JP2001214406A - Weed preventive sheet for road surface and having the concrete secondary products sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weed preventive sheet for road surface, which securely prevent weeds growing on the road surface, and concrete secondary products equipped with the sheet. SOLUTION: The sheet is placed at a border part of a material for road surface for covering the top face of foundation material of the roads such as roadway and footpath. The sheet prevents seeds from growing out of the border between. The neighboring surface materials on the road. The weed preventive sheet comprises a sheet and a long sheet holding member the sheet consists of a flexible sheet body and a protecting cover sheet. The long sheet holding member is fixed on one end in the longitudinal direction of the sheet, being inserted in a groove, which is made on the border face of the surface material of the road. The sheet holding member comprises, for example, a fixing part to be fixed to the groove made on the border face of the road surface material, rib part which enhences strength of the sheet holding member and can abut againt the boader face of the surface material from outside, and a plane part which is formed between the rib part and the fixing part. The plane part is fixed on the sheet body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boundary between concrete secondary products such as a curb and a U-shaped groove used for a roadway and a sidewalk, or a sidewalk in contact with these concrete secondary products. Control sheet for preventing the growth of weeds at the boundary with roads and roads, and a secondary concrete product having the same.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 11, a road and a sidewalk which form a road are provided between a road 101 and a sidewalk 102 adjacent thereto, such as a curb 103 or a U-shaped groove 104. The next product is placed on the road 101 and sidewalk 1
02. The roadway 101 is formed by laying a base material 105 made of crushed stone or sand on the upper surface of the soil and paving asphalt 106 on the surface of the base material 105. The sidewalk 102 is formed on the surface of the base material 105, for example. It is formed by laying (paving) a large number of interlocking blocks 107.

[0003]

However, in such a roadway 101 and a sidewalk 102 of the road, an interlocking block 107, a curb 103, a U-shaped groove 104 and the like of the sidewalk 102 forming a road surface material of the road are provided. Since it is a structure that is formed separately and is used by being integrally joined at the site, there is a predetermined gap between these road surface materials from the beginning of construction, such as an interlocking block 107, or a curbstone. 103 and U-shaped groove 104 or U-shaped groove 10
Although there is no gap at first, such as between the asphalt 4 and the asphalt 106, a gap may be formed due to a temporal change such as vibration of the vehicle or land subsidence.

[0004] As a result, the seeds of the weeds flying from the gaps infiltrate into the base material 105, or the seeds of the weeds previously mixed in the base material 105 grow by absorbing moisture such as rain. Weeds 108 extend on the surface of the road and become sidewalks 10
Weeds 108 that have spoiled the appearance of the second class and have grown greatly
As a result, it is easy to hinder the passage of bicycles and vehicles, and it is difficult to completely remove the weeds 108 from the roots during the removal work. There was such a problem.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a weed prevention sheet for a road surface capable of reliably preventing the growth of weeds on the road surface. It is in. Further, the object of the invention according to claim 2 is, in addition to the object of the invention according to claim 1, in addition to the object of the invention according to claim 1, a weed prevention sheet for road surface capable of stabilizing the shape of the weed prevention sheet and easily fixing to the secondary concrete product. The object of the invention described in claim 3 is, in addition to the object of the invention described in claim 1 or 2, to provide a road surface weed prevention sheet that can be easily manufactured and can be formed at low cost. Is to do.

Another object of the present invention is to provide a concrete secondary product provided with a road surface weed prevention sheet capable of reliably preventing the growth of weeds on the road surface.
The object of the invention described in claim 5 is, in addition to the object of the invention described in claim 4, a concrete secondary product provided with a road surface weed prevention sheet capable of stably maintaining the performance of the weed prevention sheet itself. The object of the invention according to claim 6 is, in addition to the object of the invention according to claim 4 or 5, a grass sheet for road surface which can be easily integrated with a secondary concrete product and formed at low cost. To provide secondary concrete products.

