JP2011208445A - Weed inhibition concrete product and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete product which is installable easily and which can effectively suppress, even if a gap is formed between itself and a pavement material, the growing of weeds through the gap.SOLUTION: This weed inhibition concrete product 1 is laid so as to be brought into contact with a pavement material. An elastic foam resin material 30 is disposed on the concrete product body 10 at positions a predetermined distance below the upper end of the contact surface 12 thereof with the pavement material 20. The concrete product body 10 and the elastic foam resin material 30 are formed integrally with each other.

Description

  The present invention relates to a concrete product, and more particularly, to a concrete product that suppresses the growth of weeds from a gap formed between the concrete and the pavement.

  Conventionally, concrete products such as pedestrian road boundary concrete blocks, gutters, and manholes exist. These concrete products are laid while paving with asphalt or the like at one end or both ends or the entire periphery. Immediately after laying, there is no gap between the concrete product and the pavement, and the good condition is maintained. However, as time goes by, the pavement becomes thin and a gap begins to appear between the concrete product and the pavement.

  When such a gap is formed, earth and sand are deposited there, and seeds of weeds also enter, absorb rainwater and the like, and weeds begin to grow from the gap. This weed not only deteriorates the landscape of the road, but if left unattended, it may block the field of view and may interfere with traffic safety. In addition, once weeds grow, even if they are removed, it is difficult to cut out the roots that have entered the back of the gap, and they are growing again.

  In order to solve the above problems, JP-A-8-60632 (Patent Document 1), JP-A 2001-159113 (Patent Document 2), JP-A 2001-214406 (Patent Document 3), JP-A-8 As described in Japanese Patent Publication No. 27757 (Patent Document 4), a technique has been proposed in which a weedproof sheet is laid between an asphalt pavement and a concrete product. According to these techniques, there is certainly a certain herbicidal effect. However, it takes time and effort to lay a weedproof sheet when laying concrete products, and it has not been put to practical use. May occur.

  In addition, as described in Japanese Patent Laid-Open No. 10-183555 (Patent Document 5), a technique for inserting a weedproof mat from above on the boundary between a concrete product and a paving material has also been proposed. According to such a technique, it is possible to effectively prevent seeds of earth and sand and weeds from entering a gap formed between the concrete product and the paving material. However, as described above, it takes time to insert the weedproof mat and is not put into practical use.

  Furthermore, as described in Japanese Patent Application Laid-Open No. 2002-61143 (Patent Document 6), a concave groove is provided at a contact surface portion with a concrete product in a pavement portion, and a filler made of a herbicidal insert is filled therein. Technology has also been proposed. According to this technique, there is a certain effect in controlling weeds due to the effect of the weedproof insert. However, since the pavement material is thin, a gap is generated between the concrete product and the filler or between the filler and the pavement, and weeds may grow from the gap. And since it is necessary to provide a ditch | groove in a pavement location along a concrete product, construction becomes large and takes a lot of work.

JP-A-8-60632 JP 2001-159113 A JP 2001-214406 A JP-A-8-27757 Japanese Patent Laid-Open No. 10-183555 JP 2002-61143 A

  In view of the above problems, the present invention provides a concrete product that is easy to construct and that can effectively suppress weeds from growing even if a gap is generated between the concrete product and the pavement. The issue is to provide.

  In order to solve the above problems, the present invention is a weed-suppressing concrete product laid so as to be in contact with a pavement material, and an elastic foamed resin material is provided at a predetermined downward position from the upper end of the contact surface with the pavement material in the concrete product body. By arranging, the concrete product main body and the elastic foamed resin material are integrated.

  Moreover, this invention can employ | adopt the structure whose said elastic foamed resin material is a butyl-type synthetic rubber in the said weed suppression concrete product.

  Furthermore, this invention can also be set as the structure by which the repellent is mixed in the said elastic foamed resin material in the said weed suppression concrete product.

  Furthermore, the present invention can adopt a configuration in which the elastic foamed resin material is provided with a hollow hole in the weed-suppressing concrete product.

  Further, the present invention is a method for producing the weed-suppressing concrete product, wherein an elastic foamed resin material is disposed at a position corresponding to a predetermined lower position from the upper end of the contact surface with the pavement material in the mold. The concrete product body and the elastic foamed resin material are integrally formed by pouring ready-mixed concrete into the mold and removing the mold after the ready-mixed concrete is solidified.

  Further, the present invention is a method for producing the weed-suppressing concrete product, wherein the concave groove for forming a concave groove at a position corresponding to a predetermined lower position from the upper end of the contact surface with the pavement material in the mold is provided. By providing a groove forming part, pouring the ready-mixed concrete into the mold, and fitting the elastic foam resin material into the concave groove in the concrete product body that can be removed after the ready-mixed concrete is solidified It is a completed configuration.

  According to the weed-suppressing concrete product according to the present invention, the concrete product and the pavement are elastically foamed by the elastic action of the elastic foamed resin material even when a gap is generated between the concrete product and the pavement. Since it is possible to maintain a close contact state through the resin material, it is possible to effectively prevent sediment accumulation and weed seeds from entering, and also prevent water from entering, and weeds. Can be prevented from growing.

