JP3779359B2 - Rubber sheet for road and anti-slip road surface - Google Patents

Description

【００５２】
このゴム板を路床に、ボルト頭部がゴム板表面に露出しないようにゴム板に凹部を設けてボルトで固定し、試験路面を得た。
（耐スリップ性試験）
試験路面の表面に多量の水を撒き、ウエットの状態を作った。この路面上をスタッドレスタイヤ（１８５／７０Ｒ−１３）を装着した排気量１５００ｃｃの乗用車を用いて、時速１０ｋｍ／ｈにおけるフルロックブレーキ制御の距離を測定した。比較例１の制動距離を１００とし、指数評価を行った。指数が小さい程、性能が良好であると判断する。
【００５３】
この試験を初期に行って初期特性を評価した。その後、ゴム板表面が２ｍｍ摩耗した状態で同様の試験を行って、効果の持続性を評価した。結果を下記表２に示す。
【００５４】
（実施例１）
前記表１の配合のゴム材を用いて、化学エッチングによって凹１６０μｍ、凸６０μｍ、深さ５０μｍの溝を形成したモールド型を用いて、ゴム板表面に幅（Ｗ_t ）１６０μｍ、リブ間隔（Ｗ_b ）６０μｍ、高さ（ｈ）５０μｍの微細リブを形成したゴム板を形成した。これをリブの方向が車両の走行方向と平行になるように路床に固定して試験路面を得た。
【００５５】
（実施例２）
前記表１の配合のゴム材に直径５０μｍ、長さ１ｍｍのポリエステル短繊維を混練り時に１０重量部配合して複合化した繊維複合材料を用いた。モールドに切削加工によって凹４００μｍ、凸２３０μｍ、深さ２５０μｍの溝を形成し、そのモールド型を用いてゴム板表面に幅（Ｗ_t ）４００μｍ、リブ間隔（Ｗ_b ）２３０μｍ、高さ（ｈ）２５０μｍの微細リブを形成したゴム板を形成した。これを実施例１と同様に路床に固定して試験路面を得た。
【００５６】
（実施例３）
前記実施例２で使用した繊維複合材料に、さらに発泡剤としてジニトロソペンタメチレンテトラミン２．５重量部及び発泡助剤として尿素２．５重量部を配合して、発泡率２０％、発泡径約５０μｍの発泡繊維複合材料を用いた他は、実施例１と同様の方法でゴム板を作成し、これを実施例１と同様に路床に固定して試験路面を得た。
【００５７】
（比較例１）
前記表１の配合のゴム材を用い、平板なモールドを用いて微細リブを形成しなかった他は、実施例１と同様にしてゴム板を作成し、路床に固定して試験路面を得た。
【００５８】
【表２】

【００５９】
表２に明らかなように、本発明の道路用ゴム板を用いた路面はいずれも、ウエット時の耐スリップ性に優れていた。さらに、ゴム材として、繊維複合材料や発泡させた繊維複合材料を用いた実施例２及び３の道路用ゴム板は、表面の摩耗がすすんだ後もなお、優れた耐スリップ性が持続することがわかった。
【００６０】
【発明の効果】
本発明の道路用ゴム板は、前記構成としたため、冬期の路面凍結時及び降雨時などのウエット時にも優れた耐スリップ性能を示す。また。該道路用ゴム板を用いた、耐スリップ路面は、ウエット時においても優れた耐スリップ防止性を示す。
【図面の簡単な説明】
【図１】本発明の道路用ゴム板の例を示す斜視図である。
【図２】図１に示す道路用ゴム板の２−２における拡大断面図である。
【図３】表面にマクロパターンを形成した道路用ゴム板の例を示す斜視図である。
【図４】図１の道路用ゴム板を埋設した耐スリップ路面の例を示す断面図である。
【符号の説明】
１０ 道路用ゴム板
１２ 微細リブ
１６ 道路用ゴム板
１８ 舗装面
２０ 路床[0001]
BACKGROUND OF THE INVENTION
The present invention increases the coefficient of friction between the rubber plate for roads, specifically the road surface and the tires of automobiles, and has an excellent anti-slip effect in cold regions, and also has a high anti-slip effect even in wet conditions such as during rain. The present invention relates to a rubber plate for roads and a slip resistant road surface using the same.
[0002]
[Prior art]
In cold regions, there was a problem that the car could not start on the slope because the snow in the winter was frozen and slippery.