[0007]

In order to achieve the above object, the invention according to claim 1 of the present invention is provided at a boundary portion of a road surface material covering an upper surface of a base material of a road such as a road or a sidewalk. A road surface weed prevention sheet for preventing the growth of weeds from a boundary gap between adjacent road surface materials, wherein the weed prevention sheet is fixed to a flexible sheet and one end in the longitudinal direction of the sheet. And a long sheet holding member that can be fitted into a groove provided on the boundary surface of the road surface material.

[0008] With this configuration, it is possible to fit the long sheet holding member fixed to one end of the sheet in the longitudinal direction into the groove formed on the boundary surface of the road surface material. The other end of the flexible sheet protrudes outside a boundary surface of the road surface material by a predetermined dimension. Then, by placing another road surface material on the protruding upper surface of this sheet, the sheet will be laid below the boundary portion of the adjacent road surface material,
This sheet closes the gap at the boundary between the outer peripheral portions of the road surface material and prevents the growth of weeds.

According to a second aspect of the present invention, the sheet holding member is fixed to a groove provided at a boundary surface of the road surface material, the rigidity of the sheet holding member is increased, and the side surface of the concrete secondary product is improved. A rib portion that can be in contact with a flat portion formed between the rib portion and the fixing portion and to which the sheet is fixed;
It is characterized by having. With this configuration, the rigidity of the sheet holding member is ensured by the rib portion formed at the end of the flat portion, and a stable shape is obtained in the weed prevention sheet itself, and the fixing portion corresponds to, for example, the groove. The ribs can be fixed to the road surface material by driving the ribs, and the grass sheet can be easily fixed to the road surface material.

The invention according to claim 3 is characterized in that the sheet holding member is formed of a resin material, and the end portion of the sheet is fixed to a plane portion thereof with a plurality of metal needles. With this configuration, since the sheet is fixed to the flat portion of the sheet holding member by the metal needle, the fixing of the sheet and the sheet holding member is simplified, and the production of the grass-proof sheet itself can be facilitated. .

According to a fourth aspect of the present invention, there is provided a concrete secondary product which is disposed on a base material such as a roadway or a sidewalk and can form a part of a road, wherein the concrete secondary product has an interface with a boundary surface of the concrete secondary product. A groove is provided on the side surface of the sheet, and a sheet holding member of a grass sheet having a flexible sheet and an elongated sheet holding member fixed to a longitudinal end of the sheet is provided in the groove. It is characterized by being fitted.

[0012] With this configuration, in the concrete secondary product in which the elongated sheet holding member is fitted into the groove of the boundary surface, the flexible sheet of the grass-proof sheet is provided outside the boundary surface. It is installed on the base material in a state of protruding dimensions.
Then, another concrete secondary product or the like is placed on the projecting sheet of the concrete secondary product in a state where it is placed, whereby the gap formed at the boundary portion of the outer peripheral portion of the concrete secondary product is closed by the sheet. And the growth of weeds is reliably prevented.

According to a fifth aspect of the present invention, the weed prevention sheet is formed of a sheet body having a weed prevention performance, and a non-water-permeable protective sheet covering the outer peripheral surface of the sheet body. And With this configuration, for example, even when storing a secondary concrete product outdoors, it is possible to protect the sheet body with a protective sheet and insert-mold a grass-proof sheet into the secondary concrete product. In addition, the protective sheet can prevent the permeation of concrete into the sheet body and prevent the sheet body from lowering in flexibility, thereby stably maintaining the performance of the weed prevention sheet.

The invention according to claim 6 is characterized in that the sheet holding portion of the weed prevention sheet is integrally fixed to the concrete secondary product by insert molding. With this configuration, the grass-proof sheet is integrally fixed to the concrete secondary product by insert molding of the sheet holding member, so that the concrete secondary product with the grass-proof sheet can be easily manufactured, and the cost can be reduced. Secondary products are obtained.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 7 show an embodiment of the present invention. FIG. 1 is a perspective view showing a partial cross section of a road structure at the time of construction, FIG. 2 is a perspective view of a U-shaped groove, and FIG. 4 is a partially cutaway perspective view of the grass sheet, FIG. 5 is a plan view thereof, FIG. 6 is a front view thereof, and FIG. 7 is a sectional view taken along line AA of FIG.

