JPH0713361B2 - Elastic blocks for paving and elastic pavement structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to athletic facilities such as tennis courts, volley courts, basketball courts, baseball fields, and soccer fields, or floor surfaces of public plazas such as exhibition halls and parks. The present invention relates to an elastic block suitable as a pavement material for a golf course, a walking path, a jogging path, or the like, or a base material for an artificial lawn sports field (with or without sand), and an elastic pavement structure using this block.

[Conventional technology]

The soil pavement structure constructed from natural earth and sand materials such as clay or Antuca, which have been widely used as surface pavement materials for athletic sports facilities such as tennis courts and volleyball courts, once the rainfall hits Due to the water retention property of the material, the ground surface is impaired, and the ground surface is severely roughened by the athlete's trampling. Therefore, in the case of tennis, etc., where the smoothness of the ground surface is closely related to the performance of the game, the game must be interrupted immediately, and it takes a lot of time and effort to carefully repair the rough ground surface.

Therefore, recently, in order to eliminate the above-mentioned drawbacks of the soil pavement structure and to save labor for maintenance such as early drainage and surface smoothness after rainfall, rubber particles crushed from waste rubber products (hereinafter, rubber chips and After laying on the base an elastic layer that is bonded with a binder such as urethane, and then applying a paint such as urethane that is arbitrarily colored to the surface to finish, or thickly coating urethane etc. to form an elastic surface layer. The developed elastic pavement structure has been developed, and it can be used for athletics facilities, floors of public plazas such as exhibition halls and parks, and sidewalks on premises.
It is also used in the walking paths of golf courses.

By the way, as is clear from the motives for its development, the elastic pavement structure is mainly composed of a non-water-absorbing material, so there is no problem such as mud formation due to the absorption of rainwater unlike the conventional soil pavement structure. However, on the other hand, the surface gets wet even with a small amount of rainfall, so that the surface of the ball gets wet and the gut of the tennis racket is loosened. In addition, due to the high surface friction coefficient peculiar to rubber in the dry state, a sudden braking action may be exerted on the rubber sole, which causes the player's legs and waist to fatigue relatively early, while slippage in the wet state may occur. It is easy and there is a risk of falling. The conventional soil pavement structure is better than the conventional one in terms of surface water wetting and physical education and health during these small rainfalls.

Therefore, the applicant has previously utilized the respective advantages of the elastic pavement structure and the soil pavement structure using rubber chips, has an appropriate surface slip property and water absorbency, and greatly saves maintenance and labor. Has developed a new elastic pavement structure (Japanese Patent Application No. 61-44827 (Japanese Unexamined Patent Publication No. 62-202101))
reference). The structure is outlined. A large number of rubber chips are bound with a binder made of a polymer material such as urethane so as to form fine voids between particles, and a plurality of transparent particles having a pore size much larger than the above voids are formed on the surface thereof. A rubber chip block body having holes formed therein is laid out on the ground so as to be formed substantially flat, and then the through holes of the block body are filled with sand, and sand is also formed on the surface of the block body. It is laid by spraying. According to this elastic pavement structure, the sand layer on the surface imparts appropriate smoothness to the surface of the stadium, and at the same time, exhibits a water absorbing effect on the surface during a small amount of rainfall. On the other hand, when there is a large amount of rainfall, the rainwater is rapidly discharged to the ground surface through the fine holes between the through holes and the rubber chips to prevent the stadium surface from becoming muddy.

[Problems to be solved by the invention]

As described above, according to this elastic pavement structure, the block bodies can be simply laid on the base by utilizing the weight of the through holes in each block body and the sand filled or scattered on the surface thereof, and thus the construction can be performed. Although it has the advantage that the effort can be further simplified, it is also related to the thickness of each block body and the amount of sand filled or scattered in the block body in relation to this, and also to the degree of the intensity of the competition action, The block body may move and be displaced during laying construction or after completion. In order to prevent this completely, each block body has to be locked or bonded to the base surface, but then,
The advantages of the so-called "laying-back method" are lost.

Therefore, the present invention solves the above problems, and uses an elastic block suitable as a ground surface building material that can be easily and stably laid on a base due to the weight of itself and the sand to be filled, and the block. An object of the present invention is to provide an elastic pavement structure having excellent water permeability and excellent surface sliding property.

