JPH09328907A - Method for repairing peeled part of outer wall finish - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the execution capability by installing a filling material supplying unit and a suction unit in communication holes, which are provided in a partial floated exterior material with a space in the vertical direction and which are communicated with a peeling space. SOLUTION: Communication holes 1, 1a, are drilled in a peeled part, which is generated in the surface of an outer wall of a concrete building frame M, at spaced positions in the vertical direction so as to achieve a peeling space K. A filling jig 4 is fixed to an upper hole 1 for temporary sealing and sucking jigs 6, 6a are fixed to lower holes 1a, for temporary sealing by putty or the like. A filling material supplying body at a natural pressure is connected to the jig 4, and a transparent hose of a suction device is connected to the jigs 6, 6a. Each valve of the jigs 4, 6, 6a is opened so as to reduce the pressure of the air inside of the space K, and while, the filling material is sucked into the space K for filling from the filling material supplying body. Furthermore, after recognizing flow-in of the filling material into the transparent hose, the valves of the jigs 6, 6a are closed, and after the filling material is hardened, the jigs 4, 6, 6a are removed. Filling time is thereby remarkably shortened, and the whole of the peeling space can be filled with the filling material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior material of a concrete building structure, and due to aging, a partial floating state (peeling part) between the concrete body and the attachment surface of the exterior material.
In the case of occurrence of the problem, the present invention relates to a method for repairing a peeled part of an outer wall finish, in which a non-adhesive part of a partially floating exterior material is injected, and a filler for repairing is injected into a peeling part to restore the adhesion state of the partially floating exterior material. .

[0002]

2. Description of the Related Art Conventionally, an exterior material adhered to a wall of a concrete frame of a concrete building or structure is partially peeled off from the wall of the concrete frame, and partially adhered or floated. If a problem occurs, attach the injection jig and the injector to the upper part of the partially peeled part as a measure for re-adhesion and repair, and use an adhesive (filler) such as epoxy resin in the injector.
Was injected into the separation space in a state of natural flow.

Supplying and injecting the filler in such a natural flow resin injection method has a drawback that a long time is required for the injection work because pressure is not applied to the filler, or the thin separation space is filled. The material could not be poured evenly, and there was the drawback that full re-adhesion was impossible even after repair work.

Regarding the fact that the filler is poured into the peeling space in a natural flow state, if a low pressure resin injection method for applying a low pressure, such as that used for repairing concrete cracks, is adopted, peeling will occur. When the resin is injected by applying a low pressure to the space, the exterior material is extruded in the direction of further peeling from the concrete skeleton, which leads to peeling and falling of the exterior material. Was impossible.

[0005]

SUMMARY OF THE INVENTION According to the present invention, repair work for injecting a filler into a partially floating peeling space of an exterior material generated between a wall surface of a concrete skeleton and a filling work is performed for a short time, and the entire peeling space is It is intended to provide a method for repairing a peeling portion of an outer wall finish, which enables a filler to be injected into the.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems that it is difficult to feed the filler into the entire separation space and the problem that it takes a long time for repair work based on the above-mentioned conventional technique.
At the upper and lower two places of the partially floating exterior material of the concrete skeleton, the separation holes of the exterior material are respectively provided with circulation holes, and the upper filler circulation hole and the lower suction circulation hole are provided with the filler supply section and the suction section. The air in the peeling space is sucked from the lower side to reduce the air pressure in the peeling space, and the filler is forcibly sucked into the peeling space by the negative pressure, and the filler is filled in the peeling space. Inject and fill.

By the filling and injecting work by the depressurization method, a negative pressure is applied to the filling material to forcibly inject the filling material into the peeling space, and the entire peeling space becomes a depressurized space. The filling material is fed to the whole and the details, and the filling material is also filled into all the small peeling spaces.

Further, at the boundary between the exterior material adhered to the surface of the concrete skeleton and the exterior material in the partially floating state, both exterior materials have a step difference in contact or non-contact with the concrete skeleton surface, If there is a crack at the boundary between the two exterior materials, temporarily seal the peripheral cracks around the floating exterior material (boundary), and inject the filler into the sealed separation space. It is a solution to the above problems.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the most preferred embodiments of the present invention will be described with reference to the drawings. In the present embodiment, partial non-adhesion of an outer wall concrete exterior material (exterior finishing material) formed outside and repair of a floating separation portion will be described. 6 is a cross-sectional view of the outer wall of the concrete structure, and FIG. 6 is a cross-sectional view of the outer wall. The outer wall concrete skeleton M is attached to the outer wall surface P that is in contact with the outside with an exterior material G (tiles in the figure) such as tiles and mortar. It is worn.