In FIG. 1, a road 1 has an asphalt 4
And a sidewalk 3 paved by laying a large number of interlocking blocks 7 in contact with the road 2 via a U-shaped groove 5 and a curb 6 as a secondary concrete product. Have. Roadway 2
Is formed by paving asphalt 4 with a predetermined thickness on the upper surface of a base material 8 made of soil, crushed stone, crushed stone, sand, and the like. 6 are installed.

The U-shaped groove 5 has a grating 11 removably disposed in an upper surface opening thereof and, as shown in FIG. 2, a longitudinal surface formed on a side surface 5a forming a boundary surface with the asphalt 4 of the roadway 2. A linear groove 9 is provided by an appropriate method over the entire area in the direction, and a grass sheet 10 is fixed to the groove 9 so as to protrude outward by a predetermined dimension. In addition, curb 6
As shown in FIG. 3, a linear groove 9 is provided on the side surface 6a of the sidewalk 3 which forms a boundary surface with the interlocking block 7 over the entire area in the longitudinal direction. It is fixed so as to protrude outward by a predetermined dimension. The construction of the road 1 is performed by a construction method substantially similar to the conventional construction.

The grass sheet 10 fixed to the U-shaped groove 5 and the curb 6 has a sheet 13 and a sheet holding member 14, as shown in FIGS. The sheet 13 is made of, for example, a flexible sheet body 13a made of synthetic resin such as leather or rubber, woven fabric, oil paper or other paper, or metal such as aluminum foil.
And a protective sheet 13b made of, for example, a transparent plastic bag or the like that covers the front and back surfaces and the front end of the sheet body 13a and has excellent weather resistance. The width W of the sheet 13 is set to, for example, about 100 mm.

The sheet holding member 14 is formed in a long shape, and the sheet portion 13 is fixed to the flat portion 1 to which the metal needle 16 is fixed.
4a and one end of the flat portion 14a are integrally formed to increase the rigidity of the sheet holding member 14 and to form the U-shaped groove 5 and the curb 6
Rib portion 14b abutting on side surfaces 5a and 6a of
4a, and has a fixing portion 14c integrally formed on the other end side of the sheet 4a and serving also for positioning the sheet 13. In addition, the rib portion 14b
Is inclined at a predetermined angle α rearward with respect to the flat portion 14a as shown in FIG. 7, but the inclination angle α is not always necessary, and it is of course possible to set α to approximately 90 degrees. is there. The width W1 of the sheet holding member is 10 to 3
It is set to about 0 mm, and the material of the sheet holding member 14 is
For example, a synthetic resin material such as a stapler or the like having a hardness that can penetrate the metal needle 16 is used.

The grass sheet 10 is manufactured as follows. That is, the base material of the long sheet holding member 14 is formed, and a predetermined length (for example, L = 600 m) is adjusted to the length of the U-shaped groove 5 or the curb 6 to which the base material is to be fixed.
m, 900 mm, 1200 mm, 1500 mm, 180
0 mm, 2000 mm, etc.) and the sheet holding member 1
4 is produced. Further, a sheet body 13a cut from the raw sheet of the sheet 13 into a predetermined width (for example, W = 100 mm) and a length corresponding to the length L of the cut sheet holding member 14 is manufactured.

Then, the front and back surfaces and the front end (or the longitudinal end or the like) of the sheet body 13a are connected to the protective sheet 13a.
b, one end of each of them in the longitudinal direction is brought into contact with the back surface of the flat portion 14a of the sheet holding member 14, and a plurality of portions of the ends are fixed to the flat portion 14a with a stapler metal needle 16. . Thus, the grass-proof sheet 10 in which the sheet 13 is integrated with the sheet 13 reinforced by the sheet holding member 14 is manufactured.

