WO2018203602A1

WO2018203602A1 - Packer assembly for repairing cracks of concrete structures and method for repairing cracks using same

Info

Publication number: WO2018203602A1
Application number: PCT/KR2018/003747
Authority: WO
Inventors: 이성원
Original assignee: 유지씨 주식회사
Priority date: 2017-05-04
Filing date: 2018-03-30
Publication date: 2018-11-08
Also published as: KR20170057190A; KR101822867B1

Abstract

The present invention relates to a packer assembly for repairing cracks of concrete structures, and a method for repairing cracks using same, the packer assembly providing high-powered adhesiveness between repairing material for repairing cracks injected into a bored hole and an existing concrete structure, thereby not only eliminating the paradox of having to perform additional repair work on a repair, but also preventing the repairing material from spurting out through an interstial space. The method comprises: (S100) a hole boring step of boring, by using a drill, a portion around the clearance at which the crack is formed; (S200) a fine powder removing step of removing fine powder generated during a boring process, by opening a water or air opening/closing valve (140) in a state in which a packer (200), which is the end of the packer assembly (P), is inserted into the hole; (S300) a repairing material/hardening agent injecting step of simultaneously injecting the repairing material and a hardening agent into the hole (40) by opening a repairing material/hardening agent opening/closing valve (120) in a state in which the packer (200), which is the end of the packer assembly (P), is inserted after the fine powder generated in the hole is removed, and injecting the same in a state in which an ejection prevention means (170) of the packer assembly (P) comes in close contact with a wall surface so as to block ejection such that the repairing material and the hardening agent are not ejected to the peripheral clearance during the injection of the repairing material and the hardening agent; and (S400) a finishing step of finishing the surface of the crack when the repairing material/hardening agent is dried after the injection thereof.

Description

Packer assembly for repairing cracked parts of concrete structures and method of repairing cracked parts using the same

The present invention relates to a packer assembly for repairing a cracked site of a concrete structure and a method of repairing a cracked site using the same, and more particularly, to provide a strong adhesive force between a repaired material for repairing a cracked site and a conventional concrete structure that is injected into a perforated hole. To repair the cracks of concrete structures and the method of repairing cracked parts using the same, which not only breaks the contradiction of additional repair work, but also prevents the release of repair material into the gap. .

In general, a structure newly constructed using concrete such as a house, a multi-family house, a villa, an apartment, an officetel, and most of the structures after the new construction, have cracks 10 occurring inside or outside the walls, and such cracks also occur on the rooftop of the structure.

On rainy season or rainy days due to the cracks generated as described above, moisture or rain water may fall inside or below the concrete structure, and when repairing the cracks, the waterproofing liquid or silicon may be present in the cracks 20 of the cracks. This is completed by applying a waterproofing solution to the surface.

In addition, if the cracked part is large, the waterproofing liquid or silicon may be forcedly injected using a packer as described above, and then the finishing treatment may be performed. However, if the cracked part is leaked in a small gap of about 0.1 to 1 mm. As it is impossible to inject the waterproofing liquid or silicon in the same way as the above, it is necessary to make a hole around the cracked part and then inject the waterproofing liquid or silicon through the hole to perform waterproofing. After making an incision in the shape of a 'V' shaped groove, the waterproofing solution or silicon was injected to perform waterproof construction.

As a result, when repairing a site where a crack has occurred, it is common to inject a waterproof solution or silicon by drilling a gap 20 or a hole of the crack, and as an example thereof, the patent application No. 10-2012-0072812 ( Name of the invention: a method of waterproofing and repairing a crack part of a building).

In Patent Application No. 10-2012-0072812, a plurality of diagonal holes are drilled around the cracked portion, and any one of urethane, silicone, foamed resin, and mortar is injected into the hole, and a waterproof material mixed with a curing agent is injected. Next, a technique of sealing and repairing using wood and a cork stopper is disclosed.

Another example is Patent Registration No. 10-1513077 (name of the invention: a gap waterproof spray housing and a gap waterproof construction method using the spray housing).

Patent No. 10-1513077 discloses a technique for waterproofing a gap using a spray housing, but only a very small gap can be used for this purpose. In this case, the repair can be performed without drilling. There is this.

