JPH08296202A - Pavement plate and manufacture thereof - Google Patents

Abstract

PURPOSE: To provide a pavement plate having a large bending strength and high durability without generating a clogging by partially overlapping multiple flat small pieces with each other, and bonding them with a clearance so as to form a plate-shaped body. CONSTITUTION: Multiple flat small pieces 18, 18 are partially overlapped with each other and bonded to each other with a clearance so as to form a plate- shaped body 22 to be used for a pavement plate. A pavement plate can be formed of a layered body formed by bonding this plate-shaped body 22 and a second plate-shaped body 26, which is formed by bonding multiple particles 24, 24 with a clearance. Furthermore, multiple rigid particles are arranged between the multiple flat small pieces 18 of the first plate-shaped body 22 so as to be bonded to the small pieces 18. This plate-shaped body 22 can be obtained by filling the mixture of the rigid particles and the binder at a quantity enough for adhering them to each other in a form, and oscillating, pressurizing, heating it, and thereafter, removing from the form. Dimension of the small piece 18 is desirably set to 1-3cm of width, 3-5cm of length and 0.2-0.5cm of thickness.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a sidewalk, a park, a promenade,
The present invention relates to a plate-shaped or block-shaped paving plate used for paving a cycling road, a jogging road, etc. and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as a pavement plate, a first plate-like body in which a large number of elastic particles such as rubber chips are bonded to each other with a gap, and a large number of rigid particles such as crushed stone have a gap. It has been proposed to join the second plate-shaped bodies, which are joined together, to each other.

[0003]

In the conventional paving with a pavement plate, a large number of pavement plates are respectively provided with a first plate-like body made of elastic granules and a second plate-like body made of rigid granules vertically. It is formed by laying it so that its sides are in contact with each other. The second plate-like body made of the rigid granules acts as a weight of the pavement plate, and the first plate-like body made of the elastic granules defines a paving surface having a cushioning property.

In the conventional paving board, water such as rainwater passes through the voids between the elastic particles of the first plate and the rigid particles of the second plate. Forgive Due to this water permeability or drainage property of the pavement plate, generation of water pools on the pavement surface that hinders walking, running, etc. or causes overturning, etc. is prevented.

By the way, the water flowing into the voids of the first plate-like body contains mud, sand, dust and the like on the pavement surface. Water containing mud, sand, dust, and the like sequentially flows downward through a large number of voids in the pavement plate, and during this time, the mud, sand, dust, and the like adhere to the individual elastic particles. Therefore, with the passage of time, the mud,
There has been a problem that individual voids are blocked by sand, dust, etc., causing clogging of the pavement board and reducing the drainage performance of the pavement.

An object of the present invention is to provide a paving board which does not cause clogging. Another object of the present invention is to solve the problem in paving with the conventional paving plate.

[0007]

The paving board according to the present invention comprises:
The plate includes a plurality of flat pieces partially overlapped with each other and connected to each other with a gap. Also,
Another pavement plate is formed by stacking and joining the plate-like body to a second plate-like body in which a large number of particles are bonded to each other with a gap. Further, another pavement plate is a plate-shaped article in which a large number of flat small pieces are partially overlapped with each other and are connected to each other with a gap, and a large number of particles are arranged between the small pieces and are connected to the small pieces. It consists of a body.
Further, another paving board is formed by joining the plate-shaped body and the second plate-shaped body in two layers.

As the flat small piece, a wood chip covered with a synthetic resin, a wood chip impregnated with a synthetic resin, or a chip made of a synthetic resin can be used. The width, length and thickness of the flat piece are preferably 1 to 3 cm, 3 to 5 cm and 0.3 to 0.5 cm, respectively.
And

A large number of small pieces of the first plate-like body and a large number of particles of the second plate-like body are bonded by a binder containing a thermosetting resin having a property of undergoing a crosslinking reaction with each other. Can be done. According to this, the said 1st plate-shaped body and the said 2nd plate-shaped body are firmly joined to each other via the substance produced by the crosslinking reaction of both thermosetting resins.

As the particles arranged between the large number of flat small pieces, elastic particles such as rubber chips and rigid particles such as crushed stone can be selectively used. Further, preferably, the granular material of the second plate-shaped body is made of rigid granular material. Further, preferably, the wood chips are impregnated with a coloring agent.

In the method for manufacturing a pavement board of the present invention, a mixture of a large number of flat small pieces and a binder in an amount sufficient to bond the small pieces to each other is placed in a mold, and after vibrating the mold,
Applying hot pressure to the mixture, followed by demolding. Further, the method includes placing a number of binder coated rigid granules in the form prior to or after placing the mixture in the form.

Another manufacturing method is to put a mixture of a large number of flat pieces and a sufficient amount of a binder for adhering a large number of granules in a mold, and after vibrating the mold,
Applying hot pressure to the mixture, followed by demolding. Further, the method includes placing a number of binder coated rigid granules in the form prior to or after placing the mixture in the form. The small pieces are, for example,
It consists of wood chips impregnated with synthetic resin.