Next, an example of a method of fixing the thus-prepared weed-proof sheet 10 to a secondary concrete product such as the U-shaped groove 5 or the curb 6 will be described by taking an example of insert molding.
First, as shown in FIGS. 8 and 9, for example, the sheet holding member 14 of the grass-proof sheet 10 is placed in one of the upper and lower mold forms 17 a from which a plurality of curbs 6 are taken, which is located below. A guide bar 18 made of a metal rod or the like for supporting the sheet 13 at a predetermined position, and the sheet 13 on the other mold 17b.
Is provided with a slit 19 penetrating therethrough. Also, an overflow hole 22 is provided in the mold 17a, and an inlet 20 for ready-mixed concrete is provided in the mold 17b, and a pipe 21 is integrated with the inlet 20 by screwing, for example.

Each sheet 13 of the grass sheet 10 is passed through, for example, six slits 19 of the mold 17b so as to project a predetermined length on the upper surface of the mold 17b. The frame 17b is set, and ready-mixed concrete is poured into the mold 17a from the inlet 20 (pipe 21). In addition, for example, the slit 19 of the mold 17b
By providing an appropriate backflow preventing mechanism to the portion, when the ready-mixed concrete is poured and formed, the nodules and the like of the ready-mixed concrete rise up the slits 19 of the formwork 17b located above, and the non-water-permeable protective sheet 13b Is prevented from penetrating into the sheet body 13a covered with
A decrease in flexibility of 3a is prevented.

When the concrete in the formwork 17 has solidified,
By removing the mold 17b from the mold 17a, the curb 6 in which the grass sheet 10 is integrally fixed to the side surface 6a is manufactured. At the time of removing the mold, since the sheet 13 of the weed prevention sheet 10 has sufficient flexibility, the sheet 13 is well extracted from the slit 19 of the formwork 19b.
Although the guide bar 8 is buried in the solidified concrete, the guide bar 18 also functions as a reinforcing bar for the curb 6 itself. When a reinforcing bar is used for the secondary concrete product, the reinforcing bar can be used as the guide bar 18. The above insert molding method is an example of a basic method. For example, an appropriate mold and an appropriate molding method can be adopted according to the shape of a concrete secondary product. The number of pieces to be simultaneously molded is not limited to six, but may be two or four in which the shape of the mold 17 is simplified.

Then, similarly to the curb 6, the U-shaped groove 5 is integrally formed with the grass sheet 10 by insert molding. The curb 6 and the U-shaped groove 5 with the grass sheet 10 manufactured in this manner are: They are often stored outdoors by secondary concrete product manufacturers or exposed to rain at construction sites.
However, even in such a state, the protection sheet 13b
Since it is possible to prevent rainwater or the like from penetrating into the sheet main body 13a, it is possible to reliably prevent deterioration of the herbicidal sheet 10 itself such as flexibility and herbicidal performance over time.
It is also possible to prevent rain from adsorbing to the sheet body 13a and making the work difficult.

In the above example, the case where the grass sheet 10 is integrally fixed to the U-shaped groove 5 and the curb 6 by insert molding has been described. However, the present invention is not limited to this. For example, as shown in FIG. 10, a groove 9 having a predetermined shape is provided on a predetermined side surface 5 a of a concrete secondary product such as a U-shaped groove 5 at the same time as or after molding, and the grass sheet 10 is provided in the groove 9. Can be integrated by driving and fitting as shown by the arrow A. in this case,
Since the sheet holding member 14 of the weed prevention sheet 10 is provided with a rib portion 14b which comes into contact with the side surface 5a of the U-shaped groove 5, the rib portion 14b is fixed by hitting the rib portion 14b with a hammer as shown by arrow B in the figure. The ends of the portion 14c and the flat portion 14a are
It can be easily fitted and fixed in the groove 9 of the character groove 5.