Then, the adhesive portion A which is in an adhesive state as a whole,
Partly non-bonded peeling part C, bonding part A and peeling part C
At the boundary B of the concrete, it is shown that a crack may occur at the boundary B of the floating start point, and the surface of the concrete skeleton M and the peeled portion C
FIG. 4 is a front view showing the boundary B of the outer wall surface P and the peeling portion C when the exterior material G is a tile, and FIG. 5 shows the exterior material G. It is a front view showing the boundary B and the peeling part C etc. at the time of mortar.

In addition to the above-mentioned repaired parts, the present invention is also applied to the interior material of the outer wall concrete skeleton M, the interior material of the concrete wall of the internal structural skeleton, or the floor surface and the ceiling surface,
In the present specification, the exterior material G of the concrete skeleton M including these is used.

Next, a repairing device for repairing the exterior finishing material G of the present invention when peeled off will be described. FIG. 1 is a perspective view showing the entire repair device. The repair device is an injection jig 4 that is attached to the peeling surface of the peeling portion C of the exterior material G on the outer wall surface P.
And a suction device with the filler supply body 2 attached to the injection jig 4 and attached to the peeling surface, the suction jigs 6 and 6a, the air tank 12 mounted on the traveling carriage 1201 and the casters 1001.
The suction device 3 is composed of 10 and the suction device 10 and the air tank 12 are connected by a flexible connection hose 15, and the connection hoses 14, 14 are connected to the air tank 12 and the suction jigs 6, 6a.
They are connected by a. Hereinafter, the repair device will be described in more detail.

As an example of the injection jig 4, as shown in FIG. 3, at the central position of the contact surface portion 7 contacting the surface of the exterior material G,
While projecting the injection port 8 penetrating in the thickness direction,
A valve 9 that can open and close a suction flow path is integrally provided in the injection port 8, and the discharge port 5a of the filling material container 5 is provided in the injection port 8.
Are connected for communication.

As an example of the suction jigs 6 and 6a, FIG.
As shown in FIG. 3, a structure similar to that of the injection jig 4 shown in FIG. 3 is used, and the connection hoses 14 and 14a of the suction device 3 are connected to the suction ports 8a of the suction jigs 6 and 6a.

As shown in FIG. 3, the filler supplying body 2 accommodates the filler W and is provided with a filler container 5 having a detachable lid 5b, and a discharge port 5a projecting from the bottom of the container. Discharge port 5a
Are inserted into the injection port 8 of the injection jig 4 and communicate with each other.

Further, as shown in FIGS. 8 and 9, the suction device 3 is schematically shown in the lower portion of the peeling portion C and, if necessary, at the upper position thereof, the through holes 1 formed in the exterior material G at regular intervals. 1a
Suction jigs 6 and 6a are installed in the air tank, and an air tank 12 for reducing the pressure is installed near the repair of the peeling portion C as shown in FIG. 1. The air tank 12 and the suction jigs 6 and 6a are connected to a hose. 14, 14a
And a suction device (vacuum) 10 which is connected to an air tank 12 via a connection hose 15 and sucks air.

As a detailed example of the suction device 3, as shown in FIG. 1, a suction device 10, for example, a suction port 11 of an electrically driven vacuum cleaner.
A relatively large capacity air tank 12 connected via a hose 15
, A plurality of decompression branch nozzles 13a provided in the air tank 12, and suction ports 8a of suction jigs 6, 6a fixed to the concrete skeleton M are connected to a transparent or translucent connection hose 14, Connected with 14a.

Next, the filler W to fill the peeled outer wall surface will be described. The filler W has a floating state (degree of cracking,
The width, thickness, and progressiveness) of the filler W are selected, and in consideration of adhesion, waterproofing, and flexibility, an inorganic type and an organic type are used alone or as a mixture, and as the inorganic type, for example, Cement milk and sodium silicate are used, and as the organic material, for example, polymer cement admixture, epoxy resin, polyester resin, etc. are used.

