KR20210066421A - Concrete crack repair apparatus and method - Google Patents

Abstract

A concrete crack repair apparatus and a method thereof are disclosed. According to an embodiment of the present invention, a concrete crack repair apparatus for providing support to a repair material applied to a cracked area of a concrete structure may comprise: a support member having a predetermined area and disposed at the cracked area to be integrated with the repair material; and a fixing member penetrating through the support member and fixed to the concrete structure to fix the support member to the concrete structure.

Description

Concrete crack repair apparatus and method {CONCRETE CRACK REPAIR APPARATUS AND METHOD}

The present invention relates to an apparatus and method for repairing cracks in concrete, and more particularly, to an apparatus and method for repairing cracks by being installed in cracks occurring on the surface of a concrete structure.

Many structures such as exterior walls of buildings, bridges, and conduits are made of concrete. Concrete structures undergo external forces, erosion, etc. over time, which may cause cracks on the surface of the concrete structures. If cracks occurring in the concrete structure are left unattended, the penetration of moisture into the cracks, freezing, etc. may proceed, and the cracks may expand and the safety of the concrete structure deteriorates.

Conventionally, in order to repair cracks in concrete structures, a method of preventing the expansion of cracks by applying a repair material made of resin or the like to the cracked part to prevent moisture from penetrating into the fungal part has been generally used. .

However, in the construction method of simply applying the repair material to the cracks in concrete, the repair effect is not great because the repair material is easily peeled off after construction. In addition, if the cracks in the concrete structure are deep or wide, it is practically difficult to properly repair them.

In order to solve this problem, a technology to increase the anchoring power of the repair material using fiber reinforcement and studs has been introduced. The fact that it takes a lot of manpower and time and the efficiency of construction is low is pointed out as a big problem.

Korean Patent No. 10-0628948 "Method for repairing dry cracks in concrete structures", 2006.09.27 Announcement

SUMMARY OF THE INVENTION The present invention is to solve the problems of the prior art, and an object of the present invention is to provide a concrete crack repair apparatus and method for firmly and effectively repairing concrete cracks.

Another object of the present invention is to provide an apparatus and method for repairing cracks in concrete that can be effectively repaired even when cracks in concrete are relatively deep or wide.

Objects of the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to one aspect of the present invention, there is provided a concrete crack repair device for providing support to a repair material applied to a cracked portion of a concrete structure, a support member having a predetermined area and disposed at the cracked portion to be integrated with the repair material, and the support member There is provided a concrete crack repair apparatus including a fixing member that penetrates through and is fixed to the concrete structure to fix the support member to the concrete structure.

In this case, the support member may be formed in a plate shape.

In addition, the support member may be formed in a polygonal or circular shape.

In addition, the support member may include one or more lobes protruding laterally.

In addition, the support member may include two or more through-holes formed in the vertical direction for penetrating arrangement of the fixing member.

In addition, the fixing member may include a pin-shaped body portion arranged side by side spaced apart at least a portion of which is fixed to the concrete structure, and a head portion disposed to connect the upper end of the body portion.

In addition, the concrete crack repair apparatus may further include a reinforcing member made of one or more length members and fixed to the cracked area by the support member and the fixing member in a state in which a tensile force is applied.

In addition, the support member may include a first portion formed to surround at least a portion of the circumference of the reinforcing member, and a second portion having a predetermined area and connected to the first portion and through which the fixing member passes. .

Also, the first portion may cross in a cross shape.

In addition, the concrete crack repair apparatus may further include an adjustment member disposed between the support member and the fixing member when the fixing member is fixed to adjust the insertion depth of the fixing member, but is removed after fixing the fixing member. .

In addition, the fixing member includes a head and a body portion having a cross-sectional area smaller than that of the head on one side of the head and connected to a predetermined length, at least a portion of which is fixed in the concrete structure, wherein the adjusting member includes a predetermined It is formed to have a thickness that can pass through the body, but has a cross-sectional area that cannot pass through the head and may include a penetrating portion formed in the vertical direction.

In addition, the concrete crack repair apparatus may further include a spacer member disposed between the support member and the fixing member to adjust the insertion depth of the fixing member.

