JP2011099230A - Boundary block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a boundary block capable of eliminating the need of fixing a weed-preventive sheet to the concrete block part at a construction site in a construction for laying a boundary block having a weed-preventive sheet on a paved road, and of easily constructing a road surface to be covered by the weed-preventive sheet. <P>SOLUTION: This boundary block 1 includes a holding means for holding the rolled up state of the weed-preventive sheet 3 in which the weed-preventive sheet fixed to the side surfaces of the concrete block part 2 excluding one end is rolled up so as not to extend downward to the bottom end of the concrete block part 2. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a boundary block laid on a boundary such as a roadway or a sidewalk, and more specifically, has a structure in which a weedproof sheet that prevents weeds from growing on the boundary with a paved road in contact with the boundary block is fixed. It has a boundary block.

  A concrete boundary block is continuously installed at a boundary that divides the paved road according to its purpose, for example, a boundary between a roadway and a sidewalk. There is a slight gap at the boundary where the boundary block and the asphalt of the pavement are in contact with each other, and it is often the case that soil such as weeds accumulated in the gap accumulates and plants such as weeds grow. In addition, plant roots and seeds mixed in the roadbed before asphalt pavement may germinate and grow from the gap between the asphalt and the boundary block after asphalt pavement.

  Therefore, boundary blocks have been developed in which a weedproof sheet is secured to the concrete block. In this boundary block, the gap between the asphalt and the boundary block is covered with a herbicidal sheet, or the grassy sheet is laid under the asphalt to prevent the plant from growing. For example, Patent Document 1 discloses a boundary block in which one end portion of a weedproof sheet is closely attached to a concrete block portion using an adhesive means, and after placing a concrete block portion and constructing a roadbed, It is disclosed that the other end portion of the weedproof sheet fixed to the concrete block portion is laid on the roadbed, and then asphalt is further laid. In this structure, the seeds and roots of the weeds contained in the roadbed before asphalt pavement will germinate after pavement and try to grow upwards, but they cannot be released to the surface because they are blocked by the weedproof sheet. Wither and die. In addition, when seeds that have entered the gap from the surface after asphalt pavement are going to root, they cannot grow due to being blocked by the herbicidal sheet.

JP-A-8-60632

  By the way, in this boundary block, after placing the concrete block part and constructing the layer (asphalt or roadbed) to be covered by the weedproof sheet, the end of the weedproof sheet is fixed to the concrete block part, Or, when molding the concrete block portion, it was necessary to fix the end portion of the weedproof sheet in advance.

  However, after placing the concrete block part and constructing the layer to be covered by the weedproof sheet, when fixing the end of the weedproof sheet to the concrete block part, work must be done at the construction site. However, the work process at the construction site increases and is troublesome.

  On the other hand, when the edge of the weedproof sheet is fixed to the concrete block portion in advance, the weedproof sheet hangs down from the concrete block portion. When constructing a layer, the grass protection sheet hinders the construction. Therefore, at the time of construction, an operation of lifting the other end of the weedproof sheet is required, and the operation is complicated.

  The present invention has been made in view of such circumstances. The purpose of the present invention is to provide a concrete block portion of a weedproof sheet at a construction site when a boundary block having a weedproof sheet is laid on a paved road. Accordingly, it is an object of the present invention to provide a boundary block that can be easily constructed on a road surface to be covered with a grass prevention sheet.

The present invention has been proposed in order to achieve the above-mentioned object. According to the first aspect of the present invention, a paved road is laid at a boundary between a first area and a second area. In the boundary block to divide,
The boundary block includes at least one of a concrete block portion having a first side surface facing the first area side and a second side surface facing the second area side, and the first side surface and the second side surface of the concrete block portion. And a weedproof sheet capable of covering the boundary between the concrete block portion and the sectioned area by fastening one end to the side of the wall and hanging down the remaining portion.
The weedproof sheet is a boundary block characterized by comprising holding means for holding the raised state so that the remaining portion of the weedproof sheet does not hang down to the lower end of the concrete block portion. .

According to a second aspect of the present invention, the holding means is constituted by an adhesive layer formed on one surface of the remaining portion facing the side surface in a state where the grass protection sheet hangs downward from one end on the fastening side. And
During the construction of paving the pavement with the concrete block placed in place, the remaining part is raised and the raised state is maintained by the adhesive force of the adhesive layer, and the adhesive layer is peeled off once after the paving work. 2. The boundary block according to claim 1, wherein after the remaining portion is hung down, the remaining portion is extended from the side surface to the surface of the pavement and can be attached by an adhesive layer.