As the filler W contained in the filler supply body 2, various kinds of compounds as described above can be used. In any case, the filler W injected into the peeling space K has a peeling condition and a purpose. Therefore, the material and the composition are not limited.

Next, a method of repairing the peeling portion of the outer wall finish according to the present invention will be described. The outer wall surface P may be repaired, for example, in the case of tile finishing shown in FIGS. 4 and 6 or in the case of mortar as shown in FIG.

For the diagnosis of the peeled portion, for example, the peeling position is marked by investigating it by appearance floatation, judgment by hitting sound with a test hammer, peeling diagnosis by infrared rays, and the like.

The repair method after the diagnosis of the peeling place will be described based on the procedure of the repair flowchart of FIG. 12 and the related drawings. In the case where the exterior material G is a tile, as shown in FIGS. 7 and 8, with respect to the peeling portion C generated on the outer wall surface P of the concrete skeleton M, the peeling portion C on the outer wall surface P is located above and below. The flow holes 1, 1a ...
Perforate to reach.

Then, as shown in FIGS. 7 and 8, one injection jig 4 and a plurality of suction jigs 6 and 6a are attached to the upper and lower flow holes 1, 1a. Putty and other adhesives
Tighten the temporary seal with 20.

Next, as shown in FIGS. 1, 3 and 11, the filling material supplier 2 of natural pressure is connected to the injection jig 4 attached as described above, and as shown in FIGS. , The plurality of suction jigs 6 and 6a attached to the suction hose 3 and the branched connection hose 1
Connect 4 and 14a.

Then, when the valve 9 provided at the injection port 8 of the injection jig 4 is opened and the valve 9 provided at the suction port 8a of the suction jigs 6 and 6a is opened, the suction device 10 is operated. The suction action of the suction device 3 is the air tank 12, the connection hose 14,
It acts on the suction jigs 6 and 6a via 14a, and the air in the separation space K is sucked by the suction device 10 as shown by the arrows in FIGS. Is depressurized to a negative pressure state.

With the depressurizing action in the peeling space K,
As shown by the arrows in FIGS. 3, 8 and 9, the filler W is sucked from the filler supply body 2 into the separation space K, and the filler W adheres to both inner surfaces of the separation space K while the suction jig 6 is attached. , 6a, the details of the peeling space K where the peeling portion C is generated are filled with the filling material W.
Filled with.

A part of the filler W is sucking jigs 6 and 6a.
Alternatively, by operating the valve 9 of the suction jigs 6 and 6a after confirming that the filling material W has flowed into the connecting hoses 14 and 14a, that is, the transparent connecting hoses 14 and 14a. The suction port 8a is closed.

After confirming the discharge (discharge) of the filler W to all the suction ports 8a, the filler W is closed after the valve 9 is closed.
Then, the injection jig 4 and the suction jigs 6 and 6a are separated from the outer wall surface P, and the suction device 3 is removed.

Also, when the exterior material G is mortar,
This is almost the same as the case of the tile, and the repair work will be briefly described. As shown in FIG. 10, the through holes 1, 1a ... Are drilled in the outer wall surface P, and the injection jig 4 and the suction jigs 6, 6a are formed. Attached, as shown in FIG. 1, the suction device 3 and the filler supply body 2
Is attached, the negative pressure is formed in the peeling space K, the filling material W is filled in the peeling space K, and curing curing and removal are performed.

At the boundary B between the bonded portion A in the bonded state and the peeled portion C in the non-bonded state, a step crack is generated at the boundary B between the bonded portion A and the peeled portion C as shown in FIG. In the case where the peeling space K is impaired, the peripheral space cracks (boundary B) in the peeling range are temporarily sealed with the sealing material 25 to remove the peeling space K. Ensure the airtightness of.

The seal against the peripheral crack portion is
It is also appropriately applied when the exterior material G is a tile.

