JP2879190B2 - Weed control structure and concrete products used for it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weed-proof structure capable of preventing weeds from growing on the ground and a weed-proof sheet used for the same, and further relates to a ground for which such a weed-proof structure is employed. Related to juxtaposed concrete products.

[0002]

2. Description of the Related Art There is a method of spraying a herbicide on a roadbed before applying asphalt pavement. In addition, actual opening 4-11
No. 2923, a weed-proofing structure for a pavement road, characterized in that a weed-proof sheet is laid under the pavement mixture layer, the end is bent vertically, and the tip reaches the surface of the pavement road. Are also known.

[0003]

On the roads of local cities, there are many places near fields and mountains, and sidewalks with few users tend to grow weeds at the ends. This is due to the natural environment that is endowed with the seeds of weeds, and the fact that germination is less likely to be hindered due to less stepping on pedestrians and the like.
In addition, as a background of the occurrence of weeds, there are the following reasons from the viewpoint of the pavement structure.

[0004] Asphalt pavement on the sidewalk is composed of stone grains, stone powder,
It is a porous solid with a mixture of asphalt and a layer thickness of about 4 cm. For this reason, the boundary surface where the asphalt pavement and the pedestrian road boundary block, the land boundary block, and the like come into contact may not be in a completely close contact state, but may have a gap. For this reason, the sprouts germinated on the roadbed and subgrade soil easily penetrate through such gaps. In addition, the subgrade soil and the roadbed on which the embankment is constructed are compacted by their own weight and the overload of a pedestrian or the like, causing uneven settlement, and the pedestrian road boundary block and the land boundary block also tilt due to settlement. For these reasons, gaps are likely to occur at the boundary between the asphalt pavement and the block, and the seeds contained in the gap will germinate and grow.

[0005] By the way, there are the following two reasons for the first weed to grow at this boundary. (B) Weed seeds and roots already mixed in when subgrade soil (mainly mountain soil is used) and roadbed material (mainly crushed stone used) are germinated after asphalt pavement .
Alternatively, the seeds of weeds are carried into the flow of wind or rainwater immediately after construction of the subgrade soil or the roadbed and left without asphalt pavement, and germinate after the asphalt is put on. (B) After the asphalt pavement is installed, the seeds of the weeds that have been transported by the flow of wind or rainwater and germinate in the gap created at the boundary between the asphalt pavement and the block.

The process by which the germinated weeds grow and propagate is as follows. In the first year, the nutrients contained in the seeds and the small amount of sediment in the crevice are used as nutrients, so the growth of both roots, stems and leaves is small, but after the second year, it was stored in the roots in the previous year The shoots that germinate on the basis of nutrients and spread on the surface of the ground expand the leaves, receive sufficient sunlight, send nutrients to the roots by the action of photosynthesis, and make the roots fat. Then, the roots feed nutrients to the stems and leaves, and the roots, stems and leaves grow in correlation with each other, and grow larger as the year progresses, breeding while pushing up or piercing the asphalt pavement. In the case of rhizome-type plants, the roots also extend in the lateral direction and germinate therefrom, so that the area spreads quickly.

As described above, weeds grow at the boundary between the asphalt pavement and the sidewalk boundary block or the land boundary block at first, but the weed control structure described in the prior art is based on this boundary. It is not intended to prevent germination of the pavement layer itself. Therefore, the conventional technique described above cannot prevent the shoots from penetrating at this boundary. Even when the herbicide is applied, it is difficult to kill all of the seeds contained in the soil because a large amount of the herbicide is required and the construction and environmental pollution are difficult.

[0008] The present invention has been devised to solve the above-mentioned problems.
Weed prevention structure that can effectively avoid weeds on the ground,
An object of the present invention is to provide a concrete product used for the weed prevention structure.

[0009]

According to a first aspect of the present invention, a concrete product is disposed on a side of a ground to be subjected to weed control, and the concrete product is disposed on the ground. A sheet for laying grass is laid on the side of the concrete product so that the edge of the sheet horizontally shields a boundary between the concrete product and the ground. It is. According to a second aspect of the present invention, in the weed prevention structure according to the first aspect, a pavement is provided on the ground including the weed prevention sheet. Furthermore, a third aspect of the present invention is the weedproofing structure according to the first or second aspect, wherein the concrete product is provided with an attachment portion to an end portion of the weedproof sheet.

[0010]

The seeds and roots that have been mixed in the roadbed or subgrade soil before the construction of the weed control sheet try to extend the buds up, but are blocked by the weed control sheet and cannot reach the ground. in this case,
The seeds and roots are rich in soil and moisture, but eventually die and die because no buds can emerge on the surface. Further, after the application of the grass sheet, a gap may be formed at a boundary between the asphalt pavement and the pedestrian road boundary block or the land boundary block. Then, the seeds of the weeds enter the gaps and start rooting there and try to extend the roots downward. However, the roots are hindered by the grass sheet and stop growing. The germination also initially grows upwards with the nutrients contained in the seeds, but for the reasons described above, the roots are insufficiently developed, so that no nutrients can be supplied and they survive or die.

