JPH05195634A - Exterior wall repairing method for building - Google Patents

Abstract

PURPOSE:To nimbly and efficiently repair the mortar outer wall (old finishing material) of a building. CONSTITUTION:A unit backing material A formed with many through holes 19 is integrally stuck to an intersection (x) of unit grids marked on the surface of the old finishing material M of a building or its cut and unified concrete skeleton by an adhesive B1 in the sprinkled distribution state. An anchor pin driving hole 25 is bored to the depth reaching the inside of the concrete skeleton C from the center of the unit backing material A, and the unit backing material A is unfloatably pressed by the large-diameter head section 13 of an anchor pin P driven into the driving hole 25. A new finishing material T is finally overcoated to wholly bury and cover the unit backing material. A and the large-diameter head section 13 of the anchor pin P.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repairing an outer wall of a building, and more particularly to an improvement of a method of repairing the concrete wall of an existing building to prevent the outer wall of the mortar from peeling off or rising.

[0002]

2. Description of the Related Art An outer wall of a mortar that has been wet-processed, such as tiled or brickted (hereinafter abbreviated as old finish material).
However, as a method for repairing the outer wall that prevents the concrete structure of the building from peeling off or rising over time, a method commonly known as a supernet method is known.

[0003] In this construction method, a floating or damaged portion of a tile or the like in an old finishing material is discriminated by tapping sound and visual inspection, and the portion is scraped off and cleaned, and a dedicated primer of 3 times dilution liquid type is used for the base. The backfill is balanced by sequentially applying a dedicated filler composed of a powder and a kneaded mixture of the mixture.

Then, a special net is attached to the entire body, and the anchor pin is driven into the anchor pin driving hole formed in the concrete frame to press and fix the net, and finally the net is fixed. The special filler is overcoated so that the nets and anchor pins can be embedded and covered, and a new finishing material is applied after curing.

In this case, as the above-mentioned special net, as seen in Japanese Patent Publication No. 60-5750, a reticulated non-woven fabric composed of a filament yarn whose surface is coated with an alkali-resistant thermoplastic resin adhesive is used. It is designed to prevent the occurrence of cracks.

[0006]

However, in such a known construction method, the aged old finishing material including floating and damaged parts such as tiles are necessarily removed by scrubbing and cleaning. No reinforcement is considered at all in order to utilize the old finishing material as a recycled base material for the new finishing material.

Moreover, since the scroll-shaped net is cut and attached to the entire wall surface, it is inconvenient to handle, and it can be done by one person without danger and firmly. It is impossible to carry out the sticking work, and it requires a great deal of labor and time, which is a bottleneck for improving workability.

[0008]

DISCLOSURE OF THE INVENTION The present invention intends to improve such a problem, and therefore, a unit base material having a large number of through holes in the structure and an expansion split groove from the tip end are provided. Prepare the provided hollow anchor pins, and then use the adhesive to intersperse the unit grids that have been marked on the surface of the unit finish material, which is the old finish material or the scraped and balanced concrete skeleton. Then, an anchor pin driving hole with a depth that reaches the inside of the concrete skeleton from the center of the unit base material is drilled, and the large diameter head of the anchor pin driven into the driving hole. Part, the unit base material is pressed so that it cannot rise, and finally the new finish material is applied to the surface of the old finish material or the concrete skeleton, and the large-sized head portion of the unit base material or anchor pin is ground. As covering state embedding, the first feature to be overcoated,

Similarly, a unit base material having a large number of through-holes and a hollow anchor pin provided with a split groove for expanding from the tip end are prepared, and the unit base material is first finished with an old finish. Material or its scraped-off and proportioned concrete grates marked on the surface of the unit grid in a scattered distribution with an adhesive to integrate them, and then from the center of the unit base material to the inside of the concrete structure An anchor pin driving hole with a depth that reaches the hole is drilled, and the large-diameter head portion of the anchor pin driven into the driving hole causes
By pressing the above unit base material so that it cannot rise, and then injecting the adhesive into the hollow inside of the anchor pin,
The adhesive is allowed to flow out from the split groove to the periphery of the anchor pin and to the boundary surface between the old finishing material and the concrete frame, and finally, the new finishing material is added to the surface of the old finishing material or the concrete frame as a unit. The second feature is to coat the base material and the anchor pin so that the large-diameter head portion of the large-diameter head is buried.