[0013]

According to the present invention, when a pavement plate is laid on a roadbed to form a pavement, the large number of small pieces forming part or all of the pavement plate define the pavement surface. . Voids between the small pieces, or moreover, voids between the particles of the second plate-like body allow passage of water such as rainwater, which gives drainage performance to the pavement board. A large number of small pieces that define the voids are flat, and when the pavement board is installed, the large number of small pieces extend in the lateral direction with their front and back surfaces facing up and down, so that the water flowing from the pavement surface into the voids is , Flow laterally over the pieces. At this time, most of the mud, sand, dust and the like contained in the water settles and remains on the small pieces. Therefore, the mud, sand, dust, etc. rarely flow down inside the pavement plate, and therefore, the voids in the pavement plate are blocked by the mud, sand, dust, etc., that is, the pavement plate is not clogged. Is prevented, which maintains the drainage performance of the pavement. Further, the plate-like body formed by partially stacking and adhering a large number of flat small pieces on each other has a large bending strength.

The second plate-like body connected to the first plate-like body functions as a weight for the pavement plate to make it difficult for the pavement plate to move on the roadbed. The flatness of the plate-like body is maintained. Since the second plate-like body is composed of a large number of particles adhered to each other with a gap therebetween, the second plate-like body receives the water flowing down from the first plate-like body and moves inside thereof. Forgive Further, since the mud, sand, dust and the like are deposited on the small pieces of the first plate-shaped body, the voids of the second plate-shaped body will not be clogged.

By arranging a large number of granular materials between the large number of small pieces, the size of the void defined by the small pieces can be adjusted. When the granules are made of elastic granules such as rubber chips, the paving board is provided with good cushioning properties, and when the granules are made of rigid granules such as crushed stone, the rigidity of the paving board is enhanced.

The small pieces made of wood chips give the pavement a proper cushioning property due to the elasticity of the chips.
By covering the wood chips with a synthetic resin, water resistance can be imparted to the wood chips. Water resistance can also be imparted to the wood chip by impregnating a thin layered region from the surface of the wood chip to the inside thereof with a thermosetting resin. Moreover, the wood chips maintain water resistance without impairing their proper elasticity. By imparting water resistance to the wood chips, it is possible to prevent the wood chips themselves from expanding due to water absorption and the occurrence of unevenness of the pavement surface due to the expansion. By strongly bonding the first plate-shaped body and the second plate-shaped body through the cross-linking reaction product, a highly durable pavement board can be obtained.

When the wood chips are impregnated with the thermosetting resin to impart a color to the surface of the pavement board, the case where the colorants are added to the binder that bonds the wood chips to each other In contrast, the color of the surface of the paving board is maintained for a long period of time even if the binder is worn down.

In addition, according to the method of the present invention, by vibrating a mixture of a large number of flat pieces and a binder in an amount sufficient to bond the small pieces to each other, the large number of the small pieces are almost vertically moved on both sides thereof. They can be arranged so as to face each other and partially overlap each other and form a void between them, and a molded product in this state can be obtained after demolding. Prior to or after the mixture is put into the mold, a large number of rigid granules coated with a binder are put into the mold to obtain a pavement plate composed of first and second plate-like bodies. it can.

Further, by vibrating a mixture of a large number of flat small pieces and a binder in an amount sufficient to bond the large number of granular materials to each other, the large numbers of small pieces are made to face each other in a substantially vertical direction, and the small pieces are made to face each other. It is possible to obtain a molded product in this state after demolding by arranging the particles so that they partially overlap with each other and a void is generated between them and the granular material is located between the plurality of small pieces. The first and second plate-like bodies are obtained by adding a large number of rigid particles coated with a binder to the mold frame before or after the large number of small pieces and the large number of particles are placed in the frame. It is possible to obtain a paving board consisting of.

[0020]

1 to 4, four examples of paving boards according to the present invention are respectively designated by reference numerals 10, 12, 1 respectively.
4,16.

The paving board 10 shown in FIG. 1 comprises a plate-like body 22 in which a large number of flat small pieces 18 are partially overlapped with each other and are connected to each other with a gap 20. More specifically, a part of the small piece 18 and a part of the other small piece 18 are overlapped with each other, and a part of these pieces overlap each other.
3 (see FIG. 5). The plate 22 made up of a number of small pieces 18 thus joined together has a high bending strength, so that the paving board 10 has the required mechanical strength.

The pavement plate 10 can be set to have a desired planar shape and a desired thickness dimension. For example, the pavement plate 10 may have a square planar shape with a side of 30 cm and a thickness dimension of about 30 mm. Also, the small piece 18 is
For example, a width dimension of 1-3 cm and a length dimension of 3-5 cm,
It may have a thickness dimension of 0.3 to 0.5 cm.

During paving, a large number of paving boards 10 are
The small pieces 18 are laid on the roadbed (not shown) so that the overlapping directions of the small pieces 18 are vertical and the side surfaces of the small pieces 18 are in contact with each other. Therefore, the pavement surface is composed of a large number of small pieces 18 that extend in the lateral direction with both surfaces facing in the vertical direction.
Stipulated by

According to this pavement plate 10, water such as rainwater and sprinkling water flowing from the pavement surface into the gap 20 of the pavement plate 10 flows on the laterally extending small pieces 18. During this time, most of the mud, sand, dust, etc. contained in the water accumulate on the flat surface of the small piece 18. The water flowing on the small pieces 18 has a weak force of pushing away the mud, sand, dust, etc. remaining on the small pieces 18, and leaves most of the mud, sand, dust, etc., and flows away to the other voids 20. The water then flows over the other small piece 18 below, during which the remaining mud, sand, dust etc. are left behind on the small piece 18.
For this reason, the voids 20 of the pavement plate 10 are not blocked by the mud, sand, dust, etc., and the drainage performance of the pavement is maintained well.