[Means for solving problems]

In order to achieve the above object, in the elastic block for paving of the present invention, a large number of vulcanized rubber particles are preferably bound with a binder of a polymer material so that fine voids are formed between the particles. On the lower surface of the elastic layer consisting of, a mineral layer formed by binding mineral particles with a binder such as a polymer material is integrally laminated, and a plurality of holes having a predetermined depth are formed on the surface of the elastic layer. I am trying to drill.

Further, in the elastic pavement structure of the present invention, the above elastic blocks are formed to be substantially flat and laid in close contact with each other on the base, and the holes of the elastic blocks are filled with sand, and further, the surface thereof is predetermined. It is designed to form a sand layer with a thickness of.

[Action]

Since the mineral layer is integrally laminated on the lower surface of the elastic layer,
The self-weight of the block increases, and in combination with the weight of the sand that is scattered and filled on the surface and in the holes, the stability when laid on the base is further enhanced. The rainwater is absorbed by the upper sand layer. When a large amount of rainfall occurs, rainwater is drained through the holes formed in the elastic block and the minute voids in the block. Furthermore, the sand layer provides a proper sliding performance on the stadium surface.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

1 to 3 show an elastic pavement block constructed according to the present invention. That is, this elastic block 10 is, for example, a predetermined shape having a length of 0.15 to 1 m, a width of 0.5 to 2 m, and a thickness of about 5 cm, and in this embodiment, it is made of a rectangular block body.
A plurality of holes 12 ... Having a predetermined depth of about 0.5 to 5 cm are distributed substantially evenly. In this case, the elastic block 10
Dovetail-shaped engaging projections 13 are formed on the two adjacent sides of the dovetail, and dovetail-shaped engaging grooves that cooperate with the engaging projections 13 of the elastic blocks that are arranged adjacently on the remaining two sides. 14 are provided.

The elastic block 10 includes an elastic layer 11a and a mineral material layer 11b integrally formed on the lower surface side thereof. The elastic layer 11a is
It is composed of vulcanized rubber particles 15 having a particle size of about 1 to 30 mm, which are bonded with a binder made of a polymer material (for example, a urethane binder) so that fine voids are formed between the particles. From the perspective of water permeability, the porosity is 20-40.
% Is preferable.

On the other hand, the mineral layer 11b is preferably made of sand or slag having a particle size of about 5 to 20 mm, mineral granules 16 such as crushed stone and glass beads as a binder made of a polymer material or cement, silica sol, an inorganic material such as water glass. It is composed of a binder and a binder. The mineral layer 11b is bonded to the lower surface of the elastic layer 11a so as to be integrated, but as a bonding means, an adhesive may be used, or both binders made of the same polymer material may be used. It is also possible to simultaneously form the elastic layer 11a and the mineral material layer 11b in the same molding die to form an integrated body. When the holes 12 are blind holes as shown in FIG. 2, the mineral layer 11b is porous with fine voids like the elastic layer 11a in order to ensure water permeability. However, it is preferable that the elastic layer 11a and the mineral layer 11b are not necessarily porous if the pores 12 are through holes that penetrate to the bottom surface of the mineral layer 11b as shown in FIG. Alternatively, it may be non-porous.

The holes 12 may be either blind holes or through holes as described above, but they are even over the entire surface of the block so as not to adversely affect the movement performance such as the bouncing characteristics of the ball, and, It is preferable to form the holes at a distance as short as possible. Further, the hole 12 is not limited to a circular shape, and may be formed in a straight line shape, a zigzag shape, or a wave shape along any of the vertical and horizontal directions of this block.

FIG. 4 shows an elastic pavement structure 20 in which the elastic block 10 is laid on a base 30 finished to be substantially flat.

That is, the elastic pavement structure 20, for example, the gravel layer 30a
And a plurality of the elastic blocks 10 on the base 30 which is made of gravel, sand and cement, and which is formed by sequentially laminating the surface layer 30b compacted by the rolling operation so that the elastic layer 11a is on top. And lay them closely, each hole 1
2 is filled with sand 21, and a sand layer 22 is formed over the entire upper surface of each elastic block 10 to have a predetermined thickness, for example, about 0.2 cm. In addition,
As the sand used for this, considering the drainage performance, the solidification phenomenon due to water absorption and treading pressure and the movement of sand due to wind force and play, etc., the particle size is about 0.1 to 1.8 mm, preferably 0.3 to 0.6 mm and contains 60% or more. It is desirable to be out. Further, the thickness of the sand layer 22 is preferably about 0.1 to 0.5 cm in order to exhibit an appropriate surface sliding performance.

