JPH08209604A - Flexible pavement and its block - Google Patents

Abstract

PURPOSE: To provide a flexible pavement by using beautiful natural stones. CONSTITUTION: A natural stone is cut into hexahedron to form a block 1. A cushion material 2 is bonded on adjacent upright faces 1', 1' on one hand through an interval t in the horizontal direction by using adhesive 3, and adjacent upright faces 1", 1" on the other hand are formed flat without bonding the cushion material 2. Sand joint is provided in the interval t on a flat sand layer on a road surface to oppose the adjacent upright faces 1', 1' on one hand against the adjacent upright faces 1", 1" on the other hand so as to lay the block 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible pavement, that is, an interlocking pavement and a block thereof, which are provided by a grain joint.

[0002]

2. Description of the Related Art Flexible pavements, such as interlocking, using grained ground are widely used for pavements such as sidewalks and parks.

The feature of interlocking is that it is easy to construct,
It is cheap. Pavement of natural stone, which has excellent durability and aesthetics, is expensive because it takes a lot of time and effort to build a joint with the base of the stone and the roadbed with mortar to prevent the natural stone from being destroyed by expansion. It doesn't spread because of price problems. In addition, the mortar joint has no cushioning property, and there is a problem in that it is pushed from both sides by a chain reaction of natural stone expansion and causes a phenomenon of pushing up as shown in FIG.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to easily join joints to natural stone blocks, and to make construction possible with the same sand joint as interlocking, and to prevent the pavement from being destroyed due to natural stone expansion. And

[0005]

In order to achieve the above object, the present invention cuts natural stone into a hexahedron to form a block, and a cushioning material is horizontally attached to one of the adjacent upright surfaces with a space therebetween. The other adjacent upright surface is formed flat without adhering a cushion material to the other adjacent upright surface, and one adjacent upright surface on the other side and the adjacent upright surface on the other side are formed by interposing sand joints at the above intervals on the flat sand layer on the roadbed. Flexible pavement made by placing and facing each other is cut into hexahedrons to form blocks, and the cushioning material is bonded to one adjacent upright surface with a horizontal gap with an adhesive, and the other adjacent The upright surface is composed of a flexible pavement block which is formed flat without adhering a cushion material.

[0006]

According to the present invention, a cushion material is interposed between one adjacent upright surface and the other adjacent upright surface of a hexahedral natural stone block facing a flat sand layer on a roadbed, and a horizontal direction between the cushion materials is provided. And the natural stone block is placed on a flat sand layer.

Therefore, the bottom surface of the natural stone block expands independently of the top surface of the flat sand layer, and the distance between one adjacent upright surface and the other adjacent upright surface due to the expansion is determined by the compression of the cushion material and the formation of the sand joint. Contracts for upward movement,
The expanded natural stone blocks do not come into direct pressure contact with each other, but the load due to the direct contact is released by the contraction of the cushion material and the sand joint.

[0008]

EXAMPLE Marble, granite (granite) and other natural stones are cut into hexahedrons with a cutter to form brick-shaped blocks 1. This block 1 stands upright with four faces perpendicular to each other,
The upper and lower two surfaces are parallel horizontal surfaces.

One adjacent upright surface 1 ', 1'which is orthogonal to each other.
A cushion material 2 made of wood chips, foamed vinyl chloride, rubber, thermoplastic hardened vinyl chloride, etc. is bonded by an adhesive 3 at a horizontal interval t for sand joints as shown in FIGS. 1, 2 and 3. The upper end of the cushion material 2 is connected to the upright surfaces 1 ', 1'
An upper and lower sand joint space s is provided between the upper edge 1a and the upper edge 1a. The hardened PVC plastically deforms due to a rise in temperature due to solar heat, and is pressed by the blocks 1 and 1 together with the sand joints 6 to be deformed.

The other adjacent upright surfaces 1 ″ orthogonal to each other,
1 "is formed flat without bonding the cushion material 2 (see FIG. 4).

The natural stone block 1 thus constructed has a cushion material 2 on the upper surface of the flat sand layer 5 in a staggered manner as shown in FIG.
On the other adjacent upright surfaces 1 ″, 1 ″. Then, the space t and the space t are filled with sand to form the sand joints 6.

The flat sand layer 5 is laid on the upper roadbed 4,
The upper subbase 4 is laid on the lower subbase 4 ′, and the lower subbase 4 ′ is laid on the subgrade 7.

The shape of the cushioning material 2 may be a strip shape (FIGS. 1 and 3), a circular shape (FIG. 2) or another shape.
As shown in FIG. 3, the lower end of the cushion material 2 is an upright surface 1 ',
1 'can be matched with the lower edge 1b. As shown in FIGS. 1 and 3, a joint filling space s' can be provided between the lower end of the cushion material 2 and the lower edge 1b of the upright surfaces 1 ', 1'.

[0014]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a cut hexahedron block made of natural stone can be provided with joints and sand joints by a cushioning material, which is a flexible pavement made of natural stone and the expansion of natural stone by solar heat because it is the block. The cushioning material and the sand joint serve as a cushioning material, and there is an effect that the blocks can be kept flat without being pushed up, and the appearance of natural stone can be kept without the possibility that the pavement is destroyed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a natural stone flexible pavement block of the present invention.

FIG. 2 is a perspective view of the block using a circular cushion material.

FIG. 3 is a perspective view of a block using a strip-shaped cushion material.

FIG. 4 is a plan view of FIG. 1;

FIG. 5 is a vertical sectional view of a pavement state.

FIG. 6 is a plan view of FIG.

FIG. 7 is a vertical cross-sectional view of a conventional natural stone pavement in a broken state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Natural stone hexahedron block 1 ', 1' One adjacent upright surface 1 ", 1" The other adjacent upright surface 2 Cushion material t Interval 3 Adhesive 4, 4 'Roadbed 5 Flat sand layer 6 Sand joint

Claims (2)

[Claims] 1. A natural stone is cut into a hexahedron to form a block, and a cushion material is adhered to one adjacent upright surface with an adhesive in the horizontal direction with a gap therebetween, and a cushion material is attached to the other adjacent upright surface. A flexible pavement that is formed flat without adhering, and is placed on a flat sand layer on a roadbed so that one adjacent upright surface and the other adjacent upright surface face each other with intervening sand joints. 2. A natural stone is cut into a hexahedron to form a block, a cushion material is bonded to one adjacent upright surface with an adhesive in the horizontal direction with a gap, and a cushion material is attached to the other adjacent upright surface. Flexible pavement block that is formed flat without adhering.