KR101725392B1 - Multi-packer for repairing crack or backside water barrier and method for repairing concrete structure using thereof - Google Patents

Abstract

The present invention relates to a multi-packer for repairing cracks or a backside water barrier and a method for repairing a concrete structure using the same. The purpose of the present invention is to provide the common multi-packer for repairing the cracks or the backside water barrier and the method for repairing the concrete structure using the same capable of capable of supplying a differential-liquid repairing solution after uniformly mixing the differential-liquid repairing solution with a screw inserted therein while supplying the differential-liquid repairing solution at a low pressure or a high pressure depending on a degree of the cracks of the concrete structure. A configuration of the present invention includes: a packer body wherein a compressing unit and a repairing solution transferring pipe are integrally formed; an injection pipe or an extended injection pipe joined to the packer body and inserted into an insertion hole formed in a concrete surface to supply the repairing solution to the cracks or a damaged part of the backside water barrier; the screw inserted into the repairing solution transferring pipe of the packer body; a ball positioned in a rear end of the screw and blocking one end of a nipple in case of a backflow of the repairing solution; and the nipple having one end coupled to the other end of the solution transferring pipe and the other end wherein a repairing solution supply pipe is inserted. The multi-packer for repairing the cracks or the backside water barrier made of an injection-molded synthetic resin material and capable of being applied to cases in various crack degrees and repairing solution supply pressures and the method for repairing the concrete structure using the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-packer for repairing a crack or a backside order, and a repair method of a concrete structure using the multi-

The present invention relates to a multi-packer for repairing a crack or a backside line, and a repair method for a concrete structure using the same. More specifically, the present invention can continuously supply high pressure or low pressure maintenance fluid for crack repair or backside repair of a concrete structure, The present invention relates to a packer for repairing a crack or a backside line having a function of mixing a supplied two-pack type repair liquid and a maintenance method using the same.

Concrete mixed with cement, aggregate and admixture is economical and semi-permanent, and has been used for a long time in construction and civil engineering materials.

However, such a concrete may cause large and small cracks due to various factors such as drying shrinkage, temperature change and leakage over time after the construction, which may hinder the safety of the structure.

When such a crack occurs, it is reinforced or repaired depending on the damage and degree of damage. Reinforced works are scraping damaged areas and cracking reinforced concrete areas with reinforcing materials and mortar if there are severe cracks that are exposed to rebar and corrosion. There is no problem in urgent structural safety, It is the construction method to repair if internal and external damages such as cracks occur.

A typical method of repairing cracks generated on the surface of the concrete structure is a method of injecting a repair fluid. This method is a method of repairing a repair fluid by injecting a repair fluid into a crack at a low pressure using a construction syringe, There is a method of injecting the repair liquid at a high pressure using a packer.

Reference will now be made to the disclosure of Korean Patent Registration No. 10-0367676, which discloses a typical concrete crack repairing method mentioned above.

A method for repairing a repair fluid by injecting a repair fluid into a crack using a construction syringe at low pressure is provided with a construction syringe including a compression plate, a body, a piston, a piston ring, and an elastic member, A method of inserting a tip of a syringe main body into a compression plate and then using a resilient member which presses the piston, the repair fluid is slowly injected into the crack gap while the piston is pressed.

The structure of the packer for injecting the repair fluid at high pressure using the repair packer is shown in Fig. 7, which is a screw connection part formed with a screw on a cylindrical outer circumferential surface and through which the repair fluid injection passage is passed, And a connecting portion connected to the hose of the maintenance fluid injector and screwed to the other end of the screw coupling portion, wherein the coupling portion is connected to the tip of the screw coupling portion and the head portion And a check valve composed of a spring and a ball inserted therein to connect the maintenance fluid injector to the connection portion to inject the repair fluid into the cracked portion at a high pressure in a short time. When the injection is completed, the injector is protruded from the surface of the concrete structure The connecting portion is hammered with a hammer or the like, cut at the groove portion, It is a method of repairing with a finishing material in place.