As disclosed in Patent Application No. 10-2012-0072812, in order to repair and repair a gap, a packer is generally used to inject a waterproofing solution. As a packer assembly of FIG. It is not possible, even if the waterproofing liquid is injected into the hole 40, there is a problem that the waterproofing liquid is not compatible with the existing concrete by the fine powder generated during the drilling process, the detachment phenomenon occurs.

In other words, in order to obtain strong adhesion between the injected waterproofing liquid and the existing concrete, it is necessary to completely remove the fine powder generated during the drilling process. However, considering the field work conditions up to now, the fine powder could not be removed. Problems such as the ejection of the waterproofing liquid into the gap by the injection pressure generated in the opening were exposed, and even after repairing, there was a contradiction that the repaired part should be repaired after a certain time.

Accordingly, the present invention has been conceived to solve the above problems, by providing a strong adhesive force between the repair material and urethane concrete, such as urethane, silicone, foamed resin, mortar injected into the hole of the crack and the existing concrete surface frequency In addition, the packer assembly for repairing cracked parts of concrete structures and the method of repairing cracked parts using the same are provided, which significantly reduces the number of cracks, and prevents the repair material from being ejected through the cracks in the cracked part. Has its purpose.

Packer assembly for repairing cracked site of the concrete structure of the present invention for achieving the above object, the repair material supply pipe 100 is supplied with any one repair material selected from urethane, silicone, foam resin, mortar and On the one side of the support tube 150 to be injected or blocked with a curing agent supply pipe 110 is supplied with a curing agent to be supplied with the repair material at the same time to cure the selected repair material and the repair material and the curing agent through the hole (40) Water or air is supplied to be connected to one side of the maintenance material / hardener opening and closing valve 120 and the support pipe 150 to be connected to remove fine powder generated in the hole during the drilling process using water or air. Water or air supply valve 130 and the water or air opening and closing valve (1) connected to one side of the support pipe 150 to inject or block the water or air into the hole 40 40 and the repair material supply pipe 100, the hardener supply pipe 110, the repair material / hardener opening and closing valve 120, water or air supply pipe 130, water or air opening and closing valve 140 is connected and fixed On the other side of the repair material supply pipe 100, the nipple 160 connecting the packer 200 and the support tube 150 is detachably connected to the support tube 150, and can be assembled and separated from the packer 200. The nipple 160 is fixed to the screw coupling to be connected to the support tube 150, the packer 200 is fixed to the nipple 160 in a removable type, the nipple 160 and the packer 200 Disposed between the nipples 160 and the packer 200 by the operation of the nipples 160 and the packer 200 while a portion of the packer 200 penetrates the fixing groove 174, Flat blowout preventing means 170 in close contact with the wall surface to prevent the repair material and the curing agent from being ejected into the gap by the injection pressure Characterized in that it comprises a.

At this time, the blowout preventing means 170 is to be in close contact with the wall surface while the cushion pad 172 having a predetermined buffering force, and the cushion pad 172 in close contact with the cushion pad 172 to be in close contact with the wall surface. A part of the mill 171 and the packer 200 is inserted into the nipple 160 is characterized in that it is composed of a fixing groove 174 to be a firm fixing.

And the crack site repair construction method using the packer assembly for repairing the crack site of the concrete structure,

Hole drilling step (S100) for drilling by using a drill around the gap is generated cracks, water or air on-off valve 140 in the state of inserting the packer 200, the end of the packer assembly (P) in the hole In the state of inserting the packer 200, the end of the packer assembly (P) after the fine powder removal step (S200) to remove the fine powder generated in the drilling process by removing the fine powder generated inside the hole Open the repair material / hardener open / close valve 120 to inject the repair material and the hardener into the hole 40 at the same time, so that the repair material and the hardener are not ejected into the adjacent gap when the repair material and the hardener are injected. Repairing material / hardener injection step (S300) for injecting in a state in which the ejection blocking means 170 in close contact with the wall, and when the drying after the injection of the repairing material / hardener, to finish the surface of the crack site It characterized by comprising a closed treatment step (S400).

Packer assembly for repairing cracked site of the concrete structure of the present invention having the characteristics as described above and the method of repairing cracked site using the same can remove the fine powder generated in the drilling process together with the drilling at the work site where the cracking site repair is made and When the repair material / hardener is injected according to the removal of fine powder, the adhesion to existing concrete can be improved to ensure a long life, and the unreasonableness of the repair can be eliminated by blocking the detachment of the repair material in advance. It can be effective.

