JP2008215061A - Road surface structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure having a nonslippery surface and excelling in durability while allowing road surfaces to be easily visually recognizable for making a display such as a guide display and a section display or for installing road equipment or the like, in various environments such as in daytime, at night and in the rain. <P>SOLUTION: A road surface structure has granular aggregate 2 with light transmitting property stuck with a binder formed of a synthetic resin material. The binder contains short fiber and a light storage material, and the binder 3 leaves a continuous void 5 between the aggregate 2 while exposing a part of the aggregate 2 to form an uneven surface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention includes a sidewalk, a promenade, a sidewalk in a house, a park road, a road surface such as a parking lot and a rooftop, a road surface such as a stair step, a tree circle, and a grating, as well as a car stop, a safety fence, a pedestrian boundary stone, The present invention relates to a road surface structure used for a road surface on which various road equipment such as signs are installed.

Generally, concrete pavement, asphalt pavement, natural stone pavement, etc. are performed on roads such as sidewalks, promenades, residential sidewalks, roads such as park gardens, road surfaces such as parking lots and rooftops, stairs steps, tree circles, and gratings. In many cases, rainwater and other water are likely to accumulate, and if rainwater accumulates on the road surface, it may become a film and the passerby may slip and fall.

In addition, various road equipment such as car stops, safety fences, pedestrian road boundary stones, and signs are installed around roads, facilities, and parking lots, and safety is ensured by planting trees. Although it is possible to identify road equipment and trees in the daytime, there is almost no consideration for visibility in dark places at night, and road equipment and trees in dark places. Becomes an obstacle for passers-by and bicycles, and there are many safety problems such as many injuries caused by collisions.

Conventionally, aggregates that make up road surface structures and binders such as synthetic resins have been blended into the interior for the purpose of ensuring safety during road surfaces such as roads in various environments such as daytime, nighttime, and rainfall. By making the structure with water permeability (collectively, water permeability, drainage, and water permeability, hereinafter referred to as water permeability), it reduces water pools such as rainwater and makes it difficult to slip, and it is dark at night For the purpose of improving safety in places, improve visibility in dark places at night by using phosphors and phosphorescent materials (collectively phosphorescent phosphors having phosphorescent and afterglow properties). Various ideas have been made.

Thus, as an attempt to improve the function and performance of such a road surface structure, for example, Patent Document 1 has water permeability capable of various colors in which an aggregate such as colored glass and a binder resin are mixed and bonded. Pavement materials for civil engineering and construction have been proposed.

Further, for the purpose of improving water permeability in asphalt pavement, for example, Patent Document 2 discloses a road that has a water permeability function by mixing a hydrophilic polymer with a filler containing aggregate and binder resin to increase water permeability. Pavement materials have been proposed, and in addition, it has been proposed that a substance that emits light, such as a phosphorescent material, be mixed in a binder resin.

Furthermore, proposals have been made by using phosphorescent materials for the purpose of ensuring safety in dark places at night. Here, the phosphorescent material refers to a material having a performance (afterglow) that is excited by irradiating with sunlight or illumination light and continues to emit fluorescent color even after the light irradiation is stopped. In the use of a phosphorescent material, for example, Patent Document 3 proposes to add a phosphorescent material to a binder resin that binds aggregates together so that the entire structure emits light at low cost.

Japanese Patent Laid-Open No. 7-90805 JP 2002-363905 A JP 2006-83680 A

In the proposal of Patent Document 1, although the effect of chromaticity in the daytime is recognized, it may be difficult to exhibit a chromatic function with visibility at night or in a dark place, and until the binder resin is solidified. There are cases where it is difficult to obtain a stable adhesive force between the aggregates and voids, such as the possibility of flowing in the lower layer direction, and it is difficult to ensure sufficient strength and water permeability as a road surface structure.

In general, consideration for strength and water permeability is necessary for road surface pavement materials, but in the proposal of Patent Document 2, the purpose is to finish pavement on the upper surface of the base pavement, and no consideration is given to strength. In addition, water permeability can be improved by increasing the water permeability with a hydrophilic polymer, but it is a proposal to fill and reinforce fine-grained aggregate between asphalt aggregates, so it creates uneven parts on the pavement surface. However, there is a problem that the road surface becomes slippery.

In addition, in order to store light and emit light well in a structure containing a phosphorescent material, the transparency of the binder resin used for mixing is required, and the translucency of the aggregate is a very important factor. In the proposal of Document 3, no consideration is given to the translucency of the aggregate, and no consideration is given to the strength as a structure.

