KR101448882B1 - A waterproofing and crack repairing method using improved asphalt emulsion including blown asphalt and latex polymer for concrete structure - Google Patents

Abstract

Disclosed is a crack repairing method for a concrete structure using an improved asphalt emulsion containing blown asphalt and high molecule latex resin. The present invention may improve durability and a waterproofing property of a concrete structure and reinforce a crack by inserting a crack repairing device comprising a cylinder and a storage tank into the crack and injecting copolymerization resin, which is an improved asphalt emulsion made of blown asphalt and high molecule latex resin as main ingredients.

Description

Technical Field [0001] The present invention relates to a waterproofing and crack repairing method for a concrete structure using a modified asphalt emulsion including a blown asphalt and a polymer latex resin,

The present invention relates to a waterproofing method and a crack repairing method for a concrete structure using a modified asphalt emulsion, and more particularly, to a waterproofing and crack repairing method for a concrete structure using a copolymer resin such as a modified asphalt emulsion containing a block asphalt and a polymer latex resin .

Concrete structures are repeatedly applied over time, fatigue is accumulated, and cracks are generated in structures such as walls, slabs, or floors due to the movement of the lower base. So far, repair and strengthening methods have been developed to reinforce cracks in concrete structures. Conventional methods of repairing concrete cracks include an injection method in which an inorganic or organic filler is injected into a crack having a width of 0.2 mm or more, a filling method in which a filler is filled in a wide crack having a width of 5 mm or more, A coating method in which the entire surface is coated without being treated individually, and an impregnation method in which an epoxy resin or the like is applied to the surface of the concrete as a whole to impregnate the surface with cracks. In this case, in order to repair and reinforce cracks having a width of 5 mm or more, an injection device for injecting a filler or a reinforcement liquid into a crack region has been generally developed, and in general, there is a technology field of high pressure injection device capable of injecting a high- It is biased. In addition, epoxy resin or polyurethane has been used as a filler or reinforcement liquid to be injected into cracks. In this connection, Korean Utility Model Registration No. 20-0408557 discloses an injection device for injecting epoxy resin into cracks at a high pressure Lt; / RTI >

As in the prior art, there is an advantage in that the working time is shortened when the reinforcing liquid is injected into the cracked region by the high pressure. However, in the repair of cracks, there is a problem that the depth of the cracks from the repair surface is too deep, . In addition, the epoxy resin has excellent abrasion resistance and is suitable for coating. However, when weather resistance is not good and the elastic modulus and thermal expansion coefficient of the concrete are different from each other, when the temperature change is large, the hardening is delayed and the adhesive strength is weakened, There is a problem in that it is separated from the maintenance aspect of the crack with the structure. In addition, the epoxy resin is not good in stretchability, and cracks are easily generated when the concrete structure is finely changed or the load is changed. Because of insufficient hygroscopicity, the concrete is deteriorated because it can not block the water penetrated into the concrete through cracks. Resulting in deterioration of long-term durability performance. Further, there is a problem that the injected epoxy resin takes a long time to cure and the waiting time of the subsequent process becomes long. Also, it is vulnerable to ultraviolet rays because of poor weatherability, and when epoxy resin is used in the winter season, the temperature must be increased and the curing time is delayed compared with the summer. If the ratio of the epoxy resin to the epoxy resin is not accurate, there is a problem that workability is deteriorated due to changes in physical properties. In the case of an injector for injecting an epoxy resin into a cracked portion, an epoxy resin is injected again after the epoxy resin is injected There is a problem that it is not easy to carry out the present invention. In addition, the epoxy resin is a non-flammable organic material, which has poor heat resistance and high flammability. In case of a fire in a concrete structure, harmful gas is generated to cause fatal damage to the concrete structure. Furthermore, it is toxic and harmful to human body. This was a high problem.

No. 20-0408557 (entitled "Automatic Injection Device for Epoxy Resin for Repairing Cracks in Concrete Structures", published on Feb. 13, 2006)

The object of the present invention is to improve the packing performance by physically and chemically bonding rubber modified or modified synthetic resin and additive to blown asphalt or common petroleum asphalt consisting of oil fraction classified by atmospheric pressure and pressure distillation process during crude oil refining By injecting and applying the copolymer resin, which is made of modified asphalt as a main component, to the cracked site, it is possible to prevent the water from flowing inside the concrete structure as well as to make the reinforcement liquid to the minute and deep crack region. To keep the cross-section of the crack.

It is another object of the present invention to provide a method of injecting and coating a copolymer resin into a cracked portion by injecting a copolymer resin using an injector for applying a high pressure to a storage container having a certain angle with the paper surface, And injecting the copolymer resin at a low pressure by the natural expansion force of the compressed air to penetrate the waterproofing solution to the minute crack region to enhance the durability of the concrete.

