JP3101756U - Sidewalk structure - Google Patents

Abstract

An object of the present invention is to provide a sidewalk structure capable of effectively utilizing coral resources, preventing splashes and the like, having good walkability, and being constructed easily and in a short time.
Kind Code: A1 A coral aggregate 12 is formed by grinding a coral lump to form a corner. From the sidewalk structure 10 in which the coral aggregate 12 is laid while being bonded to each other on the roadbed 14 only through the synthetic resin adhesive 16 so as to form a required gap 18 to form a sidewalk surface 24 having a rough uneven surface. Be composed. Coral can be effectively used while maintaining the characteristics of porous and strong coral, and a sidewalk having a porous structure can be constructed, thereby preventing splashing, noise, and good walking ability.
[Selection diagram] Fig. 1

Description

  The present invention relates to a sidewalk structure using corals.

Corals with unique colors and shapes are widely distributed mainly in warm waters, creating a favorable natural landscape. Corals are porous and relatively hard.In recent years, however, we have been trying to effectively utilize abundant coral resources that can be easily obtained in the temperate waters, instead of leaving them in nature. The movement to do it is also increasing. As a method of using corals, for example, Japanese Patent Application Laid-Open No. 9-88055 proposes using coral reefs for roads, airfields, and the like. In Japanese Patent Application Laid-Open No. 9-88055, a pipe is driven into a hollow inside a coral reef that is exposed on the sea surface and turned into land, and after filling the filler through the pipe, high-pressure gas is injected into the hollow to fill the hollow filler. It was intended to reinforce the coral ground by diffusing it around and hardening it, and to use the coral reef for roads and the like.
JP-A-9-88055

  However, the use of coral reefs described in Japanese Patent Application Laid-Open No. 9-88055 is limited to giant coral reefs that are exposed on the sea surface and landed. That is, since the size of the available coral reefs and the place of use thereof are limited, various coral reefs cannot be widely used. Further, in the case of this document, many steps such as driving of a pipe, filling of a filler, press-in of a high-pressure gas, and the like are required at the time of reinforcement work, and various types of heavy equipment, tools, materials, and the like are also required. Furthermore, the construction is large and requires a lot of manpower, labor, construction period and cost, and is not practical for effective use of corals.

  On the other hand, conventionally, when constructing a sidewalk, pavement is often made of concrete or the like. Conventional concrete pavement has low water permeability and drainage is poor, so it is easy for puddles to form on the sidewalk during rainfall, and when people walk or pass by bicycle, the water splashes and pedestrians or other people It was difficult to walk, because it got wet and dirty, and even slipped with water. Furthermore, the concrete pavement has a problem that the sound is apt to sound and the inorganic texture of the concrete impairs the natural scenery. Therefore, it is strongly desired to construct a sidewalk that has good walkability and also considers nature and living environment.

  The present invention has been made in view of the above-mentioned conventional problems, and aims to make effective use of coral while utilizing the material properties of coral, and is simple, short, and practical in that it can be constructed at low cost. It is to provide a sidewalk structure.

  In order to solve the above problems, the present invention forms a required gap on a roadbed through a synthetic resin adhesive only by forming a coral aggregate formed by grinding a coral lump to obtain a corner. And a sidewalk structure having a rough uneven surface formed by being laid while adhering to each other. The size of the gap between the bonded coral aggregates may be arbitrarily determined, and also depends on the size and shape of the coral aggregate. When the particle size of the coral aggregate is adjusted to the same level, the unevenness of the sidewalk surface is small, the gap is formed at a substantially constant ratio as a whole, and the unevenness of the strength, water permeability, sound absorption and the like is small. The configuration of the roadbed may be one composed of crushed stone, gravel, sand, concrete, or the like, one in which they are laminated in two or more layers, or any other configuration. For example, a structure having water permeability may be used when water that has passed through the gaps in the coral aggregate is allowed to pass through the ground. Alternatively, the roadbed may be formed with an impermeable structure, and water may flow over the roadbed to collect water in a gutter or the like. Various types of coral lump can be used regardless of size.

  Moreover, the particle size of the coral aggregate may be 5 to 15 mm.

  Further, the synthetic resin adhesive may be made of an epoxy resin. The epoxy resin may be mixed with various curing agents according to the form of the sidewalk and the construction conditions to adjust the effect speed, durability, and the like.

  The sidewalk structure of the present invention combines coral aggregates formed by crushing coral lump to form corners and bonding them together to form the required gap on the roadbed with synthetic resin adhesive. The coral aggregate itself as an individual element that forms the sidewalk is porous, and the sidewalk structure has a porous structure that is connected only through a synthetic resin adhesive. It has water permeability and water retention, prevents puddles on the sidewalk surface, prevents wetting by water splashes, dirt, etc., and has good walking properties, high sound absorption, and low noise. Can be prevented. Furthermore, it is possible to obtain a sidewalk surface having durability and a good landscape. In addition, the construction can be performed easily, in a short time and at low cost, and the coral resources can be effectively used practically. By grinding the coral aggregate to make corners, the area of contact between the coral aggregates is increased, the adhesiveness of the synthetic resin adhesive is good, and the coral aggregate itself is also improved in resistance to abrasion, resulting in a high strength sidewalk. The structure can be formed, and the sidewalk surface is formed with rounded irregularities, so that there is little risk of injury or the like.