However, the above-mentioned conventional crack repairing methods do not use a general repairing device, so that a maintenance worker selects and installs a proper repairing device among construction syringes or packers having different repair fluid pressures according to a crack repairing site, There is a drawback that the versatility is poor,

In addition, there is a problem in that the quality of the remedies supplied to the cracks may be deteriorated because there is no way to mix the remedies supplied in the two-pack form into the syringe or the packer,

Particularly, in the method of repairing infiltration of a repair fluid into a cracked portion at low pressure using the construction syringe, a repairing fluid adhering to the surface of the concrete must be installed so that the repair fluid is not visible, And the repairing liquid is injected at a low pressure by using the elastic member of the syringe, the entire construction period is prolonged, and the maintenance liquid supplied at a low pressure is hard to reach the microcrack portion, and the repair fluid hardens in the middle It is difficult to repair the entire crack area because it can be discarded. Moreover, when the liquid to be supplied to the cracked region is additionally required in the form of a syringe, it is not possible to easily replenish the repair liquid. Structural problems that re-injection is difficult There.

In addition, the method using the packer is advantageous in that it can continuously supply the high-pressure repair fluid and can supply the high-pressure crack to the micro crack region. However, since the packing tool for inserting the packing formed in the concrete is relatively large in comparison with the packer diameter If the hole is deep and the diameter is relatively large, it may be installed at a place other than the crack due to the construction error when inserting the packer, so that the repair quality of the crack may be bad, Also, since the packing material is mainly made of a metal material, the processing cost is high and the weight is heavy, so that it is difficult to install the packing material on the ceiling.

In addition, the conventional packer requires a process of cutting and removing external force to the flange and nipple protruding out of the surface of the concrete structure after the construction, so that if the impact is poor, the perforated part may be widened or leakage may occur, The packing shrinkage rate of the packing material due to the temperature change due to the bonding of the denting materials at the interface between the concrete and the repair fluid or concrete can be varied to provide a starting point of cracking and a deterioration of the padding of the metal material left in the concrete There is a problem.

On the other hand, since tunnel structures are mainly used to construct concrete structures after excavation, the concrete structures always come into contact with soil, gravel, and rocks after construction, so that when cracks are formed or spaces are formed in the back surface of the concrete structure, The waterproof ability is deteriorated. Accordingly, in order to repair the backing layer, conventionally, a repair liquid is injected using a crack repairing packer having the above structure. In addition, in order to repair the backside order, it is necessary to form an inserting hole penetrating the concrete structure. Packers having the same structure as the conventional structure have a disadvantage in that the length of the inserting tube for injecting is short, .

Korean Registered Patent Publication No. 10-0367676 (December 27, 2002) Korean Patent Registration No. 10-0458992 (November 19, 2004) Korean Registered Patent Publication No. 10-1093733 (Dec. 07, 2011) Korean Patent Registration No. 10-0596694 (Jun. 27, 2006)

In order to solve the above problems, an object of the present invention is to provide a two-pack type remedial solution by continuously supplying a two-component remedial solution at a low pressure or a high pressure in accordance with the degree of damage to a cracked portion or a back- Which is capable of uniformly mixing and supplying a uniformly mixed crack or a back side order repair packer and a repair method using the same.

Another object of the present invention is to provide a concrete pipe structure in which cracks or deeper depths of a concrete structure are deeply deeper at the time of repairing by providing an extension pipe connected to the front end of the packer, And a repairing method using the packer for repairing a crack or a backside line formed by arranging a plurality of nozzles around the screw.

It is a further object of the present invention to provide a method of replacing an extension pipe of various lengths according to the depth of a crack in a concrete structure, And a repair method using the same. The present invention also provides a repair method using the same.

Another object of the present invention is to provide a packer main body which is made of synthetic resin material of a nonmetallic material and has a simple internal structure and is low in cost and light in weight, Since the packers can be easily separated by removing the fastened screws or pieces, the problems of corrosion and cracking are significantly reduced since only a small amount of by-products are left in the concrete. Thus, crackers or backside repair packers having excellent workability and repair methods using the packers .

According to an aspect of the present invention, there is provided a packer comprising: a packer body integrally formed with a pressing portion and a maintenance fluid transfer pipe;

An injection pipe or an extension injection pipe inserted into the insertion hole formed on the concrete surface so as to be connected to the packer main body to supply the maintenance liquid to the cracked portion or the backside damaged portion;

A screw inserted into the repair fluid transfer tube of the packer main body to mix the two-component repair fluid;

A ball located at a rear end of the screw and blocking one end of the nipple when the maintenance liquid flows backward;

And a nipple having one end connected to the other end of the maintenance fluid transfer pipe and the other end fitted to the repair fluid supply pipe, and configured to be applied to various crack sites and a repair fluid supply pressure, Cracking or back side order maintenance of the multi-packer.