The object of the present invention is also to provide a crack repairing apparatus for injecting a copolymer resin into a cracked portion, wherein the structure of the crack repairing apparatus is made of easy-to-process polyethylene and in the case of injection rubber, To improve accessibility.

It is also an object of the present invention to improve the workability by closely adhering the crack repairing device for injecting the copolymer resin to the crack site more tightly to the crack site.

In addition, it is an object of the present invention to provide a method and a device for inserting a reinforcing liquid into a hole, wherein the hole is symmetrically diagonal to the cracked portion even when the diameter of the cracked portion is smaller than the diameter of the portion, To increase the application range of cracks to be repaired by the crack repair method according to the present invention.

In order to achieve the above object, the present invention provides a waterproofing and crack repairing method for a concrete structure using a modified asphalt emulsion comprising a blended asphalt and a polymer latex resin, comprising the steps of treating the cracked portion of the concrete structure, A cleaning step of spraying air to remove dust; A sealing step of applying a sealing agent or attaching a strong adhesive tape at a predetermined interval (L) excluding a site where a plurality of supporting members are to be inserted along the cracked part; Attaching a supporting member to the cracked portion to which the sealing agent is not applied or to which the strong adhesive tape is not attached in the sealing step; A crack repairing device inserting step of inserting a crack repairing device composed of a hollow cylinder and a storage tank into the support member attached in the step of attaching the support member; Preparing a reinforcing material for preparing a copolymer resin composed of a blown asphalt, a tablet exfoliating agent, a polymer latex resin (SBR), a chlorinated paraffin, an asphalt adhesive, a cationic emulsifier, ethylene glycol and ammonium phosphate; The injector in which the copolymer resin prepared in the stiffener preparing step is inserted is inserted into the cylinder of the crack repairing apparatus inserted in the crack repairing apparatus insertion step and the copolymer resin in the injector is pressurized to the storage tank and the crack part A high-pressure injection step of a copolymer resin injecting the copolymer resin; A copolymer resin low pressure injection step of removing the injector inserted in the high pressure injection step of the copolymer resin and moving the copolymer resin injected into the storage tank of the crack repairing apparatus to the crack part by the air pressure inside the storage tank; If the all of the copolymer resin stored in the storage tank has moved to the crack region and if all of the copolymer resins have moved, the injector containing the copolymer resin is reinserted into the cylinder, and the copolymer resin is introduced into the storage tank and the crack region of the crack repair apparatus A step of injecting a copolymer resin to be injected; A removing step of removing the crack repairing device and the supporting member after the injected copolymer resin is cured; And a finishing step of removing the sealing agent or the strong adhesive tape and finishing a cracked portion using a finishing material.

At this time, the copolymer resin prepared in the stiffener preparation step is composed of 40% by weight of blown asphalt, 30% by weight of a tablet stripper, 17% by weight of a polymer latex resin (SBR), 3% by weight of paraffin chloride, 3% by weight of an asphalt adhesive, cationic emulsifier, 3% by weight of ethylene glycol, 2% by weight of ethylene glycol and 2% by weight of ammonium ammonium phosphate.

At this time, the copolymer resin prepared in the stiffener preparation step may be prepared by allowing the blended asphalt to be accommodated in a chemical reactor, raising the temperature to 90 to 120 ° C while charging the cationic emulsifier, gradually introducing the polymer latex resin into a chemical reactor An emulsification step of stirring at a low speed; A mixing step of adding chlorinated paraffin and ammonium phosphate to the chemical reactor and mixing the chlorinated paraffin and ammonium phosphate with the emulsified asphalt obtained in the emulsification step; A condensation polymerization step in which the tablet remover is added to the chemical reactor and heating at 95 ° C to 105 ° C; An input step of supplying a non-heated asphalt adhesive and ethylene glycol to the chemical reactor; And a cooling step of cooling the copolymer resin obtained in the above-mentioned charging step.

In this case, the crack repairing device inserted in the crack repairing device insertion step may include an insertion portion to be inserted into the support member, the cylinder being located at the other side of the insertion portion, an injection port into which the injector is inserted and into which the copolymer resin is injected, And a connection passage communicating with the storage tank so that the copolymer resin injected from the injector through the injection port is stored in the storage tank is formed. The storage tank includes an insertion passage communicating with the connection passage, A stopper for inserting and fixing the injector into the injection port and a stopper for injecting the copolymer resin into the cylinder when the injector is inserted, In order to prevent backflow to the outside, It characterized in that the incision portion is formed in the rubber injection-stage four-way type, which is installed.

