KR101631037B1

KR101631037B1 - A method for repairing crack defect using Pin-Port and a device for injecting liquid to repair the crack

Info

Publication number: KR101631037B1
Application number: KR1020150151118A
Authority: KR
Inventors: 김천만; 김경민; 김대영; 김은영; 조양현
Original assignee: 주식회사 케이피지; (주)대우건설; (주)선공이엔씨
Priority date: 2015-10-29
Filing date: 2015-10-29
Publication date: 2016-06-15

Abstract

The present invention relates to a crack repairing method using a pin port and a device for injecting repairing liquid, which is used for the same. The crack repairing method using the pin port easily injects a repairing liquid into a crack line while water is removed from a wall. The crack repairing method includes: a step of forming first and second detachment grooves having a groove of a fixed length on both left and right sides of the crack line formed on the wall; a detachment step of forming an insertion groove by detaching a wall part between the first and second detachment grooves; a step of installing the device for injecting the repairing liquid in the insertion groove; and a step of injecting the repairing liquid into the crack line by supplying the repairing liquid to the device for injecting the repairing liquid.

Description

Technical Field [0001] The present invention relates to a crack repairing method using a pin port,

The present invention relates to a crack repairing method using a pin port and a repair fluid injecting apparatus used therein, and it is an object of the present invention to provide a repair fluid injecting apparatus using a fin port, And more particularly, to a crack repairing method using a pin port and a repair fluid injecting device used therein.

Generally, a concrete structure tends to crack on the outside or inside of the structure due to various factors such as drying shrinkage, temperature change and leakage of concrete.

Also, if there is a lot of load such as the floor of the underground parking lot or where the construction of the waterproof layer and the finishing concrete layer in the general floor slab is poor, many of the finishing concrete layer is floated even though it is not exposed to the outside of the structure.

Water and air are easily introduced into the cracks and excursions generated in the above-mentioned structure, and the weathering of the concrete is promoted in the structure due to the influxed water and air, thereby causing corrosion of the reinforcing bars, which has a serious effect on the life and safety of the structure .

In such a cracked structure, repair fluid is injected between the cracks to repair the crack. Generally, in order to inject a repair fluid, a groove is formed by using a crack line (L) ediler as shown in FIG. 1, and then a packer capable of injecting a repair fluid is installed, . R 1 to R 5 shown in FIG. 1 show a point to be drilled and a point at which the packer is installed.

However, as shown in FIG. 2, when the concrete structure 1 is drilled, the concrete surface is crushed to block the entrance of the crack, and the repair fluid can not be easily injected into the crack line L1 . In order to overcome the clogging phenomenon, when the injection pressure of the remediation liquid is excessively increased, there arises a problem that the packers attached to the surface of the structure can not withstand the injection pressure and fall off.

The present invention relates to a crack repairing method using a fin port and a repair fluid injecting apparatus used therein, in which a repair fluid can be easily injected into a crack line and a repair fluid can be injected in a state in which water existing in the wall is easily removed It is an object of the present invention to provide a crack repairing method using a pin port and a remediation solution injecting device used therein.

According to an aspect of the present invention, there is provided a method of repairing cracks using a pin port, the method comprising: forming first and second peeling grooves having grooves having a predetermined length on both sides of a crack line formed in a wall; A peeling step of peeling the wall portion between the first and second peeling grooves to form an insertion groove; Installing a maintenance liquid injection device in the insertion groove; And supplying a repair fluid to the repair fluid injection device to inject the repair fluid into the interior of the crack line.

It is also preferable that the remedial fluid injector is installed at predetermined intervals along the crack line and the remedial fluid is injected sequentially from one side to the other along the crack line.

In addition, in the case of the next refill solution injecting apparatus which is installed adjacent to the refill solution injecting apparatus when the refill solution is injected into the refill solution injecting apparatus, the repair fluid is sequentially injected from one side to the other along the crack line, It is preferable that the water present be discharged.

Preferably, the first and second peeling grooves are formed at a time by a grinder having a pair of blades spaced from each other.