[0003]
For this reason, a method has been proposed in which a rubber plate is used as a part of the road surface, on which frozen ice is difficult to adhere, and the ice can be easily broken by applying pressure. By laying the rubber plate, the ice adhering to the road surface is cracked, but there is a possibility that the melted ice exists between the rubber plate and the rubber material of the tire and the friction coefficient is lowered. In particular, there is a problem that such a tendency appears even when it rains at a time other than when the road surface is frozen.
[0004]
For this reason, a method has been proposed in which a lateral groove is provided on the rubber surface in the direction of crossing the road, or a cylindrical projection called a block pattern is provided on the rubber surface as described in JP-A-55-164505. Japanese Patent Application Laid-Open No. 6-2460615 proposes a method of providing a soft rubber layer on an intermediate layer of a rubber plate in order to improve the strain function. However, all of these are effective in crushing and thawing frozen ice, but do not increase the coefficient of friction between the rubber plate and the tire, and in particular, the slip resistance when wet is insufficient.
[0005]
[Problems to be solved by the invention]
It is an object of the present invention to have a road rubber plate having excellent slip resistance performance even in the winter season when it is frozen and at times other than when the road surface is frozen, and excellent slip resistance performance using the road rubber plate. A slip resistant road surface is provided.
[0006]
[Means for Solving the Problems]
The road rubber plate of the present invention is characterized in that fine ribs are arranged on the surface.
[0007]
The fine ribs preferably have a top width of 5 μm to 2 mm, a height of 5 μm to 3.0 mm, and a distance between adjacent fine ribs of 5 μm to 1.5 mm. It is preferable to be parallel to the traveling direction.
[0008]
The rubber material constituting the road rubber plate of the present invention is preferably a fiber composite material in which short fibers are blended in a rubber matrix, and the rubber matrix comprises a crosslinked rubber, a thermoplastic elastomer, and these. One or more types selected from foams, the short fibers are one or more types selected from organic synthetic fibers, regenerated fibers and natural fibers, and the short fibers have an average length of 0.1 to 100 mm and an average diameter. Is preferably a short fiber having an aspect ratio of 5 to 1000, and the addition amount of the short fiber to the rubber matrix is preferably 0.1 to 80% by volume.
[0009]
The slip-resistant road surface of the present invention is a slip-resistant road surface in which a rubber plate is laid on a part of the pavement surface, the top width of the rubber plate is 5 μm to 2.0 mm, the height is 5 μm to 3.0 mm, and adjacent to the surface. The fine ribs having an interval of 5 μm to 1.5 mm with respect to the fine ribs to be arranged are arranged in a direction parallel to the traveling direction of the vehicle .
[0010]
The road rubber plate of the present invention has fine ribs on the surface thereof, so that moisture in the water film formed between the road rubber plate surface and the tire flows into the gaps of the fine ribs when wet. It is considered that an excellent slip prevention effect is obtained by reducing / removing the water film that causes slip.
[0011]
Further, as a rubber material constituting the road rubber plate, even if the surface is worn and the effect of fine ribs is reduced by using a fiber composite material in which short fibers are blended in a rubber matrix, the fiber composite material is caused by wear. A new gap is formed by the falling of the fibers in the inside, and therefore, the above-mentioned rubber sheet for roads having good slip resistance and maintaining its effect can be obtained. By laying these road rubber plates, it is possible to obtain a slip-resistant road surface having good slip resistance and durability.
[0012]
【Example】
The present invention will be described in more detail below.
[0013]
FIG. 1 is a perspective view showing an example of a road rubber plate according to the present invention.
FIG. 2 is an enlarged cross-sectional view taken along the line 2-2 of the road rubber plate of FIG.
[0014]
Fine ribs 12 are formed on the surface of the rubber plate 10.
As is apparent from FIG. 2, the fine ribs 12 are formed in a plurality of rows in parallel in a certain direction, and the width (w _t ) of the top of one row of ribs is preferably 5 μm to 2 mm, and more preferably 30 μm to 1.5 mm is preferable, and 40 μm to 1.0 mm is more preferable. If the width (w _t ) of the rib top is less than 5 μm, the fine groove may be crushed and drainage may be insufficient. If it exceeds 2 mm, it takes time for water to flow into the recesses between the ribs. There is a possibility that the water film is not substantially removed.