As described above, it is difficult to identify the display installed on the road surface in dark places such as at night, especially when the entire road surface is reflected due to rainfall at night. It becomes difficult. Moreover, there are many cases where the surface becomes slippery and causes traffic accidents and falls. In addition, since the display is on the road surface, there is a problem that the wear damage is severe due to the passage of the vehicle or the like, and the application work must be performed frequently. Furthermore, in recent years, water-permeable pavement with water permeability is often taken into consideration for the environment, but the surface is rough, so it is difficult to draw a display by applying paint, and when the display part becomes wide, pavement Another problem is that the water permeability of the surface is impaired.

The present invention has been made in view of the above circumstances, and is a guidance display that has a surface that is difficult to slip on the road surface in various environments such as daytime, nighttime, and rain, and has excellent visibility and durability. Another object of the present invention is to provide a road surface structure that can form a partition display. Furthermore, on the road surface where trees are planted and road equipment is installed, the surface is difficult to slip on the road surface in various environments such as daytime, nighttime, and rain, and is easy to see. And it aims at providing the road surface structure excellent in durability.

The road surface structure of the present invention is a road surface structure in which a granular aggregate having light transmissivity is fixed with a binder of a synthetic resin material, the binder contains short fibers and a phosphorescent material, An uneven surface is formed by leaving a continuous space between the aggregates and exposing a part of the aggregates.

Furthermore, the aggregate is made of glass cullet.

The road surface structure of the present invention is a road surface structure in which a granular light-transmitting aggregate is fixed with a synthetic resin binder. The binder contains short fibers and a phosphorescent material. It has good strength as a road surface structure by leaving a continuous void between the materials and exposing a part of the aggregate to form an uneven surface, and at night as well as daytime It is easy to see in the event of power failure of external lighting due to accidents or disasters, and it is possible to form a guidance display or section display that is not slippery and has excellent durability, and is guided to the drainage pavement surface. Display and partition display can be performed without any problem. Furthermore, on the road surface where trees are planted and road equipment is installed, the surface is not slippery and easily visible on dark roads in the daytime and at night and in various environments such as during rain. And the road surface structure excellent in durability can be obtained.

Furthermore, in the road surface structure of the present invention, the aggregate is made of glass cullet, so that the design can be improved and recycled glass can be effectively used from the viewpoint of energy saving and resource saving. Excellent effects can be expected.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described below in detail with reference to the drawings. However, the present invention is not limited to such an embodiment.

(Embodiment 1)
FIG. 1 is an external perspective view of an embodiment of a road surface structure according to the present invention, and FIG. 2 is a partially enlarged sectional view thereof. The road surface structure 1 is entirely in the form of an arrow and has a thickness of about 1 to 5 cm. Reference numeral 2 denotes an aggregate such as a glass grain, and the aggregate 2 is fixed to each other by a binder 3 of a synthetic resin material. The binder 3 has a large number of gaps 5 without completely sealing between the aggregates 2, and the gaps 5 are continuous so that in the road surface structure 1, each of the gaps 5 communicates in a direction X perpendicular to the surface direction. ing. As shown in FIG. 3, the binder 3 contains a plurality of short fibers 6 made of reinforcing ceramic fibers and a powdery phosphorescent material 7.

In general, when a guidance display or a division display is embedded in a road surface and used as a road surface structure, it is necessary to have excellent strength and weather resistance, or from this point of view, the aggregate 2 having granular translucency As a material, glass having an average particle diameter of about 1 mm to 10 mm is taken as an example, but synthetic resin may be used. Moreover, you may utilize the aggregate of the glass cullet which consists of recycled glass excellent in translucency from a viewpoint of energy saving or resource saving. In addition, when using glass cullet, it is preferable to ensure safety by rounding sharp corners. Furthermore, in order to enhance the light emission of the phosphorescent material, an aggregate 2 having translucency with a transmittance of ultraviolet light and visible light as a phosphorescent material excitation source of 50% or more, more preferably 70% or more is used. It is preferable to do this. When the aggregate 2 having a transmittance of ultraviolet rays and visible light of 50% or less is used, the phosphorescent material is not sufficiently excited, and the phosphorescent material emits light in a dark place and may not be visible for a long time. .

The synthetic resin material of the binder 3 needs to be excellent in strength as a road surface structure in which the aggregates 2 are joined, and the phosphorescent material to be contained is irradiated with ultraviolet rays and visible light, etc. to excite and emit light well. Therefore, a synthetic resin having good transparency such as acrylic, urethane, epoxy, and vinyl ester is preferable. Note that, depending on the synthetic resin, yellowing or the like may occur during use. However, since the light emission of the phosphorescent material may be weakened due to the coloring of the synthetic resin, in the present invention, weather resistance is good and yellowing is difficult. It is preferable to use a synthetic resin.

