JP2000096509A - Draining material with built-in heating element and road structure utilizing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a road-surface material having draining properties while preventing retention of melted-snow water by using the road-surface material. SOLUTION: Snow is melted by a heating element while preventing freezing, and itself is brought to a water-permeable state, and used as a draining material P obviating the generation of retention water. The draining material P is employed for a road surface, a shoulder, etc., and drainage at the places of the road surface, the shoulder, etc., is promoted and freezing is averted. In an asphalt road, the draining materials P are installed to the shoulder and lower end sections of a road-heater installing section R, in which the surface heating elements 12 are interposed on a sloped road surface such as a slope, and water catchment holes 14 communicated with a drain ditch (a side ditch) 13 are formed at the proper places of the draining materials (layers) P. Accordingly, since the road-heater installing section R is formed in a down-grade towards the shoulder from a center melted-snow water is collected to the shoulder and the lower end, freezing is prevented by the heat generation of the draining materials P because the draining materials P are mounted to the shoulder and the lower end, and melted-snow water is introduced smoothly to the drain ditch 13 by water permeability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the prevention of freezing of a drainage portion and the prevention of the peripheral road surface when draining snowmelt water at the end of a road heater installation section and collecting / draining a drainable pavement shoulder in a snowy cold region. The present invention relates to a drainage material used as a road material for preventing freezing.

[0002]

2. Description of the Related Art In winter snowfall areas, road heating is installed on slope roads (slope roads), intersections, curves, near tunnel entrances where slippage is likely to occur. The road is a road in which the gradient in almost all directions is compounded, such as inclining the road surface from the center toward both sides.

[0003] Since the road heating is generally performed within a minimum necessary range, snow melt water permeates the snow at the lower end of each slope, and consolidation by a tire or cooling at night promotes formation of a frozen road surface. Will be.

[0004] In addition, in the drainage pavement, which has been increasing in recent years, there is a problem that the vicinity of the drainage hole to the side gutter freezes and drainage becomes impossible. If the water cannot be drained, snowmelt water will remain in the pavement, and the road heating equipment will continue to operate while detecting moisture. Also, if the accumulated water freezes, the pavement may be adversely affected. However, no countermeasures have been taken at present.

An object of the present invention is to provide a drainage material that can be used as a road surface or the like under the above-mentioned circumstances, thereby preventing the snowmelt water from staying.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention firstly prevents snow from melting and preventing freezing by making a heating element, and making itself permeable to prevent the generation of accumulated water. It was a drainage material.

Next, the present invention uses such a drainage material on a road surface and a road shoulder to promote drainage at the place to prevent freezing.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As the drainage material, a configuration in which a heating element is incorporated in porous concrete having water permeability can be adopted. The porous concrete is obtained by hardening an aggregate with a cement or a resin so as to have water permeability and appropriately giving a bending strength with a reinforcing bar, glass fiber, organic fiber or the like. The heating element is a linear heater or a ribbon heater such as a metal wire, a carbon fiber, a stranded wire of an ultrafine metal fiber and a synthetic fiber, or a device using a self-temperature control type resin. Provide connection terminals on the outer surface of the porous concrete so that it can be used.

A road surface such as a sidewalk can be formed by the drainage material, and the drainage material is installed along the entire length of the lower end of the road heating equipment road surface, the shoulder, or both, and a part of the drainage material layer is drained. A road structure communicating with the groove can be adopted.

[0010] In this case, the snow is melted and the snowmelt water is not re-frozen, and the ground and the drainage ditch (side ditch) are formed.
Can be eliminated.

[0011]

1 and 2 show an embodiment of a drainage material P. In this embodiment, a linear heater 20 is incorporated into a rectangular solid porous concrete 10 having a required length. The power can be supplied to the power supply via the connector 30. The porous concrete 10 is obtained by hardening an aggregate with cement, interposing a reinforcing bar and a glass fiber 11, and has an effective water permeability. In addition, the linear heater 20
The heating fiber 21 made of carbon is covered with a heat-resistant resin 22.

FIGS. 3 to 5 show examples of use of the drainage material P. FIGS. 3 and 4 show examples of use (an embodiment of the road structure).
On an asphalt road, drainage material P is installed on the shoulder and lower end of a road heater installation section R with a surface heating element 12 interposed on a slope such as a slope, and drainage grooves (layers) are provided at appropriate places on the drainage material (layer) P. A water collecting hole 14 communicating with the side groove 13 is formed. In the figure, G is the road ground.

In this embodiment, since the road heater installation section R has a downward slope from the center toward the road shoulder, snowmelt water collects at the road shoulder and the lower end, and a drainage material P is installed there. Therefore, freezing is prevented by the heat generation, and the snow melting water is smoothly guided to the drain 13 by water permeability.

FIG. 5 shows a usage example in which this drainage material P is installed as a sidewalk tile, and a snow S
Even if the snow falls, the heat is prevented from freezing, and the snow-melting water permeates the ground G as shown by the arrow due to water permeability.
In this case, the drainage material P has a shape, a size, and a pattern suitable for a sidewalk surface (paved road surface), for example, a tile shape.

[0015]

By using the drainage material according to the present invention, it is possible to prevent freezing at the lower end of the road surface where the road heating is installed, and the traffic of vehicles and people becomes safer. In addition, it is possible to prevent the drainage failure due to freezing of the roadside drainage portion of the drainage pavement, and it is possible to reduce waste of energy for road heating.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of one embodiment of a drainage material.

FIG. 2 is a sectional view of the embodiment.

FIG. 3 is a cutaway perspective view of a main part of one embodiment of a road structure.

FIG. 4 is a partial sectional view of the embodiment.

FIG. 5 is a sectional view of a main part of another embodiment.

[Description of Signs] G Ground P Drainage Material R Road Heater Installation Section 10 Porous Concrete 13 Drainage Ditch 14 Water Collection Hole 20 Linear Heater

Claims (3)

[Claims] 1. Porous concrete 10 having water permeability
A heating element built-in drainage material in which the heating element 20 is incorporated. 2. A road surface structure formed by the drainage material P according to claim 1. 3. A lower end of a road heating installation road surface R,
The drainage material P according to claim 1, which extends over the entire length of the road shoulder or both.
A road structure in which a part of the drainage layer communicates with the drain 13.