[0010]

According to the structure of the first aspect of the invention, the unit base material is interspersed with the adhesive to the intersection of the unit grids marked on the surface of the old finish material or the concrete body of the concrete body that has been scraped off and balanced. Unlike conventional nets, even a single operator can attach the unit base material extremely easily and firmly because it is attached to the unit, which is extremely easy to handle. It is also convenient.

Further, since a large number of through holes are formed in the unit base material, the adhesive to be attached to the surface of the old finish material or the concrete skeleton should be placed in the through holes of the unit base material. Since the new finishing material that wraps around and then overcoats also penetrates into the through holes of the unit base material, the old finish material and concrete frame and the new finish material are extremely stable and stable through the unit base material. It will be well integrated and integrated.

Moreover, an anchor pin is also driven into the center of the unit base material, and the large-diameter head portion of the anchor pin allows the unit base material to be fixed by pressing so as not to float up. Even if an anchor pin is used as a finishing material, the result is that it will be firmly connected to the old finishing material or concrete skeleton, and the new finishing material will be completely prevented from peeling or rising. In other words, even old aged finishing materials can be effectively reinforced by using this as a recycled substrate for construction of new finishing materials.

Further, according to the structure of the second invention, in addition to the effect of the first invention as described above,
While effectively utilizing the hollow anchor pin, the spillover effect of the adhesive injected into the interior of the hollow anchor pin makes it possible to further strengthen the tie-up effect of the new finishing material on the concrete skeleton, and the old finishing material. As a result, even if it is used as a recycled base material for a new finishing material, the result can be enhanced more effectively.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. FIG. 1 and FIG.
Shows the repair work process, and FIGS. 11 to 14 show the anchor pin (P) and the unit base material (A) used for the work, respectively. First, the anchor pin (P) is made of stainless steel or other rust. Anchor body (1
1) and a special steel ingot plug (12) that is inserted into the hollow portion so as not to fall off.

The anchor body (11) has a thickness of, for example, about 6 mm and a concrete skeleton (from the surface of the old finish material (M)) by plastic working of the above-mentioned metal material wound in a coil shape, especially cold forging. It is made in a hollow cylindrical shape with a length that can reach a certain depth of C). It is needless to say that the length of the anchor body (11) is actually sized as various types according to the change of the thickness (t1) of the old finishing material (M) and selectively used.

(13) Simultaneously with the cold forging, at the same time, a large diameter is continuously and integrally projected from the base end position in the longitudinal direction on the trunk surface of the anchor body (11) to a thickness of, for example, about 9 mm. It is a head part, and the back surface of the head part crosses the trunk surface of the anchor body (11) at a substantially right angle.
As 4), a unit base material (A) described later can be pressed so as not to rise. Further, the large-diameter head portion (13) is open in communication with the hollow inside of the anchor body (11) so that an adhesive injection nozzle (grease gun) (N) described later can be smoothly received. It has become.

The hollow inside of the anchor body (11) is perforated by a drilling process following the cold forging described above so as to have a stepped shape with a small diameter near the tip, and the stepped portion (1
The plug (12) is locked to 5) to prevent the anchor body (11) from slipping out toward the front end.
(16) is a stopper ring that prevents the plug (12) from slipping out in the opposite base end direction. The stopper body (11) is so-called kneaded after the perforation process, so that the plug (12) is inwardly moved from the midway position of the body surface. It is formed overhanging. Therefore, the stopper ring (16) also serves as a reinforcing rib of the anchor body (11) itself.

Reference numeral (17) is a split groove that is provided in parallel from the tip of the anchor body (11) along the longitudinal direction of the body surface by subsequent milling of the anchor body (11). While promoting the spreading action from
The outflow action of the adhesive (B2) from the inside of the anchor body (11) described later toward the periphery is also performed. From that meaning, the split groove (1
7) is as long as possible as a constant working length (d) that necessarily faces the boundary surface (floating margin part) (G) between the old finish material (M) and its concrete skeleton (C). The openings are arranged.