At this time, the crack repairing device inserted in the crack repairing device inserting step includes a stopper and an outer circumferential surface of the cylinder so as to be fixed to the injection port of the cylinder, and the circumferential surface of the inner circumferential surface contacting the outer circumferential surface of the cylinder Wherein the cylinder of the crack repairing apparatus is formed with a plurality of engaging jaws around an outer circumferential surface of the cylinder cap to which the cylinder cap closely contacts by engaging with the plurality of engaging jaws.

At this time, the support member attached at the step of attaching the support member may include a circular center hole for injecting the copolymer resin injected at the high-pressure injection step of the copolymer resin and the low-pressure injection step of the copolymer resin into a crack, A pedestal formed with a plurality of perforations for allowing the sealing agent to pass through the upper surface of the pedestal; And a support tube installed vertically to the center hole of the pedestal and into which the inserted portion of the cylinder is inserted for injecting the copolymer resin into the cracked portion.

In order to achieve the above-mentioned object, the waterproofing and crack repairing method of a concrete structure using a modified asphalt emulsion containing a blanket asphalt and a polymer latex resin according to the present invention is characterized in that the waterproofing and crack repairing method A perforating step of perforating the hole; A cleaning step of surface-treating the cracked portion and spraying air or spraying water on the cracked portion to remove dust; A supporting member inserting step of inserting a supporting member into the insertion hole drilled in the perforating step; A sealing step of applying a sealing agent or attaching a strong adhesive tape except a portion where the supporting member is inserted along the cracked portion; Inserting a crack repairing device including a hollow cylinder, a storage tank, and injection rubber into a support member inserted in the support member inserting step; A step of preparing a reinforcing material for preparing a copolymer resin comprising blooming asphalt, tablet removing agent, polymer latex resin, chlorinated paraffin, asphalt adhesive, cationic emulsifier, ethylene glycol and ammonium phosphate; The injector in which the copolymer resin prepared in the stiffener preparing step is inserted is inserted into the cylinder of the crack repairing apparatus inserted in the crack repairing apparatus insertion step and the copolymer resin in the injector is pressurized to the storage tank and the crack part A high-pressure injection step of a copolymer resin injecting the copolymer resin; A copolymer resin low pressure injection step of removing the injector inserted in the high pressure injection step of the copolymer resin and moving the copolymer resin injected into the storage tank of the crack repairing apparatus to the crack part by the air pressure inside the storage tank; If the all of the copolymer resin stored in the storage tank has moved to the crack region and if all of the copolymer resins have moved, the injector containing the copolymer resin is reinserted into the cylinder, and the copolymer resin is introduced into the storage tank and the crack region of the crack repair apparatus A step of injecting a copolymer resin to be injected; A removing step of removing the crack repairing device and the supporting member after the injected copolymer resin is cured; And a finishing step of removing the sealing agent or the strong adhesive tape and finishing a cracked portion using a finishing material.

At this time, the copolymer resin prepared in the stiffener preparation step is composed of 40% by weight of blown asphalt, 30% by weight of a tablet stripper, 17% by weight of a polymer latex resin (SBR), 3% by weight of paraffin chloride, 3% by weight of an asphalt adhesive, cation emulsifier 3% by weight, ethylene glycol 2% by weight and ammonium phosphate 2% by weight.

At this time, the copolymer resin prepared in the stiffener preparation step may be prepared by allowing the blended asphalt to be accommodated in a chemical reactor, raising the temperature to 90 to 120 ° C while charging the cationic emulsifier, gradually introducing the polymer latex resin into a chemical reactor An emulsification step of stirring at a low speed; A mixing step of adding chlorinated paraffin and ammonium phosphate to the chemical reactor and mixing the chlorinated paraffin and ammonium phosphate with the emulsified asphalt obtained in the emulsification step; A polymerization step of adding a tabletting agent to the chemical reactor and heating at 95 ° C to 105 ° C; An input step of injecting an asphalt adhesive and ethylene glycol into the chemical reactor; And a cooling step of cooling the copolymer resin obtained in the charging step by injecting cooling water into a cooling container accommodating the chemical reactor.

In this case, the crack repairing device inserted in the crack repairing device insertion step may include an insertion portion to be inserted into the support member, the cylinder being located at the other side of the insertion portion, an injection port into which the injector is inserted and into which the copolymer resin is injected, And a connection passage communicating with the storage tank so that the copolymer resin injected from the injector through the injection port is stored in the storage tank is formed. The storage tank includes an insertion passage communicating with the connection passage, A stopper for inserting and fixing the injection resin into the injection port, and a stopper for cutting the injection resin when the injector is inserted. When the injector is removed, Which is provided with a cut-in portion for cutting off .

At this time, the crack repairing device inserted in the crack repairing device inserting step includes a stopper and an outer circumferential surface of the cylinder so as to be fixed to the injection port of the cylinder, and the circumferential surface of the inner circumferential surface contacting the outer circumferential surface of the cylinder Wherein the cylinder of the crack repairing apparatus is formed with a plurality of engaging jaws around an outer circumferential surface of the cylinder cap to which the cylinder cap closely contacts by engaging with the plurality of engaging jaws.