According to a preferred embodiment of the present invention, the packer body is formed with a flat pressing portion formed with a plurality of fastening holes through which the fastening means passes so as to be in surface contact with the concrete surface, and is formed in a direction orthogonal to the pressing portion, And a maintenance fluid transfer pipe in which a hollow portion is formed can be integrally formed.

According to a preferred embodiment of the present invention, the hollow portion may be formed so as to be inclined so that the cross section of the hollow portion decreases toward the concrete surface side from the entrance where the remedial fluid flows, thereby preventing the screw and the ball from being separated.

In a preferred embodiment, each of the hollows on both sides of the maintenance fluid transfer pipe is provided with a helical portion, and the hollow pipe may be screwed to the one side injection pipe and the other side nipple.

In a preferred embodiment, the elongated injection tube is formed to be longer than the injection tube so as to be inserted into a crack portion deeper than the injection tube. The elongated injection tube is tapered to have a smaller inner diameter and an outer diameter at the other end, A plurality of injection ports arranged in the periphery may be formed by perforating.

In a preferred embodiment, the elongated injection tube can be constructed by inserting a cut-off screw for re-mixing the two-component remediation liquid therein.

In a preferred embodiment, the cut-off screw may be configured such that a cut-out groove is formed in the repeated unit connection portion between unit screws having non-continuous screw blades and cut to a required length.

The present invention also provides, in another embodiment,

a) forming an inserting hole according to a depth of a damaged area after the damage of the cracked portion or the backside portion of the concrete structure;

b) preparing the multi-packer;

c) selecting an injection tube or an extension injection tube according to the depth of the insertion hole and screwing it with the body of the packer;

d) pressing and attaching to the concrete surface with fastening means or an adhesive material penetrating through the fastening holes formed in the fastening portions of the packer main body;

(e) connecting a maintenance liquid supply pipe to a nipple screwed with the maintenance fluid transfer pipe of the packer main body to supply a two-component remedial fluid at a required pressure in accordance with the crack or the damage to the backside damage;

f) injecting the supplied two-liquid type remedying liquid into the concrete crack or backside damaged area while mixing with a screw in the remediation transfer pipe;

g) When the repair fluid is filled in the crack or the backside damage area and the pressure is increased, the screw installed in the repair fluid transfer pipe pushes the ball to block the supply of the repair fluid supplied to the nipple;

and a step of removing the packer main body when the fluidity of the repair fluid is reduced or dried after the step (h) is completed.

According to a preferred embodiment, in the step f), when the extension tube is fastened to the body of the packer according to the damage inspection of the crack site or the back side order portion, the cut tube is inserted into the extension tube at a necessary length, Liquid type remediation liquid may be mixed and injected.

In a preferred embodiment, the step h) includes separating the repair fluid transfer pipe and the injection pipe or the extension injection pipe by rotating the packer main body after removing the fastening means or the adhesive material for closely contacting the concrete surface with the concrete surface, The tube or extension injection tube may be cut and closed.

In a preferred embodiment, the step d) may further include the step of pressing and mounting a sealing member having a surface, which has an elastic force, between the pressing part and the concrete surface, if necessary.

In a preferred embodiment, the step a) may further include the step of applying a sealing material to the cracked portion after the insertion hole has been formed, if there is a crack in the peripheral portion where the insertion hole is to be formed according to the irradiation of the cracked portion of the concrete structure.