According to another aspect of the present invention, there is provided an apparatus for use in a method for repairing cracks, the apparatus comprising: a base; a first protrusion protruding from one side of the base, A body portion having an inserting portion inserted into the space between the base and the first engaging portion protruding from the other side of the base; An elastic storage tube having one end connected to the first coupling portion and capable of expanding and contracting elastically and storing the repair fluid when inflated and injecting the repair fluid into the inside of the crack line by a contractive force during contraction; A repair fluid injector coupled to the other end of the elastic storage tube and having an injection hole into which the repair fluid is injected; A first fastening cap coupled to the body portion while pressing the elastic storage tube; And a second coupling cap coupled to the maintenance fluid injection unit while pressing the elastic storage pipe.

In addition, it is preferable that a protruding engagement protruding from the inner circumferential surface of the insertion groove is formed on the outer peripheral surface of the insertion portion.

It is preferable that a check valve, which is not bent in a direction opposite to a direction in which the repair fluid is injected, is bent, and the repair fluid is injected into the repair fluid injector.

It is also preferable that an open holding pin inserted into the maintenance liquid injecting portion and holding the check valve in an open state is included.

Further, it is preferable that a spacing projection protruding from the bottom surface of the base is provided.

According to an aspect of the present invention, there is provided a method of repairing cracks using a pin port, comprising: injecting a repair liquid into a crack line so that an entrance of a crack line is not blocked; Thereby providing an effect of filling the remedying liquid while being discharged to the outside.

According to another aspect of the present invention, there is provided an apparatus for injecting a remedial fluid according to another aspect of the present invention, wherein an inserting portion formed in an inserting groove formed on a cracking line is inserted to prevent the inserting groove from being separated from the inserting groove, It is possible to easily discharge the water existing in the crack line to the outside of the wall.

FIG. 1 is a view showing a drilling on a crack line in a conventional crack repairing method, FIG.
FIG. 2 is a view showing a state in which the entrance of a crack is blocked when drilling in FIG. 1;
3 is a flow chart according to an embodiment of the present invention,
FIGS. 4 to 7 illustrate a process of injecting a remedial solution according to an embodiment of the present invention;
8 is a perspective view of a double cutting edge employed in an embodiment of the present invention,
FIG. 9 is an exploded perspective view of a maintenance fluid injection device according to another embodiment of the present invention, FIG.
10 is an exploded sectional view in the installed state of Fig. 9, Fig.
11 shows a state in which the remedial fluid is filled in the remedial fluid infusion device,
Fig. 12 is a drawing showing the main part of Fig. 11,
Fig. 13 is a view showing the essential part of Fig. 12,
14 is a view showing an open holding pin,
Fig. 15 is a drawing showing the essential part of Fig. 9.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a flow chart according to an embodiment of the present invention, FIGS. 4 to 7 illustrate a process of injecting a remedial solution according to an embodiment of the present invention, FIG. 8 is a cross- It is a perspective view of the day. FIG. 9 is an exploded perspective view of a maintenance fluid injector according to another embodiment of the present invention, FIG. 10 is an exploded sectional view of the maintenance fluid injector of FIG. 9, and FIG. Fig. 12 is a drawing showing the main part of Fig. 11, and Fig. 13 is a drawing showing the main part of Fig. Fig. 14 is a view showing an open holding pin, and Fig. 15 is a drawing showing a main portion of Fig.

Referring first to FIG. 3, according to an aspect of the present invention, a crack repairing method using a pin port is provided. The crack repairing method using the pin port includes steps S10 and S10 of forming first and second peeling grooves 5 and 6 having grooves of a predetermined length on both left and right sides of a crack line L formed in the wall 2 A peeling step S20 of peeling the wall 2 between the first and second peeling grooves 5 and 6 to form an insertion groove 7; And a step S40 of injecting the remedial fluid 4 into the interior 1 of the crack line by supplying the remedial fluid 4 to the remedial fluid injector 100 .