At this time, the support member inserted in the support member inserting step is inserted into the crack part, and the hollow insertion insertion part of the cylinder is inserted to insert the copolymer resin into the crack part, And a screw thread is formed along the periphery of the outer peripheral surface of the insertion tube.

According to the present invention, a modified asphalt which improves the packing performance by physically and chemically bonding rubber or synthetic polymer modified material and additive to blown asphalt or common petroleum asphalt made of oil which is produced through atmospheric pressure and pressure distillation process during crude oil refining By injecting and applying the copolymer resin produced as the main component to the crack site, it is possible to prevent the reinforcement liquid from reaching the fine and deep cracks, and to prevent the flow of water in the concrete structure to strengthen the waterproof property. It has an effect of maintaining the cross section of the crack.

According to the present invention, in injecting a copolymer resin into a cracked portion, a copolymer resin is injected using an injector which applies a high pressure to a storage container having a certain angle with the paper surface, and at the same time, The copolymer resin is injected at a low pressure by the natural expansion force of air to infiltrate the waterproofing solution to the fine cracked portion, thereby enhancing the durability of the concrete.

According to the present invention, the structure of the crack repairing device for injecting the copolymer resin into the cracked portion is made of polyethylene, which is easy to process, and the injection rubber is molded into ethylene propylene rubber in particular, It is effective to improve accessibility by lowering.

Further, according to the present invention, there is an effect of improving the workability by firmly fixing the crack repairing apparatus for injecting the copolymer resin into the crack site.

In addition, according to the present invention, even if the diameter of the cracked portion is smaller than the diameter of the portion where the crack repairing device for injecting the reinforcing liquid is inserted, a support member, which is inserted and fixed in the insertion hole, The reinforcement liquid is injected to enlarge the application range of the crack region to be repaired by the crack repairing method according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing each step of a crack repairing method of a concrete structure using a copolymer resin according to an embodiment of the present invention. FIG.
FIG. 2 is a flowchart illustrating a process for preparing the copolymer resin prepared in step S140 shown in FIG.
FIG. 3 is a cross-sectional view illustrating a structure of a support member attached to a crack at step S120 shown in FIG. 1 and a structure of a crack repairing apparatus inserted into a support member at step S130.
Fig. 4 is a view for explaining the shape of the cut-out portion more specifically when the injected rubber shown in Fig. 3 is viewed from the direction of "A ".
5 is a cross-sectional view for explaining the shape of the cylinder cap and the cylinder of the crack repairing apparatus shown in FIG.
6 is a flowchart showing each step of a crack repairing method of a concrete structure using a copolymer resin according to another embodiment of the present invention.
FIG. 7 is a cross-sectional view illustrating a structure of a support member inserted in a cracked region in step S142 shown in FIG. 6. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. , And this does not mean that the technical idea and scope of the present invention are limited.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing each step of a crack repairing method of a concrete structure using a copolymer resin according to an embodiment of the present invention. FIG.

Referring to FIG. 1, a waterproofing and crack repairing method of a concrete structure using a modified asphalt emulsion including a blanket asphalt and a polymer latex resin according to the present invention is characterized in that a crack is first treated in the concrete structure, Or water is sprayed to remove dust (S100). At this time, it is preferable to perform a surface treatment with a radius of about 10 cm around the cracked portion using a grinder or an iron brush. Thereafter, air is injected at a high pressure using a compressor air gun to increase the adhesive force of the sealing agent, thereby collecting the dust. If the dust is removed by spraying with water, dry the surface of the crack and the surrounding concrete sufficiently.

After step S100, a sealing agent is applied at a predetermined distance L or a strong adhesive tape is attached (S110) except for a portion where a plurality of supporting members are to be inserted along the cracked portion. At this time, the sealing agent can be applied by using the hera. The sealing agent can be a sealing agent that is usually used for repairing cracks in concrete. The sealing agent is advantageous in that foaming does not occur well, A polyether polyol, a polyester polyol, a polycarbonate polyol, and the like, or a mixture of two or more thereof. At this time, it is preferable that the mixing ratio of the sealing agent to the curing agent is 2: 1. The curing time of the sealing agent is preferably 4 hours in terms of 200 g, and the curing time is preferably 6 hours in the room temperature. However, the curing time is not limited thereto and can be adjusted according to the working environment. The sealing agent and the strong adhesive tape have an effect of preventing the copolymer resin from flowing out of the concrete crack after injecting the copolymer resin into the crack site. The predetermined distance L is preferably 20 cm, but is not limited thereto, and can be adjusted according to the width of the crack or the depth of the crack.