In that case, as is clear from FIGS.
As a state of being restrained on the back surface of the large-diameter head portion (13), an adhesive backflow prevention packing (18) made of butyl rubber or other pseudo clay material that is plastically deformable is formed on the body surface of the anchor body (11). It is preferable to set it by fitting. The reason will be described later.

Next, FIG. 14 shows an optimum unit base material (A) used for carrying out the present invention. It consists, for example, of a disk-shaped punching metal with dimensions of diameter-about 25-30 mm and thickness-about 0.8 mm, whose numerous evenly distributed through-holes (19) are described below. It acts to receive the adhesive (B1) and the new finishing material (T), and by increasing the surface area thereof, it is firmly bound to them. An anchor pin insertion hole (20) is formed at the center of the unit base material (A), and the anchor body (11) of the anchor pin (P) can be freely inserted through the anchor pin insertion hole.

However, the outline shape of the unitary base material (A) may be set to be rectangular as long as it is about the above size, and a large number of through holes (19) and anchor pin insertion holes ( If 20) is provided, the punching metal may be replaced by a wire mesh such as a metal lath or a wire lath in which strands intersect with each other. Further, as the material thereof, it may be possible to mold from various fiber reinforced plastic materials instead of the above metal materials.

Particularly, as the unit base material (A), FIGS.
7 suggests that the strands stand up in a non-perpendicular (α) crossing state with respect to the surface of the old finishing material (M) and the surface of the concrete frame (C) that has been scraped and balanced. If you use the rib lath of
Although it is easy to receive 1) and the new finish material (T) from the through hole (19), it is difficult to get them out. Therefore, the binding force between these and the unit base material (A) should be further increased. You can

Moreover, in addition to the large number of through holes (19) scatteredly distributed, the surface of the unit base material (A) is, as is apparent from FIG. 18, a strong filament resistant to alkali and water. If the reticulated non-woven fabric (21) made of threads is stuck and integrated, or if the surface is also roughened by plastic working or flocking, the above adhesive (B1) or new finishing material (T) and unit base material ( It can be said that it is extremely beneficial in that it can further strengthen the binding force with A).

(E) is a unit base material for corners,
If this is made from the same material as the intermediate unit base material (A) as shown in FIGS. 19 and 20 and has a V-shaped cross section, one long side thereof is used as the mounting seat (22), and the remaining short other Using the side edges as ruler pieces (23), the top coat work of the new finishing material (T) on the corners of the building can be performed smoothly.
The top coating thickness (t2) can be kept uniform, which is very effective.

In the present invention, when repairing the outer wall of the building, the anchor pin (P) and the unit base material (A) as described above are used, and the work is performed according to the following process sequence.

That is, FIGS. 1 and 2 show the standard unit grids marked on the surface of the old finish material (M), but a certain range around the intersection (x) is now the old finish. If it is assumed that the tile (24) in the material (M) is a floating / damaged part, the unit base material (A) is previously wet-cured with an epoxy resin or polymer cement for the floating part (x). An adhesive (B1) such as a slurry is attached and integrated as shown in FIG. By doing so, the adhesive (B1) wraps around not only on the back surface of the unit base material (A) but also in the many through holes (19), so that it is strongly fixed to the old finishing material (M). Will result.

Therefore, as shown in FIG. 4, a drilling tool (D) such as a drill is inserted through the anchor pin insertion hole (20) opened at the center of the unit base material (A) to prepare the old finish material (M). ), An anchor pin driving hole (25) having a constant depth reaching the inside of the concrete skeleton (C) is formed as shown in FIG.

Then, as shown in FIG. 6, the anchor body (11) of the anchor pin (P) is driven into the driving hole (25), and the plug () inserted and set in the anchor body (11) is inserted. 12) is tapped with a tapping tool (F) such as a driving rod as shown in FIG. At this time, a packing (18) for preventing the backflow of the adhesive in advance should be inserted into the body surface of the anchor body (11) and set.
preferable.