4, in the step of forming the first and second peeling grooves 5 and 6, the first and second peeling grooves 5 and 6 are formed along the cracking line L, A point at which the injection apparatus 100 is to be installed is selected, and a pair of right and left sides of the crack line L are formed. The first and second peeling grooves 5 and 6 are formed using a grinder 200 equipped with a rotating blade 210.

8, the blade 210 may be a double blade, and the first and second peeling grooves 5, 5 may be formed in the crack line L by a pair of blades spaced apart from each other. 6) can be formed at one time.

Of course, the first and second peeling grooves 5 and 6 may be formed on the right and left sides of the crack line L by using a grinder equipped with a single blade. Referring to FIG. 4, P1 to PN indicate the positions where the maintenance fluid injector is to be mounted, and P1 to P3 show the first and second peeling grooves 5 and 6, and P4 to PN The first and second peeling grooves 5 and 6 can be formed.

Then, as shown in Fig. 5, the peeling step S20 is performed.

The peeling step S20 is a step of removing the wall 2 between the first and second peeling grooves 5 and 6 to form the insertion groove 7, A tool 300, for example, a screwdriver, is inserted into the second peeling groove 6 to remove the wall between the first and second peeling grooves 5, 6 using the principle of the lever.

The space between the first and second peeling grooves 5 and 6 is formed so as to secure a space for installing the maintenance liquid injecting apparatus 100. [ 5, the insertion groove 7 is formed by using a tool at the point P3, and the insertion groove 7 is formed in the same manner at the remaining points.

Subsequently, the maintenance liquid injector installation step S30 is performed.

6, the repair fluid injector 100 is installed in the insertion groove 7 to inject the remedial fluid 4 into the interior of the crack line L. As shown in FIG. The concrete constitution of the remedial fluid injection device 100 will be described later. In the present embodiment, the remedial fluid injector 100 is referred to as a so-called pin port.

Subsequently, the maintenance liquid injection step S40 is performed.

7, the remedial fluid injecting step S40 is a step of supplying the remedial fluid 4 to the remedial fluid injecting apparatus 100 and injecting the remedial fluid 4 into the interior of the crack line L. As shown in FIG.

According to the present embodiment, the repair fluid injector 100 is installed at predetermined intervals along the crack line L. The repair fluid injector 100 is sequentially injected along the crack line L from one side to the other side, do. The inside of the crack line L is connected to each other so that the maintenance liquid 4 can fill the inside of the crack line L tightly when the repair liquid 4 is injected sequentially.

According to the embodiment of the present invention, the remedial liquid 4 is injected sequentially from one side to the other along the crack line L. When the remedial liquid 4 is injected into the remedial fluid injector 100, In the next refill liquid injector 100 installed adjacent to the refill injector 100, water existing inside the wall can be discharged.

More specifically, FIG. 7 shows a state where the remedial liquid 4 is injected at the point P3. In the present embodiment, since the remedial fluid 4 is injected sequentially along the crack line L, the remedial fluid injection is completed in P1 and P2, and the remedial fluid 4 is injected at the point P3 will be. Subsequently, the maintenance liquid (4) is injected into the point P4 at the next meeting.

This embodiment relates to a method for repairing cracks in a concrete wall, and can be used for ceilings, vertical walls, or floor surfaces of a building. For example, when water is present in the wall 2 at the time of ceiling repair work, if the open maintenance pin 80 is inserted into the repair fluid injection device 100 at the point P4 as shown in FIG. 7, The water existing inside the crack line L is discharged through the repair fluid injector 100 at the point P4 when the pressure to be injected into the crack 4 is exerted. The operation of discharging water when the open-maintenance pin 80 is installed in the remedial-fluid injecting apparatus 100 will be described later. Of course, the crack repairing method according to the embodiment of the present invention can also be used in the case where there is no water inside the wall body 2.

In the crack repairing method using the pin port according to the present embodiment, the wall portion between the first and second peeling grooves 5 and 6 is removed at once to form the insertion groove 7, L, and thus provides an effect of easily injecting the repair liquid into the interior of the crack line L. [0064] In addition, when water is present in the wall 2, the injection of the remedial liquid 4 causes the water to be discharged to the outside, thereby providing an effect of closely filling the remedial liquid 4 in the crack line L.