[0015]
The height (h) of the fine ribs 12 is preferably 5 μm to 3.0 mm, more preferably 20 μm to 1.5 mm, and even more preferably 50 μm to 0.8 mm. If the height is less than 5 μm, it is difficult to sufficiently drain the water film between the tire and the rubber plate, and if it exceeds 3.0 mm, production becomes difficult, and dust and the like are likely to adhere, resulting in a decrease in the effect. There is a risk of doing.
[0016]
The fine ribs 12 are formed in a plurality of rows in parallel, and the interval (w _b ) between adjacent fine ribs is preferably 5 μm to 1.5 mm, and more preferably 30 μm to 1.0 mm. When the distance (w _b ) between adjacent fine ribs is less than 5 μm, the volume of the gap between the fine ribs is insufficient, and the desired drainage effect cannot be obtained. It will be crushed by the stress, drainage as designed will not be made, slip resistance will be reduced.
[0017]
There is no particular limitation on the arrangement direction of the fine ribs formed in a plurality of rows in parallel in a certain direction, and the effect of the present invention is sufficiently exerted even if it is formed in any direction with respect to the traveling direction of the vehicle. When the arrangement direction has a certain direction as in this embodiment, it is possible to obtain a higher drainage effect that the portion formed by continuously forming effective recesses is parallel to the traveling direction of the vehicle. From the viewpoint of being obtained.
[0018]
There are no particular restrictions on the method for producing the road rubber plate of the present invention. For example, a suitable fine groove is formed in advance on a mold for rubber plate molding by means such as cutting, chemical etching, sandblasting, and the like. Examples include a method of forming a rubber material at the time of crosslinking using a mold, a method of forming a rib by cutting the surface of a rubber plate after molding a flat rubber plate, and the like. From the viewpoint of uniformly controlling the rib shape, the molding method is preferable.
[0019]
The fine ribs formed on the rubber plate of the present invention may be formed on the front surface of the rubber plate as shown in FIG. 1, and the macro formed on the surface of the rubber plate as shown in the perspective view of FIG. The pattern 14 may be formed only on the portion of the surface of the convex portion that contacts the tire of the vehicle. FIG. 3 is a perspective view showing a road rubber plate 16 provided with a cylindrical macro pattern 14 on the surface. In this example, the fine ribs 12 are formed only on the surface of the cylindrical macro pattern 14.
[0020]
The shape of the fine ribs formed on the road rubber plate of the present embodiment is a quadrilateral cross section and is continuously formed in parallel, but the shape of the fine ribs is not particularly limited. The shape has any shape as long as the top width (w _t ), height (h), and distance (w _b ) between adjacent fine ribs satisfy the above-mentioned preferable conditions. In addition, these fine ribs may be formed continuously as in the above embodiment, or may be formed intermittently.
[0021]
Any rubber material can be used as long as the rubber material used as the material of the rubber plate for road of the present invention has sufficient strength to be laid and used on the road.
[0022]
When the road rubber plate of the present invention is used while being laid on the road, the slip resistance is maintained as long as the concave portion effective for the drainage effect formed by the fine ribs is formed. For this reason, even if the tips of the fine ribs are worn, the slip resistance is not significantly reduced thereby, and the slip resistance effect is maintained as long as the fine rib shape is maintained. Furthermore, by using a material having excellent wear resistance as the rubber material constituting the rubber plate, a more durable road rubber plate can be obtained.
[0023]
Further, when a road rubber plate is laid on the road and used for a long period of time, the fine ribs are worn away, and finally a recess effective for drainage cannot be formed. In this case, it is only necessary to replace the rubber plate for the road. Furthermore, in order to maintain the slip resistance effect, as a rubber material constituting the rubber plate, a fiber composite material in which short fibers are added in a rubber matrix. Alternatively, it is preferable to use a foam rubber material.
[0024]
The fiber composite material suitably used here is a fiber composite material obtained by adding fibers to a matrix, and the fibers are added in an amount of 0.1 to 80% by volume with respect to the matrix, and the fiber axial direction. It is preferably a short fiber having a length of 0.1 to 100 mm, a fiber diameter of 1 to 150 μm, and an aspect ratio of 5 to 1000.
[0025]
As a kind of fiber added to the matrix, any of natural fiber, organic synthetic fiber, natural fiber, and inorganic fiber can be used. For example, organic synthetic fibers such as nylon (polyamide), polyester and kevlar, regenerated fibers such as rayon, natural fibers such as cotton and wool, inorganic fibers such as glass, ceramic and carbon. Nylon and polyester that are easy to handle are suitable.