That is, since the root, stem and leaf growth are correlated and integrated and simultaneous, the laying of the weed control sheet inhibits either germination or rooting and suppresses the growth of weeds. The earth and sand clogging the gaps between the asphalt pavement and the pedestrian road boundary block or the land boundary block are blocked from the roadbed and subgrade soil by the grass sheet, and the supply of underground moisture by the capillary phenomenon It is easy to dry without being obtained. This also helps to reduce weed growth.
Further, when the grass sheet is covered by the pavement as in the invention of claim 2, there is an advantage that the surrounding scenery is not spoiled. Furthermore, in the invention of claim 3, since the end portion of the weed prevention sheet can be fixed, it is possible to prevent the weed prevention sheet from shifting during construction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 7 denotes subgrade soil, 2 denotes subgrade, and pedestrian road boundary blocks 4 and ground boundary blocks 5 are laid on both sides of the subbase 2 so as to face each other. . The sidewalk boundary block 4 and the ground boundary block 5
The sheet insertion groove 3 is formed on the opposing surface of. After the pedestrian road boundary block 4 and the land boundary block 5 are laid and the roadbed is constructed, the weed control sheets 6 are separately placed on the roadbed 2 near these two blocks 4 and 5, respectively, The sheet insertion groove 3 corresponding to the end of the sheet
Plug in. Next, an asphalt emulsion for improving the adhesion-physical property between the roadbed and the asphalt layer is sprayed on the grass-proof sheet 6 and the roadbed to finish the asphalt coating. In addition, since asphalt bites into the sheet insertion groove 3, the adhesion between the concrete surface and the asphalt lining is enhanced, and the insertion groove itself also promotes the weed control effect. Further, it is preferable that a sheet fixing pin be driven into the sheet insertion groove 3 so that the sheet does not move when the asphalt is scattered or rolled.

In FIG. 1, a method for fixing the end of the weed control sheet 6 to a footway boundary block or a land boundary block is as follows.
Although the sheet fixing pin is used, the following method may be employed. FIG. 2 shows a case where, after the roadbed is constructed, a grass-proof sheet 9 having a hook-shaped end portion is hooked to a seat hook 8 provided on the back surface of the sidewalk boundary block so as to be closely attached. Next, asphalt emulsion is sprayed on the grass sheet 9 and the roadbed to finish the asphalt surface.

Further, as shown in FIG. 3, at the time of forming the sidewalk roadway boundary block 4, the end of the weed prevention sheet 6 may be embedded in advance. In the thus-produced roadbed, the pedestrian roadway boundary block in which the end of the weedproof sheet 6 is embedded is laid, and the hanging weedproof sheet 6 is rolled up on the block. To construct. Next, the rolled-up grass-proof sheet 6 is lowered on the roadbed and laid horizontally, and then the asphalt emulsion is sprayed on the grass-proof sheet 6 and the roadbed to finish the asphalt pavement.

In FIG. 4, a bendable L-shaped seat hook 10 is attached to the sidewalk boundary block,
In this way, the grass sheet 6 is attached. In this case, when the roadbed 2 is constructed, the vertical portion of the seat hook 10 is erected along the wall surface of the footway boundary block 4 as shown by the broken line in FIG. The vertical portion of the L-shaped seat hook 10 provided on the back side of the roadway boundary block is laid down, and the end of the weed prevention sheet 6 is overlaid thereon and attached closely. Next, the asphalt emulsion is sprayed on the grass sheet 6 and the roadbed to finish the asphalt molding. In addition, it is preferable that a method of attaching the overlapping portion be such that it can be easily fixed by a snap type or the like for fastening clothes.

In FIG. 5, the groove into which the weed prevention sheet 6 is inserted has a U-shape, and the width of the groove in the vertical direction is slightly larger than the thickness of the weed prevention sheet 6. The construction method is the same as in FIG. Further, it is preferable that a sheet fixing pin can be driven into the sheet insertion groove 11. In addition, since the sheet insertion groove 11 can be cut at the site into a conventional block laid earlier, the present invention can be used even when the damaged lining is peeled off and replaced.

In FIG. 6, after the roadbed is constructed, the end of the weed prevention sheet 6 is mounted on the exposed portion of the seat hook 12 provided on the back surface of the pedestrian road boundary block and closely attached. Next, the asphalt emulsion is sprayed on the grass sheet 6 and the roadbed to finish the asphalt pavement. It is preferable that the overlapped portion can be easily fixed as in FIG.

In FIG. 7, an L-shaped seat hook 13 is attached to the sidewalk block 4. In the embodiment of FIG. 7, the end of the weed prevention sheet 6 is inserted into the gap between the vertical portion of the seat hook 13 and the sidewalk boundary block 4, and the purpose is to secure the gap size. Therefore, the spacer 15 is interposed in advance in this gap. That is, after constructing the roadbed, the spacer 15 inserted between the vertical portion of the seat hanger 13 and the concrete surface is pulled out, and the end of the weed-proof sheet 14 is inserted into the spacer 15 and attached in a tight state. Next, weed control sheet 14
And asphalt emulsion on the roadbed to finish the asphalt lining. In addition to the L-shaped sheet, the grass sheet 14 may be formed into a flat sheet so that the sheet can be bent.