Further, it is preferable to use a short fiber having a fiber length of 0.1 mm to 10 mm such as glass fiber or ceramic fiber in the binder 3. When short fibers are mixed and used in the binder 3, dripping of the binder 3 (flow until the synthetic resin is cured) is reduced, and the amount of the binder 3 attached to the road surface structure 1 shown in FIG. In addition to obtaining a road surface structure that is uniform in the vertical direction and having good strength, the gaps 5 in the road surface structure 1 are stable and continuous with little unevenness, and a road surface structure excellent in water permeability is obtained. .

There is no restriction | limiting in particular as a luminous material mix | blended with the synthetic resin of the binder 3, Arbitrary things can be suitably selected and used from the well-known things used conventionally. As such a phosphorescent material, a sulfide-based phosphorescent material such as ZnS: Cu (green light emission), CaSrS: Bi (blue light emission), or the like can be used. Further, as aluminate-based phosphorescent materials, for example, CaAl ₂ O ₄ : Eu, Nd (yellowish green light emission), SrAl ₂ O ₄ : Eu, Dy (yellowish green light emission), Sr ₄ Al ₁₄ O ₂₅ : Eu, Dy (blue) Green light emission) can also be used. Aluminate-based phosphorescent materials have excellent afterglow characteristics such as higher afterglow brightness and longer afterglow time than sulfide-based phosphorescent materials, and are also excellent in outdoor weather resistance. It is preferable to use an aluminate-based phosphorescent material.

Next, a manufacturing example of the road surface structure 1 will be described. First, a hardener is added to the synthetic resin binder 3 in which the short fibers 6 and further the phosphorescent material 7 are mixed, kneaded, and then the aggregate 2 is further mixed to obtain the mixed material 12. As shown in FIG. 4, the mixed material 12 is put into a concave mold 10 that is recessed in the direction of the arrow, and as shown in FIG. 5, the surface is covered with a panel 13 having a release agent applied to the lower side, It is molded and solidified by pressing from the upper part while applying vibration with the rolling compactor 20, and then the panel 13 is taken out and the display structure 1 is taken out from the mold 10.

In the manufacturing process, the size, shape and amount of the aggregate 2, the viscosity and amount of the mixed material 12, and further the pressure applied by the compactor 20 and the magnitude of vibration are appropriately adjusted, so that the road surface structure 1 It is possible to obtain a structure having an uneven shape with an exposed surface, further including voids 5 and communicating with each other. Further, as shown in FIG. 3, the short fibers 6 made of ceramic fibers in the binder 3 are molded and solidified by applying pressure and vibration by the compactor 20 as described above. As a result, the strength of the binder 3 is increased and the binding force of the aggregate 2 is increased, so that an excellent strength as a road surface structure can be obtained.

FIG. 6 shows a road 100 on which the road surface structure 1 is laid. This road 100 has a drainage pavement surface 101 made of asphalt, and a road surface structure 1 is fitted and attached to a part of the road 100, and an arrow display 102 as a road surface display body is formed. This arrow display 102 is because the aggregate 2 constituting the road surface structure 1 has translucency in a bright environment such as daytime, and the binder 3 contains the phosphorescent material 7 and exhibits a cloudy color. It looks white on the drainage pavement surface 101 made of black asphalt and performs a guide display function in the traveling direction. In a dark place such as at night, the arrow display 102 performs a display function in the same manner as in the daytime by external illumination, and further displays a bright display by light emission of the phosphorescent material 7 contained in the binder 3. As a result, the arrow display 102 can be visually recognized more easily than the conventional one at night, and the guide display function is sufficiently achieved.

Further, since the surface of the aggregate 2 is exposed so that the surface is uneven, it is difficult for the surface to slip even when it rains, so that a slip accident such as a vehicle or a human fall accident can be avoided. Furthermore, by having water permeability, it can be used for the drainage pavement surface 101 as described above without any trouble.

The road surface structure 1 can be installed as it is even in construction on the site where it is installed. The construction method will be described with reference to FIG. 4. A recess 201 having a predetermined shape is formed on the pavement surface 200, and the recess 201 is used as a mold. The mixed material 12 of the binder 3, the curing agent, and the aggregate 2 is poured into the road surface structure 1, and the road surface structure 1 is installed as it is in the recess 201 as an arrow display 102. When the shape of the road surface structure 1 is complicated, there arises a problem that the form of the display structure 1 manufactured in advance and the fitting portion of the installation site do not match, but the problem is solved by the production and construction at the site. Is done.