[0026]
The diameter of the fiber is 1 to 150 μm, preferably 5 to 100 μm, more preferably 10 to 60 μm. The length of the fiber is 0.1 to 100 mm, and from the viewpoint of the effect, it is preferably 0.5 to 50 mm, and more preferably 1 to 10 mm. Further, the aspect ratio of the fiber is 5 to 1000, preferably 7 to 800, and more preferably 10 to 500. Whether the diameter is less than 0.1 μm, more than 150 μm, the length is less than 0.1 mm, more than 100 mm, the aspect ratio is less than 5, or more than 1000, all depend on the fibers in the matrix. Since the function improvement effect of a composite material is hard to appear, it is not preferable.
[0027]
The added amount of fiber needs to be 0.1 to 80% by volume with respect to the matrix, and from the viewpoint of the effect, preferably 0.5 to 30% by volume, more preferably 1 to 10% by volume. is there. If the amount added is less than 0.1% by volume, the effect of improving the physical properties due to the addition of fibers is insufficient, and if it exceeds 80% by volume, processing becomes difficult, which is not preferable.
[0028]
The fiber used in this fiber composite material exhibits the effect of the present invention even if it has not been subjected to an effective treatment for adhesion to the matrix in advance. , Have a more remarkable effect.
[0029]
Although there is no restriction | limiting in particular in the matrix used for a fiber composite material, 1 or more types selected from crosslinked rubber, a thermoplastic elastomer, and these foams are used preferably.
[0030]
Examples of the rubber system include cross-linked rubber obtained by adding a cross-linking agent such as sulfur to natural rubber, butadiene rubber, isoprene rubber, butadiene-styrene rubber, halogenated butyl rubber and blends thereof.
[0031]
As the thermoplastic elastomer, styrene-based elastomers such as styrene block copolymers, olefin-based, urethane-based, polyester-based, polyamide-based, fluorine-based elastomers, and mixtures thereof are suitable.
[0032]
Among these matrices, rubber contains compounding agents usually used in the rubber industry, for example, fillers such as carbon black, vulcanizing agents such as sulfur, stearic acid, zinc oxide, vulcanization accelerators, anti-aging agents, Softeners and the like can be blended as appropriate. In the elastomer, compounding agents such as commonly used lubricants, antioxidants, pigments and softeners can be blended as appropriate.
[0033]
In such a fiber composite material, the fibers blended in the matrix are missing at the stage where the surface is worn, and the voids after the fibers on the matrix surface are missing form a micro channel. It is done.
[0034]
The foamed rubber material is obtained by foaming rubber or elastomer as used as a matrix in the fiber composite material. The average bubble diameter of the foamed rubber material is preferably 10 to 300 μm. If it is less than 10 μm, it is difficult to obtain the effect of foaming, and if it exceeds 300 μm, the strength of the material is lowered, which is not preferable. The foam rubber material can be obtained by adding a suitable foaming agent to the matrix material.
[0035]
When this foamed rubber material is used, it is considered that the void formed by bubbles exposed on the surface due to wear forms a micro flow path, and the effect is sustained.
[0036]
Furthermore, it is also preferable to use a foamed fiber composite material that is the fiber composite material and uses a foamed rubber material as the matrix material. When the foamed rubber and the fiber are combined, the average bubble diameter of the bubbles is preferably 10 to 300 μm, more preferably 30 to 100 μm. If it is less than 10 μm, it is difficult to obtain the effect of foaming, and if it exceeds 300 μm, the strength of the material is lowered, which is not preferable.
[0037]
That is, by using this foamed fiber composite material, a more efficient micro channel can be formed by the voids due to the lack of the fibers and the voids of the bubbles exposed on the surface due to wear.
[0038]
Although the thickness of the rubber plate depends on the material of the rubber plate, it is preferably about 15 mm to 45 mm because it requires deformation to the extent that ice breaks due to the load of the automobile tire. It is preferable to lay the rubber plate on a place where it is necessary to prevent the road from slipping, particularly on an inclined road.
[0039]
A second invention in the present application relates to a slip resistant road surface on which the road rubber plate is laid.
[0040]
FIG. 4 is a cross-sectional view showing an example of a slip resistant road surface of the present invention. The pavement surface 18 and the rubber plate 10 surface are laid so as to coincide with each other.
