KR20190063842A - Method for crack repair - Google Patents

Abstract

The present invention relates to a crack repair method for an improved appearance, a reduced construction period, and an improved working environment, capable of quickly and accurately repairing cracks due to internal or external factors of concrete on site, thereby shortening a construction period, and capable of preventing marks on a repaired construction surface, thereby providing a clean concrete crack repair. The present invention comprises: a crack portion check step of determining an installation interval of a T-port by previously checking the crack state, width, length of concrete; a crack pretreatment step of securing a repair material inlet by removing dirt and dust so that sealing and injection around the crack can be performed well; a crack portion sealing step of sealing the crack portion other than the T-port installation portion using a glue type sealing material so that a repair material to be injected does not leak into the crack portion; a T-port installation step of sealing the crack portion with the T-port and attaching the T-port; an injection repair material preparation step of preparing a colored epoxy repair material or coloring an epoxy repair material in accordance with the surrounding color of the concrete at the cracked site; a repair material injection step of injecting the injection epoxy repair material and completely filling the T-port while determining whether or not the material is injected into the crack; and a crack repair finishing step of removing the T-port and sealing material portions after finishing the injection of repair material and finishing cleaning.

Description

{Method for crack repair}

More particularly, the present invention relates to a method of repairing cracks caused by internal or external factors of concrete on a site in a fast and accurate manner, And more particularly, to a method for repairing cracks in a work environment, which is capable of providing a beautiful concrete crack and repair by preventing the marks on the repair surface.

Generally, a concrete structure tends to crack on the outside or inside of the structure due to various factors such as drying shrinkage, temperature change and leakage of concrete.

In addition, if the construction of the waterproof layer and the finishing concrete layer is poor in the place where a lot of loads such as the underground parking lot floor or the general floor slab are installed, the finishing concrete layer often floats even if it is not exposed to the outside of the structure.

Water and air are easily introduced into cracks and excited parts of the concrete structure, and weathering of the concrete is accelerated due to the influxed water and air, thereby causing the corrosion of the reinforcing steel, which has a serious effect on the life and safety of the structure .

A packer was used as a method for repairing cracks on the surface of the concrete structure.

In this crack repairing method using a packer, a tubular metal packer is press-fitted into a crack part, and a filling device filled with a maintenance liquid is connected to a packer through a pipe, and the repair fluid is supplied at high pressure to fix the crack part.

However, such a packer assembly has the following problems.

First, when the repair fluid is injected at a certain pressure through the injector, the pressure of the repair fluid injected into the hole and the upward and downward flow of the injection material during the injection cause the problem that the interface between the injection material and the sealant is separated (separated) And secondly, a plurality of packer assemblies are installed at regular intervals where cracks are formed at the time of repairing cracks, and injectors are connected to the injectors of the respective packer assemblies to inject the remedies. At this time, After filling the remedial solution, the injector is connected to the injection material of the adjacent packer assembly to perform the filling operation, so that the injection time of the remedial solution becomes longer.

In other words, after the injector is connected to one injection material and the injection into the crack gap is completed, the injector is connected to the other injection material to sequentially perform the filling work of the remedial liquid, so that the repairing work time is increased. Third, it is difficult to confirm how much the maintenance fluid has been filled in the gap during the filling of the repair fluid with the injector. To confirm this, it is necessary to connect the injector to any one of the spaced- It is found that the maintenance liquid is filled by confirming that the maintenance liquid is leaked. In this case, there is a problem that the periphery is contaminated due to the leakage of the maintenance liquid.

Therefore, in order to solve such a problem, in recent years, there has been proposed a method of manufacturing a crack-repairing pegger assembly employing a resilient storage tube, and Patent Registration No. 10-0976846 And a crack repairing method using the same), and Japanese Patent Laid-Open No. 10-1631037 (crack repairing method using a pin port and a remediation liquid injecting device used therein).

However, in the conventional crack repairing methods, it has been possible to provide a method for reducing the cost by fastening the leakage of the repair liquid and repairing the crack by making the portion of the repair material strong, but still, The structure was complicated and dust was generated in the process, and the curing time due to the epoxy sealing occurred for a long time, and it was difficult to check the state of the repair material injection, so that it was difficult to completely join the cracks. In addition, there is a problem that the marks of the work section due to the polishing work for removing the epoxy seal after the maintenance work of the cracks are left clearly, and the beauty of the maintenance surface is impaired.

Therefore, there is no need for re - cracking due to concrete crack repair, no dust generation, aesthetic improvement, and a concrete crack repairing method that can dramatically shorten the working air.