After step S110, a supporting member is attached to the cracked part to which the sealing agent is not applied in step S110 (S120). At this time, the center hole formed in the support plate of the support member is adhered to the crack region in a consistent manner. A detailed description of the support member will be given later with reference to Fig.

After step S120, a crack repairing device composed of a hollow cylinder and a storage tank is inserted into the support member attached in step S110 (S130). At this time, the cylinder is provided with a hole penetrating the center of the cylinder so that the copolymer resin can be injected into the cracked portion. The crack repairing device is inserted into the supporting member so that one side of the hole passing through the center of the cylinder is located inside the supporting member. A detailed description of the crack repairing apparatus will be given later with reference to FIG.

After step S130, a copolymer resin composed of blown asphalt, tablet exfoliating agent, polymer latex resin, chlorinated paraffin, asphalt adhesive, cationic emulsifier, ethylene glycol and ammonium phosphate is prepared (S140). At this time, 40% by weight of the blown asphalt, 30% by weight of the tablet remover, 17% by weight of the polymer latex resin (SBR), 3% by weight of chloroparaffin, 3% by weight of the asphalt adhesive, % By weight, 2% by weight of ethylene glycol, and 2% by weight of ammonium phosphate. A specific process of producing the copolymer resin will be described later with reference to FIG.

Blow asphalt is an asphalt produced by blowing air into a soft, straight asphalt (common asphalt) at 170 ° C to 230 ° C to oxidize, polymerize and condense. It is stronger than epoxy resin, which is weak in impact resistance used in conventional crack repair, and has high heat resistance because it has high softening point, so it is safe and hardly denatured due to temperature change, thereby reinforcing the durability and reinforcement of concrete structure. In some cases, the copolymer resin may contain modified asphalt as a main component instead of blown asphalt. Modified asphalt is an asphalt which improves the packing performance by physically and chemically bonding rubber modified or polymer modified material and additive to petroleum asphalt. Modified asphalt consists of SBS-modified asphalt and SBR (styrene-butadiene rubber), a latex series thermosetting rubber that physically and chemically bonds thermoplastic polymer SBS (Styrene Butadiene Styrene Block Copolymer) CRM (Crumb Rubber Modifier) modified asphalt which is a mixture of SBR modified asphalt which improves abrasion resistance and waste tire regenerated rubber powder and induces swelling of rubber powder while stirring and curing is mixed with ordinary asphalt And ginsonite modified asphalt with increased asphaltenes content. Modified asphalt is excellent in weatherability because it is not denatured by temperature change and maintains elasticity and flexibility even after being injected into a crack region. In particular, when a rubber modifier is used, it has excellent waterproof effect and excellent storage stability .

The tablet release agent is a waterproof agent in the form of a cancer-yellow liquid which is ionized by a combination of desulfurized mineral oil and additives. It prevents penetration of cracks to prevent moisture absorption of concrete and corrosion of metals such as reinforcing bars in concrete structures. The tablet removers are tablet removers comprising ethanolamine (NH ₂ CH ₂ CH ₂ OH) and methylisothiazolinone (C ₄ H ₅ NOS), such as the product name "reebol" . The specific gravity is 0.84 at 25 ° C, and the purified release agent generally has the effect of reducing the surface damage and cleansing the repair surface of cracks, as compared with the case of repairing cracks using a release agent prepared by purifying waste oil.

SBR (Styrene-Butadiene Rubber) is a liquid-phase polymer prepared by emulsion polymerization of a polymer blended with styrene and butadiene as main materials and water at a certain ratio. In order to emulsify and polymerize the polymer latex resin, styrene, butadiene, a hydrophilic comonomer, methacrylic acid (MAA) and acrylic acid (AA) as additives, an anionic emulsifier, an electrolyte, a thermal decomposition catalyst, a molecular weight regulator, After stirring for a certain period of time, it is preferable to add the commonly used additives for preparing the polymerized monomer, the carboxyl monomer and the polymer latex resin, and polymerize at a low temperature. However, the present invention is not limited thereto. The polymer latex resin forms a film on the repair surface of the crack of the concrete, and the solid part of the latex resin is filled in the cracked part, thereby reducing the permeability of the concrete and enhancing the adhesion strength of the concrete to enhance the adhesion strength of the concrete structure It increases resistance to water-proofing and freezing and thawing resistance. The proportion of the polymer in the process of preparing the polymer latex resin is preferably 45 to 47%, but is not limited thereto.

The chlorinated paraffin (CH ₂ Cl (CH ₂ ) ₂₂ CH ₂ ) is a flame retardant which prevents asphalt from burning in the process of heating the blown asphalt or modified asphalt to cause a chemical reaction. At this time, the chlorine content of the chlorinated paraffin is preferably 70%, and the softening point of the chlorinated paraffin is 91 ° C.