In addition, the fixing member includes a head and a body part connected to a predetermined length having a cross-sectional area smaller than that of the head on one side of the head and at least a portion of which is fixed in the concrete structure, and the spacer member includes a predetermined length. It is formed to have a thickness that can pass through the body, but has a cross-sectional area that cannot pass through the head and may include a penetrating portion formed in the vertical direction.

In addition, the spacer member may include a fixing part on which the reinforcing member is wound or seated.

In addition, the fixing part may be formed of a groove formed on the side of the spacer member.

In addition, the fixing part may be made of a hook coupled to the side of the spacer.

In addition, it may further include an auxiliary spacer member having a penetrating portion communicating with the penetrating portion of the spacer member and being stacked above or below the spacer member.

On the other hand, according to another aspect of the present invention, there is provided a concrete crack repair method for repairing the cracked part by applying a repair material to the cracked part of a concrete structure, comprising: fixing the concrete crack repair device by placing and fixing the concrete crack repairing device on the cracked part; There is provided a concrete crack repair method comprising an application step of applying the repair material to the cracked area and a curing step of hardening the applied repair material.

According to the concrete crack repair apparatus and method of the present invention, it is made of one or more length members capable of introducing a tensile force, and a reinforcing member disposed in a cracked part of a concrete structure surrounds at least a part of its circumference and a supporting member disposed in the cracked part Through this, coupling with the fixing member can be made easily, and the efficiency of construction is improved.

In addition, according to the concrete crack repair apparatus and method of the present invention, repair can be performed effectively even when the crack site of concrete is relatively deep or wide.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a view showing the construction of a concrete crack repair apparatus according to a first embodiment of the present invention.
Figure 2 is a perspective view of the support member and the fixing member of the concrete crack repair apparatus according to the first embodiment of the present invention.
3 is a perspective view of the reinforcement member of the concrete crack repair apparatus according to the first embodiment of the present invention.
4 is a view showing a construction cross-section of the concrete crack repair apparatus according to the first embodiment of the present invention.
5 is a view showing modified examples of the support member of the concrete crack repair apparatus according to the first embodiment of the present invention.
6 is a view showing the construction of the concrete crack repair apparatus according to the second embodiment of the present invention.
7 is a view showing the construction of the concrete crack repair apparatus according to the third embodiment of the present invention.
8 is a perspective view of a support member of a concrete crack repair apparatus according to a third embodiment of the present invention.
9 is a view showing a construction cross-section of a concrete crack repair apparatus according to a third embodiment of the present invention.
10 is a view showing the construction of the concrete crack repair apparatus according to the fourth embodiment of the present invention.
11 is a perspective view of a support member of a concrete crack repair apparatus according to a fourth embodiment of the present invention.
12 is a perspective view of an adjustment member that may be additionally included in the concrete crack repair apparatus according to embodiments of the present invention.
13 is a perspective view of a spacer that may be additionally included in the concrete crack repair apparatus according to embodiments of the present invention.
14 is a perspective view of a modified example of a spacer that may be additionally included in the concrete crack repair apparatus according to embodiments of the present invention.
15 is a view showing a construction cross-section made through an embodiment in which a spacer member is additionally included in the concrete crack repair apparatus according to the third embodiment of the present invention.
16 is a perspective view of an auxiliary spacer that may be additionally included in the concrete crack repair apparatus according to embodiments of the present invention.
17 is a flowchart of a concrete crack repair method according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention, parts irrelevant to the description are omitted from the drawings, and the same reference numerals are assigned to the same or similar components throughout the specification.

In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the possibility of addition or existence of numbers, steps, operations, components, parts, or combinations thereof.

1 is a view showing the construction of a concrete crack repair apparatus according to a first embodiment of the present invention. In addition, FIG. 2 is a perspective view of a support member and a fixing member of the apparatus for repairing cracks in concrete according to the first embodiment of the present invention, and FIG. 3 is a perspective view of the reinforcement member of the apparatus for repairing cracks in concrete according to the first embodiment of the present invention. . On the other hand, Figure 4 is a view showing a construction cross section of the concrete crack repair apparatus according to the first embodiment of the present invention.

