JP2007303232A - Corrosion preventing method for part near ground of structure like street illuminating light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrosion preventing method for a part near the ground of a street illuminating light or the like capable of flexibly coping with an existing post, by which good workability is obtained, uniform quality can be maintained, and safe construction can be conducted even in a place with people. <P>SOLUTION: In the corrosion preventing method for the part 4 near the ground of a structure like the street illuminating light whose lower part is embedded, the part 4 near the ground is exposed by removing a finishing concrete 3 around the part 4, a transparent sealing material 5 curable by the sunlight is applied around the exposed lower end part of the structure to seal a gap between a top end of a concrete foundation 2 and the structure. Then, a transparent photo-curable sheet 6 curable by the sunlight is glued to a lower part of the structure, and the transparent sealing material 5 curable by the sunlight is applied to an upper end part of the photo-curable sheet 6 for sealing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an anticorrosion method for a ground part such as a post such as a road illumination lamp.

  For example, a steel column 1 such as a road lamp is erected on the top of a foundation concrete 2 constructed in the ground as shown in FIG. The decorative concrete 3 is placed so as to surround

  However, local corrosion occurs at the site where the support 1 is in contact with the road surface (overground) due to aging, and this causes the steel plate thickness of the support 1 to decrease, which causes the support to tilt during collapse or strong winds. A situation has occurred.

  As for the cause of corrosion at the ground, a gap is formed between the decorative concrete 3 post-cast at the top of the foundation concrete 2 and the main body of the support column 1, and rainwater infiltrates from here to the top of the foundation concrete 2. This is thought to be due to water stagnation.

  Therefore, there are various conventional methods for improving the corrosion resistance of the corridor where the corrosion has occurred. For example, the thickness of the base of concrete or reinforcing steel plate is wound around the base of the column, or the reinforcing band is attached. There are a method of increasing, a method of coating a paint such as applying a paint such as a tar epoxy resin and a fluorine resin, and a method of winding an ultraviolet curable sheet.

  The prior art is generally performed by those skilled in the art, and is not related to a known literature invention.

  The above method is difficult to apply to existing struts, requires a long construction period, requires special equipment, is difficult to maintain uniform quality, and is a work for handling dangerous materials (such as paint) in crowded places. There are problems such as limited places where construction is possible.

  The object of the present invention is to eliminate the inconveniences of the conventional example, can flexibly respond to existing pillars, has good workability, can maintain uniform quality, and can be safely installed even in busy places. It is to provide an anticorrosion method for the border area.

  In order to achieve the above object, the invention according to claim 1 is a corrosion prevention method for a ground part of an embedded structure such as a road illumination lamp, and the like, and the concrete around the ground part is removed. Then, the ground part is exposed, and a transparent sealing material that is cured by sunlight is applied around the exposed lower end of the structure to seal it between the top edge of the concrete foundation, and then to the bottom of the structure. The gist is that a transparent photocuring sheet that is cured by light is bonded, and the upper end portion of the photocuring sheet is applied and sealed with a transparent sealing material that is cured by sunlight.

  According to the first aspect of the present invention, since a sheet using a photo-curing resin is bonded to the ground part, the quality is stable, the corrosive factor can be completely eliminated, and long-term durability can be expected. Variations due to the technician's technology can be eliminated, less work is required on site, and workability can be improved. And since the sealing material which hardens | cures with sunlight is apply | coated also to the upper-lower end part of a photocurable resin sheet, a corrosive factor can be excluded more reliably.

  Since the photocuring resin sheet and the sealing material are transparent, photocuring with sunlight and visual inspection over time are possible, and maintenance is facilitated.

  According to a second aspect of the present invention, the transparent photocured sheet that is cured by sunlight is a resin sheet such as vinyl ester that is a base film made of a reinforcing material such as glass fiber, glass flake, polyethylene film, polypropylene film, or PET film. The gist is to use in combination.

  According to this invention of Claim 2, durability improves by reinforcing a photocurable resin sheet.

  The gist of the invention described in claim 3 is that a transparent or translucent ultraviolet cut sheet is stuck as a protective sheet on the photocured sheet cured by sunlight.

  In the third aspect of the present invention, physical damage can be reduced and the weather resistance of the photo-curing resin sheet can be obtained by further attaching a protective sheet.

  As described above, the anticorrosion method for the ground part of a structure such as a road lamp according to the present invention is only to stick a sheet to the lower part of the pillar by attaching concrete on the ground part to a structure such as an existing pillar. Since the sheet is cured and bonded by sunlight, it is easy to work with, ensuring a uniform quality, shortening the construction period, and handling no hazardous materials compared to painting, etc. It can be installed safely in a certain place.

  The photo-curing resin sheet and the sealing material can secure the water tightness of the ground part, can reliably eliminate the corrosive factor, and can obtain durability over a long period of time.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal side view showing an embodiment of the anticorrosion method for a ground part of a structure such as a road lamp according to the present invention, and a case where the present invention is applied to a road lamp will be described as an example.