In the illustrated example, a wood chip impregnated with a synthetic resin 25 (see FIG. 5) is used as the flat small piece 18. More specifically, a thermosetting resin such as an unsaturated polyester resin, an acrylic resin, a polyurethane resin, a phenol resin, or an epoxy resin is impregnated in a thin layered region from the surface of the wood chip to the inside thereof. According to the synthetic resin-impregnated wood chips, good water resistance can be imparted to the wood chips without impairing the elasticity of the wood chips that impart cushioning properties to the pavement board 10. Instead of the synthetic resin-impregnated wood chips, wood chips covered with a synthetic resin can be used. Since the wood chips impregnated with the synthetic resin or coated with the synthetic resin have water resistance, the expansion of the wood chips themselves due to water absorption and the accompanying unevenness of the pavement surface do not occur.

The paving board 10 includes a large number of flat pieces 18,
A sufficient amount of the small pieces 18 are adhered to each other, preferably a mixture with the binder 23 in an amount sufficient and sufficient to cover the surface of each small piece 18 is placed in a form (not shown) and the form is vibrated. After that, the mixture can be manufactured by applying hot pressure to the mixture and then demolding.

For example, first, the width dimension (1 to 3c)
m), length (3 to 5 cm) and thickness (0.3 to 0.5)
cm) and a weight ratio of 100 wood chips and a mixture of a weight ratio of 30 unsaturated polyester resin and a curing agent of 0.1 weight ratio of benzoyl peroxide are stirred and mixed, and then the wood chips are mixed. A large number of wood chips 18 impregnated with the thermosetting resin are obtained by heating and solidifying the mixed solution soaked.

Pavement board 1 for defining the paved surface
In order to impart a color to the surface of No. 0, a coloring agent 3.6 (weight) such as red iron oxide is previously added to the mixed liquid (unsaturated polyester resin and its curing agent). This allows the wood chips to be impregnated with the colorant together with the thermosetting resin to color the wood chips. Coloring of the wood chips can also be done by adding the colorant into the binder that covers the wood chips and bonds or bonds the wood chips together. However, as described above, the paving board 1
The loss of color caused by the binder being worn out during the use of 0 can be avoided.

A wood chip 18 impregnated with the thermosetting resin and a binder 23 such as a one-component polyurethane resin.
The mixture of and is placed in a mold and the mold is vibrated laterally. When vibration is applied, both sides of each wood chip 18 face vertically and partially overlap each other.
There is a gap between them.

The weight ratio of the one-component polyurethane resin is 9
-12. This is an amount sufficient to cover the surfaces of the wood chips 18 impregnated with the thermosetting resin and bond them together. Further, in order to prevent the one-component polyurethane resin liquid from dripping from the wood chips 18,
Preferably, a thickener such as silica is added to the one-part polyurethane resin to increase its viscosity. The addition amount of the thickener is, for example, 0.6 by weight.

Next, the mixture in the mold is pressed in the overlapping direction (vertical direction) of the wood chips 18, and
To heat. The pressure, heating temperature, and heating time at this time are, for example, 0.5 to 1.0 Kg / cm ² and 150 ° C., respectively.
And 7 minutes.

Thereafter, the plate-like body 22 is removed by demolding.
The pavement board 10 consisting of is obtained. Since the surface layer of each wood chip is impregnated with the thermosetting resin 25 and the surface thereof is covered with the binder 23, the wood chip has high water resistance.

As another example of the binder 23, an epoxy resin can be used. The compounding weight ratio of the epoxy resin, the thickener, and the colorant at this time can be set to, for example, 7.0 to 8.5: 0.5: 4.0. Further, in this case, the epoxy resin curing agent is added in a weight ratio of 4.5.

Referring to FIG. 2, the pavement plate 12 is a second plate-shaped member obtained by bonding the plate-shaped member 22 shown in FIG. 1 and a large number of granular materials 24 such as crushed stones and beads with a gap therebetween. The body 26 and the body 26 are joined together in layers.

The second plate-shaped member 26 is the pavement plate 12 or the first plate.
Has a function as a weight of the plate-like body 22 and as a reinforcing body for maintaining the flat plate-like body of the first plate-like body 22,
Further, when the pavement plate 12 is spread over the roadbed, the granular material 24 that defines the bottom surface thereof bites into the roadbed, and
Make 2 hard to move.

Since the second plate-like body 26 has a large number of voids, it can receive the water flowing down through the voids 20 of the first plate-like body 22 and guide it to the roadbed. The second plate-shaped body 26 has the same planar shape as the first plate-shaped body 22,
The thickness dimension can be set to 30 mm, for example.