Next, application examples, precautions, detailed actions and the like of the working surface and working surface in the above-mentioned repair method will be added. For example, a plurality of flow holes 1, 1a ... Are drilled in the upper and lower portions of the peeling portion C at spaced positions, but when the spread of the peeling portion C in the vertical direction is small, a suction jig 6 attached to the exterior material G is used. , 6a is 1
.. Therefore, the flow holes 1, 1a ... May be two for suction and injection, and a plurality of flow holes 1, 1a .. In this case, a plurality of flow holes 1, 1a ... May be bored in the lateral direction.

That is, with respect to the vertical and horizontal spread of the peeling portion C,
If suction and injection are possible, respectively, the number and position of the suction holes can be appropriately selected, and when a plurality of suction holes 1, 1a ... Are provided, the intervals can also be appropriately selected, and are not limited to vertical surfaces. The same applies to the horizontal planes of the floor and ceiling.

The suction action of the suction jigs 6 and 6a is the suction port 8a.
Then, due to the uniformity of the air pressure, the air in the peeling space K is totally sucked, the filler W is fed, and the filler W is injected into the entire peeling space K. You can do it.

Further, the perforation points of the plurality of flow holes 1, 1a ...
The edge of the peeling portion C is preferable, but even if the position is slightly inside, the repair work of the peeling portion of the outer wall finish according to the present invention is possible, and the perforation points for the tile are shown in FIGS. In this way, it is preferable to form the flow holes 1, 1a ... At the joints from the viewpoint of appearance and workability, but as shown in the flow holes 1, 1a. Is also good.

Further, when the filling material W is injected into the peeling space K, the filling material W sucked from the filling material container 5 adheres to both inner surfaces of the peeling space K, and the filling material W on the tip side is sucked. The inside of the peeling space K is sucked in the direction of the jigs 6 and 6a to fill the inside of the peeling space K with a delay, and the negative pressure acts on the unfilled portion.
It is also injected as a whole, and the peeling portion C and the peeling space K near the filler supply body 2 are also filled.

Further, when the valve 9 of the suction port 8a of the suction jigs 6 and 6a, which has been injected into a predetermined amount, is closed, the filling material W in the peeling space K still has a slight depressurizing action. The filler W is sucked and diffused even after the closing, and the entire filler W is continuously injected into the separation space K at the suction port 8a where the injection is not completed.

In the action of suction and injection, the air and the filler W may not act linearly between the injection jig 4 and the suction jigs 6 and 6a depending on the conditions in the separation space K. It is assumed that the filling material W is evenly distributed in the peeling space K.
When the filling jig 4 cannot be filled,
Also, the positions of the suction jigs 6 and 6a can be changed or additional settings can be made.

During the pouring operation into the peeling space K, that is, when a negative pressure is applied, the pouring jig 4, the suction jigs 6 and 6a, and the sealing material 25, which are temporarily fixed to the concrete skeleton M, are attached.
Since a negative pressure action acts on the filling material W through the peeling space K, the filling jig W, the suction jig 6,
The 6a and the sealing material 25 do not separate, and the temporary attachment is firm and does not require strong fixing, so the adhesive 20 for fixing the suction jig 6, 6a and the sealing material 25 are adhesive with good peelability. Use tape or putty, etc., when leaving after work
There is no damage to the concrete skeleton M.

[0040]

INDUSTRIAL APPLICABILITY In short, the present invention is a concrete skeleton M
In the method of repairing the peeling portion C by peeling off the wall surface finish of the peeling space C, at least two peeling spaces K are provided in the peeling portion C.
Through the flow holes 1, 1a ...
1a: The injection jig 4 is attached to one side, and the other flow holes 1, 1a
The suction jig 6 is attached to the ...
The filler supply body 2 to be filled in is installed, the suction device 3 is installed in the suction jig 6, and the peeling space K is set by the suction device 3.
The air is sucked to reduce the pressure in the separation space K, and the filler W is forcibly injected into the pressure-removed separation space K from the filler supply body 2 mounted on the injection jig 4. Since the filling work of the filling material W into the space K is the forced suction method, the filling time of the filling material W can be significantly shortened as compared with the conventional natural flow-down method, and the work on a horizontal surface can be performed. You can also do it.

