JP2001032204A - Antifreezing surface treated layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economical antifreezing surface treated layer by scattering a rubber material onto an under coat having adhesion on a paved road surface and integrally binding the rubber material and a filler filling clearances in the rubber material together by means of a binder. SOLUTION: On the surface of a paved road surface 1, an cold asphalt emulsion is sprinkled for forming a predetermined under coat 5. Then, from the upper side of the under coat 5, rubber materials 7 with a grain size of about 3 mm are spread substantially uniformly so as not to overlap with each other vertically. After the cold asphalt emulsion serving as a binder 11 is spread, sand as a filler 9 filling clearances between the rubber materials 7 is scattered. After scattering, water in the asphalt emulsion is evaporated with the lapse of time, so that the rubber material 7 and the sand as the filler 9 are bound together firmly. In this way, no layer thicker than the grain size of the rubber material 7 is formed, so that a thin surface treated layer suitable for suppressing freezing can be provided, and an amount of material and a construction cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment layer for suppressing freezing which is suitable for cold regions.

[0002]

2. Description of the Related Art Generally, when the road surface freezes, the braking capacity of the vehicle is greatly reduced, which may lead to an accident or the like. In cold regions, measures are taken to prevent the road surface from freezing. ing. Specifically, there are countermeasures such as keeping water flowing on the road surface, spraying a deicing agent, or warming the road surface by road heating.

[0003]

All of the conventional countermeasures require a great deal of maintenance and management, and have problems in terms of maintenance cost and management.

Accordingly, an object of the present invention is to provide a surface treatment layer for suppressing freezing which is excellent in terms of maintenance / management and construction costs.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a base coat which is sprayed on a pavement surface and has an adhesive property, and which overlaps the base coat. A rubber material having a small diameter based on around 3 mm and a filler filling the space between the rubber materials are provided, and the rubber material and the filler are integrally joined by a binder material.

[0006] Thus, the thin surface treatment layer requires less material and reduces the construction cost, and it is only necessary to periodically manage the construction after the completion of the construction.

On the other hand, the surface treatment layer is deformed by the tire load when the vehicle passes, and the ice film on the frozen surface is broken by the deformation, and the ice film on the frozen surface is repeatedly peeled off.

According to a second aspect of the present invention, sand, powder, or crushed stone of No. 7 or less is used as the filler.

As a result, peeling of the rubber material is prevented, and a stable state of the surface treatment layer can be obtained for a long period of time.

According to a third aspect of the present invention, a bituminous material such as asphalt emulsion or a synthetic resin material such as urethane is used as the binder material.

As a result, the construction cost can be reduced, and especially, in the case of a synthetic resin material, the durability is excellent.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a pavement surface, and 3 denotes a surface treatment layer.

The pavement surface 1 is an asphalt pavement surface, but may be a concrete pavement surface.

The surface treatment layer 3 comprises an undercoat 5 having an adhesive property and a rubber material 7 having a small diameter of about 3 mm.
And a filler 9 filling the space between the rubber members 7. The rubber member 7 and the filler 9 have a thin and thin layer structure in which the layers are integrally joined by a binder material 11.

The undercoat 5 sprays room-temperature asphalt emulsion on the pavement surface 1 and causes water to fly over time so that an adhesive film layer can be obtained.

If the rubber material 7 is a resilient material,
Either natural rubber or synthetic rubber may be used. From the viewpoint of recycling, it is preferable to use a crushed old tire or the like.

The particle size of the rubber material 7 is preferably about 3 mm.

It is also possible to mix a part having a size of about 13 mm.

Filler 9 for filling between rubber members 7
Is most preferably sand, but powder such as stone powder, or 7
It may be crushed stone of the number below.

As the binder material 11 for integrally connecting the rubber material 7 and the filler material 9, a bituminous material is used. As the bituminous material, there are asphalt, asphalt emulsion, and cutback asphalt. Preferably, a modified asphalt emulsion to which a modifier is added is suitable.