[0041]
When laying the rubber plate 10 on the road surface, a part of the pavement surface 18 is dug and the rubber plate 10 is embedded integrally with the road floor 20 so that the pavement surface 18 coincides with the rubber plate surface. In this way, the slip resistance can be improved, and further, the top of the fine ribs 12 and the rubber plate surface can be prevented from being damaged and the rubber plate can be prevented from being peeled off from the road bed by the snow removal operation.
[0042]
As a method of laying the rubber plate on the road surface, it may be bonded to the road floor as it is using an adhesive or the mortar material itself used for the road floor, and may be integrated, or fixed using bolts etc. May be. The bolt to be used is not particularly limited as long as the strength for fixing the rubber plate is sufficient. For example, a method of using a screw-in bolt by embedding a nut in the road floor, a method of using a knock-in anchor bolt, etc. Is mentioned.
[0043]
When laying a rubber plate on the slip resistant road surface, in order to firmly fix the rubber plate to the road floor, in the rubber plate, a kind selected from the group consisting of a washer, a woven cloth or a brace cord, a wire mesh, a metal plate, or Two or more kinds may be embedded integrally with the rubber plate.
[0044]
In addition, a woven fabric or a blind cord can be embedded in the rubber plate for firm fixation with the road floor, but the woven fabric or the blind cord embedded in the rubber plate 10 is integrated with the rubber plate. It is preferably molded. The woven fabric is preferably a rigid, high-strength material such as canvas or canvas, and is embedded in one or several layers. Bamboo cord is called cord fabric or fabric, and refers to a cloth woven from thick yarn like tire cords in a saddle shape with very thin thread. If the road surface is curved and curved, it will be wrinkled. It is preferable to embed an interdigital cord that is difficult and easily deformed.
[0045]
A wire mesh or a metal plate can be embedded in the rubber plate for firm fixation with the road bed. Examples of the wire mesh and metal plate embedded in the rubber plate include steel, aluminum nets or thin plate-like ones, but are limited to these as long as they impart strength to the rubber plate. is not.
[0046]
The woven fabric or braided cord, the wire mesh, the metal plate, etc. are integrally embedded in a rubber plate, and the rubber plate 10 in which one or more of these are embedded is fixed to the road bed 20 via bolts or the like. The At this time, it is more preferable to embed a washer in a rubber plate in which a woven fabric or a braided cord, a wire net, a metal plate, etc. are embedded, for firm fixation with the road bed.
[0047]
When a rubber plate is laid on the slip resistant road surface, the rubber plate is required to be greatly deformed by a load of a tire of an automobile from the viewpoint of slip resistance. On the other hand, in order to maintain the performance even after the fine ribs of the present invention are reduced due to wear, it is necessary to form a micro moisture channel. For this reason, it is preferable that all or part of the rubber plate is composed of the short fiber composite material or the foamed rubber material as described above.
[0048]
The foamed rubber material having bubbles used for the rubber plate for roads is a known material that is also used for tire treads and the like because of its excellent compression modulus and good durability. A foamed rubber material as a material for the rubber plate is preferably a relatively flexible material having a foaming ratio of about 5% to 30% from the viewpoint of increasing deformation.
[0049]
When foam rubber material is used for the road rubber plate, the whole may be made of foam rubber material, the lower surface fixed to the road floor is formed of ordinary rubber material, and only the surface is foam rubber A material may be used.
[0050]
A road formed by using a rubber material of the composition shown in Table 1 below, and a rubber plate having a thickness of 3.5 cm and 1 m square, and a 0.98 m square and 1 cm thick iron plate subjected to adhesion treatment. A rubber plate was created.
[0051]
[Table 1]

[0052]
The rubber plate was provided on the road floor, and a concave portion was provided on the rubber plate so that the bolt head portion was not exposed on the surface of the rubber plate.
(Slip resistance test)
A large amount of water was sprayed on the surface of the test road surface to create a wet state. The distance of full lock brake control at a speed of 10 km / h was measured using a 1500 cc passenger car fitted with studless tires (185 / 70R-13) on the road surface. The index was evaluated by setting the braking distance of Comparative Example 1 to 100. The smaller the index, the better the performance.
[0053]
This test was conducted in the initial stage to evaluate the initial characteristics. Thereafter, the same test was performed with the rubber plate surface worn by 2 mm to evaluate the durability of the effect. The results are shown in Table 2 below.