In this embodiment, the shape of the groove 9 is as follows.
It is also possible to form the groove 9 into a mere square shape or a radius shape from the relationship of die-cutting and post-processing, and fit and fix the fixing portion 14c of the sheet holding member 11 having an outer diameter slightly larger than the inner diameter into the groove 9. Further, the fitting direction of the sheet holding member 14 into the groove 9 is not limited to the front direction of the groove 9, but may be, for example, the longitudinal direction of the groove 9 having an L-shaped cross section from one longitudinal end surface of the U-shaped groove 5. In this case, one end in the longitudinal direction of the sheet holding member 14 functions as a driving portion.

As described above, in the above-described embodiment, the weed control sheet 10 including the sheet 13 and the sheet holding member 14 is used.
Are integrally fixed to the side surfaces 5a and 6a of the concrete secondary product such as the U-shaped groove 5 and the curb 6, and the boundary between the U-shaped groove 5 and the asphalt 4 and the boundary between the curb 6 and the interlocking block 7. Since the flexible sheet 13 is disposed in the gap 13, a gap formed in advance at a boundary portion or a gap generated with the passage of time can be closed by the sheet 13, and the weeds scattered by the sheet 13 can be closed. The infiltration of seeds into the base material 8 is prevented, and the upward growth of the seeds of the weeds contained in the base material 8 is reliably prevented.

In particular, since the sheet 13 of the weed control sheet 10 has a double structure of the sheet main body 13a and the protective cover 13b covering the same, and both members have the weed control performance, the growth of the weeds for a long period of time. It can be more reliably prevented. As a result, weeds do not grow from the boundary between the U-shaped groove 5 and the curb 6 that divides the roadway 2 and the sidewalk 3, so that it is possible to prevent the appearance of the road 1 from being impaired or to prevent traffic from being hindered. The maintenance of the road 1 can be performed easily, for example, by preventing the asphalt 4 from being damaged by the damage and by minimizing the regular maintenance work such as the weed removal work. For example, the cost burden of the local government managing the road 1 Can be greatly reduced.

Further, since the weed prevention sheet 10 is formed by the flexible sheet 13 and the sheet holding member 14 fixed to these ends, the secondary concrete product maker makes the weed prevention sheet 10. The sheet holding member 14 and, for example, the U-shaped groove 5 and the curb 6 can be easily integrated by insert molding, thereby reducing the manufacturing cost.
Installation work on the construction site such as the U-shaped groove 5 with the grass sheet 10 can be performed more easily, and for example, the construction period of the road 1 can be shortened.

If the grooves 9 are formed in advance in the U-shaped groove 5 or the like, the grass sheet 10 can be fixed to only a predetermined concrete secondary product by retrofitting according to the situation at the construction site. Thus, the grass sheet 10 having excellent versatility can be obtained, for example, the grass sheet 10 can be installed according to the construction site. Particularly, when the grass sheet 10 is retrofitted to the concrete secondary product, the ribs 14b formed integrally with the sheet holding member 14 can be fitted into the grooves 9 by hitting with a hammer. The fixing work to the product can be performed more easily.

Further, the seat 13 is a seat body 13a.
And a transparent protective sheet 13b that covers the front and back surfaces and the front end of the sheet body 13a.
Even when the concrete secondary product to which the grass sheet 10 is fixed is stored outdoors, the penetration of the rainwater or the like into the sheet body 13a is prevented, and the penetration of the sheet 13 is prevented. Performance such as flexibility and weed control can be stably maintained over a long period of time. Further, since the protection sheet 13b is transparent, the sheet 1
The state of 3 can be easily grasped visually from the outside,
It is possible to use the weed prevention sheet 10 in a good state.

Further, the base material of the sheet holding member 14 or the raw material of the sheet 13 having a predetermined width, which is formed in advance by a resin, is cut into predetermined dimensions in accordance with the shape of the secondary concrete product. 14 and a sheet body 13a, and a protective sheet 13 such as a plastic bag is attached to the sheet body 13a.
b, and is fixed to the sheet holding member 14 with a metal stylus 16 such as a stapler, so that the weed prevention sheet 10 can be easily manufactured. It becomes possible to provide an inexpensive weed control sheet 10 to the next product manufacturer.

