JP2002339575A - Tape for repairing crack of concrete pole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tape for repair surely filling a crack while ensuring a repair finished surface having excellent appearance. SOLUTION: A long groove-shaped transparent region 11 is formed at the central site of a tape body 3 formed in fixed length, a U-shaped surface formed around the transparent region 11 is bonded with a concrete pole 15, in which the crack 17 is generated, as an adhesive surface 5, the transparent region 11 is made to function as forms for fillers 23, and the crack is filled while an injection state is monitored from the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a tape for repairing cracks in concrete columns.

[0002]

2. Description of the Related Art In general, concrete pillars are made of a formwork.

[0003]

[0003] Concrete pillars made of a formwork sometimes undergo vertical cracks along the seams of the formwork during the manufacturing process.

[0004] Cracks are repaired by injecting a filler, where cracks are caused by adverse effects such as accelerating corrosion of internal reinforcing bars and the like due to water intrusion.

[0005] In this case, cracks range from shallow to deep, and the filling efficiency depends on the fluidity of the filler. Especially when the filler is deep, if the fluidity of the filler is low, it may not be able to reliably reach all corners, so that the fluidity is preferably high. On the other hand, if the flowability of the filler is high, there are problems such as the overflow of the cracked upper surface at the time of the injection and the flow of the filler, and the appearance of the repaired upper surface after completion of the filling is not obtained.

Accordingly, an object of the present invention is to provide a tape for repairing cracks in a concrete column, which enables reliable filling and obtains a good-looking repaired top surface.

[0007]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, one of the lengths of a tape body formed along a longitudinal direction at a central portion of a tape body formed to have a predetermined length. While forming a thin, long, groove-shaped transparent region that is continuous from the tape edge to the other tape edge, a U-shaped surface formed around the transparent region is bonded to the adhesive surface of the tape body. It is characterized by having.

Thus, the bonding surface of the tape body is bonded along the crack. At the time of this bonding, the cracked portion is desired in the long groove-shaped transparent region, and a slight gap is formed along the transparent region. Therefore, the filler is injected from above through a tube or the like. In this case, the state at the time of injection can be monitored from the outside, and even if a material having a high fluidity is used, the mold functions as a mold that does not flow out to the outside, so that the crack can be reliably filled. After the filling is completed, the tape main body is removed after the curing of the filler, and a good-looking repaired upper surface can be obtained.

According to the second aspect of the present invention, the central portion is opened in a band shape, is formed in a U shape when viewed from the front, and one surface formed in the U shape is an adhesive surface. A base tape continuous in the longitudinal direction to which a butyl rubber-based adhesive is applied, and a transparent soft PVC tape that is the same in width and length as the base tape and that is overlapped and bonded to the opposite surface serving as an adhesive surface. Characterized by comprising:

[0010] This makes it possible to easily produce a repair tape having a transparent region which becomes a transparent window in which the state of injection can be monitored by superimposing and bonding the base tape and the transparent soft vinyl chloride tape. In addition, the surface is rough like a concrete pillar by butyl rubber adhesive, and moreover,
Even under bad conditions such as a curved surface shape, it is possible to securely adhere.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to FIGS.

FIG. 1 is a front view of the repair tape 1. The tape body 3 of the repair tape 1 is composed of a base tape 7 having an adhesive surface 5 and a transparent soft material as shown in FIGS. And a vinyl chloride tape 9.

The base tape 7 is formed in a U-shape that is vertically long when viewed from the front by opening in a belt shape from the upper edge of the tape toward the lower edge of the tape. One surface formed in a U-shape is the bonding surface 5 as described above,
The bonding surface 5 is formed by applying a butyl rubber-based adhesive.

The transparent soft vinyl chloride tape 9 is formed to have the same width and length as the base tape 7 and is overlapped and bonded to the surface opposite to the bonding surface 5 by bonding means. In this case, the bonding between the soft vinyl chloride tape 9 and the base tape 7 is not limited to the bonding means, and other bonding means may be used.

Thus, as shown in FIG. 1, the transparent soft vinyl chloride tape 9 forms a long groove-shaped transparent region 11 formed in the center portion of the tape main body 3 along the longitudinal direction. As shown in the figure, the inside of the long groove 13 which becomes the transparent area 11 functions as a form space in which the upper portion is opened when the filler is filled when it is bonded to the concrete column 15.

The repair tape 1 constructed as described above is
The adhesive surface 5 is formed to have a predetermined length and is managed so that the adhesive surface 5 is not stained by the release paper 16.

Therefore, at the time of use, as shown in FIG. 4, the upper end side is cut to a required length corresponding to the crack 17 of the concrete column 15, and the release paper 16 is peeled off and adhered along the crack 17. At the time of this bonding, the surfaces are rough like the concrete pillars 15 and even if they have a curved surface shape, they are securely bonded to each other. At the same time, the portion of the crack 17 is desired in the long groove-shaped transparent region 11 and the transparent region 11
Since a slight gap is formed along the line, the tip of the supply tube 21 extended from the filling container 19 is fully inserted, and the filler 23 is injected. At this time, the filler 23 may be a cement type or a resin type.

On the other hand, the state at the time of injection can be monitored from the outside, and even if a filler 23 having a high fluidity is used, the long groove-shaped transparent region 11 functions as a mold and does not flow down to the outside. Will be filled. After filling is completed, wait for curing and remove the repair tape 1
As shown in FIG. 5, a good-looking repaired upper surface 25 slightly raised on the surface of the concrete pillar 15 can be obtained.

[0019]

As described above, according to the first aspect of the present invention, the filler can be reliably filled into the cracks by the repair tape, and the repaired top surface with good appearance can be obtained. Become like

Further, according to the second aspect of the present invention, a repair tape having a transparent region in which an injection state can be monitored can be easily manufactured. Moreover, the butyl rubber-based pressure-sensitive adhesive makes it possible to reliably adhere even to a place having a rough surface such as a concrete column and a curved surface with poor conditions.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a repair tape according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a schematic explanatory view in which a repair tape is disassembled.

FIG. 4 is an explanatory view showing a repair work for cracks.

FIG. 5 is an explanatory view showing a repaired upper surface after completion of the repair.

[Explanation of symbols]

 3 Tape main body 5 Adhesive surface 11 Transparent area 15 Concrete pillar 17 Crack 23 Filler

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takao Handa 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo F-term in Nippon Telegraph and Telephone Corporation 2E176 AA04 BB12

Claims (2)

[Claims] 1. A thin, long, groove-shaped transparent part that is continuous from one tape edge to the other tape edge along a longitudinal direction at a central portion of a tape body formed to a predetermined length. A tape for repairing cracks in a concrete column, wherein a U-shaped surface formed around the transparent region is formed as an adhesive surface of the tape body while forming the region. 2. A central portion is opened in a strip shape and viewed from the front,
A base tape formed in a U-shape and having a butyl rubber-based pressure-sensitive adhesive applied so that one surface formed in a U-shape is an adhesive surface, and a base tape having a width and a length that are continuous with the base tape. A tape for repairing cracks in concrete columns, comprising a transparent soft vinyl chloride tape superimposed and bonded to the same surface opposite to the adhesive surface.