1 to 4 , the concrete crack repair apparatus according to the first embodiment of the present invention provides support to the repair material 40 applied to the crack area 110 of the concrete structure 100 . The concrete crack repair apparatus according to the first embodiment of the present invention includes a support member 10 , a fixing member 20 and a reinforcing member 30 .

The support member 10 has a predetermined area and is disposed on the cracked portion 110 to be integrated with the repair material 40 . The repair material 40 is applied to the cracked area 110 to fill the cracked area 110 . The support member 10 is formed to have a predetermined area so that the repair material 40 is removed from the surface of the concrete structure 100 . prevents peeling. The support member 10 is impregnated with the repair material 40 , and may be integrated with the repair material 40 according to the hardening of the repair material 40 .

The support member 10 may include the same material as the repair material 40 for effective integration with the repair material 40 . Furthermore, the support member 10 may be made of the same material as the repair material 40 . In other words, since the repair material 40 may be made of a material such as resin, the support member 10 may also be made of a material such as resin.

According to an embodiment of the present invention, the support member 10 has a body 11 that has a predetermined area and is integrated with the repair material 40 , and one or more penetrations formed in the body 11 for insertion of the fixing member 20 . It includes a hole (12). The body 11 provides an area in contact with the repair material 40 . The through hole 12 becomes a passage through which the fixing member 20 is coupled. Specifically, two or more through-holes 12 may be formed by penetrating in the vertical direction of the body 11 for penetrating arrangement of the fixing member 20 .

5 shows modified examples of the support member 10 of the concrete crack repair apparatus according to the first embodiment of the present invention. Referring to FIG. 5 , the support member 10 may be formed in a plate shape. In more detail, the support member 10 may be formed in a circular shape (FIG. 5(a) and (b)) or polygonal shape (FIG. 5(c) and (d)). Also, the support member 10 may include one or more lobes protruding laterally (FIG. 5(c) and (d)). Here, the lobe refers to a relatively protruding portion of the edge portion of the support member 10 . As described above, when the contact area with the repair material 40 is increased as the support member 10 is deformed, the fixing power of the repair material 40 can be improved.

The fixing member 20 penetrates the supporting member 10 and is fixed to the concrete structure 100 to fix the supporting member 10 to the concrete structure 100 . The fixing member 20 may fix the reinforcing member 30 together with the supporting member 10 in a state capable of maintaining the introduced tensile force.

In the first embodiment of the present invention, the fixing member 20 is arranged to connect the upper end of the pin-shaped body portion 21 and the body portion 21 in which at least a portion is fixed to the concrete structure 100 by being spaced apart side by side. and a head 22 which is The fixing member 20 according to the first embodiment of the present invention can provide a stronger pressure to the support member 10 compared to the fixing member made of a straight pin type.

The fixing member 20 may be made of a material capable of satisfying strength and corrosion resistance. For example, the fixing member 20 may be made of metal, synthetic resin, wood, or the like.

The reinforcing member 30 is made of one or more length members, and is fixed to the cracked region 110 by the supporting member 10 and the fixing member 20 in a state in which a tensile force is applied. The reinforcing member 30 may be formed in the form of a string having flexibility. The reinforcing member 30 may be made of a material capable of impregnating the repair material 40 such as fibers. For example, the reinforcing member 30 may include a resin, carbon fiber, or the like.

The reinforcing member 30 may be fixed by being pressed or wound by the support member 10 and the fixing member 20 in a state in which a tensile force is introduced. The tensile force may act as a force for preventing the cracking part 110 from expanding on both sides of the cracking part 110 . That is, the reinforcing member 30 is disposed across both sides of the cracked region 110 to provide a force to prevent expansion of the cracked region 110 . In addition, the reinforcing member 30 may function as a skeleton in the hardened repair material 40 to improve the fixing power of the repair material 40 .

On the other hand, according to the embodiment of the present invention, the reinforcing member 30 is easily fixed by being pressed by the support member 10 and the fixing member 20 or wound around the supporting member 10 or the fixing member 20 . Therefore, even when the reinforcing member 30 is constituted by overlapping a plurality of length members (for example, when a plurality of carbon fibers having a thin thickness are overlapped), they are fixed at once without the need to twist or attach them in advance. This can be done, and the efficiency of construction can be improved through this.

