KR20000049634A - A epoxy resin pouring apparatus for mending a crack of concrete structures - Google Patents

Abstract

PURPOSE: An injection device of resin for repairing and reinforcing a crack of a concrete structure is provided to improve construction efficiency by making easy the injection of resin to the crack of the concrete structure. CONSTITUTION: An insertion part of a resin storing container(140) is inserted to a resin inducing hole of a guide member(120). A check valve(130) is fixed to an aperture of the guide member. A discharge hole of a sealing gun is pushed into a through hole(130a) having closed bottom face of the check valve to be inserted to the guide member. An epoxy(resin) injection device is driven to inject the resin to the guide member. If the resin is injected to the resin storing container or the guide member in a certain pressure, the discharge hole of the sealing gun is pulled out of the check valve to stop the injection of resin to the resin storing container or the guide member.

Description

Resin injection device for repairing and reinforcing cracks in concrete structures {A EPOXY RESIN POURING APPARATUS FOR MENDING A CRACK OF CONCRETE STRUCTURES}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin injection device for repairing and reinforcing cracks in a concrete structure capable of injecting a resin mixed with epoxy resin A and an epoxy resin B (hardener) at cracks of a concrete structure at its own pressure.

Conventionally, as an apparatus for injecting an epoxy waterproofing solution into a crack to repair a crack of a concrete structure, the present applicant filed a utility model registration (application number; No. 90-13621) on August 31, 1990. There is a Korean Utility Model Publication No. 93-677 published on the 19th of January.

The disposable cement paste injector disclosed in the Utility Model Bulletin, that is, an epoxy resin injecting device for injecting epoxy resin into a crack to repair a crack of a concrete structure, has a rectangular seat 4 as shown in FIG. 1. And an injection guide plate (1) having an injection guide tube (5) formed with a through hole (6), a syringe-like injection body (2), and an elongated coil spring (3).

In addition, the injection guide plate (1) has a pair of spring engaging portion (7) for hanging both ends of the elongated coil spring (3) on the rear side of the rectangular seat plate portion (4), the syringe-like injection body (2) Is provided with a conical injection nozzle (8) inserted into the through hole (6) formed in the injection guide pipe (5), and the other end is a cylinder (10) having an open end (9), and the cylinder (10). Piston 11, which slides in the inside, and one end is covered with the piston 11 is fixed, and the lower end includes a piston rod 12 having a cross section formed with a spring support groove 14 on the outside, the long Both ends of the coil spring (3) are releasably fixed to each spring engaging portion (7) of the injection guide plate (1), the central portion of which is formed on the disc (13) at the rear end side of the piston (12) It is comprised so that it may be supported by the spring support groove 14.

In order to repair the cracked part of the concrete using the epoxy resin injection device for crack repair of the conventional concrete structure configured as described above, first, the rectangular seat plate 4 is bonded to the cracked part using an adhesive or the like, and then a specific time ( After about 24 hours has elapsed, the cylinder 10 into which the epoxy resin (resin mixed with epoxy A and epoxy B) is injected into the through hole 6 formed in the injection guide tube 5 of the rectangular seat plate portion 4. The conical injection nozzle (8).

Next, the both ends of the elongated coil springs 3 are hooked to the spring latches 7 and 7 respectively formed in the rectangular seat plate 4, and then the middle portions of the elongated coil springs 3 are pulled out to form a piston rod 12. When supported in the support groove 14 formed to traverse in the radial direction on the disk 13 of the (), the piston rod 12 is conical injection nozzle (8) in the cylinder 10 by the contracting force of the long coil spring (3) It is pushed to the side.

At this time, the piston 11 coupled to the distal end of the piston rod 12 pushes the epoxy resin injected into the cylinder 10 toward the conical injection nozzle 8 and is injected into the crack of the concrete structure. As the injected epoxy resin cures, the cracking site can be reinforced or repaired.

However, the epoxy resin injection device used to repair the cracks of the conventional concrete structure configured as described above is an injection guide plate (1) having an injection guide tube and a spring engaging portion (7) having a through hole (6), injection nozzle It is composed of a cylinder 10 having a (8) and a syringe-like injection body (2) having a piston rod (12) mounted with a piston (11) at the tip, and a coil spring (3) made of metal. In addition, if the epoxy resin mixed with epoxy A and epoxy B (or hardener) injected into the cylinder 10 is not used before a specific time (time for curing the hardener) has elapsed, the epoxy resin is cured. Since it cannot be used, the epoxy resin injection device and the epoxy resin injected into the epoxy resin injection device have to be disposed of, and thus there are various problems such as an increase in construction cost.