〔effect〕

As described above, in the elastic block 10 of the present invention,
Since the mineral layer 11b is integrally laminated below the elastic layer 11a, its own weight increases, and its stability is further improved when it is laid on the base 30. And low cost. In addition, in the elastic pavement structure 20 using this elastic block 10, each hole
Since a large amount of sand 21 is filled in the sand 12, the increase of the self-weight due to the mineral layer 11b and the weight of the sand 21 are combined, and the elastic block 10
Will be firmly fixed on the base 30. Therefore, it is possible to save the trouble of fixing each elastic block 10 on the base 30 with an adhesive material, a pile material or the like.

On the other hand, in the case of a small amount of rainfall, the sand layer on the elastic block 10
Since 22 absorbs the rainwater, various troubles due to the slipping phenomenon of the soles of shoes and the wetness of the ball are prevented, and therefore it is not necessary to interrupt the game in a hurry, and the sand layer 22 can be formed even in the case of a large amount of rainfall. It absorbs rainwater and drains through the holes 12 formed in the elastic block 10 and the numerous fine voids in the block body 10 to the underlying base 30, so that it is possible to use it for a long time as in the case of a conventional soil pavement structure. It will not be in a muddy state, and if only the sand layer 22 on the surface is smoothed evenly with an appropriate leveling tool such as a site brush, use can be resumed relatively early.

Furthermore, it has better drainage than the pavement structure that is constructed by laying down cement-concrete interblocking decorative blocks, which are widely used in public plazas such as parks and exhibition halls. Also, because it is soft, even if a person accidentally falls, it does not break the obstacle.

In general, according to the present invention, compared with the conventional elastic pavement structure made of rubber chips, it is possible to exhibit a sliding resistance suitable for a comfortable athletic competition, and it has a drainage performance which is superior to the conventional natural soil pavement structure and is sufficiently suitable for practical use. It is possible to provide a soft elastic pavement structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an elastic block according to the present invention, FIG. 2 is an enlarged sectional view of the elastic block, and FIG.
FIG. 4 is an enlarged sectional view showing another embodiment of the same elastic block, and FIG. 4 is a partial sectional view showing one embodiment of the elastic pavement structure according to the present invention. In the figure, 10 is an elastic block, 11a is an elastic layer, 11b is a mineral layer, 12 is a hole, 13 is an engaging protrusion, 14 is an engaging groove, 15 is a vulcanized rubber granule, 16 is a mineral granule, 20 is an elastic pavement structure, 21 is sand, 22 is a sand layer, and 30 is a foundation.

Claims (7)

[Claims] 1. An elastic layer formed by binding a large number of vulcanized rubber particles with a binder made of a polymer material, and an elastic layer formed by connecting mineral particles with a binder made of a polymer material or an inorganic material. Elastic block for paving, characterized in that the block body is provided with a mineral layer integrally laminated on its side, and a plurality of holes having a predetermined depth are formed in the upper surface of the block body. 2. The elastic pavement block according to claim 1, wherein fine voids are formed between the respective particles of the elastic layer and the mineral material layer. 3. An elastic pavement block according to claim 1 or 2, wherein the holes are blind holes. 4. The elastic paving block according to claim 1, wherein the hole is a through hole penetrating from the elastic layer to the bottom surface of the mineral layer. 5. The pavement elastic block according to any one of claims 1 to 4, wherein the block body has concave and convex side surfaces that can be fitted to adjacent block bodies. 6. A plurality of elastic blocks laid in intimate contact with each other on a generally flat base, each elastic block comprising a large number of vulcanized rubber particles bound with a polymeric binder. And an inorganic layer which is formed by binding mineral particles with a binder of a polymer material or an inorganic material and is integrally laminated under the elastic layer, and is formed on the upper surface of the elastic layer. An elastic pavement having a plurality of holes of a predetermined depth, wherein the holes are filled with sand, and a sand layer having a predetermined thickness is formed on the surface of the elastic layer. Structure. 7. The elastic pavement structure according to claim 6, wherein each of the elastic blocks is laid and fixed on the base by the weight of the sand in the hole and the sand layer on the surface thereof.