JPH0528288Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an exterior wall repair structure, and mainly relates to an exterior wall repair structure for preventing peeling of a tile wall constructed on the surface of a concrete frame.

(Prior art) Tiles installed on the surface of a concrete structure may peel off not only when the tile itself peels off, but also when the mortar layer applied directly to the concrete structure peels off from the concrete structure.
The tiles may lift up together with the mortar layer, which may lead to delamination.

There have been various methods for repairing peeling of the mortar layer applied to a concrete structure.
A typical method is to inject epoxy resin into the peeled area. This method has the problem that if water accumulates in the peeled area or mold grows in the peeled area, the adhesive strength of the resin decreases, making complete repair impossible.

In addition, a fully threaded anchor pin is coated with epoxy resin and driven in, and after temporarily repairing the mortar layer with the anchor pin, a resin injection anchor separate from the anchor pin is driven in to connect the concrete frame and mortar layer. A combination method in which resin is injected between the two is also known. In this method, the hole diameter for driving the fully threaded anchor pin is 5~
Due to the small diameter of 6 mm and the fact that work is often done at heights, the removal of chips adhering to the inner wall of the hole tends to be incomplete, so even if this method is used as a temporary repair, the adhesion is unstable. There is a part.

Furthermore, injecting resin through the hole into which the resin injection anchor has been driven cannot be done until the resin attached to the fully threaded anchor pin has hardened, so normally it is not possible to inject resin into the hole where the resin injection anchor has been driven. It is necessary to cure the resin for about one day before injecting the resin, which causes problems in that the repair work takes a long time and increases costs.

Furthermore, as an alternative to the above two methods, a method is known in which a resin injection method is used in combination with a metal expansion anchor. In this case, if the metal expansion anchor used for temporary repair is driven in by impact, it is necessary that the impact force does not affect the lifting or peeling of the tile or mortar layer, and that the repair work does not damage the design of the tile surface. However, if the temporary repair work can be done mechanically, the concrete frame and tile wall surface can be integrated, so if water accumulates in the peeled area or mold grows, the adhesive strength of the resin will deteriorate. Even if a decline is expected, the repair will be complete.

(Problem to be Solved by the Invention) The problem to be solved by the invention is to provide an exterior wall repair structure that uses metal expansion anchors to temporarily repair peeled portions of the concrete frame and mortar layer.

(Means for solving the problem) The means for solving the problem in this invention are as follows:
It is formed into a pipe shape, has a flange at its base end, and is provided with a pair of protrusions protruding inward near the distal end, and is positioned from the distal end at a position 90° out of phase with the protrusions. An anchor body is provided with a notch along the axial direction, and the anchor body is formed into a pipe shape and has a length that the proximal end protrudes from the anchor body when inserted into the anchor body and the distal end abuts the overhanging protrusion. and a middle pin having a flange of the anchor body, which fixes the tile wall surface through the transparent pine when the anchor body is driven into the joint part of the tile from above the transparent pine laminated on the tile wall surface. It is characterized by this.

(Function) A hole is made in the joint part 13 of the tile 12 with a drill 14, and a transparent mat 15 is laminated thereon. Next, a hole is made from above the transparent mat 15, and the anchor body 1 is inserted into this hole.

Next, the middle pin 6 is inserted into the anchor body 1, and the middle pin 6 is hammered until its base end is at the same height as the flange 2, and the expanded part 1a is attached to the concrete frame 10.
The anchor body 1 is installed and the tiles 12 are mechanically fixed to the concrete frame 10.

(Example) Figures 1 and 2 show an anchor used for repairing an exterior wall. 1 is an anchor body formed in a pipe shape, which is made by processing a plate material into a pipe shape, and has a flange 2 formed at the base end and protruding inward near the end of the distal end. A pair of overhanging protrusions 3 are provided. Reference numeral 4 denotes a small hole bored at a position closer to the flange 2 than the overhanging projection 3 (closer to the center of the anchor body 1) and 90 degrees out of phase with respect to the overhanging projection 3.