According to the present invention having the above-described features, it is possible to selectively supply a two-pack type remedial solution to a high-pressure or low-pressure continuous supply by using a general single packer according to the cracks of the concrete structure or the degree of damage to the rear- It is advantageous in construction that it can be applied to cracks of all concrete structures or repair of the underground water layer by preparing only one type of packer without preparing a syringe or a packer separately,

In addition, when the two-component repair fluid is injected through the packer, the screw inserted into the packer can be rotated and mixed with the maintenance fluid to be injected in a more uniform state, thereby improving the quality of repairing cracks or back-

In addition, it is advantageous in that, when repairing a crack in a concrete structure or a deeper damage depth of the backside water column, the extension pipe having a plurality of injection holes formed at the front of the packer may be joined to extend the length,

In addition, by mixing the supplied two-liquid type remedies by inserting a screw into the extended injection tube, it is possible to supply uniform remedies while preventing hardening,

In addition, according to the crack of concrete structure or depth of deformation of the backside water column, various lengths of extension pipe are used in the field, and a cutting screw is provided to conveniently cut the length of the screw according to the size of the extension pipe. The advantage of increased workability,

In addition, since the material of the packer is made of a synthetic resin material of a nonmetallic material and the internal structure is simple, the manufacturing cost is low and the weight is light,

Also, if there is little or no fluidity of the repair fluid after repairing the crack or backside repair, the packer can be easily removed by rotating the body of the packer by removing screws or pieces fastened without being hit on the concrete surface, Therefore, it is a useful invention having an advantage of being excellent in workability because the problem of corrosion and cracking is remarkably reduced.

1 is a perspective view showing a packer according to an embodiment of the present invention,
2 is a perspective view of another side of the packer according to one embodiment of the present invention,
3 is an exploded perspective view showing a configuration of a packer according to an embodiment of the present invention,
4 is a perspective view showing a packer according to another embodiment of the present invention,
5 is a cross-sectional view illustrating a concrete crack repairing method using a packer according to an embodiment of the present invention.
6 is a cross-sectional view illustrating a concrete crack repairing method using a packer according to another embodiment of the present invention.
7 is a cross-sectional view illustrating a conventional packer structure and a concrete crack repairing method using the same.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, in the description of the present invention, the term "low pressure" or "high pressure" refers to a relative expression, not a pressure with an absolute value as a boundary. In the conventional crack repairing method, the syringe and the elastic member such as a spring, When the pressure applied to the supplied two-liquid type remedial fluid is referred to as low pressure, the pressure when the two-liquid type remedial fluid is supplied through the packer through the pressure transfer device such as a liquid pump is referred to as relatively high pressure. Therefore, the present invention does not refer to a low pressure or a high pressure based on a specific numerical value.

FIG. 1 is a perspective view showing a packer according to an embodiment of the present invention, FIG. 2 is a perspective view of another side of a packer according to an embodiment of the present invention, and FIG. Fig.

As shown in the drawings, the structure of the present invention includes a packer main body 1 integrally formed with a pressing portion 11 and a maintenance liquid transfer pipe 12; An injection pipe (2a) or an extension injection pipe (2b) inserted into the insertion hole formed on the concrete surface so as to be connected to the packer main body (1) to supply the maintenance liquid to the cracked or back side damaged area; A screw (3) inserted into the inside of the repair fluid transfer pipe (12) of the packer main body (1) to mix the two - liquid type repair fluid; A ball 4 positioned at a rear end of the screw 3 and closing one end of the nipple when the maintenance liquid flows backward; And a nipple 5 having one end connected to the other end of the maintenance fluid transfer pipe 12 and the other end being fitted with a repair fluid supply pipe.

Accordingly, the packer according to the present invention having the above-described structure can be used for repairing a cracked portion of a concrete structure, and can be used for repairing a cracked portion of a concrete structure, such as a tunnel structure, It can also be used for maintenance of the underground water level where concrete is penetrated to repair the backside aquifer with cracks or space.

The packer main body 1 is formed with a pressed portion 11 in the form of a surface in contact with the concrete surface 500 and formed in a direction orthogonal to the central portion of the pressed portion 11 and has a hollow portion 121 ) Are integrally formed to constitute a uniform pressing force and a maintenance liquid injection. The press portion 11 and the maintenance liquid transfer pipe 12 are manufactured by integrally injection molding a synthetic resin material that is lighter than a metal material. When the packer main body 1 is integrally injection-molded as described above, it is light in weight and excellent in workability, and the manufacturing is simple, mass production is possible, and manufacturing cost is low.

 The crimping portion 11 is formed of a circular plate or a polygonal face plate so as to be attached to the concrete surface 500 and uniformly squeezed, and is formed by arranging a plurality of fastening holes 111 passing through the plane. When a known fastening means such as a screw, a bolt, or a piece is put on the concrete surface 500 through the fastening hole, the crimped portion adheres to the concrete surface 500 at the time of crack repairing work to provide a watertight function and prevent the water from leaking .

