JPH08333705A - Antifreezing road block and laying method thereof - Google Patents

Abstract

PURPOSE: To improve the extent of tire braking performance stably at all times regardless of the amount of rainfall by forming a recess groove on the surface of an elastic resin mat being stuck and secured on the surface of a concrete block, and making up a projection top face of the mat into a V-shaped recess structure and a side wall surface of the projection into such a taper structure as opening wide toward the lower part, respectively. CONSTITUTION: A rubber mat 20 is stuck and secured to the surface of a concrete block, constituting a road surface block. Many pieces of recess grooves 21 are formed on a surface of this rubber mat 20. Therefore surface unevenness is easily bent due to body load and tire rotation, and owing to repetition of this bending in the uneven part, any icy block entered in the recess groove 21 is incessantly crushed, so there is no freezing at all. Moreover, since a side wall surface 24 of the projection is formed into a taper structure opening wide downward, the icy block in the recess groove 21 is pushed upward according to the bending of a taper wall surface, the icy block is scattered to the outside of a laying area with the rotation of a tire. Accordingly, the extent of tire braking performance is stably improvable at all times regardless of the amount of rainfall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface block used in a snowfall area for preventing road surface freezing and a method of laying the road surface block.

[0002]

2. Description of the Related Art In a snowy area, the road surface of a vehicle freezes during a severe winter, which causes an accident. For this reason, automobiles run with spiked tires and snow tires, but recently,
Attempts have been made to improve the road surface and increase braking.

This is because the spike tires tend to be prohibited by the regulations due to dust pollution in the early spring, while so-called studless tires (snow tires) have a limited braking ability and the number of accidents during sudden braking increases. Therefore, it is strongly desired to surely enhance the safety in running the vehicle. For this reason, various techniques have been proposed to prevent slipping of tires by providing slit-like irregularities on the asphalt surface or randomly distributing rubber chips on road surfaces such as intersections and slopes.

[0004]

The method of providing slit-like irregularities on the surface of the asphalt is effective when the amount of snowfall is small, but when the snow accumulates on the road surface and freezes, it becomes a complete ice-burn condition. Therefore, it has no meaning in terms of increasing the braking force of studless tires. This is because the snowfall covers the uneven surface and is frozen. In order to increase the braking of the vehicle by such a road surface structure, it is necessary to frequently remove snow or melt the snow by road heating, but in any case, it is costly within the limit of the public budget. There is a limit.

Such a problem cannot be solved even by a method of disposing rubber chips on the surface of asphalt. Rubber chips
This is because when the amount of snowfall is low, it is exposed on the asphalt surface to enhance braking force, but when the amount of snowfall increases and the road surface becomes iceburn, it is buried under the snow and does not function.

Therefore, an object of the present invention is to provide a road surface structure which can always stably improve the winter braking performance of a tire regardless of the amount of snowfall.

[0007]

In order to achieve the above-mentioned objects and achieve the above-mentioned objects, an antifreezing road surface block according to the present invention comprises a concrete block molded in a cubic shape,
An elastic resin mat that is adhesively fixed to the surface of the concrete block is provided, a large number of concave grooves are formed on the surface of the elastic resin mat, and the upper surface of the convex portion of the elastic resin mat has a V-shaped concave structure. On the other hand, the side wall surface of the convex portion has a tapered structure that expands downward.

When laying this block, the upper surface of the convex portion of the elastic resin mat is 10 to 1 from the general road surface.
Lay so that it is located 5 mm below.

[0009]

In the anti-icing road surface block according to the present invention, the elastic resin mat is adhered and fixed to the upper surface of the concrete block molded in a cubic shape. At the time of laying, the elastic resin mat may be arranged in a predetermined area with the mat facing upward. After winter, the block can be turned over to protect the elastic resin surface, which is prone to wear.

A large number of recessed grooves are formed on the surface of the elastic resin mat to prevent the tire from slipping in a braking state. The function of this point is substantially the same as that of the case where slit-like irregularities are formed on the asphalt surface. However, since it is an elastic resin, the surface irregularities are easily bent by the load of the vehicle body and the rotation of the tire.
Due to the repeated bending of the irregularities, the snow in the grooves is constantly crushed and cannot be frozen.

Further, the side wall surface of the convex portion of the elastic resin is tapered so as to expand downward, and the ice and snow in the concave groove is pushed upward according to the bending of the tapered wall surface. The snow pushed up on the upper surface scatters outside the laying area as the tire rotates.

The upper surface of the convex portion of the elastic resin mat has a V-shaped groove structure. This V-shaped groove also prevents snow from adhering. This is because the V-shaped groove constantly bends and deforms due to the weight of the vehicle body and the rotation of the tire, and the crushed snow is thrown out of the laying area by the rotation of the tire. Therefore, in the elastic resin mat according to the present invention, no snow remains even on a day with a large amount of snow, and the uneven surface is exposed throughout the winter to secure the braking force. There is no snow left so ice bans are not possible.