  According to a third aspect of the present invention, the holding means has an intermediate part that can be spanned across the width direction on the concrete block part, and leg parts that extend downward from both ends of the intermediate part. It is constituted by a sandwiching tool, and the remaining portion of the weedproof sheet is rolled up along the concrete block portion side, and in this state, the weedproof sheet can be sandwiched and held by the legs. 1 is a boundary block according to 1.

According to the present invention, the following excellent effects are exhibited.
The boundary block of the present invention includes a concrete block portion having a first side surface facing the first area side and a second side surface facing the second area side, and a first side surface and a second side surface of the concrete block portion. A herbicidal sheet capable of covering one end of at least one side surface and hanging down the remaining part to cover the boundary between the concrete block part and the sectioned area. Since there is a holding means for holding the raised state so that the remaining portion of the sheet does not hang down to the lower end of the concrete block portion, the grass protection sheet is fixed to the concrete block portion at the construction site. There is no need to carry out the work separately, and the grass protection sheet does not interfere with the construction when the road surface to be covered by the grass protection sheet is installed after the boundary block is placed. Accordingly, it is possible to avoid complication of work in the construction of laying the boundary block provided with the grass prevention sheet.

It is a perspective view which shows the boundary block of 1st Embodiment. It is sectional drawing of the boundary block shown in FIG. It is a schematic sectional drawing which shows the state which the weed prevention sheet | seat fixed to the boundary block coat | covered the boundary with asphalt. It is sectional drawing of the boundary block which fastened the grass prevention sheet | seat on both sides and was hold | maintained with the protection sheet. It is sectional drawing of the boundary block which hold | maintained the weedproof sheet with the clamping tool. It is sectional drawing of the boundary block which fastened the weedproof sheet only to one side and was hold | maintained with the protective sheet. It is explanatory drawing which shows the method of fixing a weedproof sheet to the concrete block part shape | molded later. It is sectional drawing of the boundary block which fastened the weedproof sheet which coat | covers the road surface from which height differs in the 1st area and the 2nd area to the same height. It is sectional drawing of the boundary block which fixed the grass prevention sheet | seat which coat | covers the road surface from which height differs in a 1st area and a 2nd area, respectively, differing in height.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing a boundary block 1 according to the first embodiment, and FIG. 2 is a cross-sectional view of the boundary block 1 shown in FIG. FIG. 3 is a schematic cross-sectional view showing a state in which the weedproof sheet 3 fixed to the boundary block 1 covers the boundary with the asphalt 7.

  The boundary block 1 is a block that is continuously arranged along a boundary that divides a paved road into a first area and a second area (for example, a roadway and a sidewalk), and is a concrete block that is laid on the boundary. Part 2 and a weedproof sheet 3 fastened to at least one side of a first side facing the first section of concrete block part 2 and a second side facing the second section. ing.

  This weedproof sheet 3 can cover the boundary between the concrete block portion 2 and the sectioned area in a state where the remaining portion other than one end fixed to the side surface of the concrete block portion 2 is hung down. It is set to length. In addition, the boundary block 1 includes holding means for holding the raised state in which the remaining portion of the grass protection sheet 3 is raised so as not to hang down to the lower end of the concrete block portion 2.

  As shown in FIGS. 1 and 2, the concrete block portion 2 is provided with a protruding portion 8 at the lower end of the concrete block portion 2 so that the cross section is generally convex. The projecting portion 8 extends from the side surface of the concrete block portion 2 through the curved portion 9 so that the upper surface is substantially flush with the road surface. For this reason, when laying on a paved road, the curved portion 9 allows rainwater to flow smoothly and makes it difficult to deposit earth and sand.

  Moreover, the weedproof sheet 3 is fastened in a state in which one end is embedded in each side surface so as to have the same height on each side surface of the concrete block portion 2. This weedproof sheet 3 can cover the gap 6 at the boundary between the concrete block portion 2 and the paved road so that the projecting portion 8 extends along the curved portion 9 from the side surface below the fastening position of the concrete block portion 2. The length up to the tip is set to a length obtained by adding the expected size of the gap 6 and the length for securely fixing to the surface of the pavement. By covering this gap 6, the plant It can be prevented from growing. Further, the weedproof sheet 3 has at least one end portion in the width direction of the weedproof sheet 3 (longitudinal direction of the concrete block 2), for example, a widened portion 10 that protrudes from the concrete block portion 2 outward in the width direction by about 100 mm. Is formed. The widened portion 10 is a portion used as an overlap margin with the adjacent weedproof sheet 3, and can prevent a break between adjacent weedproof sheets 3. In addition, in 1st Embodiment, although the wide part 10 is formed in the one end part of the width direction of the weed prevention sheet 3, it does not restrict to this, The wide part at the both ends of the width direction of the weed prevention sheet 3 10 may be formed.