If necessary, a seal member having a surface elasticity is provided between the pressed part and the concrete surface, and the watertight function is further enhanced by pressing.

Meanwhile, in place of the known fastening means, the press-bonding portion can be pressed using an adhesive having a strong adhesive force and a water-tight force. In this case, the adhesive can be applied without a separate sealing member.

The hollow portion 121 of the maintenance fluid transfer pipe 12 is formed so that the cross section of the hollow portion 121 of the maintenance fluid transfer pipe 12 decreases toward the concrete surface side from the entrance where the repair fluid flows, so that the screw 3 and the ball 4 are separated toward the insertion hole formed in the concrete .

The repair fluid transfer pipe 12 is provided with spiral portions 122a and 122b having threads at both ends of the hollow portion 121 so that the one end side spiral portion 122a at the side of the compression portion 11 is connected to the injection pipe 2a And is screwed to the spiral portion 51 formed around one end of the nipple 5 at the other end-side helical portion 122b. The packer body 1 can be easily removed from the concrete surface 500 without any other mechanism after the installation by having a structure that is screwed to the injection pipe 2a or the extension pipe 2b to be described later.

The injection pipe (2a) is formed with a spiral part (21) formed at one end thereof so as to be threadedly inserted into a spiral part (122a) formed in a hollow part at one end of the maintenance fluid transfer pipe (12). By having such a screw fastening structure, it is possible to easily separate and fasten.

One end of the nipple 5 to be screwed with the maintenance fluid transfer pipe 12 is inclined so that the central portion of the distal end portion protrudes more than the peripheral circumference so as to prevent leakage of the repair fluid upon contact with the ball 4, A hollow portion 52 is formed through the nipple 5 in the longitudinal direction. A polygonal bolt head 53 is formed around the nipple 5 so that the male screw formed at the tip end is engaged with the female thread of the spiral portion 122b formed at the other end hollow portion 121 of the maintenance liquid transfer pipe 12, .

The ball 4 is formed to be slightly smaller than the inner diameter of the maintenance fluid transfer pipe 12 so as to be easily movable left and right. When the nipple 5 is in contact with the nipple 5, Diameter.

The screw 3 is made of a synthetic resin material and rotates in one direction inside the repair fluid transfer pipe 12 due to the pressure of the repair fluid that strikes the spiral wing when the repair fluid of low pressure or high pressure is supplied through the nipple 5. By rotating in this manner, a rotating agitating force is applied to the supplied remedial fluid to mix the two-fluid remedial fluid with a more uniform remedial fluid.

Also, when the repair fluid is continuously supplied even after the repair fluid is filled in the cracks of the concrete, the pressure of the repair fluid filled in the cracks increases and the screw 3 is pushed in the direction opposite to the repair fluid supply direction. When the skewer is pushed, the ball 4 comes into contact with the ball 4 and presses the ball 4 so as to close the central portion of the nipple 5. When the central portion of the nipple 5 is clogged with the balls 4 pushed by the screw 3, the backflow of the remedied fluid is prevented, and no further maintenance fluid is supplied. If the maintenance liquid is not injected any more, the pressure of the portion where the maintenance liquid is supplied becomes high. In this case, when the supply of the two-liquid type repair liquid supplied from the outside through the nipple 5 is interrupted by the operation of the operator or the automatic control panel, .

If it is determined that the liquid level of the liquid is lowered due to the curing of the liquid filled in the cracked portion after a certain period of time after the liquid level is stopped or the liquid is dried, the pieces or screws fixing the packer body 1 to the concrete surface are removed. Thereafter, the packer main body 1 which is in contact with the concrete surface 500 may be removed. At this time, when the packer main body 1 is rotated, the portion screwed with the injection tube 2a is easily separated and removed. Also, if the projecting portion of the injection tube 2a is to be removed, the injection tube 2a made of a synthetic resin material is simply removed with a blade to clean the concrete surface 500. When the projecting site of the injection tube 2a is completed, the construction is completed.

4 is a perspective view showing a packer according to another embodiment of the present invention.

The basic structure of the illustrated packer is identical to that of the packer according to the embodiment of the invention disclosed in figures 1 to 3 except that the injection tube 2a having a short length is inserted into the extension tube (2b).