According to another aspect of the present invention, there is provided a maintenance fluid injection device (100) used in the crack repairing method. Hereinafter, the maintenance fluid injector 100 according to the present embodiment will be described in detail with reference to FIGS. 9 to 14. FIG.

9, the remedial fluid injection device 100 according to the embodiment of the present invention includes a body 10, an elastic storage tube 20, a maintenance fluid injection unit 30, a first fastening cap 40, 2 fastening cap 50.

The body portion 10 includes a base 12, an insertion portion 70, and a first engagement portion 13.

The base (12) is a flat portion provided between the insertion portion (70) and the first engaging portion (13). According to the present embodiment, a gap holding protrusion 121 protrudes from the bottom surface of the base 12. 10 and 11, when the insertion portion 70 is inserted into the insertion groove 7, the bottom surface of the base 12 contacts the surface of the wall 2 So that a predetermined interval can be maintained.

The insertion portion (70) protrudes from one side of the base (12). The insertion portion 70 is inserted into the space between the first and second peeling grooves 5 and 6, that is, the insertion groove 7. As shown in FIG. 10, according to the present embodiment, a locking protrusion 71, which catches on the inner circumferential surface of the insertion groove 7, is protruded from the outer circumferential surface of the insertion portion 70. The maintenance fluid injector 100 is prevented from being taken out of the insertion groove 7 by the injection pressure when the maintenance fluid 4 is injected by the locking protrusion 71. [

The adhesive applied to the outer peripheral surface of the inserting portion 70 is inserted into the inserting groove 7 after the adhesive agent such as epoxy is applied to the outer circumferential surface of the inserting portion 70 and then the inserting portion 70 is inserted into the inserting groove 7, A part of the adhesive is pushed into the space between the inserting portion 70 and the gap retaining protrusion 121. At this time, the adhesive 70 is pushed out of the inserting groove 7, So that the adhesive can firmly adhere the base 12 to the surface of the wall 2. According to the present embodiment, after the adhesive is primarily applied to the outer peripheral surface of the insertion portion 70, the insertion portion 70 is inserted into the insertion groove 7, An adhesive may be applied to the outer circumferential surface of the fastening cap 40 to adhere the repair fluid injection device 100 to the wall.

The gap holding protrusions 121 are formed on the bottom surface of the base 12 so that the bottom surface of the base 12 is spaced apart from the wall body 2 and the body 10 is screwed to the first fastening cap 40 So that the body 10 can be easily rotated to facilitate screwing.

The first engaging portion 13 is a hollow tube that protrudes from the other side of the base 12 and extends. The first engaging portion 13 is formed on the opposite side of the inserting portion 70. A first coupling part 15 having a first inclined face 15a whose outer diameter is smaller toward the upper side is formed at the upper end of the first coupling part 13 and a second coupling part 15 is formed at the lower end of the first coupling part 13 at the center of the base 12 2) is formed in the outer surface of the base plate (2). A thread 18 is formed on the outer circumferential surface of the first engaging part 13.

11, the elastic storage pipe 20 is resiliently expandable and contractible, and the maintenance liquid 4 is stored while being expanded. When the maintenance liquid 4 is stored into the crack line L by the contractive force during shrinkage, As shown in FIG. One end of the elastic storage tube 20 is coupled to the first engagement portion 13. Specifically, one end of the elastic storage tube 20 is fitted into the first coupling part 15.

The maintenance fluid injector 30 is connected to a line for supplying the maintenance fluid 4 from the maintenance fluid storage tank 400 to the upper end of the hollow pipe having the injection hole 33 into which the repair fluid 4 is injected, And a second engagement portion 31 having a second inclined face 31a whose outer diameter becomes smaller toward the lower side is formed. The other end of the elastic storage tube 20 is connected to the second fastening part 31 and the thread 36 is formed on the outer circumferential surface of the repair liquid injection part 30.

According to the present embodiment, a check valve 32 for preventing the backwash of the maintenance liquid 4 is coupled to the maintenance fluid injector 30.