Then, the anchor pin (P) is gradually expanded and deformed from the tip of the anchor body (11),
It will stick to the concrete skeleton (C) irremovably, and by the large diameter head portion (13) at the base end position as well,
The unit base material (A) is pressed and fixed as shown in FIG. 8 without the risk of floating. In the process, as shown in FIG. 13, the packing (18) is also plastically deformed into a crushed state, and the large head portion (13) of the anchor body (11) and the anchor pin insertion hole of the unit base material (A). This results in a complete seal of the mutual gap with (20).

Then, as shown in FIG. 9, a nozzle (grease gun) for injecting an adhesive into the large-diameter head portion (13) of the anchor body (11) exposed from the unit base material (A).
(N) is inserted directly or indirectly through an adapter (not shown), from which a wet-curing type epoxy resin or an adhesive (B
2) is injected and filled into the hollow inside of the anchor body (11) under the pressurized condition.

Then, the adhesive (B2) passes through the split groove (17) opening in the body surface of the anchor body (11) to the mutual gap (S) between the body surface and the driving hole (25). As it flows out, it receives the above-mentioned pressure and further spreads and permeates into the boundary surface (G) between the old finishing material (M) and the concrete skeleton (C). As a result, the old finishing material (M) anchors. Since the pin (P) and the adhesive (B2) are used as a medium, they are strongly connected to the concrete skeleton (C) without fear of floating or peeling and are reinforced as a reclaimed base for construction of the new finishing material (T). is there.

In that case, the adhesive (B
2) is the body of the anchor body (11) and the driving hole (2
5) An attempt is made to flow back through the mutual gap (S) with the unit base material (A) toward the outside, but the head of the unit base material (A) and the anchor body (11) that reach the outlet thereof have a large diameter head. The mutual clearance with the part (13) is the advance packing (18).
Since it is completely sealed by the adhesive (B
There is no possibility of inadvertent backflow in 2). From that meaning, it is explained that it is preferable to use the anchor pin (P) with the packing (18) shown in FIGS.

Then, finally, the nozzle (N) is pulled out from the anchor body (11), and the unit base material (A) and the anchor pin (P) are buried in the surface of the old finishing material (M) in a covered state. , The adhesive (B1) as shown in FIG.
A new finish material (T) such as epoxy mortar slurry cement which is compatible with (B2) is overcoated to a constant thickness (t2). Of course, a surface decorative material such as tile or brick may be applied to the new finish material (T).

First, the unit base material (A) was replaced with the adhesive (B).
According to 1), it was explained that it was directly attached to the surface of the old finishing material (M) and integrated, but as shown in FIG. 21, a separate alkali-resistant / water-resistant fiber having substantially the same size as the unit base material (A). A fiber sheet (26) having a three-dimensional network structure consisting of is prepared, and is interposed between the unit base material (A) and the old finishing material (M), and the adhesive agent (B1) is in an uncured state. In the above, the fiber surface may be attached and integrated in a fluffy state from the surface of the adhesive (B1).

Then, the unit base material (A) is more strongly bound to the old finishing material (M) by using the fiber sheet (26) as an anchor, so that the new finishing material (T) is extremely effective. It will be possible to form a playback base. The three-dimensional network structure of the fibers has a sufficient impregnating action of the adhesive (B1),
It is very useful for relaxing the peeling stress in the unit base material (A).

Although the adhesive (B2) is injected into the hollow inside of the anchor pin (P), the old finish material (M) and the new finish material (T) are lifted up. If there is no fear, the adhesive injection step of FIGS. 9 and 10 is omitted, and the unit finish material (A) and the anchor pin (P) are covered with a new finishing material (T ) May only be applied as the top coat.

Further, in the illustrated example, the old finishing material (M) is not scraped off and is regenerated as the base of the new finishing material (T). However, the old finishing material (M) is regenerated. It is also possible to scrape off) and apply the new finishing material (T) to the surface of the concrete skeleton (C) in the same manner as above.