The asphalt adhesive is a non-heating type modifier which is prepared by adding EVA (Ethylene Vinyl Acetate) resin, paraffin, and calcium carbonate (CaCO ₃ ) powder in a certain ratio and catalytic condensation reaction in liquid state. In some cases, the asphalt adhesive may be composed of a quick-drying asphalt compound as a main component and may be a synthetic rubber adhesive, a natural mineral fiber, a petroleum resin, an absorbent polymer resin and an isobutylene or polyisobutylene- , And may be prepared by adding zinc stearate, a solvent, other dispersant, an antioxidant, or a plasticizer as an auxiliary additive. The asphalt adhesive penetrates into the crack part of the concrete structure and is adhered to the crack part, so that the adhesion surface to the crack part is flexible, thereby increasing the water resistance of the concrete, and the adhesive strength and chemical resistance are excellent. The asphalt adhesive is a colorless and odorless liquid polymer which is excellent in chemical stability against heat and UV and is easy to store because there is no solidification or vaporization.

The cationic emulsifier is added during the process of reacting the asphalt with the polymer latex resin to emulsify the asphalt into a low viscosity aqueous emulsion. The cationic emulsifier is positively charged and is preferably 3% by weight since the asphalt can not be emulsified when the content is less than about 1% by weight. In some cases, a blowing agent may be added to emulsify the blown asphalt in place of the cationic emulsifier.

Ethylene glycol (C ₂ H ₄ (OH) ₂ ) is a blowing agent that is added during the process of chemical reaction by emulsifying blown asphalt or modified asphalt. As the antifreeze, the copolymer resin is stored in the winter season to prevent the copolymer resin from being cooled in crack repairing work, and permeates into the concrete structure to increase the resistance to freezing and thawing of the concrete. The ethylene glycol is preferably a water-soluble, nonflammable colorless and sticky liquid having a specific gravity of 1.1.

Ammonium phosphate _{((NH 4) 3 PO 4} ) is the flame retarding agent in solid form that prevents the asphalt is burned in a process that causes the chemical reaction by heating the blown asphalt as the chloride parapinwa, as a salt of phosphoric acid and ammonium.

After the step S140, an injector containing the copolymerized resin prepared in the step S140 is inserted into the cylinder of the crack repairing apparatus inserted in the step S130, and the copolymerized resin in the injector is pressurized, The copolymer resin is injected into the site (S150). The injector is inserted into the other side of the hole passing through the cylinder inserted into the support member in step S130 and the copolymer resin accommodated in the injector is pressurized by using the injector so that the copolymer resin flows into the storage tank of the crack repair apparatus and the crack site . At this time, it is preferable to inject the copolymer resin until the pressure of the injector becomes about 12 kg / cm3 or until the copolymer resin is about 3/4 of the inside of the crack repairing device, but it is not limited thereto. The injector is described in detail in Korean Patent Laid-Open Publication No. 2000-12271 (the title of the invention: an epoxy resin injection device for crack repairing of concrete structures), which was published on Mar. 6, 2000, The description will be omitted.

After step S150, the injector inserted into the cylinder is removed in step S150, and the copolymer resin injected into the storage tank of the crack repairing apparatus is moved to the cracked part by the air pressure inside the storage tank (S160). When the injector inserted into the cylinder is removed after the copolymerized resin is injected into the storage tank in step S150, the injection port of the cylinder is blocked by the injection rubber portion provided in the cylinder as described later) To the outside of the cylinder. Then, the air contained in a certain space of the storage tank is compressed to increase the pressure, and the copolymer resin stored in the storage tank moves to the cracked portion by the expansion force of the compressed air. That is, according to Boyle's law, the air pressure of the storage tank is increased above the atmospheric pressure, and the copolymer resin moves to the cracked region until the air pressure of the storage tank becomes equal to the atmospheric pressure. As a result, the copolymer resin is primarily injected at a high pressure using the injector in step S150, and the copolymer resin is injected at a low pressure by using the air pressure of the storage tank in step S160 so that the copolymer resin is infiltrated into the minute crack part of the concrete structure It has the effect of strengthening the durability and reinforcement of the concrete structure.

After the step S160, it is checked whether all of the copolymer resin stored in the storage tank has moved to the cracked region. If the copolymer resin has moved all the way, the injector containing the copolymer resin is reinserted into the cylinder and the copolymer resin is stored And injected into the tank and the cracked region (S170). When all of the copolymer resin stored in the storage tank is moved to the cracked region, the reinforcing resin may be injected to the deep cracked portion of the concrete structure.

If the injected copolymer resin is cured after step S170, the crack repairing apparatus inserted in the support member in step S130 and the support member attached on the crack in step S120 are removed (step S180). The curing time of the copolymer resin may vary depending on the temperature of the working environment for about 4 hours at room temperature.