12 and 13, the check valve 32 is bent in a direction in which the remedial fluid 4 is injected from the inside of the remnant fluid injector 30, and is opposite to the direction in which the remedial fluid 4 is injected Direction.

Specifically, the check valve 32 includes an annular stopping protrusion 34 formed on the inner circumferential surface of the injection hole 33, and an outer circumferential surface of the stopping protrusion 34 communicating with the injection hole 33 And an elastic plate 35 which is detachably coupled to the insertion hole 32a and is elastically deformed to open and close the injection hole 33. [

The elastic plate 35 includes an insertion portion 35a which penetrates through the insertion hole 32a and is located inside the injection hole 33 and an engagement portion 35b which is engaged with the outer peripheral surface of the insertion hole 32a, And a gripping groove 35c for gripping the engaging portion 35b is formed in the engaging portion 35b. The thickness W1 of the fitting portion 35a is smaller than the thickness W2 of the engaging portion 35b. The thickness W1 of the fitting portion 35a is formed to be smaller than the thickness W2 of the hooking portion 35b so that the fitting portion 35a is easily bent when the repair liquid 4 is injected.

As shown in FIGS. 10 and 11, the first fastening cap 40 has a threaded hole 41 formed on an inner circumferential surface thereof, and a lower end thereof is screwed to the thread 18 of the first fastening portion 13 A first pressing surface 40a having an inner diameter smaller toward the upper side corresponding to the first inclined surface 15a is formed so as to press the elastic storage tube 20 against the first inclined surface 15a on the inner circumferential surface of the upper end portion do.

The second fastening cap 50 is formed with a thread 51 on the inner circumferential surface thereof and an upper end thereof is screwed to the thread 36 of the repair fluid injecting part 30, A second pressing surface 50a whose inner diameter becomes smaller toward the lower side corresponding to the second inclined surface 31a is formed so as to press against the second inclined surface 31a.

The repair fluid injector 100 may include an open maintenance pin 80 that is inserted into the repair fluid injector 30 to keep the check valve 32 in an open state in the embodiment of the present invention .

The open holding pin 80 keeps the check valve 32 in the open state and discharges water or air inside the crack line L through the injection hole 33.

Specifically, the open holding pin 80 is inserted into the injection hole 33 to elastically deform the elastic plate 35 to open the injection hole 33, and the elastic plate 35 is resiliently restored The opening holding pin 80 is not pulled out and the injection hole 33 is kept in the open state by the force to be drawn.

It is necessary to attach the remedial fluid injector 100 along the crack line L by using an adhesive such as epoxy and discharge the water or air existing in the crack line L to the outside for crack repairing. It is preferable that the open holding pins 80 are inserted into at least one of the repair fluid injectors 100 attached to the crack line L. [

7, the open-maintenance pin 80 is inserted into the adjacent maintenance-fluid injector 100 into which the next-time maintenance fluid is injected, while the maintenance fluid is injected into the maintenance-fluid injector 100 to which the maintenance fluid 4 is injected. The open holding pins 80 may be coupled to a plurality of the remedial fluid injectors 100 after the point P4.

The open holding pin 80 is inserted into the injection hole 33 and the elastic plate 35 of the check valve 32 is elastically restored by the force to release the open holding pin 80, The injection hole 33 is kept open. When water is present in the crack line L, water is discharged to the outside through the injection hole 33 due to the injection pressure of the remediation liquid at the time of injecting the remedying liquid 4, The internal air is discharged through the injection hole 33 by the injection pressure of the liquid 4. Therefore, the maintenance liquid (4) is tightly filled in the crack line (L) by the open holding pin (80).

When the maintenance liquid injecting apparatus 100 in which the open maintenance pin 80 is not inserted is completed, the open maintenance pin 80 is removed from the maintenance liquid injection apparatus 100, The repair fluid 4 is injected into the interior 1 of the crack line L by filling the repair fluid 4 after removing the use pin 80.