As an embodiment of the road surface structure 1, a structure in which the lower layer is a white layer W in FIG. 2 is provided. The white layer W is formed by integrating an aggregate such as a white stone material with a binder that does not include a phosphorescent material. This road surface structure 1 also has water permeability as a whole because the white layer W has water permeability, and exhibits the same effect as the road surface structure 1, and further has an excellent display function as described below. Have. That is, by providing the lower layer with the white layer W, the reflected light extends outward through the road surface structure 1, so that the normal display is easier to visually recognize. Further, the phosphorescent material 7 in the binder 3 of the road surface structure 1 Since the light emission is reflected by the white layer W and extends outward, the visual recognition in a dark place such as at night is made clearer.

The display structure 1 is manufactured by smoothing the mixed material forming the white layer W by pouring the recess of the mold or the pavement surface, and further pouring the mixed material in the above embodiment, as in the above manufacturing example. To do.

(Embodiment 2)
As described above, the embodiment of the road surface structure as the display object has been described. However, as shown in FIG. 7, it can be implemented as a road surface structure having the same structure in the tree circle 15 installed at the root of the tree. The road surface structure 1 of the present invention is attached to the opening of the tree circle 15.

FIG. 8 is a cross-sectional view taken along the line AA in FIG. 7, and FIG. 9 is a partially enlarged perspective view of a portion B where the road surface structure 1 is attached to the opening of the tree circle 15 in FIG. In addition to having a good nutritional balance, it is important that the soil suitable for tree growth is adequately supplemented with daylighting and moisture. Since the road surface structure 1 of the present invention has good water permeability and translucency, the soil in the tree circle 15 is appropriately supplied with moisture such as rainwater, and the soil around the trees is exposed to sunlight. As a result, an environment in which microorganisms and the like that are excellent for trees can grow can be expected, so that it can be expected to prevent root rot and contribute to the growth of trees. Furthermore, the road surface structure of the present invention covers the opening of the tree circle 15 and the growth of weeds is inhibited, and maintenance work such as weeding can be reduced. Further, in the dark place at night, the location of the tree circle 15 can be visually recognized by the light emission of the phosphorescent material 7, and the injury caused by the collision with the tree can be prevented, thereby contributing to ensuring safety.

(Embodiment 3)
FIG. 10 shows a road surface structure according to a third embodiment of the present invention, in which a draining groove 16 is provided with a grating 17 as a groove lid, and the drainage groove 16 is provided with a step portion 18 for installing the grating 17. The road surface structure 1 is attached to the opening of the grating 17 as in FIG.

FIG. 11 is a cross-sectional view taken along the line C-C in FIG. 10. The bottom surface of the grating 17 installed in the step portion 18 of the drainage groove 16 is reinforced by a punching plate 19, and the upper surface opening portion has the road surface structure 1 of the present invention. Is installed. The grating 17 equipped with the road surface structure of the present invention can eliminate the visual opening, and the water is quickly dropped into the side groove so as not to be different from the normal grating, so that the fallen leaves and dust do not enter the water channel. Management becomes easy. Moreover, the intensity | strength of grating itself improves also by packing the road surface structure of this invention in a normal grating opening part. Furthermore, it can contribute to safety measures such as women's heel depression and wheelchair traffic obstruction measures, and can ensure traffic safety by light emission of the phosphorescent material 7 in the event of a power outage during a disaster or in dark places at night. .

In addition to the embodiments described above, by implementing the same road surface structure on the road surface around the drinking fountain in the park and the road surface where the vehicle stop is installed for the purpose of preventing the vehicle from entering the sidewalk, etc. Disasters such as collisions in dark places can be prevented, ensuring safety.

It is an external appearance perspective view which shows Embodiment 1 of this invention. It is a partial expanded sectional view same as the above. It is sectional drawing of the binder used for each embodiment of this invention. It is explanatory drawing of the manufacture or construction example of each embodiment of this invention. It is explanatory drawing which shows the manufacture example of Embodiment 1 of this invention. It is a perspective view which shows the state which uses Embodiment 1 of this invention for a road. It is an external appearance perspective view which shows Embodiment 2 of this invention. It is AA sectional drawing of FIG. It is the elements on larger scale of the B section of FIG. It is an external appearance perspective view which shows Embodiment 3 of this invention. It is CC sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Road surface structure 2 Aggregate 3 Binder 5 Cavity 6 Short fiber 7 Phosphorescent material 10 Concave type 12 Mixed material 15 Tree circle 16 Drainage groove 17 Grating 18 Step part 19 Punching plate

Claims (2)

In a road surface structure in which a granular light-transmitting aggregate is fixed with a binder of a synthetic resin material, the binder contains short fibers and a phosphorescent material, and the binder forms a continuous gap between the aggregates. A road surface structure in which an uneven surface is formed by leaving a part of the aggregate and exposing the aggregate. The road surface structure according to claim 1, wherein the aggregate is made of glass cullet.

Images