The present invention is not limited to the above-described embodiment, but includes the following modifications. That is, first, in the above embodiment, the U-shaped groove 5
Sheet 1 only on one side 5a, 6a of the stone or curb 6
2, the grass sheet 10 can be fixed to the other side surface 5b of the U-shaped groove 5 to which the curb 6 is connected, as shown by the two-dot chain line a in FIG. Depending on the form, the weed control sheet 10 is also provided on the other side surface 6 b of the curb 6.
Can also be fixed.

Further, in the above embodiment, the length L of the sheet holding member 14 and the sheet 13 of the weed control sheet 10 is set substantially equal to the length of the secondary concrete product. As shown in the figure, the length of the sheet 13 of the weed control sheet 10 is set to be longer than the length L of the concrete secondary product or the sheet holding member 14 by a predetermined size, and one end (or both ends) of the sheet 13 is set to a predetermined length in the longitudinal direction. You may make it protrude. In this way, the gap between the longitudinal boundary portions of the concrete secondary product to be joined in the longitudinal direction is set to the sheet 1.
3, so that the growth of weeds around the concrete secondary product is more reliably prevented.

Further, in the above-described embodiment, the rib portions 14b of the sheet holding member 14 of the weed prevention sheet 10 are integrally fixed so as to abut on the side surface 6a of the U-shaped groove 6 in a protruding state. For example, as shown by a two-dot chain line in FIG. 9, the rib portion 14 can be integrally fixed so as to be substantially flush with the side surface 6 a of the U-shaped groove 6. Further, in the above embodiment, the case where the secondary concrete product is the U-shaped groove 5, the curb 6 and the interlocking block 7 has been described. However, the present invention provides, for example, an inclined block for drainage and a rectangular cross section. The present invention can be applied to various concrete secondary products used as road surface materials such as drain blocks.

Further, in the above embodiment, the shape of the sheet holding member 14 of the weed-proof sheet 10 and the corresponding groove 9 of the concrete secondary product is, for example, a simple plate shape.
An appropriate shape such as an L-shaped cross section or a tapered cross section may be adopted, and a variety of forms may be used without departing from the gist of each invention according to the present invention, such as using a translucent or opaque bag as the protective cover 13b. Can be changed.

[0038]

As described above in detail, according to the first aspect of the present invention, the sheet holding member fixed to one end in the longitudinal direction of the sheet is formed by the groove formed on the boundary surface of the road surface material. The flexible sheet can be projected outside the boundary surface of the road surface material by a predetermined dimension, and another road surface material can be placed on the upper surface of the sheet. The gap at the boundary portion is closed by the sheet located at the lower part of the portion, and the growth of weeds from the gap can be reliably prevented.

According to the second aspect of the invention, in addition to the effect of the first aspect, the rigidity of the sheet holding member can be increased by the rib portion, and the stable shape of the weed prevention sheet is maintained. It is possible to attach the grass sheet to the boundary surface of the road surface material by driving the rib portion while the fixing portion corresponds to the groove, so that the grass sheet can be easily fixed to the road surface material, It is possible to provide a herbicidal sheet having excellent properties.

According to the third aspect of the invention, in addition to the effects of the first or second aspect, the sheet is fixed to the flat portion of the sheet holding member by the metal needle, so that the sheet and the sheet holding member Thus, the herbicidal sheet itself can be easily manufactured, and an inexpensive herbicidal sheet can be provided.

According to the fourth aspect of the present invention, a concrete secondary product to which a sheet holding member of a weed prevention sheet is fixed is installed on a base material, so that a flexible sheet is positioned outside a boundary surface. Because it will be in a state of protruding a predetermined dimension,
Other concrete secondary products and the like can be placed on this sheet, and the gap formed at the boundary portion of the concrete secondary product is closed by the sheet, and the growth of weeds can be reliably prevented. Since the grass sheet is fixed to the secondary concrete product in advance, the construction can be easily performed.