[0038]

As described above, according to the present invention, as a repairing method for the outer wall of the mortar, the unit base material (A) having a large number of through holes (19) and the split groove (17) for expanding from the tip end portion. )
Prepare a hollow anchor pin (P) to which is added, and mark the unit base material (A) on the surface of the old finishing material (M) or its concrete body (C) To the intersection (x) of the unit grids, the adhesive (B1) is applied in a scattered distribution so as to be integrated, and then the depth from the center of the unit base material (A) to the inside of the concrete skeleton (C) is reached. An anchor pin driving hole (25) is drilled, and the large diameter head portion (13) of the anchor pin (P) driven into the driving hole (25) lifts the unit base material (A). Insufficiently hold down, and finally, a new finishing material (T) is applied to the surface of the old finishing material (M) or its concrete skeleton (C), and the large-sized head portion of the unit base material (A) or anchor pin (P). (13)
Since it is a top coat as a covering state that embeds, it is not necessary to stick a special net like the prior art mentioned at the beginning to the entire wall surface, and the small flat unit base material (A) is light While handling and using it, it can be extremely easily repaired even by a single worker by attaching it to the intersections (floats) (x) of the unit grid in a scattered distribution state and integrating them. , Its work efficiency and safety are remarkably excellent.

Since a large number of through holes (19) are distributed in the unit base material (A), the unit base material (A) is attached to the surface of the old finishing material (M) or the concrete skeleton (C). The adhesive (B1) that should be applied permeates not only the back surface of the unit base material (A) but also the through holes (19), and the new finishing material (T) to be subsequently overcoated is also used as the unit base material. As a result of entering into the through hole (19) of the material (A), the old finish material (M) or its concrete skeleton (C) and the new finish material (T) are unitary base materials (A).
By using as a medium, it is firmly and stably bound and integrated.

Moreover, the anchor pin (P) is also driven into the concrete skeleton (C) through the anchor pin insertion hole (20) opening at the center of the unit base material (A), and the anchor pin (P) is also inserted. Due to the large head section (13) of
Since the unit base material (A) is fixed so as not to float up, the new finishing material (T) is strongly connected to the concrete skeleton (C) through the anchor pin (P) as a medium. As a result, the new finishing material (T) can be applied with excellent durability strength without fear of peeling or rising.

Such an effect can be achieved by the second invention described in claim 2 in exactly the same manner. Particularly, as in the second invention, the anchor pin (P) is used.
The adhesive injection nozzle (grease gun) (grease gun) (grease gun) () through the hollow interior of the adhesive agent (B2) that has an outflow effect on the periphery and the boundary surface (G) between the old finishing material (M) and the concrete skeleton (C). If it is injected / filled with N), the effect of retaining the new finishing material (T) on the concrete skeleton (C) can be further enhanced, and the lifting of the new finishing material (T) can be completed more completely. Can be prevented.

Further, if the punching metal and various wire meshes according to claim 3 are adopted as the unit base material (A), it is possible to maximize the mass production effect of repair parts, which is required in large quantity. More and more practical.

Further, according to the constitution of claim 4, the unit base material (A) can be more strongly adhered and integrated, so that the old finish material (M) is particularly utilized as a recycled base material of the new finish material (T). In some cases, this has the effect of significantly enhancing this.

[Brief description of drawings]

FIG. 1 is an overall schematic front view showing a state of repairing an outer wall according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view taken along line 2-2 of FIG. 1, which also shows an arrangement form of anchor pins.

FIG. 3 is a cross-sectional view showing a state in which a unit base material is attached to an old finish material.

FIG. 4 is a cross-sectional view showing a drilling work process from an old finish to a concrete skeleton.

FIG. 5 is a cross-sectional view showing a state where the anchor pin driving hole is provided.

FIG. 6 is a cross-sectional view showing an anchor pin driving operation process into an anchor pin driving hole.

FIG. 7 is a cross-sectional view showing a plug tapping work step of the anchor pin.

FIG. 8 is a cross-sectional view showing a state where the anchor pins have been driven in.

FIG. 9 is a cross-sectional view showing a step of injecting an adhesive into the anchor pin.

FIG. 10 is a cross-sectional view showing a state in which a new finishing material is overcoated.

FIG. 11 is a perspective view showing a preferred modified embodiment of the anchor pin.

FIG. 12 is a side sectional view of FIG.

FIG. 13 is a cross-sectional view showing a driven state of the anchor pin.