The paving board 12 having the first and second plate-like bodies 22 and 26 may be prepared by placing the mixture of a large number of thermosetting resin-impregnated wood chips 18 and a binder 23 in the mold, or After that, preferably, a large number of particles 24 whose surface is covered with a binder (not shown) made of a thermosetting resin having a property of undergoing a crosslinking reaction with the thermosetting resin are put in the mold, and Similarly to the above, these can be obtained by pressing and heating, and then demolding. The weight ratio of the large number of particles 24 and the binder thereof is, for example, 100: 10. The particle size of the granular material 24 is preferably 3 to 5 mm. By stirring and mixing the particulate matter 24 and the binder thereof, the particulate matter 24 whose surface is covered with the binder can be obtained.

The binder of the second plate 26 can be, for example, an epoxy resin. According to this,
The 1st and 2nd plate-shaped bodies 22 and 26 are firmly joined via the cross-linking reaction product produced in the place where these contact. The binder in the second plate-shaped member 26 may be the same one-component polyurethane resin as in the first plate-shaped member 22 instead of the epoxy resin.

Next, in the pavement board 14 shown in FIG. 3, a large number of wood chips 18 are partially overlapped with each other and the space 2 is formed.
Glued to each other at 0, and a large number of granules 28 are arranged between a large number of wood chips 18 and
The plate-shaped body 30 is connected to

By arranging the granular material 28, the small pieces 1
It is possible to adjust the size of the void 20 between the eight.
The granular material 28 is made of elastic granular material such as rubber chips or rigid granular material such as crushed stone or glass beads.
When the elastic granular material is used, cushioning property can be imparted to the pavement plate 14, and when the rigid granular material is used, the rigidity of the pavement plate 14 can be increased.

To manufacture the paving board 14, for example,
A mixture of a large number of wood chips 18 impregnated with a thermosetting resin, a large number of granules 28, and a binder 23 of these is put in a mold, and the mold is vibrated. As a result, both surfaces of each wood chip 18 are oriented vertically and partially overlap each other, so that a gap is created between the wood chips 18, and one or a plurality of granular materials 28 are provided between the wood chips 18.
Are aligned or aligned such that

The amount of the particulate matter 28 is, for example, 20 by weight.
(When it is made of rubber chips) or 60 (when it is made of crushed stone). Wood chips 18 and wood chips 1
The weight ratio 9 to 12 of the binder 23 for adhering 8 and the granular material 28 is an amount sufficient to cover the surface of the granular material 28 and the surface of the wood chips having a weight ratio of 100 and adhere them to each other. .

After that, similarly, the mixture is subjected to heat and pressure to remove the mold, whereby the pavement plate 14 made of a molded body is obtained.

The pavement board 16 shown in FIG. 4 is obtained by joining the plate-like body 30 shown in FIG. 3 and the plate-like body 24 shown in FIG. 2 in layers.
The particulate matter 28 in the first plate-shaped body 30 has the same function as that described with respect to the pavement board 14 in FIG. 3, and the second plate-shaped body 24 has been described with reference to the pavement board 12 in FIG. Do the same.

The pavement board 16 is basically manufactured in the same manner as the example shown in FIG. That is, before placing a mixture of resin-impregnated wood chips 18 and granules 28 and these binders in a mold, or after that, a large number of granules 24 coated with a synthetic resin are put into the mold. After applying vibration, they are pressurized and heated, and then demolded.

As the flat small piece, for example, a synthetic resin chip can be used instead of the wood chip. The chips made of synthetic resin do not need to be subjected to water-proof treatment or waterproof treatment as in the wood chips. Further, as a binder for the synthetic resin chip,
Both thermosetting resins and thermoplastic resins can be used. Further, the binder in the first plate-shaped bodies 22 and 30 and the binder in the second plate-shaped body 24 can be of the same type. The wood chips can be obtained by crushing waste materials of buildings, thinning materials, etc., and the synthetic resin chips can be obtained by using plastic waste materials.

[Brief description of drawings]

FIG. 1 is a partial vertical sectional view of a paving board according to the present invention.

FIG. 2 is a partial vertical sectional view of another paving board according to the present invention.

FIG. 3 is a partial vertical sectional view of another paving board according to the present invention.

FIG. 4 is a partial vertical sectional view of another paving board according to the present invention.

5 is a partially enlarged cross-sectional view of the pavement plate shown in FIG.

[Explanation of symbols]

 10, 12, 14, 16 Pavement board 18 Small piece 20 Void 22, 26 Plate-like body 23 Binder 24 Granular material 25 Impregnated synthetic resin 28 Granular material

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[Procedure amendment]

[Submission date] June 20, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Patent application title: Pavement board and manufacturing method thereof

[Claims]

Detailed Description of the Invention

[0001]

The present invention relates to a sidewalk, a park, a promenade,
The present invention relates to a plate-shaped or block-shaped paving plate used for paving a cycling road, a jogging road, etc. and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as a pavement plate, a first plate-like body in which a large number of elastic particles such as rubber chips are bonded to each other with a gap, and a large number of rigid particles such as crushed stone have a gap. It has been proposed to join the second plate-shaped bodies, which are joined together, to each other.

[0003]

In the conventional paving with a pavement plate, a large number of pavement plates are respectively provided with a first plate-like body made of elastic granules and a second plate-like body made of rigid granules vertically. It is formed by laying it so that its sides are in contact with each other. The second plate-like body made of the rigid granules acts as a weight of the pavement plate, and the first plate-like body made of the elastic granules defines a paving surface having a cushioning property.