  Here, as for the weed prevention sheet 3, what has light-shielding property, corrosion resistance, heat resistance, and water permeability is desirable, for example. The light-shielding property is to prevent light from passing through the plants mixed in the lower part of the herbicidal sheet 3, and the water-impermeable property is that water is present in the gap 6 under the herbicidal sheet 3. This is to prevent entry.

  The remaining part other than the one end part of the grass protection sheet 3 fixed to the concrete block part 2 is a surface (constructed) facing the side surface of the concrete block part 2 in a state of hanging downward from one end part on the fixing side. A pressure-sensitive adhesive layer 4 having water resistance after adhesion is formed on the surface facing the asphalt 7 in a state in which the subsequent weedproof sheet 3 is extended. Then, during the construction in which the concrete block portion 2 is placed at a predetermined position and the paved road is paved, the remaining portion is raised and the raised state is maintained by the adhesive force of the adhesive layer 4. In detail, as shown in FIG. 2, in the state which raised each grass prevention sheet 3 to the upper part along the side surface, it can peel again so that the adhesion layer 4 of both the grass prevention sheets 3 may be coat | covered from the top. A protective sheet 5 is attached so as to hang the upper part of the concrete block portion 2 from one side surface to the other side surface. Therefore, the force that the weedproof sheet 3 on both sides tries to sag downward is balanced by the force applied to the protective sheet 5 through the adhesive force between the adhesive layer 4 and the protective sheet 5. Can be held. Further, the adhesive layer 4 is once peeled off from the protective sheet 5 after the paving work, the remaining portion of the weedproof sheet 3 is hung down, and the remaining portion is lightly pressed from the surface. It is possible to stick by adhesive force in the state extended over the surface.

  Next, the manufacturing method of the boundary block 1 of 1st Embodiment is demonstrated. A mold (not shown) is used for molding the concrete block portion 2. One end portion of the weedproof sheet 3 to be fixed to the concrete block portion 2 is put in advance in this mold, and the remaining portion other than the one end portion of the weedproof sheet 3 is not fixed to the concrete block portion 2. As you put it out of the formwork. Thereafter, the concrete is poured into the mold, and is cured as it is for a predetermined time, and then the concrete block portion 2 is taken out of the mold, so that the weedproof sheet 3 can be fixed to the concrete block 2.

  Here, the pressure-sensitive adhesive layer 4 of the weedproof sheet 3 may be applied to the weedproof sheet 3 in advance, or may be applied after the weedproof sheet 3 is fixed to the concrete block portion 2. Further, one end portion of the weedproof sheet 3 uses a stopper (not shown) such as an anchor, an adhesive having a good affinity with concrete, or the reinforcing bar 11 embedded in the concrete block portion 2. Or can be firmly fixed.

  And the adhesive layer 4 is protected in the state which raised the remainder part of the weed prevention sheet 3 which is not fixed to the concrete block part 2 from the both sides to the upper part along the side of the concrete block part 2, respectively. However, if the protective sheet 5 is attached so that the upper part of the concrete block part 2 may be spanned, the boundary block 1 shown in FIGS. 1 and 2 can be manufactured.

  Next, a procedure for installing the boundary block 1 manufactured as described above at the boundary between the first area and the second area at the same height of the paved road will be described with reference to FIG. First, the concrete block 2 is placed on the roadbed 12 and the asphalt 7 is laid in a state where the grass protection sheet 3 of the boundary block 1 is rolled up. At this time, since the weedproof sheet 3 is in a state of being rolled up, it does not interfere with the laying work of the asphalt 7. Thereafter, the protective sheet 5 holding the raised state of the grass protection sheet 3 is peeled off, so that the grass protection sheet 3 hangs down along the side surface of the concrete block portion 2 as shown in FIG. In this state, the weedproof sheet 3 is adhered to the surface of the asphalt 7 with the adhesive layer 4. Therefore, when laying the asphalt 7 after placing the boundary block 1, the grass protection sheet 3 does not hinder the work, and after the asphalt 7 is installed, the grass protection sheet 3 is placed on the concrete block portion 2. Since it is not necessary to separately fasten with a fastening tool or the like, it is possible to avoid complication of work in the construction of laying the boundary block 1 provided with the grass prevention sheet 3.