FIG. 14 is a perspective view showing a unit base material extracted.

FIG. 15 is a front view showing a first modified example of the unit base material.

16 is a sectional view taken along line 16-16 of FIG.

FIG. 17 is a cross-sectional view showing a usage state of the unit base material.

FIG. 18 is a cross-sectional view showing a second modified example of the unit base material in use.

FIG. 19 is a perspective view showing a unit base material for a corner of a building.

FIG. 20 is a cross-sectional view showing a usage state of the unit base material.

FIG. 21 is a cross-sectional view showing a construction state of a modified example corresponding to FIG.

[Explanation of symbols]

 (13) · Large diameter head section (17) · Split groove (19) · Through hole (25) · Anchor pin driving hole (26) · Fiber sheet (A) · · Unit base material (B1) (B2) · Adhesion Agent (C) ··· Concrete skeleton (G) · · Boundary surface (M) · · Old finishing material (mortar outer wall) (P) · · Anchor pin (T) · · New finishing material (x) · · Crossover part ( Float)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryoichi Hatano 2-2 Otemachi 2-chome, Chiyoda-ku, Tokyo Urbannet Otemachi Building NTT T Urban Development Co., Ltd. (72) Inventor Taki Takizaki Osaka 3-2-17 Nishi-Tenma, Kita-ku, Osaka City, Osaka Prefecture KFC Co., Ltd.

Claims (4)

[Claims] 1. A unit base material (A) having a large number of through holes (19) formed therein, and a hollow anchor pin (P) provided with a split groove (17) for expanding from the tip. Then, first, the unit base material (A) is adhered to the crossing portion (x) of the unit grid marked on the surface of the old finish material (M) or the concrete body (C) that has been scraped and balanced. The agent (B1) is attached in a scattered distribution state to integrate, and then an anchor pin driving hole (25) having a depth reaching from the center of the unit base material (A) to the inside of the concrete skeleton (C) is drilled. Anchor pin (P) installed and driven into the driving hole (25)
With the large-diameter head section (13), the unit base material (A) is pressed so as not to float up, and finally the new finish material (T) is applied to the surface of the old finish material (M) or its concrete skeleton (C). A method for repairing an outer wall of a building, characterized in that the above is applied as a coating state in which the large-sized head portion (13) of the unit base material (A) or the anchor pin (P) is buried. 2. A unit base material (A) having a large number of through holes (19) formed therein, and a hollow anchor pin (P) provided with a split groove (17) for expanding from the tip. Then, first, the unit base material (A) is adhered to the old finishing material (M) or the floated portion (x) of the unit grid marked on the surface of the concrete body (C) that has been scraped and balanced. The agent (B1) is attached in a scattered distribution state to integrate, and then an anchor pin driving hole (25) having a depth reaching from the center of the unit base material (A) to the inside of the concrete skeleton (C) is drilled. Anchor pin (P) installed and driven into the driving hole (25)
The head portion (13) having a large diameter is used to hold the above-mentioned unit base material (A) so that it cannot be lifted up, and thereafter, the adhesive (B
2) by injecting the adhesive (B2) from the split groove (17) around the anchor pin (P) and the boundary surface (G) between the old finishing material (M) and the concrete skeleton (C). ), And finally, the new finishing material (T) is added to the surface of the old finishing material (M) or its concrete skeleton (C), and the diameter of the unit base material (A) or anchor pin (P) is increased. A method for repairing an outer wall of a building, characterized by applying a top coat as a covering state in which the head portion (13) is buried in a hollow. 3. A method for repairing an outer wall of a building according to claim 1, wherein a punching metal, a metal lath, a wire lath, or a wire mesh is used as the unit base material (A). 4. An adhesive (B1) is applied to the surface of the unitary base material (A) to the old finishing material (M) or its concrete skeleton (C).
The unit base material (A) and the old finishing material (M) or the concrete skeleton (C) while the adhesive agent (B1) is uncured when they are attached and integrated by
The method for repairing an outer wall of a building according to claim 1 or 2, characterized in that a fiber sheet (26) having a three-dimensional network structure is stuck and intervened between the fiber sheet and the fiber sheet so as to be fluffed.