-paved surface 1 by a leveler 3 in such a way as to expose the surfaces of the aggregates 4 to the outside. Since the aggregates 4 are strongly fixed, no interlayer separation occurs without damaging the water permeability as a whole. The frequency of repairing work can thus be greatly reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road paving method.

[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, a strong and long-lasting water-permeable asphalt pavement has not yet emerged, and therefore, although water-permeable asphalt is preferred, it has not been fully 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 the surface of a water-permeable asphalt pavement is filled with a filler in which an aggregate and a resin are mixed as a stone on the asphalt pavement surface. The point is to fill and coat the gap.

Here, the water-permeable asphalt is generally called a water-permeable asphalt, and does not need to be special. The aggregate 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. This is because if it is finer than this, water permeability is reduced, and if it is larger than this, it is not possible to fill the voids between the aggregates of the water-permeable asphalt.

Epoxy resin is preferable as the resin, but the resin is not limited to this and may be a resin that is generally used for spraying wall surfaces or surface treatment of roads.

The filler is a mixture of the above-mentioned aggregate and resin, and the mixing ratio should be determined according to the size of the aggregate and the kind of resin, and is not particularly limited. However, there is no doubt that water permeability should be ensured to some extent and that the gap between stones on the surface of the asphalt layer can be filled and workability should be considered. It goes without saying that the resin may be mixed with what should be usually mixed in addition to the aggregate. For example, a pigment or the like.

When pebbles with a particle size of about 0.3 mm are used as resin and 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 small stones as the aggregate of the asphalt pavement described above. It is the gist of the present invention and a novel part that the filler is filled only in this gap and the aggregate of the asphalt layer is also exposed on the surface. As a result, the aggregate in the asphalt pavement is firmly fixed, and since it has water permeability itself, the water permeability as a whole is not impaired. Moreover, 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.

On recent roads, there is also a demand for patterning the surface of the road because of the problem of aesthetics of the area. In such a case, the present invention enables it very easily. First, a die member (paper pattern) in which a shape desired to be expressed as a pattern is laid on the road surface, and the filler of the present invention (a color different from that of the existing pavement surface) is applied on it. When the mold member is peeled off after the completion of coating, the pattern according to the mold member remains. In this case, the portion covered with the mold member is not filled (applied) with the filler, but since it is a small portion, there is almost no problem. By doing so, it is possible to easily form a road that is excellent in aesthetics and in which pebbles and the like are prevented from being dispersed.

[0015]

EXAMPLE FIG. 1 (a) is a process diagram for carrying out the method of the present invention, in which a filler 2 is applied to an asphalt pavement surface 1. The gap 5 of the aggregate 4 is filled with the filler 2 by a smoothing tool 3 (such as a trowel), and the surface is evenly applied. FIG. 1B shows a state where the coating is completed. From the level of the asphalt surface, you can see that it barely goes up. The construction is now complete.

FIG. 2 shows an example in which the mold member 6 is used. First, as shown in FIG. 2A, the mold member 6 is attached to the asphalt surface. From above, see FIG.
Filler 2 is applied as shown in FIG. As can be seen from this figure, in order to clarify the design, the mold member 6 should be thin. Finally, when the mold member 6 is peeled off, the filler 2 remains only in the punched portion to form a pattern. Since there are voids on the surface,
The larger the pattern, the better.

[0017]

The method of the present invention has the following advantages. Since the fillers made of fine-grained aggregate and resin are densely filled in the gaps between the stones on the asphalt surface, the aggregates are dispersed,
There is no scattering. 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. Stones in the asphalt layer are exposed on the surface, and the gaps between the stones are densely filled with a filler that uses fine-grained aggregate, so there is very little dust accumulation and easy cleaning. It can be easily applied to existing paved roads. It is possible to easily add patterns.

[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 process sectional view showing another construction method 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 Filler 3 Coating tool 4 Asphalt aggregate 5 Void 6 Type member

Claims (2)

[Claims] 1. A method of paving a road, characterized in that the surface of a water-permeable asphalt pavement is filled and coated with a filler in which an aggregate and a resin are mixed in a stone gap on the surface of the asphalt pavement. 2. The pavement method for a road according to claim 1, wherein the aggregate is ceramic or stone and has a particle size of 0.1 mm or more and 0.5 mm or less.