  Next, the boundary block 1 according to the second embodiment will be described. FIG. 4 is a cross-sectional view of the boundary block 1 according to the second embodiment. Also in this case, as in the first embodiment, the concrete block portion 2 is fastened to the side surface in a state in which one end portion is embedded from both side surfaces so that the grass protection sheet 3 has the same height. The remaining portion of the weedproof sheet 3 that is not fixed to the concrete block portion 2 is raised up, and the upper end portion thereof is bent downward so that the adhesive layer 4 faces the side surface of the concrete block portion 2, and this adhesive layer 4 It adheres to the side of the concrete block part 2 with the adhesive force of. Moreover, the protective sheet 5 that covers the adhesive layer 4 facing away from the concrete block portion 2 is covered, and the upper end portion of the protective sheet 5 is fixed to the upper portion of the concrete block portion 2, so Holds the raised state.

  The manufacturing method of the boundary block 1 according to the second embodiment is the same as the first embodiment in that one end of the weedproof sheet 3 is fixed to the concrete block 2. Then, the remaining portion of the weedproof sheet 3 not fixed to the concrete block portion 2 is rolled up, the upper end portion is bent downward, and the adhesive layer 4 formed on the upper end portion is attached to the side surface of the concrete block portion 2. Adhere to. In this state, the protective sheet 5 is attached to the adhesive layer 4 that is not adhered to the side surface of the concrete block portion 2, and one end portion of the protective sheet 5 is fixed to the upper portion of the concrete block portion 2 as shown in FIG. A boundary block 1 can be manufactured.

  The structure in which the boundary block 1 is laid at the boundary between the first area and the second area is the same as that in the first embodiment. Further, the laying method is the same as that where the boundary block 1 is placed and the layer covered by the weedproof sheet 3 is applied. Thereafter, the protective sheet 5 is peeled off, and one end of the weedproof sheet 3 adhered to the side surface of the concrete block portion 2 is peeled off, so that the weedproof sheet 3 is made of concrete as in the case of the first embodiment. It hangs down along the block portion 2 to cover the gap 6 between the asphalt 7 and the concrete block portion 2, and the weedproof sheet 3 is adhered to the surface of the asphalt 7 by the adhesive layer 4. Therefore, also in this case, the same effect as in the first embodiment can be obtained.

  In both of the embodiments described above, the state in which the weedproof sheet 3 is lifted up using the adhesive layer 4 and the protective sheet 5 is maintained. However, the present invention is not limited to this. For example, the third embodiment shown in FIG. You may use the clamping tool 14 like this. Also in this case, as in the first embodiment, the concrete block portion 2 is fastened to the side surface in such a manner that one end portion is embedded from both side surfaces so that the grass protection sheet 3 has the same height. Protective sheet 5 that protects the adhesive layer 4 of the remaining portion in the state where the remaining portion of the weedproof sheet 3 that is not fixed to the concrete block portion 2 is rolled up and along the side surface of the concrete block portion 2. The grass protection sheet 3 is held in a state of being rolled up by being sandwiched by the legs of the clamping tool 14 from above. The sandwiching tool 14 has a U-shape having an intermediate portion having a length that can be spanned across the width direction on the concrete block portion 2 and leg portions extending downward from both ends of the intermediate portion. It is a fastener and is made of an elastic plastic material.

  The manufacturing method of the boundary block 1 of this 3rd Embodiment is the same as 1st Embodiment until the process of fixing the one end part of the weed prevention sheet 3 to the concrete block part 2. FIG. The remaining portion of the weedproof sheet 3 that is not fixed to the concrete block portion 2 is lifted up after the protective sheet 5 is pasted, and the remaining portion is sandwiched from the top of the protective sheet 5 by the holding tool 14. The boundary block 1 shown in FIG. 5 can be manufactured.

  Further, the structure in which the boundary block 1 of the third embodiment is laid at the boundary between the first area and the second area is the same as in the case of the first embodiment. Further, the laying method is the same as that where the boundary block 1 is placed and the layer covered by the weedproof sheet 3 is applied. Thereafter, when the protective sheet 5 is peeled off, by removing the clamping tool 14 that sandwiches the herbicidal sheet 3, the herbicidal sheet 3 hangs down along the concrete block portion 2 as in the case of the first embodiment, While covering the gap 6 between the asphalt 7 and the concrete block portion 2, the weedproof sheet 3 is adhered to the asphalt 7 by the adhesive layer 4. Therefore, also in this case, the same effect as in the first embodiment can be obtained. Note that the holding tool 14 can be used repeatedly.