In the conventional paving board, water such as rainwater passes through the voids between the elastic particles of the first plate and the rigid particles of the second plate. Allow the passage of. Due to this water permeability or drainage property of the pavement plate, generation of water pools on the pavement surface that hinders walking, running, etc. or causes overturning, etc. is prevented.

By the way, the water flowing into the voids of the first plate-like body contains mud, sand, dust and the like on the pavement surface. Water containing mud, sand, dust, and the like sequentially flows downward through a large number of voids in the pavement plate, and during this time, the mud, sand, dust, and the like adhere to the individual elastic particles. Therefore, with the passage of time, the mud,
There has been a problem that individual voids are blocked by sand, dust, etc., causing clogging of the pavement board and reducing the drainage performance of the pavement.

An object of the present invention is to provide a paving board which does not cause clogging. Another object of the present invention is to solve the problem in paving with the conventional paving plate.

[0007]

The paving board according to the present invention comprises:
The plate includes a plurality of flat pieces partially overlapped with each other and connected to each other with a gap. Also,
Another paving board of the present invention is the plate-shaped body (first plate-shaped body).
Are laminated and bonded to a second plate-shaped body in which a large number of particles are bonded to each other with a gap.
Furthermore, in another paving board of the present invention, a large number of flat pieces are partially overlapped with each other and are joined to each other with a gap, and a plurality of rigid granules such as crushed stones are arranged between the pieces, and It consists of a plate-like body that is joined to a small piece.
Further, another paving board of the present invention is formed by joining the plate-shaped body (first plate-shaped body) and the second plate-shaped body in two layers.

As the flat small piece, a wood chip covered with a synthetic resin, a wood chip impregnated with a synthetic resin, or a chip made of a synthetic resin can be used. The width, length and thickness of the flat piece are preferably 1 to 3 cm, 3 to 5 cm and 0.3 to, respectively.
It is 0.5 cm.

A large number of small pieces of the first plate-like body and a large number of particles of the second plate-like body are bonded by a binder containing a thermosetting resin having a property of undergoing a crosslinking reaction with each other. Can be done. According to this, the said 1st plate-shaped body and the said 2nd plate-shaped body are firmly joined to each other via the substance produced by the crosslinking reaction of both thermosetting resins.

Preferably, the granular material of the second plate is made of rigid granular material such as crushed stone. Further, preferably, the wood chips are impregnated with a coloring agent.

In the method for manufacturing a pavement board of the present invention, a mixture of a large number of flat small pieces and a binder in an amount sufficient to bond the small pieces to each other is placed in a mold, and after vibrating the mold,
Applying hot pressure to the mixture, followed by demolding. Further, the method includes placing a number of binder coated rigid granules in the form prior to or after placing the mixture in the form.

[0012] In another manufacturing method, a large number of flat pieces, a large number of rigid granules, and a sufficient amount of binder for adhering the small pieces to each other and for adhering the small pieces and the rigid granules to each other are used. The method includes placing the mixture in a mold, vibrating the mold, applying hot pressure to the mixture, and then demolding. Further, the method includes placing a number of binder coated rigid granules in the form prior to or after placing the mixture in the form. The small pieces are
For example, it is made of wood chips impregnated with synthetic resin.

[0013]

According to the present invention, when a pavement plate is laid on a roadbed to form a pavement, the large number of small pieces forming all or a part of the pavement plate define a pavement surface. . Voids between the small pieces, or moreover, voids between the particles of the second plate-like body allow passage of water such as rainwater, which gives drainage performance to the pavement board. A large number of small pieces that define the voids are flat, and when the pavement board is installed, the large number of small pieces extend in the lateral direction with their front and back surfaces facing up and down, so that the water flowing from the pavement surface into the voids is , Flow laterally over the pieces. At this time, most of the mud, sand, dust and the like contained in the water settles and remains on the small pieces. Therefore, the mud, sand, dust, etc. rarely flow down inside the pavement plate, and therefore, the voids in the pavement plate are blocked by the mud, sand, dust, etc., that is, the pavement plate is not clogged. Is prevented, which maintains the drainage performance of the pavement. Further, the plate-like body formed by partially stacking and adhering a large number of flat small pieces on each other has a large bending strength.

The second plate-like body connected to the first plate-like body functions as a weight for the pavement plate to make it difficult for the pavement plate to move on the roadbed. The flatness of the plate-like body is maintained. Since the second plate-like body is composed of a large number of particles adhered to each other with a gap therebetween, the second plate-like body receives the water flowing down from the first plate-like body and moves inside thereof. Forgive Further, since the mud, sand, dust and the like are deposited on the small pieces of the first plate-shaped body, the voids of the second plate-shaped body will not be clogged.

By arranging a number of rigid granules such as crushed stones between the plurality of small pieces, the size of the void defined by the small pieces can be adjusted. Also, the rigid granules increase the rigidity of the pavement board.

The small pieces made of wood chips give the pavement a proper cushioning property due to the elasticity of the chips.
By covering the wood chips with a synthetic resin, water resistance can be imparted to the wood chips. Water resistance can also be imparted to the wood chip by impregnating a thin layered region from the surface of the wood chip to the inside thereof with a thermosetting resin. Moreover, the wood chips maintain water resistance without impairing their proper elasticity. By imparting water resistance to the wood chips, it is possible to prevent the wood chips themselves from expanding due to water absorption and the occurrence of unevenness of the pavement surface due to the expansion. By strongly bonding the first plate-shaped body and the second plate-shaped body through the cross-linking reaction product, a highly durable pavement board can be obtained.