In addition, the conventional epoxy resin injection device is composed of a rubber piston, a metal coil spring and a syringe-shaped injection body (2) of synthetic resin material and the injection induction pipe (1) of the synthetic resin material to recycle the epoxy resin injection device, Since rubber, metals and synthetic resins have to be decomposed and recycled, there is a problem that a lot of labor costs are used to recycle.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to inject resin into a crack portion of a concrete structure to easily inject a resin for repairing or reinforcing a crack portion of a concrete structure which can improve workability. To provide a device.

Another object of the present invention to provide a resin injection device for repairing and reinforcing cracks of a concrete structure that can reduce the construction cost.

It is still another object of the present invention to provide a resin injection device for repairing and reinforcing cracks in a concrete structure, which has a simple structure and can reduce manufacturing cogs.

In order to achieve the above object, the present invention provides a support member having a seat plate on which a plurality of through holes are formed to be attached to the crack surface of the concrete structure, and a support on which a resin injection hole is formed at the same time as extending vertically from the center of the seat plate. An insertion part inserted into the resin injection hole formed in the support of the support member is formed at the tip portion, and an opening is formed at the proximal end side, and at the same time, a guide member for guiding the flow of the resin in which the resin induction hole is formed at the side, and the opening of the guide member. Resin storage for storing the resin introduced through the check valve is formed integrally with the check valve is formed in the resin guide hole formed on the side of the guide member and the check valve is formed in the outer circumferential surface at a predetermined interval so that the insertion is fixed It is characterized by consisting of a container.

1 is an exploded perspective view showing an exploded view of a conventional epoxy resin injector used to repair a crack of a concrete structure;

Figure 2 is a perspective view schematically showing a resin injection device for repairing and reinforcing cracks of a concrete structure according to an embodiment of the present invention,

3 is a longitudinal cross-sectional view of FIG.

4 is an exploded perspective view of FIG. 2;

5 is a perspective view showing a state of repairing / reinforcing a ceiling of a concrete structure using a resin injection device for repairing and reinforcing a crack part of a concrete structure according to an embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

102: seat stand 102a: through hole

102b: Central through hole 104: Support stand

104a: resin injection hole 106: boss

110: support member 110a: resin injection hole

112: inserting portion 112a: through hole

114: opening 116: resin induction

120: guide member 130: check valve

132: round flange 140: resin storage container

140a: graduation 142: insertion portion

142a: through-hole 150: ceiling

152: crack

Hereinafter, a resin injection apparatus for repairing and reinforcing cracks of a concrete structure according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view schematically showing a resin injection device for repairing and reinforcing cracks of a concrete structure according to an embodiment of the present invention, Figure 3 is a longitudinal sectional view of Figure 2, Figure 4 is an exploded perspective view of Figure 2 5 is a perspective view showing a state of repairing and reinforcing the ceiling of a concrete structure using a resin injection device for repairing and reinforcing a crack part of a concrete structure according to an embodiment of the present invention.

2 and 5, the resin injection device for repairing and reinforcing cracks of a concrete structure according to an embodiment of the present invention, the support member 110 is attached to the crack surface of the concrete structure, and the support The guide member 120 is inserted into the resin injection hole 104a formed in the member 110 to guide the flow of the resin, and the insertion fixing into the opening 114 of the guide member 120 includes a check valve 130 and the It is composed of a resin storage container 140 is fixed in the resin induction hole 116 formed in the guide member 120 to store the resin introduced through the check valve 130.

The support member 110 is a seat plate 102 having a plurality of through holes 102a formed to be attached to the surface of the crack portion of the concrete structure, and the resin is injected in the center at the same time as extending vertically from the center portion of the seat plate 102 It consists of the support stand 104 in which the ball 104a was formed.

In addition, the support member 110 has a circular boss portion 106 around the central through hole 102b so that the central through hole 102b is not blocked by the adhesive on the opposite seat plate 102 on which the support 104 is formed. Formed.

The guide member 120 has an insertion portion 112 formed at the distal end thereof so as to be inserted into the resin injection hole 104a formed in the support 104 of the support member 110, and an opening 114 at the proximal end thereof. ) Is formed, and the resin induction hole 116 is formed in the side part. In addition, the insertion part 112 of the guide member 120 includes a part of the resin (resin remaining without being stored in the resin storage container 140) and the resin storage container 140 introduced through the check valve 130. The through hole 112a is formed to discharge the discharged resin into the crack portion of the concrete structure.