FIG. 8 shows a structure according to claim 1 in which the end of the grass sheet is bent downward and adheres to the surface of the concrete product. The construction method is as follows. After laying the sidewalk block, the end of the grass sheet 16 is fixed to the backside with the sheet fixing pin 17, and the other end is rolled up on the sidewalk block. Lay it on the roadbed and spray asphalt emulsion to finish asphalt.
It is preferable that the grass sheet 16 be folded into a flat sheet or processed into an L shape as in FIG.

The material of the weed prevention sheet must be a material that does not penetrate the roots and buds of weeds and that is resistant to corrosion and can withstand heat when paving heated asphalt. It is desirable to have a supple thing that fits well into the roadbed and asphalt and becomes one.

The concrete products described in the claims include many types other than the above-described sidewalk boundary block and ground boundary block. The main ones will be described below for each application. (B) Boundary block The boundary between the sidewalk and the roadway includes a sidewalk boundary block and a sidewalk separation block, and the boundary between the sidewalk and private land includes a front end boundary block. (B) Gutter The gutter is to be installed parallel to the outside of the roadway or sidewalk, mainly for draining rainwater and snowmelt water on the road surface. The shape of the cross section of the water passage is U-shaped, circular, etc., and various types of external shapes are manufactured and sold by each manufacturer. (C) Drainage channel for drainage This is installed parallel to the outside of a roadway or sidewalk, and is for multipurpose purposes such as drainage of rainwater and snowmelt water on the road surface, agricultural water, agricultural drainage, domestic drainage and the like. The shape and appearance of the cross section of water passage are the same as those of the above-mentioned gutter. (D) Retaining wall This is used to stably maintain the height difference between the road and the outside of the road.
There are molds, trapezoidal gravity type and others. (E) Tree-planting basin Surrounds the root of a tree planted on the sidewalk. Depending on the manufacturing method, there are a precast product manufactured in a factory and a product manufactured by casting ready-mixed concrete on site.

The present invention is mainly used for weed control on asphalt pavement of a sidewalk, but it is also applicable to a parking lot, a dog running (a flat portion provided in the middle of a slope or a hem), a swimming pool. It can also be used for garments around the hotel and around tennis courts.

[0023] In addition, the following are the main types of surfacing materials other than asphalt, but the mechanism by which weeds grow on these pavements is the same as that of the above-mentioned asphalt surfacing. The weed control structure of the present invention is effective. (A) Cast-in-place concrete pavement Pavement where concrete is poured onto the roadbed and the surface is leveled with a trowel. (B) Concrete flat pavement A pavement with mainly square concrete boards laid on the roadbed. (C) Interlocking block lining The brick is mainly made of concrete, and is laid on the roadbed. The blocks are uneven on all sides, and the blocks are laid one after the other. Are designed to engage. (D) Brick pavement Pavement with bricks laid on the roadbed. (E) Wooden block pavement Pavement in which wooden blocks such as dice and bricks are laid on the roadbed. It should be noted that weeds tend to grow on all joints in the linings of Ro, Ha, Ni, and E, so it is good to spread a weed prevention sheet on the entire surface of the lining.

[0023]

The effects of the present invention are as follows. According to the present invention, since the grass sheet is attached so as to cross the boundary between the ground and the concrete product to be treated, the gap between the ground and the concrete product is securely closed. Therefore, the weed control effect is ensured.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of an asphalt sidewalk showing a weed control structure of the present invention.

FIG. 2 is a partial cross-sectional view of a sidewalk showing another alternative to the weed prevention structure.

FIG. 3 is a partial cross-sectional view of a sidewalk showing another alternative to the weed prevention structure.

FIG. 4 is a partial cross-sectional view of a sidewalk showing an alternative weed prevention structure.

FIG. 5 is a partial cross-sectional view of a sidewalk showing another alternative to the weed prevention structure.

FIG. 6 is a partial cross-sectional view of a sidewalk showing another alternative to the weed prevention structure.

FIG. 7 is a partial cross-sectional view of a sidewalk showing another alternative to the weed prevention structure.

FIG. 8 is a partial cross-sectional view of a sidewalk showing another alternative to the weed prevention structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Asphalt furnishing 2 ... Roadbed 3, 11 ... Seat insertion groove 4 ... Pedestrian road boundary block 5 ... Ground boundary block 6, 9, 14, 16 ... Weed prevention sheet 7 ... Roadbed soil 8, 10, 12, 13 ... Seat hanger 15 ... Spacer 17 ... Sheet fixing pin

Claims (3)

(57) [Claims] In a region where a concrete product is arranged on a side of a ground to be treated for weeding, a sheet for weeding is laid on the ground, and an end of the sheet is attached to the ground. A weed prevention structure, wherein the structure reaches a side surface of the concrete product so as to horizontally shield a boundary portion between the concrete product and the ground. 2. The weed prevention structure according to claim 1, wherein a pavement including the weed prevention sheet is paved on the ground. 3. The concrete product according to claim 1, wherein the concrete product has an attachment portion to an end of the grass sheet.