When the wood chips are impregnated with the thermosetting resin to impart a color to the surface of the pavement board, the case where the colorants are added to the binder that bonds the wood chips to each other In contrast, the color of the surface of the paving board is maintained for a long period of time even if the binder is worn down.

In addition, according to the method of the present invention, by vibrating a mixture of a large number of flat pieces and a binder in an amount sufficient to bond the small pieces to each other, the large number of the small pieces are almost vertically moved on both sides thereof. They can be arranged so as to face each other and partially overlap each other and form a void between them, and a molded product in this state can be obtained after demolding. Prior to or after the mixture is put into the mold, a large number of rigid granules coated with a binder are put into the mold to obtain a pavement plate composed of first and second plate-like bodies. it can.

Further, by vibrating a mixture of a number of flat particles, a number of rigid granules, and a binder in an amount sufficient to bond the particles together and to bond the particles and the rigid particles together. , The plurality of small pieces are arranged so that both surfaces thereof face substantially vertically and partially overlap each other, a gap is formed between them, and the rigid granules are located between the plurality of small pieces, and After molding, a molded product in this state can be obtained. First and second plates by placing a number of binder coated rigid granules in the form prior to or after placing the plurality of small pieces and the plurality of rigid granules in the formwork. It is possible to obtain a pavement board made of a sheet.

[0020]

1 to 4, four examples of paving boards according to the present invention are respectively designated by reference numerals 10, 12, 1 respectively.
4,16.

The paving board 10 shown in FIG. 1 comprises a plate-like body 22 in which a large number of flat small pieces 18 are partially overlapped with each other and are connected to each other with a gap 20. More specifically, a part of the small piece 18 and a part of the other small piece 18 are overlapped with each other, and a part of these pieces overlap each other.
3 (see FIG. 5). The plate-like body 22 composed of a large number of the small pieces 18 connected in this way has a high bending strength, and thus the paving board 10 has the required mechanical strength.

The pavement plate 10 can be set to have a desired planar shape and a desired thickness dimension. For example, the pavement plate 10 may have a square planar shape with a side of 30 cm and a thickness dimension of about 30 mm. Also, the small piece 18 is
For example, it may have a width dimension of 1 to 3 cm, a length dimension of 3 to 5 cm, and a thickness dimension of 0.3 to 0.5 cm.

During paving, a large number of paving boards 10 are
The small pieces 18 are laid on the roadbed (not shown) so that the overlapping directions of the small pieces 18 are vertical and the side surfaces of the small pieces 18 are in contact with each other. Therefore, the pavement surface is composed of a large number of small pieces 18 that extend in the lateral direction with both surfaces facing in the vertical direction.
Stipulated by

According to this pavement plate 10, water such as rainwater and sprinkling water flowing from the pavement surface into the gap 20 of the pavement plate 10 flows on the laterally extending small pieces 18. During this time, most of the mud, sand, dust, etc. contained in the water accumulate on the flat surface of the small piece 18. The water flowing on the small pieces 18 has a weak force of pushing away the mud, sand, dust, etc. remaining on the small pieces 18, and leaves most of the mud, sand, dust, etc., and flows away to the other voids 20. The water then flows over the other small piece 18 below, during which the remaining mud, sand, dust etc. are left behind on the small piece 18.
For this reason, the voids 20 of the pavement plate 10 are not blocked by the mud, sand, dust, etc., and the drainage performance of the pavement is maintained well.

In the illustrated example, a wood chip impregnated with a synthetic resin 25 (see FIG. 5) is used as the flat small piece 18. More specifically, a thermosetting resin such as an unsaturated polyester resin, an acrylic resin, a polyurethane resin, a phenol resin, or an epoxy resin is impregnated in a thin layered region from the surface of the wood chip to the inside thereof. According to the synthetic resin-impregnated wood chips, good water resistance can be imparted to the wood chips without impairing the elasticity of the wood chips that impart cushioning properties to the pavement board 10. Instead of the synthetic resin-impregnated wood chips, wood chips covered with a synthetic resin can be used. Since the wood chips impregnated with the synthetic resin or coated with the synthetic resin have water resistance, the expansion of the wood chips themselves due to water absorption and the accompanying unevenness of the pavement surface do not occur.

The paving board 10 includes a large number of flat pieces 18,
A sufficient amount of the small pieces 18 are adhered to each other, preferably a mixture with the binder 23 in an amount sufficient and sufficient to cover the surface of each small piece 18 is placed in a form (not shown) and the form is vibrated. After that, the mixture can be manufactured by applying hot pressure to the mixture and then demolding.

For example, first, the width dimension (1 to 3c)
m), length dimension (3-5 cm) and thickness dimension (0.3
A weight ratio of 100 wood chips and a mixture of unsaturated polyester resin with a weight ratio of 30 and benzoyl peroxide with a weight ratio of 0.1 as a curing agent are mixed by stirring, A large number of wood chips 18 impregnated with a thermosetting resin are obtained by heating and solidifying the mixed solution that has permeated the wood chips.