6 is a view showing the construction of the concrete crack repair apparatus according to the second embodiment of the present invention.

6 , the concrete crack repair apparatus according to the second embodiment of the present invention does not use the reinforcing member 30 as compared with the first embodiment, but through the support member 10 and the fixing member 20 . It provides support to the repair material 40 . In the second embodiment, the support member 10 may be formed in various widths and lengths. In addition, the fixing member 20 is made of a straight pin-shaped member.

The concrete crack repair apparatus according to the second embodiment of the present invention has a suitable shape when the crack area 110 of the concrete structure 100 is not relatively large. Looking in detail, the support member 10 is disposed across the cracked part 110 on both sides of the cracked part 110 , and the fixing member 20 passes through the support member 10 on both sides of the cracked part 110 , By being fixed to the concrete structure 100 , a force to prevent the expansion of the crack area 110 through the support member 10 may be provided.

7 is a view showing the construction of the concrete crack repair apparatus according to the third embodiment of the present invention. 8 is a perspective view of a support member of a concrete crack repair apparatus according to a third embodiment of the present invention. 9 is a view showing a construction cross-section of a concrete crack repair apparatus according to a third embodiment of the present invention.

7 to 9 , the concrete crack repair apparatus according to the third embodiment of the present invention is different from the first embodiment in terms of the shape of the support member 10 . In addition, there is a difference in that the fixing member 20 is made of a straight pin.

In the concrete crack repair apparatus according to the third embodiment of the present invention, the body 11 of the support member 10 has a first portion 111 formed in a shape that surrounds at least a portion of the circumference of the reinforcing member 30 and a predetermined area and a second part 112 connected to the first part 111 and through which the fixing member 20 penetrates.

The first part 111 is formed in a shape surrounding the reinforcing member 30 to stably support the reinforcing member 30 made of a material such as carbon fiber and made of one or more length members. Accordingly, the tensile force introduced to the reinforcing member 30 may be more stably maintained. In addition, the second part 112 has a through hole 12 , and the fixing member 20 provides an area for effectively fixing the supporting member 10 to the concrete structure 100 .

On the other hand, in the third embodiment of the present invention, the fixing member 20 has a cross-sectional area smaller than that of the head 21 on one side of the head 21 and the head 21 and is connected to a predetermined length and at least It includes a body portion 22 , a portion of which is anchored within the concrete structure 100 . The fixing member 20 can stably fix the support member 10 through such a shape.

10 is a view showing the construction of the concrete crack repair apparatus according to the fourth embodiment of the present invention. 11 is a perspective view of a support member of a concrete crack repair apparatus according to a fourth embodiment of the present invention.

10 and 11, the concrete crack repair apparatus according to the fourth embodiment of the present invention is different from the third embodiment in terms of the shape of the support member 10. Specifically, the first portion 111 of the body 11 of the support member 10 is cross-shaped and formed, and the second portion 112 is formed between the first portions 111 .

The support member 10 according to the fourth embodiment is suitable for disposing the reinforcing member 30 on the surface of the concrete structure 100 in the form of a mesh network because the crack site of the concrete structure 100 is relatively wide. In the fourth embodiment, the fixing member 20 may be coupled to only some of the four through holes 12 formed in one support member 10 as necessary.

12 is a perspective view of an adjustment member that may be additionally included in the concrete crack repair apparatus according to embodiments of the present invention.

When the concrete crack repair apparatus according to the embodiments of the present invention is fixed to the surface of the concrete structure 100 , it is sometimes necessary to adjust the insertion depth of the fixing member 20 . For example, when fixing the fixing member 20 to several places of different depths among the cracked areas 110, the height of the fixing members 20 is increased for the effective application of the fixing member 30 or the repair material 40. In the case of matching with each other, a certain portion of the body 22 of the fixing member 20 is exposed and the reinforcement member 30 is wound around the exposed portion to be fixed.