After step S180, the sealant or the strong adhesive tape applied along the crack is removed in step S110, and the crack is closed using the finish material (S190). The finishing material may be a general finishing material used for repairing and finishing concrete structures, and a finishing material obtained by mixing an acrylic crack coverer, cement filler, and color marble powder.

FIG. 2 is a flowchart illustrating a process for preparing the copolymer resin prepared in step S140 shown in FIG.

2, in order to produce the copolymer resin, a blanket asphalt is first charged into a chemical reactor, the cationic emulsifier is added while raising the temperature to 90 ° C to 120 ° C, the polymer latex resin is gradually added to the chemical reactor And stirred (S141). At this time, it is preferable to slowly emulsify the blended asphalt while slowly stirring the blast asphalt at a low speed of about 80 to 130 rpm. As described above, the modified asphalt may be heated and emulsified in place of the blown asphalt.

After step S141, chlorinated paraffin and ammonium phosphate are added to the chemical reactor and mixed with the emulsified asphalt obtained in the emulsification step (S142). At this time, the emulsified asphalt mixed with the chlorinated paraffin and ammonium phosphate may be aged for a certain period of time. The aging time is preferably about 1 hour, but is not limited thereto. As described above, chlorinated paraffin and ammonium phosphate prevent combustion of asphalt as a flame retardant.

After step S142, the tablet removing agent is added to the chemical reactor and heated at 95 to 105 DEG C (S143). The tablet removing agent is introduced into the chemical reactor and causes a condensation polymerization reaction with the asphalt subjected to the mixing process. Preferably, the tableting agent is added in three times, and the polymerization time is preferably about 50 minutes.

After the step S143, a non-heated asphalt adhesive and ethylene glycol are introduced into the chemical reactor (S144). At this time, the asphalt adhesive has an effect of penetrating into cracks of the concrete structure to increase the adhesive strength, and ethylene glycol has an effect of preventing freezing of asphalt as described above.

After step S144, the cooling water is supplied to the cooling container accommodating the chemical reactor to cool the copolymer resin obtained in the step of injecting (S145). The cooling container is a hot water container having a volume larger than the volume of the chemical reactor. Preferably, the copolymer resin is maintained at a low temperature for about 2 hours, and the quality of the copolymer resin can be checked while cooling the copolymer resin.

The copolymer resin produced through the step S141 to S145 is a low viscosity asphalt emulsion which is obtained by heating and emulsifying blown asphalt or modified asphalt, and is excellent in adhesion, moisture-proofing ability, antibacterial and exponential properties, To prevent separation of the concrete structure from the crack repair surface, as well as to prevent the corrosion of the inner reinforcement of the concrete, thereby enhancing the reinforcement of the structure. In addition, the copolymer resin has a low viscosity and has an effect of being deeply seated in a cracked region. It has elasticity and behaves in conformity with the structure, and reinforces concrete durability by filling cracks by elastic force. In addition, the copolymer resin is excellent in heat resistance, cold resistance and impact resistance and has an advantage that it can be applied on a wet surface and has an effect of protecting a structure from salt corrosion because of its excellent chemical erosion property. By using the copolymer resin In the case of repairing cracks, it is effective to shorten the working time because it is completed within about 5 hours.

FIG. 3 is a cross-sectional view illustrating the structure of the support member 10 attached to the cracked region in step S120 shown in FIG. 1 and the structure of the crack repairing apparatus 20 inserted into the support member 10 in step S130.

Referring to FIG. 3, in step S120, the support member 10 attached to the crack part supports the support member 10 so that the crack repair device 20 can be fixed perpendicular to the crack surface. The support member 10 includes a support plate 13 for fixing the support pipe 11 to the cracked portion and a support pipe 11 into which the cylinder 100 of the crack repairing apparatus 20 is inserted.

The support plate 13 passes through a circular center hole for injecting the copolymer resin injected into the cracks in the steps S150 and S160 and a sealant applied on the bottom surface of the support plate 13 to the upper surface of the support plate 13 A plurality of perforation holes are formed around the center hole for application. A support tube 11 is installed in the center hole and a cylinder 100 of the crack repairing apparatus 20 is inserted into the support tube 11 so that the copolymer resin injected through the crack repairing apparatus 20 is injected into the center hole And is injected into the crack region. In step S120, the sealing agent is applied to the lower surface of the support plate 13 closely attached to the cracked part, and the support plate 13 is attached to the cracked part by the adhesive force of the applied sealing agent. At this time, A sealing agent is applied to the upper surface of the support plate 13 through the plurality of through holes. A circular protruding ring 15 is formed around the center hole formed in the support plate 13 of the support member 10 so that the center hole is not clogged by the sealant applied to one surface of the support plate 13. [ It is preferable that the center hole is formed at the center of the support plate 13, and the support plate 13 is preferably circular.