This block is laid so that the upper surface of the convex portion of the elastic resin mat on the surface is located 10 to 15 mm below the general road surface. This is the Hyde board of a snowplow (steel snowplow)
This is to prevent damage due to. The snowplow hide plate
It cuts a hard frozen ice barn and removes snow while pressing it against the road surface.Therefore, if the elastic resin mat is placed at the same height as the general road surface, the adhesive surface between the lower concrete block and the upper resin mat will peel off. To do. Therefore, if the resin mat is lowered from the general road surface, the tip of the snow removal hide plate will not come into contact with it, and peeling of the resin mat can be reliably prevented.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show an example of an antifreezing road surface block according to the present invention. This road block 10
Is a rectangular parallelepiped concrete block 1 as shown in FIG.
A rubber mat 20 is adhered and fixed to the surface of 1. The size of the concrete block 11 is designed so that it can be easily carried, for example, long side 30 cm, short side 15 cm, and vertical 8.5 cm. Adhesion of the rubber mat 20 is
After applying a primer and fitting, a rubber adhesive is applied.

On the surface of the rubber mat 20, as shown in FIG. 3, a wave line is drawn to form a large number of concave grooves (fine grooves).
21 is formed. Further, as shown in FIG. 1, the convex portion 22 has a V groove 23 formed on the upper surface thereof, and the side wall surface 2 of the convex portion 22 is formed.
4 has a taper structure that expands downward.

The dimensions of each of the concave and convex portions (21 to 24) are not particularly limited, but as shown in FIG. 4, the width dimension of the bottom surface of the concave groove is D, the width dimension of the upper surface of the convex portion is U, and the spacing dimension of the upper surface of the convex portion. W,
When the length of the side wall surface 24 of the convex portion (depth of the concave groove) is represented by H and the depth of the V groove 23 on the upper surface of the convex portion is represented by L, for example, D = 3.
mm, U = 7 mm, W = 5 mm, H = 9 mm, L = 3 m
Set to m. Therefore, the width of the base end of the protrusion 22 is 9 m.
The widths of the inclined surfaces of the m and V grooves 23 are 3.5 mm, and the taper of the side wall surface 24 is 1 mm at the upper and lower ends.
Of course, these dimensions can be freely changed in design.

According to this road surface block, snow accumulated on the road surface can be eliminated as follows. Figure 5 is is shown a state where the snow and ice C is attached on the rubber mat 20, the vehicle weight, for deforming bending rubber mat 20, and at the same time the groove 21 inside the icy and snowy C ₂₁ collapses, the convex upper surface Ice and snow C _{22 is} also crushed.

The movements of the ice and snow C at this time occur instantaneously and substantially at the same time. First, the snow C _{22 on} the upper surface is in a state in which a notch (indicated by symbol N) is formed by the V groove 23, and it is easy for the weight of the vehicle body. A crack is generated on the surface and it is instantly damaged. In this state, the convex portion 22 is flexibly deformed, and the ice and snow C ₂₁ in the concave portion is crushed, and at the same time, the ice and snow C ₂₁ slides on the tapered surface (24) of the convex portion 22 and is pushed out to the upper surface of the convex portion. The pushed snow is blown outside the area as the tire rotates. This is repeated, and the rubber mat 20 is kept exposed at the place where the road surface block 10 is laid throughout the winter, and the braking ability of the tire is maximized. Since no ice burn is formed at a portion of the road surface block 10, a safe road for pedestrians can be provided.

When the road surface block 10 is laid at an intersection or a slope, a slip accident can be effectively prevented. FIG. 6 shows an example in which the road surface block 10 is laid at an intersection. Since the color of the rubber mat 20 can be freely set, it is desirable that the white rubber mat T and the black rubber mat K are alternately used in the pedestrian crossing part and the same color as the asphalt is used in the general road surface part.
Further, in order to inform the driver that the anti-freezing block (10) is arranged, a black rubber mat BK is laid in a belt-like shape on the tire ground contact portion as indicated by reference symbol R, and a stop line is indicated by reference symbol BW. You may lay it in such a white belt shape.

When laying the road surface block 10, FIG.
As shown in, the rubber mat 20 is laid so that the upper surface thereof is slightly lowered from the general road surface P. It is desirable that the step Q be, for example, about 10 mm. This is because if the step Q becomes too large, it will hinder the running of the vehicle.

This step Q can prevent the rubber mat 20 from being damaged by the snow plow. Since the snow-removing hide plate made of steel plate bites into the snow on the road surface and moves forward, if the rubber mat 20 is arranged at the same height as the general road surface P, the rubber mat will be peeled off by the pressurizing forward movement of the hide plate. However, since the hide plate is set at substantially the same height position as the general road surface so as not to damage the general road surface P, the step Q does not make contact with the rubber mat 20 and therefore the rubber mat 20 is surely peeled off when damaged. Can be prevented.