KR Patent Registration Bulletin B1 10-0903417 (June 10, 2009) KR Patent Registration No. B1 10-0976846 (Aug. 12, 2010) KR Patent Registration Bulletin B1 10-1631037 (June 06, 2016)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problems of the prior art, and its object is to provide a method of manufacturing a concrete product which can easily inject concrete into cracks, confirm whether the repair material is filled, This is to propose crack repair and maintenance method.

Another object of the present invention is to provide a glue-type sealing material which can be easily installed in a concrete crack gap to easily inject a repair material, and which does not leave marks on the repaired construction surface, And to provide a crack repairing method in which the working environment is improved.

Another object of the present invention is to provide a method of repairing cracks and a method of repairing cracks in a concrete structure, which is capable of providing a beautiful concrete crack repair by preventing the work part from being visible after construction by applying coloring to a repair material, .

It is another object of the present invention to provide a crack repairing method which is easy to inject into concrete cracks and easy to check whether a repair material is charged through a semi-transparent sealing material, It is for this reason.

It is a further object of the present invention to provide a method and a device for improving permeability in a crack opening, facilitating injection amount adjustment and re-injection according to maintenance, reducing aesthetic, This is to provide a crack repair method.

In order to achieve the above-mentioned object, the present invention provides a method of manufacturing a concrete structure, comprising: a cracking step of irradiating concrete with a crack, a width, a length, A crack pretreatment step of securing a filling material inlet by removing dirt and dust so that sealing and injection around the crack can be performed well; A cracked portion sealing step of sealing the cracked portion other than the tee-port mounting portion using a glue type sealing material so that the repair material to be injected does not leak to the cracked portion; A tee-port mounting step of sealing the tee-port to the cracked portion and attaching the tee-port; Preparing a toned epoxy repair material or preparing an injection repair material to prepare an epoxy repair material in accordance with the surrounding color of the concrete at the cracking site; A repair material injection step of injecting and completely filling the injection epoxy repair material into the T-port while determining whether or not the material is injected into the crack; And a crack repairing and finishing step of finishing the removal while cleaning and removing the teapot and the sealing material portion after the completion of the filling of the repair material, and discloses a crack repairing method in which aesthetic and air shortening work environments are improved.

In addition, at least four tiles are installed at intervals of 250 mm per 1 m of the crack portion, and the crack spacing is increased or decreased according to the thickness, crack width, and crack characteristics of the concrete structure. So that the injection is performed in a stepwise manner toward the small width.

In addition, in the injecting repair material injection step, the epoxy injection material produced in accordance with the color of the basic concrete is injected against the field cracking site, and if necessary, the second injection molding is performed in accordance with the color of the site, It can be characterized that reinjection is performed by judging whether the injection into the entire crack is made by the confirmation window of the translucent sealing material.

The glue type sealing material may be composed of 60% by weight of ethylene vinyl acetate, 20% by weight of hydrogenated resin, and 20% by weight of natural resin extracted from rosin.

In addition, the maintenance material may be colorized by adding a color tone to the basic epoxy in accordance with the color of the concrete, or may be colored in a construction site.

The sealing material may be a semitransparent glue type, and may be a confirmation window for confirming whether the injection material is injected.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problems of the prior art, and its object is to provide a method of manufacturing a concrete product which can easily inject concrete into cracks, confirm whether the repair material is filled, A crack repair method can be provided.

In addition, the present invention can provide a glue-type sealing material which can be easily installed in a concrete crack gap to easily inject a repair material, and does not leave marks on the repair surface, thereby providing an excellent concrete crack repair.

Further, according to the present invention, it is possible to provide a beautiful concrete crack repair by making it possible to prevent the work part from being visible after construction by coloring the repair material.

Also, the present invention can provide a crack repairing method which can easily inject concrete into cracks and easily check whether the repair material is charged through a semi-transparent sealing material, thereby simplifying the repair structure and simplifying the aesthetics, .

Further, the present invention has the effect of facilitating permeability in cracks, facilitating injection amount adjustment and re-injection according to repair, and shortening the air by a quick work process without damaging the structure.

1 to 5 show an embodiment according to a crack repairing method in which aesthetic pipe, air shortening, and working environment according to the present invention are improved,
FIG. 1 is a schematic view showing a concrete structure for installing a crack-repairing tee-port according to the present invention,
FIG. 2 is a view illustrating a state in which a repair material is injected into a crack part of a concrete structure according to a crack repairing method in which aesthetic pipe, air shortening, and work environment are improved according to the present invention;
FIG. 3 is a view illustrating a state in which a T-port is installed in a cracked portion of a concrete structure according to a crack repairing method in which aesthetic pipe, air shortening,
FIG. 4 is a view illustrating a repair process step (a) to a maintenance process step (f) according to a crack repairing method in which aesthetic and air shortening according to the present invention,
FIG. 5 is a process flow chart according to a crack repairing method in which the aesthetic, air shortening and working environment according to the present invention is improved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the 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.

