JP2014080819A - Pavement body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pavement body for drawing pedestrian's and driver's attention to a paved road by effectively utilizing such a phenomenon that wet colors on a pavement surface are gradually changed with meteorological rain fall or artificial water spray, to develop an identification display consisting of preset characters or graphics in the drying process of the pavement surface.SOLUTION: A pavement body 1 is constructed by combining a number of block pavement bodies 2 each having a high surface drying rate and a number of block pavement bodies 3 each having a low surface drying rate. The numbers of block pavement bodies 2, 3 have at least water retentivity and/or water permeability. On the surface of the pavement body, sites having different surface drying rates are provided so that a difference between the wet colors on the surface of the pavement body wetted by water develops an identification display X consisting of attention-drawing preset characters, graphics or a combination of them.

Description

  The present invention relates to a pavement having water retention and / or water permeability, and more particularly relates to a pavement that displays a predetermined identification display by a difference in wet color of a pavement surface wet with water. is there.

  In general, asphalt pavements, asphalt concrete pavements, elastic pavements, and the like are known as pavements such as roadways and pavements (see, for example, Patent Document 1 and Patent Document 2).

  In these pavements, especially pavements made of sand or stone, the surface of water may become slightly darker after raining or artificial watering due to weather phenomena .

  This is because the space on the surface of the pavement is filled with water and light is not diffusely reflected, and when dried, the original color is restored. This phenomenon is generally called “wet color”.

  When water on the surface of the pavement penetrates into sand or stones and gives a `` wet color '', if it dries in a relatively short time or water acts for a long period of time, it penetrates into the interior and is quite dry. The wet color does not disappear easily.

  The time until the wet color disappears depends on the amount of water (mainly rainwater) applied, the weather conditions for drying (temperature, humidity), the type of permeated material (ease of water retention, easiness of water transmission) , Thickness) and the structure (whether water permeable or drainage structure) including the base and sides. And this wet color has various speeds of change, but gradually fades and disappears while exhibiting various colors with time, and the same phenomenon occurs repeatedly after raining or watering again To do.

JP 2001-248103 A Japanese Patent Laid-Open No. 2006-219856

  The present invention effectively utilizes the phenomenon that the wet color of the conventional paved road surface gradually changes due to rainfall or artificial watering due to weather phenomenon, and in the process of drying the paved road surface, characters and figures set in advance It is an object of the present invention to provide a pavement that causes a pedestrian or driver on a paved road to be alerted so that an identification display such as the above appears.

  In order to achieve the above object, the present invention is a pavement having at least water retention and / or water permeability, wherein the pavement surface is provided with a portion whose surface drying speed is changed, and the surface of the pavement wetted with water is provided. The gist is that a predetermined identification display is shown by the difference in wet color.

  Here, the portion where the surface drying rate is changed is constituted by a plurality of cavities formed in the pavement, and the surface drying rate is changed by adjusting the porosity of each of the cavities, The identification display set in advance is configured to call attention letters, figures, or a combination thereof.

Further, the pavement is constituted by a combination of block pavement having water retention and / or water permeability, or a combination of seal block pavement in which a part of the surface of the block is sealed, and the pavement is composed of a multilayer of a surface layer and a lower layer. The surface layer is made of a transparent pavement material, and the lower layer is made of a pavement material having water retention and / or water permeability to adjust the water permeability of the lower layer. Moreover, it is preferable that the water permeability of the pavement is 10 ⁻⁴ cm / sec or more.

  By configuring in this way, it is possible to repeatedly display a preset identification display due to the difference in wet color of the surface of the pavement wetted with water, and to ensure the safety of the driver and pedestrian. is there.

  The present invention is a pavement having at least water retention and / or water permeability as described above, wherein the pavement surface is provided with a portion where the surface drying speed is changed, and the wet color of the pavement surface wet with water is provided. Because of this difference, a preset identification display is displayed, so there is no need to write the identification display on the road surface with paint or the like as in the prior art. ”,“ Danger ”, etc. can be alerted, accidents and the like can be prevented, and it can be used repeatedly, which is economical.

It is a partial enlarged plan view of paving bodies, such as a roadway and a pavement, which implemented this invention. It is a partial longitudinal cross-sectional view of the pavement of FIG. (A) is a perspective view at the time of drying of the block pavement which comprises a pavement, (b) is a perspective view which shows the wet color when it gets wet with the water of the block pavement which comprises a pavement. (A)-(d) is sectional explanatory drawing which shows each embodiment in the middle of drying at the time of drying in the block pavement which comprises the pavement which implemented this invention, at the time of rain (at the time of watering).

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a partially enlarged plan view of a pavement 1 such as a roadway or a pavement embodying the present invention. The pavement 1 in this embodiment includes a large number of block pavements 2 having a high surface drying speed and surface drying speeds. It is configured by combining a large number of block paving bodies 3 that are slow.

  The large number of block pavements 2 and 3 are pavements having at least water retention and / or water permeability. The pavement is wet with water by providing a portion of the pavement surface 1A with a changed surface drying speed. According to the difference in wet color of the surface 1A, an identification display X made up of a preset alerting character, figure, or combination thereof is displayed.

  In this embodiment, as shown in FIG. 1, a large number of block pavements 3 having a low surface drying speed are arranged so as to be letters of the alphabet (G). Although the body 2 is arranged and configured, it is not limited to such characters.