A rubber mat 20 made of a snow-hide plate
In order to prevent the damage and peeling of the road block more reliably, as shown in FIG. 8, a concrete block 12 having no rubber mat may be arranged in the laying intermediate part of the road surface block 10. If such a concrete block 12 is provided, even if the snow plow or the hide plate vibrates up and down, the hide plate will be the concrete block 1
This is because it is not possible to contact the rubber mat 20 by being suppressed to 2.

The elastic resin adhered and fixed to the upper surface of the road surface block may be of any type as long as it is a flexible material that can be flexibly deformed and restored to its original shape by passage of a general vehicle. It is also possible to reduce the manufacturing cost of this block by mixing a proper amount (for example, about 50% or less) of crushed chips of a waste tire as a raw material of the rubber mat to mold the mat. Further, the concavo-convex pattern drawn on the surface is not limited to the corrugated shape, and may be a straight line, a concentric circle, a similar polygon, or the like. Further, it is desirable that the road surface block according to the present invention is turned over in the summer to expose the concrete surface and prevent the elastic resin surface from being damaged. Since each block has a dimensional weight that can be carried, the laying work is very simple and the reversing work is easy, and the work is completed in a short time, not only on the new road surface but also on the existing road surface.

Further, uneven portions (21-2
Although it has been already described that the dimensions of each part of 4) can be changed in various ways, the following changes can be made, for example, depending on the installation location of the block. That is, in the case of laying on a road with a large amount of traffic, especially on a trunk road where large vehicles are heavy,
As shown in, the width dimension U of the upper surface of the convex portion is set to 19 mm, and the convex portion 32 is set wide. With such a mat 30, it is possible to increase the withstand load strength, and the mat (particularly the convex portion 32) is damaged or deteriorated even on a road where a vehicle such as a truck, a dump truck, or a bus that has a large vehicle weight frequently passes. Can be prevented.

Further, as a block for laying on a sidewalk or in a park, as shown in FIG. 10, the depth dimension H of the groove is, for example, 6
It is also possible to form a shallow groove type mat 40 having a size of mm. In this case, unlike the block for the road, the concrete block on the lower surface of the mat may be omitted and the rubber mat 40 may be directly laid on the roadbed.
This is because it is not necessary to support a large load like an automobile vehicle.

Any of these rubber mats 30, 40
Even if it is present, the material structure made of elastic resin, the V-shaped concave grooves 33 and 43 on the upper surface of the convex portion, and the tapered surface 3 on the side wall surface of the convex portion.
Since it has the basic structure of the present invention such as 4, 44, it can perform the same snow removal function as the block 10 of the above-mentioned embodiment, and it is possible to secure the braking force of the road surface by exposing the uneven surface throughout the winter season. Is.

Further, since the antifreezing road surface formed according to the above-mentioned embodiment is constructed by laying blocks of a size that can be carried around, the rubber mat (convex portion, etc.) on the surface of the concrete block has been worn due to long-term use. In this case, it is possible to easily repair the anti-icing road surface by replacing the worn block among the laid blocks. In this repair, if only the rubber mat is replaced and the concrete block is continuously used, the repair cost can be reduced as compared with replacing the entire road surface block. Further, a used rubber mat may be crushed and reused as a raw material of the rubber mat to be replaced.

[0028]

As described above, according to the road surface block of the present invention, the braking ability of the tire can be constantly enhanced regardless of the amount of snowfall.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of an uneven structure of an elastic resin mat according to the present invention.

FIG. 2 is a perspective view illustrating the structure of a road surface block according to the present invention.

FIG. 3 is a plan view illustrating an uneven pattern of the elastic resin mat according to the present invention.

FIG. 4 is a diagram showing an example of dimensions of the concavo-convex structure shown in FIG.

FIG. 5 is a diagram illustrating a state in which ice and snow are attached to an elastic resin mat.

FIG. 6 is a diagram illustrating a laying pattern of a road surface block according to the present invention.

FIG. 7 is a diagram showing an example of a laid state of a road surface block according to the present invention.

FIG. 8 is a diagram showing a second laid state example of a road surface block according to the present invention.

FIG. 9 is a cross-sectional view showing another example of the uneven structure of the elastic resin mat according to the present invention.

FIG. 10 is a sectional view showing still another example of the uneven structure of the elastic resin mat according to the present invention.

[Explanation of symbols]

 10 Road surface block 11 Concrete block 20, 30, 40 Rubber mat 21, 31, 41 Concave groove (narrow groove) 22, 32, 42 Convex part 23, 33, 43 V groove 24, 34, 44 Side wall surface C ice snow

Claims (2)

[Claims] 1. A cubic block-shaped concrete block, and an elastic resin mat that is adhesively fixed to the surface of the concrete block. A large number of concave grooves are formed on the surface of the elastic resin mat, and the elastic resin is formed. An antifreezing road surface block, wherein the upper surface of the convex portion of the mat has a V-shaped concave structure, and the side wall surface of the convex portion has a taper structure that expands downward. 2. The anti-icing road surface block according to claim 1, wherein the anti-icing road surface block is laid so that the upper surface of the convex portion of the elastic resin mat is located 10 to 15 mm below the general road surface. Laying method.