KR102078174B1 - Flexible unit for repairing cracked part of concrete structure and maintenance method of cracked part using the flexible unit - Google Patents

Abstract

In the present invention, in repairing leaks caused by cracks generated on the rooftop or wall of a concrete structure, the human and physical resources can be easily and quickly repaired without having to excavate the surrounding concrete of the cracked area. The present invention relates to a new construction unit for repairing cracked sites of a concrete structure and a method for repairing cracked sites using the new stretchable unit, which can significantly reduce the gap and fill gaps of cracked areas as much as the width of cracked areas after construction.
It is made of soft rubber or urethane or metal material, and has one or more bends 110 to correspond to the width at which the crack is generated, and the elastic force is increased at one or more places laterally by the bends 110. The inner wall surface 31 of the cohesive force with the repair solvent formed in the lower and outer surfaces of the multi-stretching unit 120 and the multi-stretching unit 120 exerted inside the insertion space 30 and the insertion space 30. And an agglomeration portion 130 that improves the adhesive force with the bottom surface 32 in three dimensions.

Description

Flexible unit for repairing cracked part of concrete structure and maintenance method of cracked part using the flexible unit

The present invention relates to a expansion unit for repairing cracks in concrete structures and a method for repairing cracks using the expansion units. More specifically, cracks are generated in repairing leaks caused by cracks generated on the rooftop or wall of a concrete structure. By making it easy and quick to repair without surrounding the surrounding concrete, it is possible to drastically reduce human and material resources and to fill the gap of the crack as much as the width of the crack after the construction. The present invention relates to a expansion unit for repairing cracked sites of concrete structures, and a method for repairing cracked sites using the stretched unit.

In general, new structures constructed of concrete such as houses, multi-family houses, villas, apartments, and officetels may occur on the rooftop of the building, as shown in FIG. 1 (a), and shown in FIG. 1 (b). As shown, cracks 10 occur on the walls of the building.

The crack 10 generated as described above has been identified as a cause of building leakage by increasing the gap 20 more and more over time.

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

In addition, if the cracked part is large, the waterproofing liquid or silicon may be forcedly injected using a packer, and then the finish treatment may be performed. Because it is impossible to inject the waterproofing liquid or silicon by force, it is possible to make a hole around the cracked part and then inject the waterproofing liquid or silicon through the hole to perform waterproofing. Then, the waterproofing solution or silicon was injected into the 'V' shaped grooves for waterproof construction.

As a result, when repairing a part where a crack has occurred, there is a common point of injecting a waterproofing liquid or silicon by drilling a gap 20 or a hole of the crack part. As an example, Patent Application No. 10-2012-0072812 (Name of the invention: waterproofing and repairing the cracked part of the building).

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

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

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

In addition, Patent Registration No. 10-183539 (Applicant's name: Expansion unit for repairing a cracked portion of a concrete structure and a method of repairing a cracked portion using the expansion unit) has a cover type expansion unit. Although a technique for repairing is disclosed, there are disadvantages in that it is difficult to inject an elastic agent when fixing the expansion unit, and the contact between the adhesive part and the existing concrete surface is not strong.

However, the bigger problem is that the part where the crack occurred once is caused by the ground subsidence or the influence of the surrounding environment, and the gap where the crack is generated is gradually expanded. This generated part is likely to cause cracks in the future.

1. Patent application No. 10-2012-0072812 (Invention name: Method of waterproofing and repairing cracked part of building) 2. Patent Registration No. 10-1513077 (Inventive name: gap waterproof spray housing and gap waterproof construction method using the spray housing) 3. Patent registration No. 10-183539 (Invention name: Expansion unit for repairing cracked parts of concrete structure and method of repairing cracked parts using the stretched unit)

Accordingly, the present invention has been conceived to solve the above problems, it is possible to drastically reduce the human and physical resources by allowing easy and rapid repair and construction without excavating the surrounding concrete of the cracked site At the same time, the expansion unit for repairing the cracked part of a concrete structure that can prevent leakage and at the same time reduce the risk of refurbishment by allowing the gap of the cracked part to be filled by the elastic force as much as the gap of the cracked part after the construction. The purpose of the present invention is to provide a method for repairing a cracked site using an expansion unit.

Still another object of the present invention is to prevent the phenomenon of separation from the concrete surface after construction by improving the contact force between the expansion unit and the existing concrete surface.

The expansion unit 100 for repairing the cracked portion of the concrete structure of the present invention for achieving the above object is made of a soft rubber or urethane or metal material, one or more bent portions to correspond to the width of the crack generated And a multi-stretch unit 120 having elastic force exerted at one or more places in the lateral direction by the bent portion 110 and the lower and outer surfaces of the multi-stretch unit 120, and having an insertion space. (30) It is characterized in that the cohesion unit 130 to improve the cohesion force and the adhesive force with the inner wall surface 31 and the bottom surface 32 of the insertion space 30 in three-dimensionally integrally composed of the repair solvent filled in one piece. do.