The check valve 130 has a circular flange 132 is formed at a predetermined interval on the outer circumferential surface so as to be inserted into the opening 114 of the guide member 120, and the guide member 120 in the resin storage container 140. Resin is inserted into the resin induction hole 116 formed in the side of the insertion portion 142 is integrally formed, the resin is introduced through the check valve 130 to the insertion portion 142 of the storage container 140 The through hole 142a is formed so as to be introduced to store the oil and discharge the stored resin into the concrete crack portion.

The insertion part 142 of the resin storage container 140 is introduced to store the resin introduced through the check valve 130 and at the same time, the through hole 142a to discharge the stored resin to the concrete cracking part. And a portion of the resin (resin remaining without being stored in the resin storage container 140) and the resin storage container which are formed in the insertion part 112 of the guide member 120 through the check valve 130. The through hole 112a is formed to discharge the resin discharged from the 140 to the crack portion of the concrete structure.

In addition, the scale 140a at regular intervals on the outer circumferential surface of the resin storage container 140 so as to confirm that the resin stored in the resin storage container 140 is injected into the crack portion of the concrete structure by the expansion force of the compressed air. ) Is engraved.

The check valve 130 is preferably made of natural rubber, artificial rubber, silicon or synthetic resin material.

Next, the operation and effects of the resin injection device for repairing and reinforcing the crack part of the concrete structure according to the embodiment of the present invention configured as described above will be described.

First, the insertion part 142 of the resin storage container 140 is inserted into the resin induction hole 116 of the guide member 120, and the check valve 130 is inserted into the opening 114 of the guide member 120. Fix it.

At this time, in the concave groove 134 formed between the two flanges 132 formed on the outer circumferential surface of the check valve 130, the click 114a formed around the opening 114 of the guide member 120 is cut out and the check is made. The valve 130 and the guide member 120 are firmly coupled.

As such, the check valve 130 and the guide member 120 are firmly coupled, and the foreign substances adhering to the crack surface of the concrete structure are scraped cleanly with a wire brush, and then the seat plate of the support member 110. (102) After applying the adhesive on the back surface, the central through-hole 102b formed in the seat plate 102 of the support member 110 is attached to the cracked portion of the concrete structure to match. At this time, since the circular boss portion 106 is formed around the central through hole 102b formed in the seat plate stand 102 of the support member 110, the central through hole 102b is not blocked by the adhesive.

After attaching to match the central through hole 102b formed on the back plate seat 102 of the support member 110, the back plate seat 102 of the support member 110 is firmly attached to the crack of the concrete structure When the time elapses, the insertion portion 112 of the guide member 120 to which the resin storage container 140 and the check valve 130 are coupled is coupled into the resin injection hole 104a formed in the support member 110.

Next, the discharge hole of the sealing gun (not shown) is inserted into the through hole (130a) with the bottom surface formed in the check valve 130 inserted into the guide member 120, and then the epoxy (resin) injection device (not shown) is inserted. Drive to inject the resin into the guide member 120 (for the sealing gun and the epoxy (resin) injection device, Korean Patent Publication No. 2000-12271 published on March 6, 2000 (Invention) Name; epoxy resin injection device for crack repair of concrete structures), and thus a detailed description thereof will be omitted).

At this time, a part of the resin injected into the guide member 120 is a through hole 112a formed in the insertion part 112 of the guide member 120, and a resin injection hole formed in the support 104 of the support member 11 ( Through the central through hole (102b) formed in the 104a) and the seat plate (102b) is injected into the crack of the concrete structure, the other part of the resin induction hole 116 formed on the side of the guide member 120, the insertion portion 142 The air is stored in the resin storage container 140 while compressing the air in the resin storage container 140 through the through hole 142a formed in the upper surface of the resin storage container 140.

In this way, when resin is injected into the resin storage container 140 and the guide member 120 at a constant pressure, the discharge hole of the sealing gun is extracted from the check valve 130, and the resin storage container 140 and the guide member ( The injection of resin into the 120 is stopped.

At this time, the resin stored while compressing the air in the resin storage container 140 is injected into the crack formed in the concrete structure by the expansion force of the compressed air, the pressure of the resin injected into the crack portion of the concrete structure and the resin storage container ( The resin is injected into the crack of the concrete structure until the pressure of the resin stored in 140 is equal.

Whether the resin stored in the resin storage container 140 is injected into the crack of the concrete structure can be known by checking that the resin is reduced while looking at the scale 140a engraved on the outer circumferential surface of the resin storage container 140. .

When the resin injected into the crack portion of the concrete structure is cured, the resin injection / reinforcement device for repairing / reinforcing the concrete structure of the present invention is collected to be removed and recycled from the crack portion of the concrete structure, thereby completing the repair / reinforcement work of the concrete structure. do.