Pavement board 1 for defining the paved surface
In order to impart a color to the surface of No. 0, a coloring agent 3.6 (weight) such as red iron oxide is previously added to the mixed liquid (unsaturated polyester resin and its curing agent). This allows the wood chips to be impregnated with the colorant together with the thermosetting resin to color the wood chips. Coloring of the wood chips can also be done by adding the colorant into the binder that covers the wood chips and bonds or bonds the wood chips together. However, as described above, the paving board 1
The loss of color caused by the binder being worn out during the use of 0 can be avoided.

A wood chip 18 impregnated with the thermosetting resin and a binder 23 such as a one-component polyurethane resin.
The mixture of and is placed in a mold and the mold is vibrated laterally. When vibration is applied, both sides of each wood chip 18 face vertically and partially overlap each other.
There is a gap between them.

The weight ratio of the one-component polyurethane resin is 9
-12. This is an amount sufficient to cover the surfaces of the wood chips 18 impregnated with the thermosetting resin and bond them together. Further, in order to prevent the one-component polyurethane resin liquid from dripping from the wood chips 18,
Preferably, a thickener such as silica is added to the one-part polyurethane resin to increase its viscosity. The addition amount of the thickener is, for example, 0.6 by weight.

Next, the mixture in the mold is pressed in the overlapping direction (vertical direction) of the wood chips 18, and
To heat. The pressure, heating temperature, and heating time at this time are, for example, 0.5 to 1.0 Kg / cm ² , respectively.
150 degreeC and 7 minutes.

Thereafter, the plate-like body 22 is removed by demolding.
The pavement board 10 consisting of is obtained. Since the surface layer of each wood chip is impregnated with the thermosetting resin 25 and the surface thereof is covered with the binder 23, the wood chip has high water resistance.

As another example of the binder 23, an epoxy resin can be used. The blending weight ratio of the epoxy resin, the thickener, and the colorant at this time can be set to, for example, 7.0 to 8.5: 0.5: 4.0. Further, in this case, the epoxy resin curing agent is added in a weight ratio of 4.5.

Referring to FIG. 2, the pavement plate 12 is a second plate-shaped member obtained by bonding the plate-shaped member 22 shown in FIG. 1 and a large number of granular materials 24 such as crushed stones and beads with a gap therebetween. The body 26 and the body 26 are joined together in layers.

The second plate-shaped member 26 is the pavement plate 12 or the first plate.
Has a function as a weight of the plate-like body 22 and as a reinforcing body for maintaining the flat plate-like body of the first plate-like body 22,
Further, when the pavement plate 12 is spread over the roadbed, the granular material 24 that defines the bottom surface thereof bites into the roadbed, and
Make 2 hard to move.

Since the second plate-like body 26 has a large number of voids, it can receive the water flowing down through the voids 20 of the first plate-like body 22 and guide it to the roadbed. The second plate-shaped body 26 has the same planar shape as the first plate-shaped body 22,
The thickness dimension can be set to 30 mm, for example.

The paving board 12 having the first and second plate-like bodies 22 and 26 may be prepared by placing the mixture of a large number of thermosetting resin-impregnated wood chips 18 and a binder 23 in the mold, or After that, preferably, a large number of particles 24 whose surface is covered with a binder (not shown) made of a thermosetting resin having a property of undergoing a crosslinking reaction with the thermosetting resin are put in the mold, and Similarly to the above, these can be obtained by pressing and heating, and then demolding. The weight ratio of the large number of particles 24 and the binder thereof is, for example, 100: 10. The particle size of the granular material 24 is preferably 3 to 5 mm. By stirring and mixing the particulate matter 24 and the binder thereof, the particulate matter 24 whose surface is covered with the binder can be obtained.

The binder of the second plate 26 can be, for example, an epoxy resin. According to this,
The 1st and 2nd plate-shaped bodies 22 and 26 are firmly joined via the cross-linking reaction product produced in the place where these contact. The binder in the second plate-shaped member 26 may be the same one-component polyurethane resin as in the first plate-shaped member 22 instead of the epoxy resin.

Next, in the pavement board 14 shown in FIG. 3, a large number of wood chips 18 are partially overlapped with each other and the space 2 is formed.
A number of rigid granules 2 which are glued together at 0
8 is arranged between a large number of wood chips 18 and is composed of a plate-like body 30 connected to the wood chips 18.

By arranging the rigid granular material 28, the size of the void 20 between the small pieces 18 can be adjusted. The rigid granular material 28 is made of crushed stone or glass beads. The rigid particles increase the rigidity of the pavement board 14.

To manufacture the paving board 14, for example,
A mixture of a large number of wood chips 18 impregnated with a thermosetting resin, a large number of rigid granules 28, and a binder 23 thereof is placed in a mold and the mold is vibrated. As a result, each of the wood chips 18 faces in the vertical direction and partially overlaps with each other so that a gap is formed between the wood chips 18.
In addition, one or a plurality of rigid granules 28 are arranged or aligned so as to be located between the wood chips 18.

The amount of the rigid granular material 28 is, for example, 60 (in the case of crushed stone) in weight ratio. The weight ratio 9 to 12 of the binder 23 for adhering the wood chips 18 to each other and the wood chips 18 and the rigid granules 28 is the same as the rigid granules 28.
Of the wood chips 18 and the surface of the wood chips 18 having a weight ratio of 100, and are adhered to each other.