At this time, the agglomerated portion 130 is formed of any one or two or more selected from the annular 131, 'a' shape 132, 'b' shape 133, 'T' shape (134) It features.

In addition, the crack site repair construction method using the crack site repair expansion unit 100 of the concrete structure may insert the expansion unit 100 in the crack generation direction by using a concrete cutter in the gap 20 where the crack 10 has occurred. Insertion space securing step (S100) to secure the insertion space 30, and the fine powder for removing the fine powder generated in the insertion space securing step by forcing water or air to remove the insertion space secured 20 Removal step (S200), and the repair solvent filling step (S300) for filling the repair solvent 140, including the adhesive and the curing agent components in the insertion space 30, the fine powder is removed and the repair solvent after the repair It is made of soft rubber, urethane, or metal in the slush state where the solvent is not hardened, and has one or more bent portions 110 to correspond to the width where cracks are generated, and by the bent portion 110 Cohesive force and insertion with the multi-stretching unit 120 and the bottom and outer surface of the multi-stretching unit 120 is exerted in one or more places in the sea direction and filled with the repair solvent filled in the insertion space 30 Pressing and expanding the expansion and contraction unit 100, which is formed integrally with the agglomeration unit 130 that improves the adhesive force with the inner wall surface 31 and the bottom surface 32 of the space 30 in the repair solvent 140, the landfill fixing The expansion unit fixing step (S400) and the expansion unit 100 is fixed, the bottom surface 32 and the inner wall surface 31 of the insertion space 30 and the aggregation unit 130 of the expansion unit 100 is firmly fixed. Curing step (S500) to cure to become an adhesive fixed state, and the surface finish treatment step (S600) for cleanly finishing the surface around the repaired after the curing is characterized in that it consists of.

At this time, the repair solvent 140 is characterized in that any one selected from cement, mortar, putty, urethane sealant, silicone sealant containing a curing agent component.

The expansion unit for repairing the cracked portion of the concrete structure of the present invention having the characteristics as described above and the cracked site repair construction method using the stretched unit can be repaired easily and quickly without breaking the surrounding concrete of the cracked site. After construction, even if the crack is opened according to the change of the ground, the gap of the crack can be filled by the elastic force, thereby reducing the risk of renovation and at the same time, blocking the leak continuously. And the adhesion to the existing concrete surface is improved, there is an effect that can be avoided from the risk of repair.

Figure 1 (a) is an illustration showing the cracks generated on the wall of the concrete structure (b) the bottom of the concrete structure.
2 is a perspective view showing a preferred embodiment of the present invention
3 to 5 is a perspective view showing another embodiment of the present invention
Figure 6 is a cross-sectional view of the use state showing a preferred embodiment of the present invention
Figure 7 is a block diagram showing a maintenance process of an embodiment of the present invention

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

First, the expansion unit 100 for repairing the cracked portion of the concrete structure provided by the present invention may be soft rubber or urethane or easy to bend so as to correspond to the cracked portion irregularly generated as shown in FIGS. 2 to 5. It is made of a metal material, and having at least one bent portion 110 to correspond to the width of the crack is generated, and the multi-stretch portion exerts elastic force at one or more places in the lateral direction by the bent portion (110) 120 and the agglomerated portion 130 formed on the lower and outer surfaces of the multi-stretch portion 120 is integrally formed.

As shown in FIGS. 2 to 5, the multi-stretch unit 120 has elasticity in the left and right directions, so when inserting in the initial insertion space 30, the insertion space is inserted when the left and right sides are pinched. The basic fixation is achieved by extending the width of.

In addition, there is an advantage that the flexibility is easy to cope with irregularly generated cracks 10 site due to easy bending, and the workability is good, and the multi-stretching unit 120 having various shapes as shown in FIGS. ) And at the same time can form the aggregation portion 130 accordingly.

In addition, even if the crack 10 occurs on the rooftop or parking lot floor of the building, as well as the road floor and the wall surface, repair is possible, and if the crack is long, two joints may be used.

The agglomerated portion 130 is selectively formed any one or two or more selected from the annular 131, 'a' shape 132, 'b' shape 133, 'T' shape 134, The cohesive force with the repair solvent filled in the insertion space 30 is improved by the agglomeration unit 130, and the adhesion force between the inner wall surface 31 and the bottom surface 32 of the insertion space 30 is lower and lower, Generated in three dimensions on the right side is to strengthen the adhesion.

The crack site repair construction method using the expansion unit 100 for repairing the crack site of the concrete structure will be described below.

First, using the concrete cutter in the gap 20 in which the crack 10 has occurred, secures an insertion space 30 into which the expansion and contraction unit 100 can be inserted in the crack generation direction (S100).

In this case, the width of the insertion space 30 may be 5 to 10mm, and after securing the insertion space 30, it can be seen that the inner wall surface 31 and the bottom surface 32 are formed as shown in FIG. have.

The fine powder generated in the insertion space securing step is secured by inserting water or air into the gap 20 where the insertion space is secured (S200), and then adhered to the inside of the insertion space 30 where the fine powder is removed. Filling the repair solvent 140 containing the curing agent component (S300).