  In addition, by setting the particle size of the coral aggregate to be 5 to 15 mm, a sidewalk structure having a gap capable of effectively exhibiting water permeability, sound absorption and the like can be specifically realized.

  In addition, since the synthetic resin adhesive is made of an epoxy resin, it has good adhesiveness and is hardened at room temperature, so that it is easy to construct, and has high water resistance and durability, and can maintain the sidewalk for a long time.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The road structure of the present invention is a sidewalk structure using corals, and a coral aggregate formed by crushing a coral lump and forming an angle is laid on a roadbed through a synthetic resin adhesive to form a sidewalk surface. Is a sidewalk structure having a porous structure.

  1 to 3 show one embodiment of the sidewalk structure of the present invention. As shown in FIGS. 1 and 2, the sidewalk structure 10 according to the present embodiment is configured such that the coral aggregates 12 are bonded to each other via the synthetic resin adhesive 16 so as to form a required gap 18 on the roadbed 14. It is laid and provided. In the present embodiment, the sidewalk structure 10 is provided, for example, in a region separated by a curb 22 adjacent to the roadway 20 in FIGS. 1 and 2. The roadbed 14 of the sidewalk structure 10 may be, for example, one that is widely provided at the time of constructing a sidewalk. For example, a roadbed 14 in which crushed stone, gravel, sand, or concrete is laid on excavated and grounded ground may be used. Become. The roadbed 14 is arbitrarily configured in consideration of durability, water resistance, water permeability, and the like according to the form of the sidewalk structure to be constructed. For example, when water permeating the internal gap 18 of the porous structure from the side of the sidewalk is permeated to the ground, a water-permeable structure may be used.

  In the present embodiment, the coral aggregate 12 is laid with a certain thickness on the uppermost layer side of the sidewalk structure 10 and forms an uneven sidewalk surface 24 on the upper surface side. By using coral, a natural resource, on the sidewalk, the landscape can be improved as compared with inorganic materials such as concrete. The coral used for the coral aggregate uses, for example, a lump of coral. In this embodiment, the coral aggregate 12 is, for example, a coral crushed piece formed by crushing a lump of coral, and is ground and polished to obtain a rounded granular shape. However, for example, the one set to 5 to 15 mm is used. The coral aggregate 12 is formed, for example, by crushing a coral lump through a crusher or the like to a particle size of about 10 mm, throwing the crushed coral into a rotating drum or the like, and rotating the coral lump. If necessary, cobblestone-shaped hard natural rock may be introduced into the rotary drum. Then, the coral aggregate 12 is sieved or the like to adjust the particle size to the above-mentioned size of 5 to 15 mm. By polishing the coral and making corners, the contact area between coral aggregates is widened, the adhesiveness by the synthetic resin adhesive is good, and a sidewalk structure with high strength can be formed. Since the sidewalk surface is formed with rounded irregularities, there is little risk of injury. The coral aggregates 12 are laid on the roadbed 14 with a thickness of, for example, about 10 to 40 mm while being bonded to each other via a synthetic resin adhesive. At this time, the sidewalk structure 10 has a porous structure due to the gaps 18 formed between the coral aggregates 12 connected to each other. As a result, water and air can pass inside the sidewalk structure, and the occurrence of puddles can be prevented, and wetting, dirt, slippage, etc. due to splashes of water when walking can be prevented, and walking properties are good. At the same time, it is expected to have the effect of preventing urban flooding and noise absorption due to sound absorption. If the gap 18 is too large, the sidewalk becomes structurally fragile, so that the coral aggregate is spread to some extent densely. As described above, the particle size of the coral aggregate is preferably 5 to 15 mm. By setting the particle size in this range, the particle size of the coral aggregate is uniform to some extent, so that the laying work and the like can be easily performed and the water permeability can be effectively increased. It is possible to design a good porous structure that can exhibit properties and sound absorption. For example, when the particle size of the coral aggregate is small, the voids of the coral itself and the gap 18 formed between the coral aggregates are filled with the synthetic resin adhesive 16, and the porous structure has an effect of water permeability and the like. Is reduced. On the other hand, if the particle size of the coral aggregate is large, the unevenness of the sidewalk surface becomes severe, and it becomes difficult to walk or stumbles, resulting in poor walking ability.

  As shown in FIG. 4, the coral aggregate polished with a corner has high water absorption and is porous, and has a higher resistance to mechanical abrasion than unpolished coral aggregate without a corner. . By using this polished coral aggregate for the sidewalk structure, it is possible to expect the effects of preventing puddles, preventing urban flooding, preventing noise due to sound absorption, etc., as well as maintaining the sidewalk for a long period of time, and configuring a good sidewalk. .