The elongated injection pipe 2b may be replaced by replacing the elongated injection pipe 2b having various lengths according to the cracks of the concrete structure or the depth of the damaged portion of the backside wall.

The extended injection pipe 2b is formed with a threaded portion 21 formed at one end thereof so as to be threadedly engaged with the threaded portion formed in the maintenance fluid transfer tube 12, The inner diameter and the outer diameter become smaller toward the other side of the insertion hole formed in the concrete crack region or the backside damage region. The reason for this structure is to prevent the cut-off screw 6 inserted into the extended injection tube 2b from being pulled toward the cracked portion by the pressure of the supplied repair liquid.

Particularly, according to the present invention, by providing the cut-off screw 6 in the extension injection pipe 2b, the two-liquid type repair liquid supplied through the repair liquid transfer pipe 12 can be mixed again to supply a uniform repair liquid while preventing hardening .

Also, the cut-off screw 6 is constructed so that the length of the screw inserted therein can be easily cut by a necessary length according to the size of the extended injection pipe 2b, so that the cut screw 6 can be used in the field, For this purpose, the cut-off screw (6) forms a cut-out groove (61) structure in the unit connection part between unit screws having a non-continuous screw blade during injection molding to force the operator to tear or rotate the cut- It can be easily cut by using a simple mechanism such as knife or the like, and can be adjusted to a required length, thereby greatly improving the workability.

In addition, the extended injection pipe (2b) is formed by punching a plurality of injection holes (22) arranged in a circumferential direction so that a deep portion of the crack structure of the concrete structure is deeply and uniformly injected into various cracks. As a result, the quality of repairing cracks is improved.

5 and 6, a crack repairing method using a packer according to the present invention will be described. FIG. 5 is a cross-sectional view illustrating a concrete crack repairing method using a packer according to an embodiment of the present invention, and FIG. 6 is a cross-sectional view illustrating a concrete crack repairing method using a packer according to another embodiment of the present invention.

First, a packer main body 1 integrally formed with a pressurizing portion 11 and a maintenance liquid transfer pipe 12 according to the present invention; An injection pipe (2a) or an extension injection pipe (2b) inserted into the insertion hole formed on the concrete surface so as to be connected to the packer main body (1) to supply the maintenance liquid to the cracked or back side damaged area; A synthetic resin material screw 3 which is inserted into the inside of the water pipe 12 of the packer main body 1 to mix the two-liquid type repair fluid; A ball 4 positioned at a rear end of the screw 3 and closing one end of the nipple 5 when the maintenance liquid flows backward; And a nipple (5) having one end connected to the other end of the maintenance fluid transfer pipe (12) and the other end end fitted with a repair fluid supply pipe.

In this case, although the penetration hole is not shown in FIG. 6, if a crack occurs on the back surface of the concrete structure formed on the back of the concrete structure, such as a tunnel structure, where the circumference of the concrete structure is in contact with soil, gravel, rock, or the like, The insertion hole penetrating the concrete is drilled.

After that, clean the cracks and investigate the degree of damage of cracks or backing. The investigation will determine the width, depth, etc. of cracked or backside damaged areas. Accordingly, it is determined whether to use the basic injection tube 2a or the extension tube 2b of the present invention. However, the packers used without regard to the investigation of cracks or backside damage sites use a single crack repair multi-packer according to the present invention. Therefore, it is unnecessary to select whether to use a repair syringe or a packer as in the prior art.

Thereafter, a step of puncturing the insertion hole 501 into which the injection tube 2a or the extension injection tube 2b is to be inserted is provided at the crack or backside damage region. The drilling can be done with a tool such as a general hammer drill. In this case, if there is a crack in the peripheral portion where the insertion hole 501 is formed when the crack 502 is irradiated, the sealant is finally applied to the crack in a state where the vibration stops after the penetration, . It is sufficient to apply a waterproof sealing material such as a general waterproof epoxy or a known waterproof sealing material.

The selected injection tube 2a or extension injection tube 2b is screwed into the spiral part of the maintenance fluid transfer tube 12 located at the tip end of the center of the packer body 1 on the side of the compression part 11. At this time, the inside of the repair fluid transfer pipe 12 of the packer main body 1 is in a state of being screwed and coupled with the spiral portion 51 located at the tip end of the nipple 5 in a state of inserting the skew 3 and the ball 4 to be. At this time, if the polygonal bolt head 53 formed around the nipple 5 when the screw is fastened is used, the nipple 5 can be easily fastened without any mechanism.