  Furthermore, in the paved road in which the boundary block 1 of the first to third embodiments is laid, the side surfaces of both the first area and the second area are covered with the weedproof sheet 3, but only one of the areas is covered. You may coat | cover the weedproof sheet 3. In this case, the boundary block 1 is used in which the weedproof sheet 3 is fixed only on one side surface and the raised state is maintained. This boundary block 1 attaches the weedproof sheet 3 to the side surface as in the second embodiment, or attaches the weedproof sheet 3 using the clamping tool 14 as in the third embodiment, Alternatively, as shown in FIG. 6, the protective sheet 5 attached to the weedproof sheet 3 is fixed to the upper part of the concrete block part 2 by an appropriate method, so that only the one side surface of the concrete block part 2 has the weedproof sheet 3. Can be held in a raised state.

  The weedproof sheet 3 is not limited to the concrete block portion 2 that is fastened at the time of molding, but can be fastened after being molded. In this case, as shown in FIG. 7, the concrete block portion 2 provided with the groove-like recesses 13 over the width of the concrete block portion 2 is first molded, and then one end of the weedproof sheet 3 is formed. The part is bonded to the recessed part 13 using an appropriate bonding means such as an adhesive.

  Even when the road surface heights of the first area and the second area are different, the boundary block 1 of the present invention can be used. As shown in FIG. 8, in the area where the road surface is higher, the location where one end of the weedproof sheet 3 is fixed to the concrete block portion 2 and the upper surface of the asphalt 7 are substantially flush with each other. The weedproof sheet 3 extends horizontally therefrom. In addition, the present invention is not limited to this. When the top surface of the asphalt 7 is below the fixing position of the grass protection sheet 3, the grass protection sheet 3 is placed along the side surface of the concrete block portion 2 and then the boundary with the asphalt 7 is covered. do it.

  Furthermore, when the road surface heights of the first area and the second area are different, the fixing location of the weedproof sheet 3 and the thickness of the protruding portion 8 of the concrete block portion 2 may be changed. As shown in FIG. 9, in the area where the road surface is higher, the place where one end of the weedproof sheet 3 is fixed to the concrete block portion 2 is raised, and the upper surface of the protruding portion 8 is substantially the same as the upper surface of the asphalt 7. The thickness of the protrusion 8 is also increased so as to be flush with each other. And since this protrusion 8 has shape | molded the curved part 9 between the side surfaces of the concrete block part 2, rainwater can be smoothly flowed by this curved part 9 also in the area where the height of a road surface is high. It can be made difficult to deposit earth and sand.

  Further, the shape of the boundary block 1 and the structure of the paved road in which the boundary block 1 is laid out according to the embodiment of the present invention are not limited to the above, but the area and layer to be covered with the weedproof sheet 3 and the height of the road surface It is appropriately selected according to the paved road on which the boundary block 1 to which the weedproof sheet 3 is attached is to be laid.

DESCRIPTION OF SYMBOLS 1 Boundary block 2 Concrete block part 3 Weed prevention sheet 4 Adhesive layer 5 Protective sheet 6 Gap 7 Asphalt 8 Protrusion part 9 Bending part 10 Widening part 11 Reinforcement reinforcement 12 Subbase 13 Recessed part 14 Clamping tool

Claims (3)

In the boundary block that is laid at the boundary of the paved road and divides the paved road into a first area and a second area,
The boundary block includes at least one of a concrete block portion having a first side surface facing the first area side and a second side surface facing the second area side, and the first side surface and the second side surface of the concrete block portion. And a weedproof sheet capable of covering the boundary between the concrete block portion and the sectioned area by fastening one end to the side of the wall and hanging down the remaining portion.
The boundary block is provided with holding means for holding a raised state in which the remaining portion of the weed prevention sheet is rolled up so that the remaining portion does not hang down to the lower end of the concrete block portion. The holding means is constituted by an adhesive layer formed on one surface of the remaining portion facing the side surface in a state where the grass prevention sheet hangs downward from one end on the fastening side.
During the construction of paving the pavement with the concrete block placed in place, the remaining part is raised and the raised state is maintained by the adhesive force of the adhesive layer, and the adhesive layer is peeled off once after the paving work. 2. The boundary block according to claim 1, wherein after the remaining portion is hung down, the remaining portion is extended from the side surface over the surface of the pavement and can be attached by an adhesive layer.   The holding means is composed of a sandwiching tool having an intermediate part that can be stretched over the concrete block part in the width direction, and leg parts that extend downward from both end parts of the intermediate part. 2. The boundary block according to claim 1, wherein the remaining portion is rolled up along the concrete block portion side, and in this state, the grass protection sheet can be sandwiched and held by the leg portion.

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