Further, the pouring jig 4, the suction jigs 6 and 6a, the filler supplying body 2, the sealing material 25 and the like are in a state of being suction-adhered to the concrete skeleton M at the time of the pouring work, and these are attached to the concrete skeleton M. The preparation work for mounting the member is facilitated, and even in a simple preparation state, the injection jig 4 and the like are not adsorbed and fallen off, and the injection work of the filler W can be performed, and the construction is simpler. Therefore, even an unskilled worker can perform the construction, and the suction part (suction jigs 6, 6a, etc.) and the filler supply part (injection jig 4, etc.) can be removed after the injection work is completed. Sometimes it can be done easily.

Further, since the filler W injected into the separation space K between the concrete skeleton M and the exterior material G is of a suction type, the filler W sucked and supplied from the filler supply body 2 is
The filler W, which is sucked in the direction of the suction jigs 6 and 6a receiving the suction action from the filling jig 4 of the filling material supply body 2 and sucked and injected into the peeling space K, is first applied to both inner surfaces of the peeling space K. Since the filler W adheres and flows in the direction of the suction jigs 6 and 6a, the filler W does not stop at the inlet side of the peeling space K to which the filler supply body 2 is attached, and the direction of the suction jigs 6 and 6a. The filling material W can be injected into the entire separation space K by flowing into.

Further, the injection jig 4 is attached to one of the flow holes 1, 1a, ... After confirming that the filler W has been sucked from the other suction jig 6, 6a by the suction device 3, suction is sequentially performed. Since it is stopped, the valve 9 provided at the suction port 8a of the suction jigs 6 and 6a can be tightened from the portion where the filling material W has been substantially injected into the peeling space K within a predetermined range, and the waste of the filling material W can be omitted. In addition, it is possible to prevent the filler W from flowing into the suction device 3.

Further, since the peripheral crack portion in the peeling range is sealed to seal the peeling space K, a crack or the like is generated at the boundary B between the adhesive portion A and the peeling portion C, and the sealing property of the peeling space K is secured. Even when not in use, the work can be done by temporarily sealing the temporary seal, which is a great practical effect.

[Brief description of drawings]

FIG. 1 is a schematic view showing an overall image of a repairing device for a peeling portion for finishing an outer wall.

FIG. 2 is an enlarged perspective view of a suction jig and a connection hose.

FIG. 3 is an enlarged perspective view of an injection jig and a filler supply body.

FIG. 4 is a front view of an outer wall in which a peeling portion has occurred in tile finishing.

FIG. 5 is a front view of an outer wall in which a peeling portion has occurred in mortar finishing.

6 is a longitudinal sectional view of the section of FIG.

FIG. 7 is a perspective view showing a mounting state of an injection jig and a suction jig with respect to a floating portion of a concrete skeleton during a peeling portion repairing step.

FIG. 8 is a vertical cross-sectional view of the concrete skeleton according to the present invention at the time of repairing the peeling portion of the outer wall finish.

9 is another embodiment of FIG. 8. FIG.

10 is another embodiment of FIG. 7. FIG.

FIG. 11 is a perspective view illustrating a state of temporary fixing and sealing with a putty on the boundary, following FIG. 10;

FIG. 12 is a flowchart of a repair method.

[Explanation of symbols]

 M Concrete frame G Exterior material K Separation space W Filler A Adhesive part B Border C Separation part 1, 1a ... Flow hole 2 Filler supplier 3 Suction device 4 Pouring jig 6, 6a Suction jig

Claims (3)

[Claims] 1. A method for repairing a wall surface finish of a concrete skeleton and repairing the peeling portion, wherein at least two spaces separated from the peeling portion are perforated with a flow hole to reach a peeling space, and one of the flow holes is provided. The injection jig is attached to the other side, the suction jig is attached to the other flow hole, the filler supply body for filling the peeling space is attached to the injection jig, and the suction device is attached to the suction jig. The suction device sucks air in the peeling space to reduce the pressure in the peeling space, and forcibly injects the filler into the pressure-reduced peeling space from the filler supply body mounted on the injection jig. How to repair the peeled part of the outer wall finish. 2. The method according to claim 1, wherein an injection jig is attached to one of the flow holes, and after confirming that the filler has been sucked from the other suction jig by the suction device, the suction is sequentially stopped. A method of repairing a peeled portion for finishing an outer wall, which is characterized in that 3. The method for repairing a peeled portion having an outer wall finish according to claim 1 or 2, wherein a peripheral edge cracked portion in the peeled range is sealed to seal the peeling space.