In this case, a durable synthetic resin material such as urethane resin can be used instead of the asphalt emulsion.

Next, the construction method will be described.

As shown in FIG. 2, an asphalt emulsion at normal temperature is sprayed on the surface of a new or existing pavement 1 to form a predetermined base coat 5. At this time, as the water flies over time, an adhesive film layer can be obtained.

Next, the rubber material 7 is sprinkled substantially evenly from above the base coat 5 so as not to overlap. In this case, the surface of the rubber material 7 is subjected to a silane coupling treatment, so that a strong adhesion state to the base coat 5 is ensured. In addition, you may employ | adopt the processing means which uses a cationic surfactant or slaked lime. Thereby, peeling of the rubber material 7 from the base coat 5 can be reliably prevented.

Next, after the asphalt emulsion at room temperature serving as the binder material 11 is sprayed, sand serving as the filler 9 is sprayed so as to fill the space between the rubber materials 7. After the spraying, the water in the asphalt emulsion flies over time, and the rubber material 7 and the sand that becomes the filler 9 are firmly bonded. At this time, the surface layer becomes a layer having a particle size substantially equal to that of the rubber material 7, and a very thin surface treatment layer 3 can be obtained.

When a powder such as stone powder is used as the filler 9 as shown in FIG. 3, after the rubber material 7 is sprayed, the binder material 11 mixed with the powder and stirred and mixed together is sprayed. Procedure.

When crushed stones of size 7 or less are used as the filler 9 as shown in FIG. 4, after the rubber material 7 is scattered, crushed stones 13 are scattered so as to fill the space between the rubber materials 7. And
Subsequently, the asphalt dairy material serving as the binder material 11 is sprayed.

On the other hand, the surface treatment layer 3 thus configured
In the above, the surface treatment layer 3 is deformed by the tire load W when the vehicle passes, and the ice film on the frozen surface is destroyed by the deformation. In particular, it has been proved by experiments that if the surface treatment layer 3 is at least 1 mm or more, the destruction of the ice film is surely performed. From the viewpoint of suppressing freezing, it is possible to sufficiently cope with the thin surface treatment layer 3. I understood.

Further, the rubber material 7 having a small particle size is
And the binder material 11 ensure a strong bonding state, and maintain a stable state for a long period of time.

[0031]

As described above, according to the surface treatment layer for suppressing freezing of the present invention, since a layer is not formed greatly exceeding the particle diameter of the rubber material, a thin surface treatment suitable for suppressing freezing is achieved. Layers can be obtained. In addition, the amount of material is small and the construction cost is very favorable. Further, the surface treatment layer can be stably maintained over a long period of time.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a part of a surface treatment layer for freezing suppression according to the present invention.

FIG. 2 is an explanatory view showing a procedure for applying a surface treatment layer for freeze suppression.

FIG. 3 is an explanatory view similar to FIG. 1 using powder as a filler.

FIG. 4 is an explanatory view similar to FIG. 1 using crushed stones of No. 7 or less as a filler.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pavement surface 5 Base coat 7 Rubber material 9 Filler 11 Binder material

Continued on the front page (72) Inventor Oiso Nakahara 1-6-5 Shimbashi, Minato-ku, Tokyo Japan Road F-term (reference) 2D051 AA08 AE05 AF01 AG01 AG03 AG11 EA01 EA06 EB05 EB06

Claims (3)

[Claims] 1. A base coat having adhesiveness, which is sprayed on a pavement surface, a rubber material having a small diameter based on about 1 to 8 mm, and a rubber material, which is sprayed without overlapping on the base coat, and a rubber material and a rubber. A surface treatment layer for freeze suppression, characterized by having a filler filling the space between the materials, and wherein the rubber material and the filler are integrally joined by a binder material. 2. The surface treatment layer for freezing suppression according to claim 1, wherein the filler is sand, powder, or crushed stone of No. 7 or less. 3. The surface treatment layer according to claim 1, wherein the binder material is a bituminous material or a synthetic resin material.