Thereafter, the injection pipe 2a or the extension injection pipe 2b coupled to the packer main body is inserted into the insertion hole 61 formed by piercing the concrete wall, and the compression part 11 of the packer main body 1 is closely contacted with the bolt, A fastening means such as a screw or a piece is inserted through a plurality of fastening holes 111 formed in the periphery of the crimping portion 11 and is attached to the concrete surface so that the crimping portion 11 is in surface contact. At this time, if necessary, an elastic sealing member (not shown) having a watertight function can be installed between the concrete surface 500 and the compression plate, and then installed together.

At this time, the crimping plate can be pressed and attached by using an adhesive having a strong adhesive force and a water tightness instead of a fastening means such as a known bolt, screw or piece.

Thereafter, a maintenance liquid transfer pipe (12) forming the packer main body (1) is poured into a maintenance liquid pipe (not shown) to which a two-liquid repair liquid is supplied and supplied. The supply pressure may be supplied at various pressures from a low pressure to a high pressure. For example, the pressure of the liquid supply pump or the compressor may be varied between 0.1 and 1000 kg / cm 2. Of course, these pressures will vary as needed and are not limiting. It is important, however, that the present invention uses a single single packer for all pressures, from low pressure to high pressure. This is because it is not used in the conventional crack repairing method. The synthetic resin material used in the present invention may be any known synthetic resin material capable of coping with such a degree of pressure.

When the maintenance liquid is supplied, when the maintenance liquid that has been pushed through the ball 4 inside the maintenance liquid transfer pipe 12 hits the spiral wing of the screw 3 while passing through the screw 3, the screw 3 is not fixed, And mixing the inflowed remedies while rotating. Since the two-component remedial solution is not mixed yet, it can be supplied in a sufficiently mixed state when it is supplied to the cracked region. The rotation of the screw 3 may vary according to the adjustment of the pitch of the screw 3 in the design of the mold for injection molding, and may vary depending on the supply pressure of the supplied repair fluid.

The two-component repair fluid mixed in the maintenance fluid transfer pipe 12 is filled in the cracked portion after passing through the injection pipe 2a and is repaired.

If the extension pipe 2b is not connected to the general type injection pipe 2a, the first mixed solution is passed through the cut-off screw 6 provided inside the extension pipe 2b, After the secondary mixing, the cracks are filled in multiple through the injection port formed at the end and the periphery of the extension injection pipe 2b.

If the maintenance fluid is continuously supplied even after it is fully charged in the space of the crack or backside damage area, the pressure of the maintenance fluid filled in the crack or backside damaged area becomes high and the screw (3) installed in the maintenance fluid transfer pipe (12) In the opposite direction. Thereafter, when the skewer is pushed, the ball 4 comes into contact with the ball 4 and presses the ball 4 to close the central portion of the nipple 5. When the central portion of the nipple 5 is clogged with the balls 4 pushed by the screw 3, the backflow of the remedied fluid is prevented, and no further maintenance fluid is supplied. If the maintenance liquid is not injected any more, the pressure of the portion where the maintenance liquid is supplied becomes high. In this case, when the supply of the two-liquid type repair liquid supplied from the outside through the nipple 5 is interrupted by the operation of the operator or the automatic control panel, .

If it is judged that the maintenance liquid filled in the cracked portion has hardened due to a certain period of time after the maintenance liquid is stopped and the fluidity is lowered or it is determined that the liquid is dried, the pieces or screws or the adhesive material fixing the packer main body 1 to the concrete surface are removed The packer main body 1 which is in contact with the concrete surface 500 may be removed. At this time, when the packer main body 1 is rotated, the portion screwed with the injection tube 2a is easily separated and removed.