1 to 5 show an embodiment according to a crack repairing method in which the aesthetic, air shortening and working environment according to the present invention is improved.

1 to 3, in the crack repairing method in which the aesthetic, air shortening, and working environments are improved according to the present invention, the cracks 3 of the concrete structure 1, Port 100 can be installed and operated.

Here, the T-port 100 is a structure such as a packer assembly or a T-Port, which has been provided in the previously registered Patent Publication No. 10-0976846 and Korean Patent Publication No. 10-1631037, The description is omitted.

In addition, the maintenance agent 200 may be provided at the rear end of the T-port 100 by a repair fluid injector 200 connected by a connection hose.

FIG. 4 is a view illustrating a repair process step (a) to a repair process step (f) according to the concrete crack repairing method of the present invention.

The repair process steps can be carried out in the order of (a) cracking, (b) pretreatment, (c) crack sealing, (d) teapot installation, (e) repair material injection, and (f) finishing.

FIG. 5 is a process flow chart of a crack repairing method according to the present invention, in which aesthetic pipe, air shortening, and working environment are improved. After the buteti-port is assembled and installed, the following process steps can be provided.

The crack repairing method according to the present invention includes a cracking step S10 for determining the installation interval of the tee-pot by previously examining the crack state, width, length, etc. of the concrete, A pretreatment step (S20) of a cracked part for securing a filling material inlet by removing dirt and dust so that sealing and injection around the cracked part can be performed well; (S30) of sealing a cracked portion other than the tee-port mounting position using a glue type sealing material so that the repair material to be injected does not leak to the cracked portion; (S40) of attaching a tee-port to a cracked portion after sealing the tee-port; (S50) of preparing a color coordinated epoxy repair material or arranging an epoxy repair material in accordance with the surrounding color of the concrete at the cracking site; (S60) of injecting and fully filling the injection epoxy repair material into the T-port while judging whether or not the injection into the crack is performed; And a crack repair finishing step (S70) for finishing cleaning and removing the tee-port and the sealing material portion after the completion of the refilling of the repair material.

The crack portion irradiating step S10 irradiates the crack state, width, depth, length, etc. of the crack part 3, which is the crack of the construction concrete structure 1, It is possible to configure an installation interval or a position of the portable terminal 100.

The pretreatment step S20 of the cracking part removes various kinds of dirt and dust so that the sealant 10 and the repair material 20 can be smoothly injected around the cracked crack part 3, It is possible to secure the injection port so that the injection can be performed well.

The cracked portion sealing step S30 is a step of sealing the cracked portion 3 other than the T-port 100 mounting position so that the repair material 20 to be injected does not leak into the cracked portion 3, ) Can be used to seal all of the crack gap portions.

Particularly, in the case of a room with a low winter temperature or room temperature, if the temperature of the bottom surface is too low, the adhesive force due to sealing may be lowered, so that it is possible to heat the construction site using a heating gun or the like.

Here, it is preferable that the sealing material 10 is composed of 60% by weight of ethylene vinyl acetate, 20% by weight of hydrogenated resin, and 20% by weight of natural resin of rosin as a glue type.

Preferably, when 20% by weight of the natural resin is mixed, even when an injection pressure of up to 3.7 kg / cm 2 is generated, the adhesive performance can be excellently exhibited without falling off.

The sealing material 10 is a semi-transparent glue type and is configured as a confirmation window for confirming whether or not the repair material 20 is injected into the crack opening injected by the T-port 100 through the translucent sealing material 10 It is unnecessary to attach a separate inspection port.

In addition, the glue type sealing material 10 has no additional mixing process as compared with the conventional epoxy sealing material, and the curing time of the sealing process is shortened, so that the repair material can be injected immediately after the sealing of the crack, thereby shortening the air. In addition, since it is semitransparent glue type, it is possible not only to check the injection state of the repair material in real time, but also to minimize the damage to the construction surface of the concrete because it does not use a grinder or torch in the finishing process,

The T-port installation step S40 is to install the T-port 100 after sealing the T-port 100 in the cracking section 3, The crack width can be increased or decreased according to the thickness, crack width, and crack characteristics of the crack, and the crack can be installed in such a manner that the crack width gradually increases from the wide side to the small side.