The filler is made of soft rubber or urethane or metal in the slush state in which the repair solvent is not hardened after filling the repair solvent, and is inserted into the gap 20 in which the crack 10 is generated, so as to correspond to the width in which the crack is generated. At least one bent portion 110, the bent portion 110, the elastic portion is exerted at one or more places in the lateral direction by the elastic portion 120 and the lower and outer sides of the multiple elastic portion 120 The agglomeration part 130 is formed integrally to three-dimensionally improve the cohesion force with the repair solvent filled in the insertion space 30 and the adhesive force with the inner wall surface 31 and the bottom surface 32 of the insertion space 30 in one piece. The stretched unit 100 is configured to be pressurized into the repair solvent 140 to be fixed in landfill (S400).

After fixing the expansion unit 100, the bottom surface 32 and the inner wall surface 31 of the insertion space 30 and the agglomeration portion 130 of the expansion unit 100 is cured to be a solid adhesive fixed state (S500) ), The repair method using the expansion and contraction unit 100 is finished by neatly finishing the surface around the repaired and completed after the curing (S600).

The repair solvent 140 may be selectively used by mixing any one or two or more selected from cement, mortar, putty, urethane sealant, silicone sealant containing a curing agent component.

Repairing the expansion unit 100 of the present invention having the characteristics as described above in the gap 20 in which the crack 10 is generated, because the same height as the existing concrete surface has the advantage that the surface is clean after construction In addition, as the gap is opened, the multi-stretching unit 120 is opened so that a certain amount of coping is possible, thereby saving human and physical resources required for maintenance.

Although embodiments of the present invention have been described, those of ordinary skill in the art will appreciate that the present invention may be added, changed, deleted, or added without departing from the spirit of the present invention described in the claims. Various modifications and changes will be possible and will also be included within the scope of the invention.

P: Extension unit
10: crack 20: crevice
30: insertion part 31: inner wall surface
32: bottom 100: expansion unit
110: bend portion 120: multiple expansion and contraction
130: agglomerated portion 131: annular
132: 'b' shaped 133: 'b' shaped
134: 'T'
S100: inserting space
S200: fine powder removal step
S300: Repair Solvent Filling Step
S400: expansion unit fixing step
S500: curing stage
S600: Surface Finishing Steps

Claims (4)

It is made of soft rubber or urethane or metal material, and has one or more bends 110 to correspond to the width at which the crack is generated, and the elastic force is increased at one or more places laterally by the bends 110. The inner wall surface 31 of the cohesive force with the repair solvent formed in the lower and outer surfaces of the multi-stretching unit 120 and the multi-stretching unit 120 exerted inside the insertion space 30 and the insertion space 30. And expansion unit for repairing the cracked portion of the concrete structure, characterized in that the aggregation portion 130 is formed in one piece to improve the adhesive force with the bottom surface (32) in one piece.
The method of claim 1,
The agglomerated portion 130 is selectively formed any one or two or more selected from the annular 131, 'a' shape 132, 'b' shape 133, 'T' shape (134) Expansion unit for repairing cracks in concrete structures.
An insertion space securing step of securing an insertion space 30 into which the expansion unit 100 can be inserted in the crack generation direction by using a concrete cutter in the gap 20 in which the crack 10 is generated (S100); Wow,
A fine powder removal step (S200) of removing the fine powder generated in the insertion space securing step by forcibly injecting water or air into the gap 20 where the insertion space is secured (S200); Wow,
A repair solvent filling step (S300) of filling the repair solvent 140 including an adhesive and a curing agent component in the insertion space 30 in which the fine powder is removed; Wow,
The filler is made of soft rubber or urethane or metal in the slush state in which the repair solvent is not hardened after the repair solvent is filled. 110 and the expansion and contraction force is exerted at one or more places in the lateral direction and formed on the lower and outer surfaces of the multi-stretching portion 120 and the repair solvent filled in the insertion space (30) Pressing the expansion and contraction unit 100, which is formed integrally with the agglomeration unit 130 which improves the cohesion force and the adhesive force between the inner wall surface 31 and the bottom surface 32 of the insertion space 30 into the repair solvent 140. Expansion unit fixing step of fixing the buried (S400); Wow,
Curing step of curing so that the bottom surface 32 and the inner wall surface 31 of the insertion space 30 and the agglomeration portion 130 of the expansion unit 100 is a solid adhesive fixed state after the expansion of the expansion unit 100 is fixed (S500); Wow,
A surface finishing treatment step of neatly finishing the surface around the repaired construction after completion of the curing (S600);
Crack site repair construction method using the expansion unit for repairing the crack site of the concrete structure, characterized in that consisting of.
The method of claim 3,
The repair solvent 140 is a crack site repair construction method using a stretch unit for repairing the crack site of the concrete structure, characterized in that any one selected from cement, mortar, putty, urethane sealant, silicone sealant containing a hardener component.

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