Also, if the protruding portion of the injection tube 2a is to be removed, the injection tube 2a made of a synthetic resin material is simply removed by a blade, so that the surface of the concrete is cleanly cleaned. When the projecting site of the injection tube 2a is completed, the construction is completed.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(1): Packer main body (2a): Injection pipe
(21): Spiral portion (2b): Extension injection tube
(3): Screw (4): Ball
(5): Nipple (6): Cutting screw
(11): Compressed portion (12): Maintenance liquid transfer pipe
(22): injection port (51): spiral part
(52): hollow portion (53): bolt head
(61): cutting groove (111): fastening hole
(121): hollow portion (122a, 122b): spiral portion
(500): Concrete surface (501): Insertion hole
(502): crack region

Claims (12)

A packer body integrally molded with a press-bonding portion and a maintenance liquid transfer pipe;
An extension injection pipe of various lengths inserted into the insertion hole formed on the concrete surface so as to be supplied to the packer main body according to the depth of the damage site of the crack or the back side;
A screw that is inserted into the maintenance fluid transfer tube of the packer main body so as not to be fixed and rotates in one direction inside the maintenance fluid transfer pipe due to the pressure of the maintenance fluid that strikes the spiral wing to mix the two-
A ball located at a rear end of the screw and blocking one end of the nipple when the maintenance liquid flows backward;
And a nipple having one end connected to the other end of the maintenance fluid transfer pipe and the other end having a repair fluid supply pipe inserted therein. The nipple is formed of an injection-molded synthetic resin material,
Wherein the extended injection pipe is formed in accordance with a depth of a crack and is formed by sloping the inner diameter and the outer diameter of the injection pipe so that the inner diameter and the outer diameter become smaller toward the other end from the one end coupled with the repair fluid transfer pipe,
The cut-out screw is inserted into the cut-out screw, and the cut-out screw is formed in the cut-out screw, and the cut-out screw is formed in the cut- Of the multi-packer for repairing cracks or back side order.
The method according to claim 1,
Wherein the packer main body is formed with a flat pressing portion formed with a plurality of fastening holes through which the fastening means passes so as to be in surface contact with the concrete surface and is formed in a direction orthogonal to the pressing portion, Wherein the tube is integrally formed with the tube.
The method of claim 2,
Wherein the hollow portion is formed so as to be inclined so as to have a smaller cross-sectional area in the direction toward the concrete surface from the inlet through which the repair fluid flows, so that the screw and the ball are separated from each other.
delete delete delete delete a) forming an insertion hole according to the depth of the damaged area after irradiation of the cracked or backside damaged area of the concrete structure;
b) preparing a multi-packer according to any one of claims 1 to 3;
c) selecting an extension tube according to the depth of the insertion hole and screwing it with the packer body;
d) pressing and attaching to the concrete surface with fastening means or an adhesive material penetrating through the fastening holes formed in the fastening portions of the packer main body;
(e) connecting a maintenance liquid supply pipe to a nipple screwed with the maintenance fluid transfer pipe of the packer main body to supply a two-component remedial fluid at a required pressure in accordance with the crack or the damage to the backside damage;
f) injecting the supplied two-liquid type remedying liquid into the concrete crack or backside damaged area while mixing with a screw in the remediation conveyance pipe;
g) When the repair fluid is filled in the crack or the backside damage area and the pressure is increased, the screw installed in the repair fluid transfer pipe pushes the ball to block the supply of the repair fluid supplied to the nipple;
h) removing the packer main body when the fluidity of the maintenance liquid is reduced or dried,
In the step f), when the extension tube is fastened to the body of the packer according to the damage inspection of the crack site or the back side order portion, the two-component type maintenance liquid is mixed again using the cut- The method for repairing a concrete structure using a multi-packer according to claim 1,
delete The method of claim 8,
The step (h) includes a step of removing the fastening means or the adhesive for tightly contacting the packer main body with the concrete surface, rotating the maintenance liquid transfer pipe and the extension injection pipe by rotating them, and cutting the extension injection pipe protruding from the concrete surface The method for repairing a concrete structure using a multi-packer for repairing a crack or a backside line.
The method of claim 8,
Wherein the step d) further comprises the step of providing a sealing member having a surface in the form of an elastic force between the pressed part and the concrete surface, if necessary, and pressing the same to repair the concrete structure using the multi- .
The method of claim 8,
Wherein the step a) further comprises a step of applying a sealing material to the cracked portion after the insertion hole is formed if there is a crack in the peripheral portion where the insertion hole is to be formed according to the irradiation of the cracked portion of the concrete structure. Repair of Concrete Structures Using Multi Packers.

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