The maintenance liquid is injected through the injection hole 33 of the repair fluid injector 100 disposed adjacent to the open maintenance pin 80 when the repair fluid is injected through the repair fluid injector 100. [ It can be easily judged visually that the repair liquid is sufficiently filled in the crack line L. [

Hereinafter, the operation of the maintenance fluid injector 100 according to the above configuration will be described.

First, each component of the remedial fluid injector 100 is assembled. 12, the elastic plate 35 is inserted into the insertion hole 32a provided in the repair fluid injecting section 30 and is engaged.

Then, the first fastening cap 40 and the second fastening cap 50 are coupled to both ends of the elastic storage tube 20.

One end of the elastic storage tube 20 to which the first fastening cap 40 is coupled is inserted into the first fastening part 15 and the first fastening cap 40 is fastened in the downward direction, 40 are screwed to the first engaging portion 13. The first pressing surface 40a presses the elastic storage tube 20 toward the first inclined surface 15a of the first coupling portion 15 so that the elasticity The storage tube 20 is tightened between the first fastening cap 40 and the first fastening portion 13.

The other end of the elastic storage tube 20 to which the second fastening cap 50 is coupled is inserted into the second fastening part 31 of the repair fluid injecting part 30 and the second fastening cap 50 And the upper end of the second fastening cap 50 is screwed to the maintenance liquid injection unit 30 while being tightened in the upward direction.

At this time, as in the case of the first fastening cap 40, the second fastening cap 50 moves upward and the second pressure applying surface 50a moves the elastic storage tube 20 to the second fastening portion 31, So that the elastic storage tube 20 is tightened between the second fastening cap 50 and the second fastening portion 31. As a result,

6 and 7, the remediation liquid injecting apparatus 100, which has been assembled as described above, is adhered to the crack line L of the concrete wall 2.

After the first and second peeling grooves 5 and 6 are formed in the crack line L, an insertion groove 7 is formed and the insertion portion 70 of the repair fluid injector 100 is inserted into the insertion groove 7).

An adhesive is applied to the outer peripheral surface of the insertion portion 70, and the insertion portion 70 is pushed into the insertion groove 7. When the insertion portion 70 is fitted into the insertion groove 7, the adhesive applied to the outer circumferential surface is pushed out. Secondarily, an adhesive is applied to the outer peripheral surface of the base 12 and the first fastening cap 40 and the wall 2 to adhere the wall body 2 to the maintenance fluid injector 100.

Subsequently, a line for supplying the maintenance liquid 4 from the maintenance liquid storage tank 400 is connected to the injection hole 33 to inject the maintenance liquid 4. [ 11, the elastic plate 35 is elastically deformed downward by the injection pressure of the remedial liquid 4 so that the injection hole 33 is opened and the injected remedial liquid 4 flows into the elastic storage tube 20, Is accommodated in the elastic storage tube (20).

At this time, the expansion space 14 receives the maintenance fluid 4 to lower the backflow pressure of the maintenance fluid 4, and the maintenance fluid 4 is injected into the cracking line L by the contractile force of the elastic storage tube 20 The locking projection 71 of the insertion portion 70 is caught by the inner circumferential surface of the insertion groove 7 to prevent the maintenance liquid injection device 100 from being detached from the insertion groove 7.

Even if the maintenance liquid 4 flows backward due to the pressure inside the crack line L, the elastic plate 35 is caught by the annular stopping jaw 34 located at the upper portion thereof, It does not leak backward.

The elastic storage pipe 20 is contracted to inject the maintenance liquid 4 into the crack line L. When the maintenance liquid 4 is injected and the elastic storage pipe 20 is contracted, And the repair liquid 4 is further injected into the interior of the crack line (L).

As described above, the maintenance fluid injector 100 according to the embodiment of the present invention is configured such that the elastic storage pipe 20 is connected to the first coupling portion 13 and the maintenance fluid port 20 by using the first coupling cap 40 and the second coupling cap 50, The first and second pressing surfaces 40a and 50a of the first and second fastening caps 40 and 50 can easily and firmly attach the elastic storage tube 20 to the first and second fastening portions 15 and 15, , 31, so that the maintenance liquid 4 can be prevented from leaking from both ends of the elastic storage pipe 20.