[0054]
Example 1
Using a rubber material having the composition shown in Table 1 above, a mold having grooves 160 μm, protrusions 60 μm, and depth 50 μm formed by chemical etching, a rubber plate surface having a width (W _t ) of 160 μm and rib spacing (W _b ) A rubber plate having fine ribs of 60 μm and a height (h) of 50 μm was formed. This was fixed to the roadbed so that the rib direction was parallel to the vehicle running direction, and a test road surface was obtained.
[0055]
(Example 2)
A fiber composite material obtained by compounding 10 parts by weight of polyester short fibers having a diameter of 50 μm and a length of 1 mm with a rubber material having the composition shown in Table 1 was used. A groove having a concave of 400 μm, a convex of 230 μm, and a depth of 250 μm is formed in the mold, and a width (W _t ) of 400 μm, a rib interval (W _b ) of 230 μm, and a height (h) are formed on the rubber plate surface using the mold. A rubber plate with 250 μm fine ribs was formed. This was fixed to the road bed in the same manner as in Example 1 to obtain a test road surface.
[0056]
Example 3
The fiber composite material used in Example 2 was further blended with 2.5 parts by weight of dinitrosopentamethylenetetramine as a foaming agent and 2.5 parts by weight of urea as a foaming aid, with a foaming rate of 20% and a foam diameter of about A rubber plate was prepared in the same manner as in Example 1 except that a 50 μm foamed fiber composite material was used, and this was fixed to the road bed in the same manner as in Example 1 to obtain a test road surface.
[0057]
(Comparative Example 1)
A rubber plate was prepared in the same manner as in Example 1 except that the rubber material having the composition shown in Table 1 was used and a fine rib was not formed using a flat mold, and a test road surface was obtained by fixing the rubber plate to the road bed. It was.
[0058]
[Table 2]

[0059]
As is apparent from Table 2, all road surfaces using the road rubber plate of the present invention were excellent in wet slip resistance. Furthermore, the rubber sheet for roads of Examples 2 and 3 using a fiber composite material or a foamed fiber composite material as a rubber material has excellent slip resistance even after the surface wear is continued. I understood.
[0060]
【The invention's effect】
Since the road rubber plate according to the present invention has the above-described configuration, it exhibits excellent slip resistance performance even in wet conditions such as during road surface freezing and raining in winter. Also. A slip-resistant road surface using the road rubber plate exhibits excellent anti-slip properties even when wet.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a road rubber plate according to the present invention.
FIG. 2 is an enlarged cross-sectional view taken along the line 2-2 of the road rubber plate shown in FIG.
FIG. 3 is a perspective view showing an example of a road rubber plate having a macro pattern formed on its surface.
4 is a cross-sectional view showing an example of a slip resistant road surface in which the road rubber plate of FIG. 1 is embedded.
[Explanation of symbols]
10 Rubber plate for road 12 Fine rib 16 Rubber plate for road 18 Pavement surface 20 Road floor

Claims (8)

On the surface, a fine rib having a top width of 5 μm to 2.0 mm, a height of 5 μm to 3.0 mm, and a distance between adjacent fine ribs of 5 μm to 1.5 mm is arranged in a direction parallel to the traveling direction of the vehicle. A rubber plate for road use.   2. The rubber plate for road according to claim 1, wherein the rubber material constituting the rubber plate for road is a fiber composite material in which short fibers are blended in a rubber matrix.   The road rubber plate according to claim 2, wherein the rubber matrix is at least one selected from a crosslinked rubber, a thermoplastic elastomer, and a foam thereof.   The road rubber plate according to claim 2, wherein the short fibers are at least one selected from organic synthetic fibers, recycled fibers and natural fibers.   The road rubber plate according to claim 4, wherein the short fibers are short fibers having an average length of 0.1 to 100 mm, an average diameter of 1 to 150 μm, and an aspect ratio of 5 to 1000.   The road rubber plate according to claim 4, wherein the amount of the short fibers added to the rubber matrix is 0.1 to 80% by volume. The road rubber plate according to claim 4, wherein the short fibers are not subjected to an effective bonding treatment for bonding with the rubber matrix. In a slip-resistant road surface in which a rubber plate is laid on a part of the pavement surface, the width of the top is 5 μm to 2.0 mm, the height is 5 μm to 3.0 mm, and the distance between adjacent fine ribs is 5 μm. A slip-resistant road surface, characterized in that fine ribs of ~ 1.5 mm are arranged in a direction parallel to the traveling direction of the vehicle .

Images