When there is such a need, the adjustment member 50 is disposed between the support member 10 and the fixing member 20 when the fixing member 20 is fixed to adjust the insertion depth of the fixing member 20, but the fixing member ( 20) It is removed after fixing. 12, the control member 50 is formed to a predetermined thickness (h), the body 22 of the fixing member 20 can pass, but the head 21 cannot pass through the cross-sectional area. and having a penetrating portion 51 formed in the vertical direction.

In this case, the thickness of the adjustment member 50 may be changed according to the required insertion depth of the fixing member 20 . That is, a plurality of adjustment members 50 may be provided with various thicknesses. On the other hand, since the adjustment member 50 must be removed after fixing the fixing member 20 , a slit 52 communicating with the outside may be provided on one side of the through part 51 to facilitate removal.

13 is a perspective view of a spacer that may be additionally included in the concrete crack repair apparatus according to embodiments of the present invention. 14 is a perspective view of a modified example of a spacer that may be additionally included in the concrete crack repair apparatus according to embodiments of the present invention. 15 is a view showing a construction cross-section made through an embodiment in which a spacer member is additionally included in the concrete crack repair apparatus according to the third embodiment of the present invention.

As described with respect to the adjustment member 50, when fixing the concrete crack repair apparatus according to the embodiments of the present invention to the surface of the concrete structure 100, when it is necessary to adjust the insertion depth of the fixing member 20 there is At this time, the spacer 60 is disposed between the support member 10 and the fixing member 20 to adjust the insertion depth of the fixing member (20). The spacer member 60 may be distinguished from the adjusting member 50 in that, unlike the adjusting member 50 , it remains without being removed even after the fixing member 20 is inserted.

The spacer member 60 is formed to a predetermined thickness and has a cross-sectional area through which the body 22 of the fixing member 20 can pass but the head 21 cannot pass through and is formed in the vertical direction ( 61) may be provided. In addition, the spacer member 60 may include a fixing part 62 on which the reinforcing member 30 can be wound or seated. In FIG. 13 , the fixing part 62 consists of a groove formed on the side surface of the spacer member 60 , and in FIG. 14 , the fixing part 62 consists of a hook coupled to the side surface of the spacer member 60 . Of course, the shape of the fixing part 62 is not limited by this embodiment, and may have any shape in which the reinforcing member 30 can be seated or fixed.

16 is a perspective view of an auxiliary spacer that may be additionally included in the concrete crack repair apparatus according to embodiments of the present invention.

The thickness of the spacer member 60 may be variously formed as needed, similarly to the adjustment member 50 , but when the spacer member 60 includes the fixing part 62 , the thickness of the spacer member 60 is constant. It may be considered to additionally use an auxiliary spacer member 70 that may be stacked on the spacer member 60 so that the insertion depth of the fixing member 20 can be adjusted as needed.

Referring to FIG. 16 , the auxiliary spacer member 70 has a through portion 71 communicating with the through portion 61 of the spacer member 60 and may be stacked above or below the spacer member 70 . have. At this time, the auxiliary spacer member 70 is formed to have a certain height, it is also possible to adjust the number of the stacked if necessary, it is also possible to consider that the auxiliary spacer member 70 is formed in plurality having various heights.

17 is a flowchart of a concrete crack repair method according to an embodiment of the present invention.

The concrete crack repair method according to an embodiment of the present invention is a method of repairing the cracked region 110 by applying a repair material to the cracked region 110 of the concrete structure 100, and the embodiments of the present invention as described above It can be carried out by a concrete crack repair device according to Referring to FIG. 17 , the concrete crack repair method according to an embodiment of the present invention includes a fixing step (S10), an application step (S20) and a hardening step (S30).

The fixing step ( S10 ) is a step of fixing the concrete crack repair device by placing it in the crack area 110 of the concrete structure 100 . In the fixing step (S10), the concrete crack repair apparatus according to embodiments of the present invention may be fixed to the cracked area 110 . The concrete crack repair device fixed in this step provides a supporting force to the applied and hardened repair material 40 , and provides a force in a direction to block the expansion of the crack area 110 to the concrete structure 100 .