After that, similarly, the mixture is subjected to heat and pressure to remove the mold, whereby the pavement plate 14 made of a molded body is obtained.

The paving board 16 shown in FIG. 4 is obtained by joining the plate-like body 30 shown in FIG. 3 and the plate-like body 26 shown in FIG. 2 in layers.
The rigid granular material 28 in the first plate-shaped body 30 is the paving board 1 of FIG.
4, the second plate-shaped body 26 has the same function as that described with respect to the pavement plate 12 of FIG.

The pavement board 16 is basically manufactured in the same manner as the example shown in FIG. That is, before or after the mixture of the resin-impregnated wood chips 18 and the rigid granules 28 and these binders is placed in the mold, a large number of granules 24 overlaid with synthetic resin are added to the mold. It is obtained by depressurizing, after applying a vibration, applying pressure and heating to these.

As the flat small piece, for example, a synthetic resin chip can be used instead of the wood chip. The chips made of synthetic resin do not need to be subjected to water-proof treatment or waterproof treatment as in the wood chips. Further, as a binder for the synthetic resin chip,
Both thermosetting resins and thermoplastic resins can be used. Further, the binder in the first plate-shaped bodies 22 and 30 and the binder in the second plate-shaped body 24 can be of the same type. The wood chips can be obtained by crushing waste materials of buildings, thinning materials, etc., and the synthetic resin chips can be obtained by using plastic waste materials.

[Brief description of drawings]

FIG. 1 is a partial vertical sectional view of a paving board according to the present invention.

FIG. 2 is a partial vertical sectional view of another paving board according to the present invention.

FIG. 3 is a partial vertical sectional view of another paving board according to the present invention.

FIG. 4 is a partial vertical sectional view of another paving board according to the present invention.

5 is a partially enlarged cross-sectional view of the pavement plate shown in FIG.

[Explanation of reference numerals] 10, 12, 14, 16 Pavement plate 18 Small piece 20 Void 22, 30 (First) plate-like body 26 (Second) plate-like body 23 Binder 24 Granules 25 Impregnated synthetic resin 28 Rigid granules Stuff

Claims (18)

[Claims] 1. A paving board comprising a plate-shaped body in which a large number of flat pieces are partially overlapped with each other and are joined to each other with a gap therebetween. 2. A first plate-shaped body comprising a plurality of flat small pieces partially overlapped with each other and bonded to each other with a gap, and a large number of granular particles joined to the first plate-shaped body. A pavement board, comprising: a second plate-shaped body in which objects are bonded to each other with a gap. 3. A plurality of flat pieces are partially overlapped with each other and are joined to each other with a gap, and a plurality of particles are arranged between the plurality of flat pieces and are joined to the pieces. A pavement board containing a plate-shaped body. 4. A plurality of flat pieces are partially overlapped with each other and are joined to each other with a gap, and a plurality of particles are arranged between the plurality of flat pieces and are joined to the pieces. A pavement board comprising: a first plate-shaped body, and a second plate-shaped body, which is joined to the first plate-shaped body and in which a large number of particles are bonded to each other with gaps. 5. The pavement board according to claim 1, wherein the flat small pieces are made of wood chips covered with a synthetic resin. 6. The thin flat piece is a wood chip, and a thermosetting resin is impregnated in a thin layered region extending from the surface of the wood chip to the inside thereof. Pavement board described. 7. A binder containing a thermosetting resin having a property of causing a large number of small pieces of the first plate-like body and a large number of particles of the second plate-like body to cross-link with each other. The first plate-shaped body and the second plate-shaped body that are bonded to each other are bonded to each other via a substance generated by a cross-linking reaction of both thermosetting resins. Paving board described in. 8. The paving board according to claim 1, wherein the flat small piece is made of a synthetic resin chip. 9. The pavement board according to claim 3, wherein the granules arranged between the plurality of flat small pieces are elastic granules. 10. The paving board according to claim 3, wherein the granular material arranged between the plurality of flat small pieces is made of rigid granular material. 11. The pavement board according to claim 2, wherein the granular material of the second plate-shaped body is a rigid granular material. 12. The flat piece according to claim 1, wherein the flat piece has a width dimension of 1 to 3 cm, a length dimension of 3 to 5 cm, and a thickness dimension of 0.3 to 0.5 cm. Pavement board. 13. The pavement board according to claim 6, wherein the wood chips are further impregnated with a coloring agent. 14. A mixture of a large number of flat pieces and a binder in an amount sufficient to bond the pieces to each other is placed in a mold, the mold is vibrated, and then hot pressure is applied to the mixture. And a method for manufacturing a pavement board, including demolding. 15. The method of claim 14 including adding a number of rigid binder-coated granules to the form prior to or after introducing the mixture into the form. 16. A mold containing a mixture of a large number of flat pieces, a large number of granules, and a binder in an amount sufficient to bond the small pieces and the granules to each other and vibrating the mold. Then, a method for producing a pavement board, which comprises applying hot pressure to the mixture and then removing from the mold. 17. The method of claim 16 including introducing a plurality of binder-coated rigid granules into the mold prior to or after introducing the mixture into the mold. 18. The manufacturing method according to claim 14, wherein the small pieces are made of wood chips impregnated with a synthetic resin.