In addition, according to the weed-suppressing concrete product according to the present invention, even when weeds grow from temporarily accumulated earth and sand, the roots extend downward due to the mixing of the repellent in the elastic foamed resin material. Since the weeds can be hindered by the width of the gap and can prevent the growth of weeds, the effect of suppressing weeds is greatly exhibited.
From the above-mentioned weed control effect, the scenery of roads and the like is well preserved and a good view is secured, which greatly contributes to securing safety in road use.

  In addition, according to the weed-suppressing concrete product according to the present invention, the concrete product main body and the elastic foam resin material are originally integrated, so that special construction for weed control is performed at the laying site. It is not necessary and contributes to workability and workability.

It is a whole perspective view which shows embodiment of the weed suppression concrete product concerning this invention. It is a whole perspective view which shows embodiment of the weed suppression concrete product concerning this invention. It is a whole perspective view which shows embodiment of the weed suppression concrete product concerning this invention. It is a whole perspective view which shows embodiment of the weed suppression concrete product concerning this invention. It is a whole perspective view which shows embodiment of the weed suppression concrete product concerning this invention. It is an expanded sectional view which shows the principal part of the weed suppression concrete product concerning this invention.

  The present invention is characterized in that in a concrete product laid so as to be in contact with pavement, an elastic foamed resin material is disposed at a predetermined lower position from the upper end of the contact surface with pavement. Hereinafter, embodiments of a weed-suppressing concrete product according to the present invention will be described with reference to the drawings.

  In addition, the weed suppression concrete product concerning this invention is not limited to the Example described below or the structure shown in figure, It can change suitably in the range which does not deviate from the meaning and structure of this invention.

  1 to 5 are general perspective views showing a weed-suppressing concrete product according to the present invention. FIG. 1 (a) is an embodiment of a concrete L-shaped block, and FIG. 1 (b) is a pedestrian boundary concrete block and a center. Fig. 2 is an embodiment of a side groove (U-shaped groove), Fig. 3 is an embodiment of a manhole, Fig. 4 is an embodiment of a box-shaped side groove, and Fig. 5 is an embodiment of an L-shaped retaining wall. , Shows.

  As shown in each drawing, a weed-suppressing concrete product 1 according to the present invention is a concrete product body 10 that is variously molded according to the purpose, and is slightly below a predetermined distance from the upper end of the contact surface 12 that contacts the pavement 20. The elastic foamed resin material 30 is arranged at a location located at the position.

  Regarding the shape of the concrete product main body 10, the illustrated boundary block, U-shaped groove, manhole, box-shaped side groove and L-type retaining wall are merely examples, and the concrete product main body 10 of any shape can be used depending on the product purpose. It can employ | adopt and is not specifically limited.

  After the concrete product main body 10 is laid on the site, the periphery is paved with a pavement material 20 such as asphalt. At that time, the concrete product main body 10 is predetermined from the upper end of the contact surface 12 with the pavement material 20. A concave groove 14 is provided at a position slightly below the distance. In addition, although there is no limitation in particular about the position which provides this ditch | groove 14, the location near the contact surface 12 upper end is desirable for the purpose of weed control.

  The elastic foamed resin material 30 is fitted and disposed in the concave groove 14. At this time, as shown in FIG. 6 (a), the shape of the concave groove 14 is increased as it goes to the back, for example, so that the elastic foamed resin material 30 is not easily detached from the concave groove 14 of the concrete product body 10. It can be considered to have a shape that becomes wider, or a substantially parallelogram shape in which grooves are formed obliquely toward the back as shown in FIG. 6B.

When the concrete product body 10 is manufactured by integral molding, the depth from the contact surface 12 of the elastic foamed resin material 30 is about 1/5 to 3/4 of the width of the elastic foamed resin material 30, and the elastic foamed resin material is used. When 30 is fitted, at least about 1/20 to 1/2 of the width of the elastic foamed resin material 30 protrudes from the contact surface 12 of the concrete product main body 10.
In addition, the size and shape of the concave groove 14 are set to be approximately the same size as the outer shape of the elastic foamed resin material 30 so that when the elastic foamed resin material 30 is fitted, the fitting side is in a completely intimate contact state. .

  The elastic foamed resin material 30 used in the present invention is desirably highly elastic with a high restoring force that can be restored even under a long-term load, such as butyl synthetic rubber. In addition, for the purpose of weed control of the present invention, it is preferable to mix a repellent material in advance in the elastic foamed resin material 30 (butyl-based synthetic rubber).

The size and shape of the elastic foamed resin material 30 are not particularly limited. For example, in the cross-sectional shape as shown in FIG. 6, the width is about 3 cm, the thickness is about 1.5 cm, It has become.
At this time, in the case where the shape of the concave groove 14 becomes a shape that becomes wider as it goes deeper as shown in FIG. 6A, the elastic foamed resin material 30 also has a vertical width on the fitting side. Will be a shape that spreads. Similarly, when the substantially parallelogram shape in which grooves are formed obliquely as it goes deeper as shown in FIG. 6B, the elastic foamed resin material 30 also has a substantially parallelogram shape. .