Therefore, the resin injection device for repair / reinforcement of the concrete structure according to the present invention is all components except the check valve 130, that is, the support member 110, the guide member 120 and the resin storage container 140 are all synthetic resin It is made of polyethylene and can be easily regenerated simply by removing the check valve 130, and is more easily regenerated by using silicone rubber for the check valve 130.

In the above description, when the resin stored in the resin storage container 140 decreases the volume of the gas at a predetermined temperature, the pressure is increased by an integral multiple in inverse proportion to the volume, and into the crack portion of the concrete structure by Boyle's law. Is injected.

In other words, the volume of the resin storage container 140 is constant, and the time of injecting the resin into the resin storage container 140 and the time of discharging the resin stored in the resin storage container 140 into concrete are substantially the same. Therefore, when the temperature for injecting the resin into the resin storage container 140 and the temperature when discharging the resin stored in the resin storage container 140 to the concrete is considered to be constant, the storage in the resin storage container 140 When the resin is injected into the resin storage container 140, the resin is injected while compressing the air, so that the resin stored in the resin storage container 140 by the expansion force of the compressed air into the crack portion of the concrete structure. Is injected.

The resin storage container of the resin injection device for repairing and reinforcing the crack part of the concrete structure according to the present invention when the resin is injected into the crack part of the concrete structure formed on the ceiling, as shown in FIG. 5, the scale of the resin storage container 140. Where the portion (140a) is formed so as to face the ceiling, when the resin is injected into the cracks of the concrete structure formed on the floor, as shown in Figure 2 the portion where the scale (140a) of the resin storage container 140 is formed This should be located facing the bottom.

In addition, the resin storage container of the resin injection device for repairing and reinforcing the crack part of the concrete structure of the present invention is coupled to the resin induction hole 116 of the guide member 120 when the resin is injected into the crack part of the concrete structure formed on the wall. The resin storage container 140 may be positioned to face upward.

As described above, according to the resin injection device for repairing and reinforcing the crack part of the concrete structure according to the present invention, the resin is injected at the same time as it extends vertically from the center part of the seat plate in which a plurality of through holes are formed to be attached to the crack part surface of the concrete structure. A support member having a support with a ball formed therein, a guide member inserted into a resin injection hole formed in the support of the support member and having a resin induction hole formed at a side thereof to guide the flow of resin, and inserted into and fixed to an opening of the guide member. It consists of a check valve with a circular flange protruding at a predetermined interval, and a resin storage container for storing the resin introduced through the check valve is formed integrally with the insert is inserted into the resin guide hole formed on the side of the guide member. Resin for cracks in concrete structures The same time and can be injected it is possible to improve the workability, it is possible to reduce the sigongbi, also has an excellent effect that the structure can be simple, and reduce the manufacturing costs.

Claims (3)

A seat plate 102 having a plurality of through holes 102a formed to be attached to a crack surface of a concrete structure, and a support having a resin injection hole 104a formed at the center thereof while extending vertically from the center of the seat plate 102. A support member 110 having a 104 and an insertion portion 112 to be inserted into the resin injection hole 104a formed in the support 104 of the support member 110 are formed at the distal end portion, and the opening 114 is formed at the proximal end side. At the same time, the guide member 120 for guiding the flow of the resin in which the resin induction hole 116 is formed at the side, and the circular circumference with a predetermined interval on the outer circumferential surface to be inserted into the opening 114 of the guide member 120 The check valve 130 protruding from the flange 132 and the insertion part 142 inserted into and fixed in the resin induction hole 116 formed on the side of the guide member 120 are integrally formed to form the check valve 130. Resin storage container for storing the resin introduced through the 140 Resin injection device for repairing and reinforcing cracks of a concrete structure, characterized in that the structure. According to claim 1, wherein the support member 110 has a circular boss portion 106 is formed on the opposite seat plate 102, the support 104 is formed so that the central through-hole 102b is not blocked by the adhesive. Resin injection device for repairing and reinforcing cracks in concrete structures. The method of claim 1, wherein the insertion portion 142 of the resin storage container 140 is introduced to store the resin introduced through the check valve 130, and at the same time to discharge the stored resin to the concrete crack portion. Through holes 142a are formed so that the resin discharged from some resin and the resin storage container 140 introduced through the check valve 130 may be inserted into the insertion part 112 of the guide member 120. A resin injection device for repairing and reinforcing cracks in a concrete structure, wherein a through hole 112a is formed to be discharged to the cracks of the structure.