According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect, since the sheet body is covered with the non-permeable protective sheet, for example, the secondary concrete product can be put outdoors. Prevents the penetration of rainwater into the sheet body during storage and the penetration of concrete into the sheet body when insert-molding the grass sheet into a concrete secondary product, stabilizing the performance of the sheet body such as flexibility. Can be maintained.

According to the sixth aspect of the present invention, in addition to the effects of the fourth or fifth aspect of the present invention, the weed prevention sheet having the sheet body covered with the protective sheet is integrated with the secondary concrete product by insert molding. Since the concrete secondary product is fixed, it is possible to easily produce a concrete secondary product with a grass-proof sheet, and to provide a cheaper secondary product.

[Brief description of the drawings]

FIG. 1 is a partially sectional perspective view of a road structure using a concrete secondary product with a weed-proof sheet according to the present invention.

FIG. 2 is a perspective view of the U-shaped groove.

FIG. 3 is a perspective view of the curb.

FIG. 4 is a partially broken perspective view of the grass sheet.

FIG. 5 is a plan view of the same.

FIG. 6 is a front view of the same.

FIG. 7 is a sectional view taken along line AA of FIG. 5;

FIG. 8 is a perspective view showing a method for manufacturing the curb with the grass sheet.

FIG. 9 is a sectional view of an essential part of the same.

FIG. 10 is a cross-sectional view of a principal part showing another method for manufacturing a curb with the other grass-proof sheet.

FIG. 11 is a sectional view showing a conventional road structure.

[Explanation of symbols]

 1 ... road 2 ... road 3 ... sidewalk 4 ... asphalt 5 ... ... U-shaped groove 5a, 5b ... Side surface 6 ... ... Curb 6a, 6b ... Side surface 7 ... ······ Interlocking block 8 ·························································· ... Sheet 13a... Sheet body 13b... Protective sheet 14... Sheet holding member 14a. ··· Plane portion 14b ······· Rib portion 14c ························································· Mold 18・ ・ ・ ・ ・ ・ ・ ・ ・ Guide bar 19 ・········slit

Claims (6)

[Claims] 1. A road surface weed prevention sheet disposed on a boundary portion of a road surface material covering an upper surface of a base material of a road such as a roadway or a sidewalk to prevent the growth of weeds from a boundary gap between adjacent road surface materials. ,
The grass sheet is fixed to a flexible sheet and one end of the sheet in the longitudinal direction, and a long sheet holding member capable of fitting into a groove provided at a boundary surface of the road surface material. And a member, and a road surface weed prevention sheet. 2. The seat holding member according to claim 1, further comprising: a fixing portion fixed to a groove provided at a boundary surface of the road surface material; and a rib portion capable of increasing rigidity of the sheet holding member and contacting a side surface of the concrete secondary product. The grass sheet for road surface according to claim 1, comprising: a flat portion formed between the rib portion and the fixing portion and to which the sheet is fixed. 3. The sheet holding member is formed of a resin material.
3. A road grass sheet according to claim 1, wherein an end of the sheet is fixed to the flat surface with a plurality of metal needles. 4. A concrete secondary product which can be formed on a base material such as a roadway or a sidewalk to form a part of a road, wherein a groove is provided on a side surface serving as a boundary surface of the concrete secondary product. The groove is fitted with a sheet holding member of a grass sheet having a flexible sheet and a long sheet holding member fixed to an end of the sheet in a longitudinal direction. Secondary product with road weeding sheet. 5. The weed control sheet according to claim 4, wherein the weed prevention sheet is formed of a sheet main body having a weed prevention performance and a non-water permeable protection sheet covering an outer peripheral surface of the sheet main body. A secondary concrete product with road weeding sheet. 6. The grass sheet according to claim 4, wherein the sheet holding member is integrally fixed to the secondary concrete product by insert molding. Concrete secondary products.