The application step S20 is a step of applying the repair material 40 to the cracked area 110 . The repair material 40 blocks the cracked part 110 from the outside to prevent the progress of erosion, etc., and fills the cracked part 110 . In this case, the repair material 40 may be made of a resin material, mortar, or the like.

The curing step ( S30 ) is a step of curing the applied repair material 40 . Through the hardening step (S30), the concrete crack repair device and the repair material 40 are integrated, and the crack part 110 of the concrete structure 100 is repaired.

Although one embodiment of the present invention has been described, the spirit of the present invention is not limited by the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention will within the scope of the same spirit, Other embodiments may be easily proposed by addition, change, deletion, addition, etc., but this will also fall within the scope of the present invention.

10: support member 20: fixing member
30: reinforcing member 40: repair material

Claims (18)

A concrete crack repair device that provides support to a repair material applied to a crack site of a concrete structure,
a support member having a predetermined area and disposed in the cracked area to be integrated with the repair material; and
Concrete crack repair device including a fixing member penetrating the support member and fixed to the concrete structure to fix the support member to the concrete structure. The method of claim 1,
The support member is a concrete crack repair device made of a plate shape. 3. The method of claim 2,
The support member is a concrete crack repair device made of a polygon or a circle. 3. The method of claim 2,
The support member is a concrete crack repair device including one or more lobes (lobes) formed to protrude laterally. The method of claim 1,
The support member is a concrete crack repair device having two or more through-holes formed in the vertical direction for penetrating arrangement of the fixing member. The method of claim 1,
The fixing member is
A pin-shaped body portion arranged side by side and at least a portion of which is fixed to the concrete structure;
Concrete crack repair device including a head that is arranged to connect the upper end of the body portion. The method of claim 1,
Concrete crack repair apparatus comprising one or more length members, and further comprising a reinforcing member fixed to the cracked area by the support member and the fixing member in a state in which a tensile force is introduced. 8. The method of claim 7,
The support member is
a first portion formed to surround at least a portion of the periphery of the reinforcing member; and
Concrete crack repair apparatus including a second part having a predetermined area and connected to the first part and through which the fixing member penetrates. 9. The method of claim 8,
The first part is a concrete crack repair device that crosses crosswise. 8. The method of claim 7,
Concrete crack repair apparatus further comprising an adjustment member disposed between the support member and the fixing member when the fixing member is fixed to adjust the insertion depth of the fixing member but removed after fixing the fixing member. 11. The method of claim 10,
The fixing member includes a head and a body part connected to a predetermined length with a cross-sectional area smaller than that of the head on one side of the head, at least a portion of which is fixed in the concrete structure,
The control member is formed to a predetermined thickness, the body portion can pass through, but the head portion cannot pass through the cross-sectional area, the concrete crack repair apparatus having a penetrating portion formed in the vertical direction. 8. The method of claim 7,
Concrete crack repair device further comprising a spacer member disposed between the support member and the fixing member to adjust the insertion depth of the fixing member. 13. The method of claim 12,
The fixing member includes a head and a body part connected to a predetermined length with a cross-sectional area smaller than that of the head on one side of the head, at least a portion of which is fixed in the concrete structure,
The spacer member is formed to a predetermined thickness, but the body portion can pass through the concrete crack repair device having a cross-sectional area that does not pass through, and having a penetrating portion formed in the vertical direction. 14. The method of claim 13,
The spacer member is a concrete crack repair device having a fixing part on which the reinforcing member can be wound or seated. 15. The method of claim 14,
The fixing part is a concrete crack repair device made of a groove formed on the side of the spacer. 15. The method of claim 14,
The fixing part is a concrete crack repair device made of a hook coupled to the side of the spacer. 14. The method of claim 13,
Concrete crack repair apparatus further comprising an auxiliary spacer member having a penetrating portion communicating with the penetrating portion of the spacer member and being stacked above or below the spacer member. A concrete crack repair method for repairing the cracked part by applying a repair material to the cracked part of the concrete structure,
A fixing step of fixing the concrete crack repair device according to any one of claims 1 to 17 by arranging it in the crack site;
an application step of applying the repair material to the cracked area; and
A concrete crack repair method comprising a hardening step of hardening the applied repair material.

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