  The material of the large number of block pavements 2 and 3, for example, is composed of brick blocks, which are general building materials formed by baking or compressing clay, shale, or mud in a kettle, As shown in FIG. 2, a large number of block pavement bodies 3 that are arranged in advance on a ground W (laying sand) serving as a ground with predetermined intervals, such as letters and figures, that have a particularly slow surface drying speed. The peripheral surface is formed by covering with a large number of block pavements 2 having a high surface drying speed and a water-impermeable film 4 (for example, a sealing material, a caulking material, etc.) in order to provide a difference in the drying speed.

  In this embodiment, the pavement 1 is combined with a large number of block pavements 2 having a high surface drying speed and a large number of block pavements 3 having a low surface drying speed to display the identification display X. When the body 1 is constructed with an integrated pavement material which has been conventionally practiced instead of a large number of block pavements, an identification display X made up of preset letters, figures or combinations for alerting may appear. As shown in FIGS. 3 (a) and 3 (b), an identification display X () is provided by changing the surface drying speed as much as possible, and by the difference in wet color of the pavement surface 1A wet with water from the dry one. It is also possible to show a slip, danger, etc.).

  In other words, it is possible to configure by placing a character in a portion where the wet color is small (water retention: small, dry: fast) and around the material where the wet color is large (water retention: large, dry: slow). .

  4 (a) to 4 (d) are cross-sectional explanatory views showing each embodiment during drying, raining (watering), and during drying in the block pavement constituting the pavement embodying the present invention, The portion where the surface drying speed is changed is constituted by a plurality of cavities 5 formed in the pavement 1, and the surface drying speed can be changed by adjusting the porosity of the cavities 5 respectively. It is a thing.

  For example, in the embodiment of FIG. 4 (a), when the cavity 5 is formed in the pavement 1 and the surface of the pavement 1 is wet during the rain Q (watering) from the dry time, the entire surface becomes a wet color, In the course of drying, a difference occurs in the density of the wet color of the surface between the water retaining portion and the water permeable portion, so that the identification display X appears.

  In the embodiment of FIG. 4 (b), the padding S is filled in the cavity 5 of the pavement 1 to form a high gap, and when the surface of the pavement 1 is wet during the rain Q (watering) from the time of drying, the entire surface becomes wet. In the course of drying, the wetness color of the surface becomes dark, light, and dark between the water retaining portion and the water permeable portion, and a difference is generated to display the identification display X.

  The embodiment shown in FIG. 4C is a combination of the embodiment shown in FIG. 4A and the embodiment shown in FIG. 4B. In the embodiment shown in FIG. The surface drying rate can be changed by combining the cavities 5 with the stuffing S and high voids to adjust the porosity of the cavities 5.

  In this embodiment, there are differences in the wet color of the surface between the water retaining portion and the water permeable portion in three levels of dark, lightest color, light and dark, and dark, and the identification display X is also set by selecting any character, figure, etc. I can do it.

  Further, in the embodiment of FIG. 4 (d), the porosity of the cavity 5 formed in the pavement 1 is changed, and the wet color of the surface is deep, lightest, Differences occur in the three levels of light and dark, and the identification display X can be set.

  In addition, the pavement 1 is composed of a multi-layered surface layer and a lower layer, the surface layer is composed of a transparent pavement material, and the lower layer is composed of a pavement material having water retention and / or water permeability. It is also possible to adjust the water permeability.

Moreover, in said embodiment, it is preferable that the hydraulic conductivity of the pavement 1 is 10 ⁻⁴ cm / sec or more, and if it is 10 ⁻⁴ cm / sec or more, the difference in wet color of the pavement surface 1A is caused in advance. The set identification display can be clearly shown.

  The present invention is a pavement 1 having at least water retention and / or water permeability as described above, wherein the pavement surface 1A is provided with a portion where the surface drying speed is changed, and the surface of the pavement wetted with water is provided. Due to the difference in wet color, the preset identification display X is displayed, so there is no need to write the identification display with paint or the like on the road surface as in the past, and for drivers and pedestrians, for example, It is economical because it can alert attention such as “slip warning” and “danger”, prevent accidents, etc., and can be used repeatedly.

DESCRIPTION OF SYMBOLS 1 Pavement 1A Pavement surface 2 Block pavement 3 Block pavement 4 Impervious film X Identification display W Ground (laying sand)
5 Cavity S Filling Q When it rains (when watering)

Claims (6)

  A pavement having at least water retention and / or water permeability, provided with a portion where the surface drying speed is changed on the surface of the pavement, and identification set in advance by a difference in wet color of the pavement surface wet with water A pavement characterized by displaying the display.   The pavement according to claim 1, wherein the portion where the surface drying rate is changed is constituted by a plurality of cavities formed in the pavement, and the surface drying rate is changed by adjusting the porosity of each of the cavities. .   The pavement according to claim 1 or 2, wherein the preset identification display is configured by alerting characters, figures, or a combination thereof.   The pavement according to claim 1, 2 or 3, wherein the pavement is constituted by a combination of block pavement having water retention and / or water permeability or a seal block pavement in which a part of the surface of the block is sealed. .   The pavement is composed of a surface layer and a lower layer, the surface layer is composed of a transparent pavement material, the lower layer is composed of a pavement material having water retention and / or water permeability, and the water permeability of the lower layer is determined. The pavement according to claim 1, 2, 3 or 4, which is adjusted. The pavement according to claim 1, 2, 3, 4 or 5, wherein the water permeability of the pavement is 10 ^-4 cm / sec or more.

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