1 is a front configuration diagram showing a conventional packer assembly for crack site repair

2 is a front configuration view showing a preferred embodiment of the present invention

Figure 3 is a front configuration view showing another embodiment of the present invention

4 is a use state diagram schematically showing a shape in which the spray preventing means of the present invention is disposed;

Figure 5 is a use state showing a preferred embodiment of the present invention

Figure 6 is a block diagram of the maintenance process of an embodiment of the present invention

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

First, the repair portion packer assembly for repairing cracked portions of the concrete structure provided by the present invention, as shown in Figure 2, the repair material supply pipe is supplied to any one of the repair materials selected from urethane, silicone, foam resin, mortar ( 100) is configured.

One side of the repair material is provided with a curing agent supply pipe 110 is supplied at the same time as the repair material and the curing agent for curing the selected repair material.

The repair material supply pipe 100 and the curing agent supply pipe 110 is connected to a dedicated injector, and is injected at the same time through the support pipe 150, which is a tube just before the final injection, the dilution rate can be arbitrarily adjusted by the user .

The maintenance material / hardener opening and closing valve 120 is configured to control the injection amount of the repair material and the curing agent injected through the repair material supply pipe 100 and the curing agent supply pipe 110, and to open and close.

In addition, the water or air supply pipe 130 is connected to one side of the support pipe 150 is supplied with water or air so that the fine powder generated in the hole during the drilling process can be removed using water or air do.

That is, either water or air may be selectively connected to be used for removing the fine powder, or may be used alternately.

In addition, the water or air opening and closing valve 140 is connected and fixed to one side of the support tube 150 to block or inject the water or air into the hole 40.

In addition, the repair material supply pipe 100, the hardener supply pipe 110, repair material / hardener opening and closing valve 120, water or air supply pipe 130, water or air opening and closing valve 140 is connected and fixed at the same time In the other direction of the supply pipe 100, the support pipe 150 is connected to be fixed so that the nipple 160 for connecting the packer 200 and the support pipe 150 is detachable.

In addition, the end of the support tube 150 is fixed to the nipple 160 is fixed to the screw coupling to be assembled and detachable with the packer 200, the packer 200 is fixed to the nipple 160 in a removable connection type do.

In addition, the packer 200 is composed of a screw coupling between the rubber tube 190 and the nipple 160 is made of a single body, as shown in Figure 2 connect the expansion tube 180 according to the depth of the hole to be drilled Alternatively, as shown in FIG. 3, the expansion pipe 180 may be connected without a state.

Although not shown in the drawing, the inside of the rubber tube 190 is configured with a small tube (not shown) that can be screwed in. When the nipple 160 is rotated, the repair material is injected into the hole while the rubber tube 190 expands. Is configured to prevent backflow.

In addition, the nipple 160 and the packer 200 may be operated between the nipple 160 and the packer 200 by manipulating the nipple 160 and the packer 200 while a portion of the packer 200 penetrates the fixing groove 174. While being fixed between the 200, the plate-shaped ejection preventing means 170 is in close contact with the wall surface to prevent the repair material and the hardener from being ejected into the gap by the injection pressure, the shaft insertion connection.

The blowout preventing means 170 is to be in close contact with the wall surface while the cushion pad 172 having a predetermined buffering force, and the cushion pad 172 in close contact with the cushion pad 172 to be in close contact with the wall surface A part of the contact plate 171 and the packer 200 is inserted into the nipple 160 and the fixing groove 174 to be fixed firmly.

The cushion pad 172 may use a soft rubber with excellent adhesion to the wall surface, the sealing plate 171 for bringing the cushion pad 172 in close contact with the wall, the pushing force is transmitted to the cushion pad 172 to inject the repair material Is preferably made of metal and non-ferrous metal so as not to be ejected through the gap (20).

And the crack site repair construction method using the packer assembly for repairing the crack site of the concrete structure, first, drilled the hole around the gap where the crack occurred (S100.

The hole 40 can punch a plurality of pieces around the gap 40, and when the hole drilling process is completed, water or air in the state in which the packer 200, which is the end of the packer assembly P, is inserted into the hole. Opening the valve 140 to remove the fine powder generated in the drilling process (S200).

If possible, the fine powder can be minimized by using primary water to remove scattering dust, and when it is removed to some extent, air can be injected to remove residual fine dust.