The check valve 32 for preventing the backwash of the maintenance liquid 4 includes a resilient plate 35 capable of resiliently deforming and a stopper 35 for preventing the injection plate 33 from being opened by bending the resilient plate 35 upward And the jaw 34, it is possible to prevent the backwash of the maintenance liquid 4 simply and effectively.

Since the elastic plate 35 is detachably coupled through the insertion hole for communicating the injection hole 33 with the outside, when the elastic plate 35 is easily engaged and the elastic plate 35 needs to be replaced, The elastic plate 35 can be pulled out from the injection hole 33 by using the holding groove 35c so that the elastic plate 35 can be easily engaged and replaced.

The thickness W1 of the fitting portion 35a is formed to be thinner than the thickness W2 of the fitting portion 35b so that the thickness of the fitting portion 35b thicker than the fitting portion 35a is made smaller than the thickness W2 of the fitting portion 35a As shown in Fig. Thus, the elastic deformation of the fitting portion 35a from the position where the injection hole 33 is closed to the downward side is made easier than the elastic deformation toward the upper side, so that the backwash of the maintenance liquid 4 can be effectively prevented.

Also, since the elastic storage tube 20 is contracted as the maintenance liquid is injected, the reinsertion timing of the maintenance liquid 4 can be visually confirmed through the state of the elastic storage tube 20. [ Therefore, the re-injection timing of the remedial fluid 20 can be easily determined, thereby shortening the working time.

Further, when the open holding pin 80 is used, water or air is discharged through the maintenance liquid injecting apparatus 100 in which the open holding pin 80 is inserted by the injection pressure of the liquid. Therefore, water or air remaining in the crack line L can be effectively removed, thereby simplifying the operation and reducing the cost.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

5 ... first peeling groove 6 ... second peeling groove
7 ... insertion groove 100 ... maintenance liquid injection device
10 ... body part 12 ... base
13 ... first coupling portion 14 ... extended space
70 ... insertion portion 71 ... engaging projection
15 ... first fastening part 20 ... elastic storage pipe
30 ... maintenance liquid injecting part 31 ... second fastening part
32 ... check valve 34 ... engagement jaw
35 ... elastic plate 40 ... first fastening cap
50 ... second fastening cap 80 ... open holding pin
200 .. Grinder 400 ... Maintenance liquid tank

Claims

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Forming first and second peeling grooves having grooves having a predetermined length on both sides of the crack line formed on the wall;
A peeling step of peeling the wall portion between the first and second peeling grooves to form an insertion groove;
Installing a maintenance liquid injection device in the insertion groove;
And supplying the maintenance liquid to the inside of the crack line by supplying a maintenance liquid to the repair liquid injection device,
A body having a base, an insertion portion protruded from one side of the base and inserted into the insertion groove, and a first engagement portion protruding from the other side of the base;
An elastic storage tube having one end connected to the first coupling portion and capable of expanding and contracting elastically and storing the repair fluid when inflated and injecting the repair fluid into the inside of the crack line by a contractive force during contraction;
A repair fluid injecting unit coupled to the other end of the elastic storage tube and having an injection hole into which the repair fluid is injected;
A first fastening cap coupled to the body portion while pressing the elastic storage tube;
And a second coupling cap coupled to the maintenance fluid injector while pressurizing the elastic storage tube.

6. The method of claim 5,
Wherein a locking protrusion is formed on an outer circumferential surface of the insertion portion to engage with an inner circumferential surface of the insertion groove.

6. The method of claim 5,
Wherein the check valve is coupled to the repair fluid injecting unit so that the check valve is bent in a direction of injecting the repair fluid and is not bent in a direction opposite to a direction in which the repair fluid is injected.

8. The method of claim 7,
And an open holding pin inserted into the maintenance liquid injecting section to keep the check valve in an open state.

6. The method of claim 5,
And a gap retaining protrusion protruding from the bottom surface of the base is provided.