  As described above, the pillar 1 of the road lamp is erected with the foundation concrete 2, and the decorative concrete 3 is placed on the top end of the foundation concrete, and the lower part is embedded by the decorative concrete 3.

  A method of preventing corrosion of the portion of the ground portion 4 when the ground portion 4 of the support column 1 is eroded by rainwater or the like will be described with reference to the process diagram of FIG. First, the traffic regulation and safety measures of the road where the road lighting is installed are measured, the road surface is cleaned and surveyed, and the decorative concrete 3 is hung around the support 1 in a square shape. The vine depth is, for example, about 5 cm until reaching the foundation concrete 2.

  The upper surface of the foundation concrete 2 and the periphery of the support column 1 which are the ground part exposed by cutting and removing the decorative concrete 3 are ground and cleaned with a hand tool, and the support surface 1 and the concrete surface are processed with a dryer.

  Next, the transparent sealing material 5 which hardens | cures with sunlight is apply | coated to the standing corner | angular part which is the base of the support | pillar 1 erected on the foundation concrete 2. As a result, the space between the foundation concrete 2 and the lower end of the column 1 is sealed. As this sealing material 5, a putty containing an opaque tube, for example, a trade name “nax visible light putty 240” of Nippon Paint Co., Ltd. is used.

  Next, a transparent light-curing sheet 6 that is cured by sunlight is wound around and adhered to the lower periphery of the column 1. This light-curing sheet 6 is a resin sheet using polyethylene, polypropylene, vinyl ester or the like as a base sheet and coated with the same adhesive material as the sealing material. In order to increase the strength, Glass fiber, glass flake, polyethylene film, polypropylene film, PET film and the like are used in combination. Such a reinforcing material not only increases the strength of the light-curing sheet 6, but also reinforces the internal strut 1.

  The upper end portion of the wound light-curing sheet 6 is sealed with the sealing material 5 similar to the sealing material 5.

  Further, only the wrap portion at the end of winding of the photocuring sheet 6 is irradiated with a metal halide lamp and dried.

  A protective sheet 7 is wound on the photocured sheet 6. Thereby, it is possible to protect the light-curing sheet 6 that cannot be said to have sufficient weather resistance, to increase weather resistance, and to reduce physical damage. As the protective sheet 7, for example, a window film of trade name “ATTSU-9” of Nippon Paint Industrial Coating Co., Ltd. can be used as it is transparent or translucent and cuts about 50% of sunlight.

  By using a solar-curing resin sealing material or sheet as described above, it is possible to stabilize the quality and to expect long-term durability, especially by using a thick and constant sheet. By using materials, it is possible to investigate the condition of the groundwork at any time, predicting danger, facilitating maintenance, and shortening the work period by adopting photocuring technology during construction.

  And the ground part of the support | pillar 1 is completely sealed with the sealing material 5 and the photocuring sheet 6, and since these sealing material 5 and the photocuring sheet 6 receive sunlight and cure | harden naturally, they are solvent-free. Construction safety can be ensured, and in terms of technology and construction schedule, the construction is better than the construction method by painting.

  Furthermore, since the processing from the installation part of the support column 1 to a depth of about 5 cm is performed with a photo-curing resin, it can sufficiently cope with past corrosion examples, can completely eliminate corrosive factors, and has long-term durability. can get.

  Finally, the non-shrinking mortar is filled in the part where the decorative concrete 3 is held and cured. Since the sealing material 5 and the light-curing sheet 6 are transparent, the subsequent inspection can be easily observed.

  In addition, this invention is not limited to the said support | pillar, It can implement also in a planar wall or a box-shaped thing, and a material is not limited to steel, It can apply also to concrete.

It is a vertical front view which shows embodiment of the anticorrosion construction method of the underground part of structures, such as a road illumination light of this invention. It is process drawing of the anticorrosion construction method of the underground part of structures, such as a road lighting. It is a front view of the road illumination light with which this invention is implemented.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Foundation concrete 3 Decorative concrete 4 Ground part 5 Sealing material 6 Photocuring sheet 7 Protection sheet

Claims (3)

  It is a corrosion prevention method for the ground part of a structure where the lower part of a road lighting etc. is buried, and the ground part is exposed through the concrete around the ground part, and the periphery of the exposed lower end of the structure Apply a transparent sealing material that is cured by sunlight to seal between the top of the concrete foundation, and then adhere a transparent light curing sheet that is cured by sunlight to the bottom of the structure, this light curing sheet An anti-corrosion method for the ground part of a structure such as a road illumination lamp, wherein a transparent sealing material that hardens with sunlight is applied to the upper end of the door.   The transparent photocured sheet cured by sunlight uses a reinforcing material such as glass fiber, glass flake, polyethylene film, polypropylene film, and PET film together with a resin sheet such as vinyl ester as a base film. Anti-corrosion method for the underground part of structures such as road lights.   The anticorrosion method of the subsurface part of structures, such as a road illuminating lamp of Claim 1 or Claim 2, which pastes a transparent or semi-transparent ultraviolet cut sheet as a protective sheet on the light-curing sheet cured with sunlight. .

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