After removing the fine powder generated in the hole after the packer 200, which is the end of the packer assembly (P) is inserted into the repair material / hardener opening and closing valve 120 to open the repair material and the curing agent into the hole (40) While injecting at the same time, the injection preventing means 170 of the packer coupling body (P) in close contact with the wall so as not to eject the repair material and the hardener in the adjacent gap when injecting the repair material and the curing agent is injected in the state of blocking the ejection (S300) .

When it is difficult to completely adhere to the wall surface before the injection of the repair material and the curing agent 170, the surface may be selectively ground using a grinder.

And as a final step, after the injection of the water-retaining material / hardener is dried, the surface of the cracked portion is finished by finishing (S400).

In this case, finishing will include cleaning the surface from filling the perforated holes.

Claims

In the repair packer assembly,

The support tube 150 is provided with a curing agent or water or air which is supplied at the same time as any one of the urethane, silicone, foamed resin, mortar, or the repairing material to cure the selected repairing material. One end of 150) is supplied with a repair material supply pipe 100 is supplied with any one of the repair material selected from urethane, silicone, foam resin, mortar, and a curing agent that is supplied simultaneously with the repair material to cure the selected repair material. The hardener supply pipe 110 is fastened and fastened so that the repair material and the hardener may move through one support pipe 150, and the repair material is between the support pipe 150 and the repair material supply pipe 100 and the hardener supply pipe 110. Repair material / hardener opening and closing valve 120 is coupled and fixed so as to inject or block the curing agent into the hole 40, the perforated on one side of the support pipe 150 Water or air supply pipe 130 is connected to the water or air supply so as to remove the fine powder generated inside the hole by using water or air to inject or block water or air into the hole 40. Water or air opening and closing valve 140 is fixed to one side of the support pipe 150 so that the other side of the repair material supply pipe 100 and the hardener supply pipe 110 is fixed and connected to the nipple 160, Packer ( 200 is screwed and fixed to assemble and detachable, the nipple 160, the rubber tube 190 to prevent the backflow of the repair material injected into the hole to expand the circumference during the rotation operation of the nipple 160 and The packer 200 coupled to the expansion tube 180 connected to the rubber tube 190 is fixed in a removable type according to the depth of the hole, and the rubber tube 190 or the expansion tube of the nipple 160 and the packer 200 is fixed. Close to the wall between the 180 Fixing the flat blowout preventing means 170 for blocking the repair material and the hardener to be ejected into the gap by the injection pressure, the fixing of the blowout preventing means 170 is a washer around the blowout preventing means (170) 173 is configured to be symmetrically inserted into one side of the nipple 160 and the rubber tube 190, and then a portion of the packer 200 penetrates through the fixing groove 174 of the blowout preventing means 170. And a blowout preventing means 170 is fixed between the nipple 160 and the packer 200 by a screw operation of the packer 200, while the blowout preventing means 170 is in close contact with the wall surface while being in airtight contact. A portion of the cushion pad 172 having a predetermined buffering force, a contact plate 171 and a packer 200 which are in close contact with the cushion pad 172 and the wall of the cushion pad 172 are inserted into the nipple ( 160) and the fixing groove 174 to be a solid fixing characterized in that Maintenance packer assemblies for cracks in concrete structures.
In repairing the crack site by using the packer assembly (P) of claim 1,

Hole drilling step (S100) for drilling by using a drill around the gap is generated cracks;

The fine powder removal step (S200) of removing the fine powder generated in the drilling process by opening the water or air opening and closing valve 140 in the state of inserting the packer 200, the end of the packer assembly (P) in the hole (S200) ;

After removing the fine powder generated in the hole after the packer 200, which is the end of the packer assembly (P) is inserted into the repair material / hardener opening and closing valve 120 to open the repair material and the curing agent into the hole (40) At the same time, injecting the repair material and hardener, the repair material / hardener injected in a state in which the ejection preventing means 170 of the packer coupling body (P) is in close contact with the wall so as to prevent the repair material and the hardener from being ejected into adjacent gaps. Injection step (S300);

After the injection of the repair material / hardener is dried, the finishing treatment step of finishing the surface of the crack site (S400);

Crack site repair construction method using a packer assembly for crack site repair of a concrete structure, characterized in that consisting of.