It can be considered that the elastic foamed resin material 30 has a configuration in which a hollow hole 34 is provided at the center thereof. At this time, the hollow hole 34 is provided in a state penetrating from one end to the other end of the long elastic foamed resin material 30.
By adopting such a configuration, it is possible to increase the high resilience / elasticity of the elastic foamed resin material 30.

About the weed suppression concrete product 1 concerning this invention comprised as mentioned above, when shape | molding the concrete product main body 10, the manufacturing method which integrally molds with a formwork in the state which has arrange | positioned the elastic foam resin material 30 from the first. Can be considered.
Hereinafter, the manufacturing method will be described.

  That is, in the method for manufacturing the weed-suppressing concrete product 1 according to the present invention, first, the elastic foam resin material 30 is arranged in a position located at a predetermined distance below the upper end of the contact surface 12 with the pavement material 20 in the formwork. Set up. Next, the ready-mixed concrete is poured into the mold in that state. The ready-mixed concrete product 1 according to the present invention is completed by waiting for the poured ready-mixed concrete to solidify and finally removing the formwork.

Moreover, about the weed suppression concrete product 1 concerning this invention, the concrete product main body 10 and the elastic foamed resin material 30 which provided the ditch | groove 14 are prepared previously, and the elastic foam resin material 30 is inserted in this ditch | groove 14 later. The manufacturing method completed by this is also considered.
Hereinafter, the manufacturing method will be described.

  That is, in the method for manufacturing the weed-suppressing concrete product 1 according to the present invention, first, the concave groove 14 is formed in the formwork at a position located below the upper end of the contact surface 12 with the pavement 20 by a predetermined distance. The groove forming portion is provided. Next, the ready-mixed concrete is poured into the mold. Wait for the poured concrete to solidify and remove the formwork. In the concrete product main body 10 thus formed, the elastic foamed resin material 30 is finally fitted into the formed concave groove 14, whereby the weed suppression concrete product 1 according to the present invention is completed.

  In the case of actually laying the weed-suppressing concrete product 1 according to the present invention completed as described above, the concrete product main body 10 and the elastic foamed resin material 30 have an integrated structure. It can be laid according to the same procedure as the conventional concrete product laying, without adding procedures and labor.

  In the weed-suppressing concrete product 1 according to the present invention immediately after laying, the elastic foamed resin material 30 is pressurized by the pavement material 20 so that the contact surface 32 with the elastic foamed resin material 30 pavement material 20 In this state, the pavement material 20 is kept in close contact with the contact surface 12 of the concrete product main body 10.

  After that, when the pavement material 20 is thinned over time and a gap is generated between the concrete product main body 10 and the pavement material 20, the elastic foamed resin material 30 takes advantage of its elastic force, and the contact surface 32 is made of the pavement material. It is restored to its original shape while being in close contact with 20. Thereby, even if a gap is generated between the concrete product main body 10 and the pavement material 20, there is no gap between the elastic foamed resin material 30 and the pavement material 20, and thus the gap is always closed. It is possible to hold

  The weed-suppressing concrete product 1 according to the present invention can be applied to any concrete product laid on a pavement, and the workability is as easy as a conventional product. I think that the industrial applicability is extremely high.

DESCRIPTION OF SYMBOLS 1 Weed suppression concrete product 10 Concrete product main body 12 Contact surface 14 Groove 20 Pavement material 30 Elastic foaming resin material 32 Contact surface 34 Hollow hole

Claims (6)

  In a concrete product laid so as to be in contact with the pavement material, by placing the elastic foam resin material at a predetermined lower position from the upper end of the contact surface with the pavement material in the concrete product main body, the concrete product main body and the elastic foam resin material Weed-suppressing concrete product characterized by the integration of   The weed-suppressing concrete product according to claim 1, wherein the elastic foamed resin material is a butyl synthetic rubber.   The weed-suppressing concrete product according to claim 1 or 2, wherein a repellent is mixed in the elastic foamed resin material in the weed-suppressing concrete product.   The weed-suppressing concrete product according to any one of claims 1 to 3, wherein the elastic foamed resin material has a hollow hole in the weed-suppressing concrete product.   It is a method for manufacturing the weed suppression concrete product of the said Claims 1-4, Comprising: An elastic foaming resin material is provided in the location applicable to a predetermined downward position from the contact surface upper end with the pavement material in a formwork. Weeds characterized in that the concrete product main body and the elastic foamed resin material are integrally formed by arranging, pouring the ready-mixed concrete into the formwork, and removing the formwork after the ready-mixed concrete solidifies in that state Manufacturing method of restrained concrete products.   It is a method for manufacturing the weed suppression concrete product of the said Claims 1-4, Comprising: A ditch | groove is formed in the location applicable to a predetermined downward position from the contact surface upper end with a pavement material in a formwork. An elastic foamed resin material is fitted into the groove in the concrete product body that is formed by removing the formwork after the ready-mixed concrete is poured into the formwork and the ready-mixed concrete is solidified in that state. A method for producing a weed-suppressing concrete product characterized in that it is completed by making it happen.

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