In the preparation step S50 of preparing the injected maintenance material, a coloring agent similar to the construction site of the concrete structure 1 is preliminarily prepared by preparing a colored epoxy repair material or preparing an epoxy repair material according to the surrounding color of the concrete at the cracking site. Or it may be configured to prepare a repair material having the same color tone as the concrete construction surface of the construction site immediately on site.

In other words, the toned repairing material 20 can be simplified in its operation by using a primary color-toned product during production or by a secondary color-toning process in accordance with the toning of the construction surface in the field.

The repair material injection step S60 is an operation of injecting and fully filling the injection epoxy repair material 20 into the T-port 100 while determining whether or not the injection into the crack is to be performed, so as to confirm whether the injection material is injected through the translucent sealing material 10 In addition, it is possible to prevent re-cracking by fully joining by injecting up to 0.1 mm microcracks of the cracking portion 3, and also it is possible to control the amount of injection by the direct injection method of the repairing material injecting device 200, It is convenient to check the injection of the injection material through the discharge of the air inside the crack and the semi-transparent sealing material, thereby preventing the occurrence of re-cracking due to the perfect bonding, and is also effective for shortening the construction time.

The crack repair and finishing step S70 is a process of finishing the removal of the T-port 100 and the sealing material 10 after cleaning the T-port 100 and the sealing material 10, After removing the part using a scrap bar, the remaining part of the stain can be finished neatly by finishing work using propane burnishing.

As described above, according to the present invention, the crack repairing method improving the work environment and the aesthetic pipe shortening of the present invention can drastically shorten the air due to no curing time due to the construction of the glue type sealing material, It is not only possible to tightly fill the repair material while confirming the injection state by the translucent gluing type sealing material, but also to prevent the marks of the construction site from being left easily by the construction and removal of the glue type sealing material, It is possible to provide an environmentally friendly concrete crack repairing method without generating dust generated in the process of removing after using the existing epoxy sealing.

In addition, it is possible to shorten the daily air cycle time by shortening the time required for shortening the air, ie, shortening the curing time of the sealing material to 1 hour per day. It can be effective.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, 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 present invention as defined by the appended claims and their equivalents.

1: Concrete structure
3:
10: Sealing material
20: Repairs
100: tea-pot
200: Maintenance material injection device

Claims (6)

A crack portion irradiating step of determining the installation interval of the tee-pot by previously examining the crack state, width, length, etc. of the concrete;
A crack pretreatment step of securing a filling material inlet by removing dirt and dust so that sealing and injection around the crack can be performed well;
A cracked portion sealing step of sealing the cracked portion other than the tee-port mounting portion using a glue type sealing material so that the repair material to be injected does not leak to the cracked portion;
A tee-port mounting step of sealing the tee-port to the cracked portion and attaching the tee-port;
Preparing a toned epoxy repair material or preparing an injection repair material to prepare an epoxy repair material in accordance with the surrounding color of the concrete at the cracking site;
A repair material injection step of injecting and completely filling the injection epoxy repair material into the T-port while determining whether or not the material is injected into the crack;
And a crack repair and finishing step of finishing the removal of the tee-port and the sealing material portion while cleaning and after completion of the refilling of the repair material
Reduced aesthetics and air, crack repair method improved work environment.
The method according to claim 1,
The method of claim 1,
At least four pieces per 1 m of the crack part are installed at intervals of 250 mm,
The crack spacing is increased or decreased according to the thickness, the crack width, and the crack characteristics of the concrete structure, and the crack is installed in such a manner that the crack width is gradually increased from the wide side to the small side.
Reduced aesthetics and air, crack repair method improved work environment.
The method according to claim 1,
Wherein the injecting repair material injecting step comprises:
Injection of epoxy injection material, which is colored with the basic concrete color,
If necessary, it is injected with secondary color in the field in accordance with the site color and reinjection is judged by the confirmation window of the translucent sealing material before the internal filling material is cured,
Reduced aesthetics and air, crack repair method improved work environment.
The method according to claim 1,
The glue type sealing material is composed of 60% by weight of ethylene vinyl acetate, 20% by weight of hydrogenated resin, and 20% by weight of natural resin extracted with rosin
Reduced aesthetics and air, crack repair method improved work environment.
The method according to claim 1,
The maintenance material
It is characterized in that the base epoxy is colored by adding a color tone in advance to the concrete color or is colored in the construction site
Reduced aesthetics and air, crack repair method improved work environment.
The method according to claim 1,
The sealing material is a translucent glue type,
And a confirmation window for confirming whether or not the injection material is injected.
Reduced aesthetics and air, crack repair method improved work environment.

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