Reference numeral 5 denotes a notch formed from the small hole 4 toward the tip of the anchor body 1. Note that when the anchor body 1 is formed into a pipe shape from a plate material, the small hole 4 is provided at a joint part of the plate material, so the joint part becomes a cut. As a result, the anchor body 1 is formed into an expanded portion 1a from the small hole 4 to the distal end.

Reference numeral 6 denotes a pipe-shaped middle pin, which has an outer diameter that can be inserted into the anchor body 1, and
It is formed to have approximately the same length as the anchor body 1.
Therefore, when the middle pin 6 is inserted into the anchor body 1 and the distal end comes into contact with the overhanging protrusion 3, the base end protrudes from the base end of the anchor body 1.

Next, a specific example of repairing an outer wall using the present invention will be explained with reference to FIG. 10 is a concrete frame, 11 is a mortar layer, 12 is a tile, and 13 is a joint.

First, the entire surface of the tile is cleaned, and the joint area 13 where the tile 12 has peeled off from the concrete frame 10 is cleaned.
(Fig. 3A). Then,
A primer is applied to the entire surface of the tile 12, and a transparent mat 15 containing glass fiber is further laminated thereon (FIG. 3B).

The hole drilled in the joint part 13 can be confirmed from above the transparent pine 15, so insert the anchor body 1 into the already drilled hole and attach the transparent pine 1 by the collar part 2.
5 is fixed, and then a middle pin 6 is inserted into the anchor body 1. Then, the middle pin 6 is connected so that its base end is at the flange 2.
When the anchor body 1 is hammered to the same height, the overhanging protrusion 3 is pushed outward by the tip of the middle pin 6, and the expanded part 1a bites into the concrete frame 10, and the anchor body 1 is installed (No. Figure 3 C, D).

Next, a transparent paint 16 with excellent weather resistance is applied to the surface of the transparent mat 15, and after the paint dries, a hole 17 for water or air release is made in the transparent paint 16 at a position corresponding to the anchor pin. Figure 3E).

After the anchor is constructed as described above, a resin injection anchor (not shown) is driven around the anchor, and an epoxy resin is injected from the resin injection anchor into the separated portion between the concrete frame and the mortar layer. When the injected resin hardens, it is possible to prevent tiles or mortar layers from peeling off and floating from the concrete structure.

(Effects of the invention) The present invention mechanically integrates the mortar layer and the concrete structure before driving the anchors for resin injection. Since it is fixed by the flange provided at the base end of the installed anchor body, the tile or mortar layer is mechanically fixed to the concrete frame through the transparent mat, and the resin applied afterwards is fixed. The complete repair will be done by injection construction.

In addition, in this invention, the middle pin driven into the anchor body is made of pipe material, so water or air accumulated in the peeled part can be discharged to the outside.
Anchors for resin injection, which will be installed later, can be immediately driven in, thereby shortening the period of repair work.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the whole anchor used for repairing an outer wall, FIG. 2 is a cross-sectional view of the same, and FIG. 3 is an explanatory view of the repair work. 1... Anchor body, 1a... Extension part, 2...
Flange, 3... Overhanging projection, 4... Small hole, 5... Notch, 6... Middle pin, 10... Concrete frame,
11... Mortar layer, 12... Tile, 13...
Joint part, 14...Drill, 15...Transparent pine,
16...transparent paint, 17...hole.

Claims (1)

[Claims for Utility Model Registration] A pipe-shaped product having a flange at its base end and a pair of protrusions protruding inward near its distal end, and at a 90° angle with the protrusions. The anchor body has a notch extending in the axial direction from the distal end at positions shifted from each other, and the anchor body is formed into a pipe shape, and when inserted into the anchor body and the distal end comes into contact with the overhanging protrusion, the proximal end and a middle pin having a length protruding from the anchor body, and when the anchor body is driven into the joint part of the tile from above the transparent pine laminated on the tile wall surface, the flange of the anchor body An exterior wall repair structure characterized by fixing a tile wall surface through a tile wall.