  As shown in FIG. 1, the synthetic resin adhesive 16 adheres coral aggregates while forming a required gap 18. In the present embodiment, for example, an epoxy resin is selected as the synthetic resin adhesive 16. Epoxy resin has good adhesiveness and cures at room temperature, so it has good workability on site, and has high water resistance and durability, and can maintain the sidewalk for a long time.

  When manufacturing the present embodiment, as shown in FIG. 3, the coral lump is transported in advance to a manufacturing plant or the like, and the coral lump is dried, crushed by a crusher or the like, polished through a rotary drum or the like, and polished. To form round coral aggregates. The coral aggregate is sieved, for example, to a particle size of about 5 to 15 mm. On the other hand, at a sidewalk construction site, a roadbed is formed in advance. Then, for example, at the work site, the above-mentioned coral aggregate and epoxy resin are put into a stirrer or the like, mixed and stirred, and the epoxy resin is attached to the surface of the coral aggregate. The coral aggregate to which the adhesive has been adhered is, for example, manually spread on a roadbed via a scoop or the like, and finally the surface is finished with a trowel or the like. In this manner, a sidewalk surface having irregular irregularities due to the coral aggregate having the above particle size is formed, and a porous sidewalk structure is constructed. Thereby, water and air can pass through the gap of the coral itself and the gap 18 inside the sidewalk structure, it is possible to prevent the occurrence of puddles, and it is possible to prevent wetness, dirt, and slippage caused by splashing water when walking, etc. Good walkability can be obtained. In addition, since it has sound absorbing properties, generation of noise can be prevented. Further, the sidewalk structure can be maintained for a long period of time due to the coral abrasion resistance and the durability of the epoxy resin. Further, the only materials required at the sidewalk construction site are coral aggregate and a synthetic resin adhesive, and the construction can be performed easily, quickly, and at low cost. In the present embodiment, the case where the sidewalk structure is provided adjacent to the roadway has been described, but the sidewalk structure may be used in various other modes such as a park and a promenade. Also, the coral aggregate laying work may be performed using a machine or a heavy machine, but it is preferable that the coral aggregate be broken when a high pressure is applied to the coral aggregate. .

FIG. 4 shows unpolished coral aggregates without corners and other comparative examples of the density, water absorption and abrasion loss of polished coral aggregates with corners. 2 shows a comparative example of limestone and andesite used as a material. For example, in FIG. 4, when comparing the water absorption, the polished coral aggregate (Example) is 3.66%, the limestone (Comparative Example 2) is 0.87%, and the andesite (Comparative Example 3) is 1.15%. Since the polished coral aggregate has a high water absorption, it can be confirmed that the coral aggregate is porous with many voids. Also, comparing the surface dry densities, the polished coral aggregate (Example) was 2.507 g / cm ³ and the andesite (Comparative Example 3) 2.684 g / cm ³ , and the polished coral aggregate was It can be confirmed from the fact that the surface dry density (specific gravity) is small, the porous body has many voids. Further, when comparing the abrasion loss, the polished coral aggregate (Example) is 23.0%, the unpolished coral aggregate (Comparative Example 1) is 28.2%, and the limestone (Comparative Example 2) is 34.0%. It can be confirmed that the coral aggregate has a certain degree of abrasion resistance, and the polished coral aggregate has a higher abrasion resistance than the unpolished one. That is, the polished coral aggregate having corners is porous and has high resistance to mechanical abrasion. By using coral aggregate for the sidewalk structure, effects such as long-term maintenance of the sidewalk, prevention of occurrence of puddles, prevention of urban flooding, and prevention of noise due to sound absorption can be expected, and a favorable sidewalk can be constructed.

  The sidewalk structure of the present invention described above is not limited to the above-described embodiment, and includes modifications of the present invention that do not depart from the essence of the present invention described in the claims for utility model registration.

It is principal part sectional explanatory drawing of the sidewalk structure which concerns on embodiment. FIG. 2 is a partial perspective explanatory view of the sidewalk structure of FIG. 1. It is a simplified flowchart of a construction process. It is a comparison table of the property according to the difference of the material.

Explanation of reference numerals

Reference Signs List 10 sidewalk structure 12 coral aggregate 14 roadbed 16 synthetic resin adhesive 18 gap 24 sidewalk surface

Claims (3)

  A coral aggregate formed by crushing a crushed coral lump so as to take corners is laid down while adhering to each other so that a required gap is formed on the roadbed only through a synthetic resin adhesive. A sidewalk structure characterized by forming a sidewalk surface having an uneven surface.   The sidewalk structure according to claim 1, wherein the particle size of the coral aggregate is 5 to 15 mm.   3. The sidewalk structure according to claim 1, wherein the synthetic resin adhesive is made of an epoxy resin.

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