The support tube 11 is installed perpendicularly to the center hole of the support plate 13 and the insertion portion 110 of the cylinder 100 is inserted for injecting the copolymer resin into the cracked portion. The inserting portion 110 is tightly inserted into the supporting tube 11 so that the copolymer resin injected through the cylinder 100 does not flow out. Both ends of the support tube 11 are penetrated so that the cylinder 100 is inserted and the copolymer resin is injected into the cracked portion.

Referring to FIG. 3, in step S130, the crack repairing apparatus 20 inserted into the support member 10 passes the copolymer resin injected by the injector, stores the copolymer resin, and injects low pressure into the crack site. The crack repairing apparatus 20 comprises a cylinder 100 through which a copolymer resin is injected to a crack site and a storage tank 200 for injecting the copolymer resin into a crack at a low pressure.

The cylinder 100 is inserted into the supporting member 10 attached to the cracked portion and passes through the copolymer resin as a hollow form so that an injector for injecting the copolymerized resin can be inserted, (110) inserted tightly into the body (11); An injection port 130 into which an injector for injecting the copolymer resin is inserted; And a connection passage 150 communicating with the storage tank 200 so that the copolymer resin is stored in the storage tank 200. Since the injection port 130 is located on the other side of the insertion unit 110, one side of the hole passing through the cylinder 100 is located inside the support member 10, and the other side of the hole The injector is inserted. The connection passage 150 is formed on the side of the cylinder 100 and communicates with the storage tank 200.

An injection rubber 170 is installed in the injection port 130 of the cylinder 100 to block the resin injected into the cylinder 100 from flowing out of the cylinder 100. The injected rubber 170 has a stopper 171 for inserting and fixing the injected rubber 170 into the injection port 130 and a cutter 171 cut out when the injector is inserted and when the injector is removed, A cutout 173 for blocking the injection port 130 is formed so as not to flow. A specific shape of the cutout portion 173 viewed from the direction "A ", which is the direction in which the injector is inserted into the injected rubber 170, will be described later with reference to FIG.

The storage tank 200 is formed with a storage section 230 for storing the copolymer resin injected into the insertion tube 31 communicating with the connection passage 150 of the cylinder 100 and the insertion tube 31. The insertion tube 31 may be installed in the connection passage 150 of the cylinder 100 and may be inserted in a closed state in some cases. A scale for confirming the injection amount of the copolymer resin injected into the storage tank 200 is displayed on the outer circumferential surface of the storage part 230. If it is confirmed that the copolymer resin is injected in step S170, . The storage unit 230 is formed at one side of the insertion tube 31 at an angle with the insertion tube 31. The cylinder 100 is vertically inserted into the support pipe 11 vertically installed on the crack maintenance surface and the cylinder 100 is installed in the side of the cylinder 100, The tank 200 is at an angle with the ground. At this time, in addition to the expansion force of the compressed air inside the storage part 230, the copolymer resin moves to the cracked part by the load of the copolymer resin stored in the storage part 230.

The crack repairing apparatus 20 includes a cylinder cap 300 tightly fixed to the outer circumferential surface of the cylinder 100. A detailed description of the cylinder cap 300 will be given later with reference to Fig.

The cylinder 100, the storage tank 200 and the support member 10 of the crack repairing apparatus 20 are made of a polyethylene material which is easy to process as a synthetic resin and are made of a rubber, polypropylene or metal, It is economical and recyclable.

4 is a view for explaining the shape of the cutout portion 173 more specifically when the injected rubber 170 shown in Fig. 3 is viewed from the direction of "A ".

Referring to FIG. 4, the incision 173 of the infusion rubber 170 is incised in a cross shape. At this time, the injected rubber 170 is made of natural rubber, artificial rubber, latex or silicone having elasticity, and is preferably formed of epilene propylene rubber. When the injector is inserted into the incision 173 of the injected rubber 170, a gap through which the copolymer resin can be injected is cut. When the injector is removed, the injector 130 is contracted to its original shape by the elastic force to seal the injection port 130. Accordingly, after the copolymer resin is injected into the crack repairing apparatus 20 and the injector is removed, as described above, the air contained in the storage portion 230 of the storage tank 200 is compressed, thereby increasing the pressure, The copolymer resin stored in the storage tank 200 is moved to the cracked region by the low pressure resin, so that the copolymer resin can be injected into the cracked region at a low pressure.

5 is a sectional view for explaining the shape of the cylinder cap 300 and the cylinder 100 of the crack repairing apparatus 20 shown in FIG.

5, the crack repairing apparatus 20 includes a cylinder cap 300 for fixing the injection rubber 170 to the injection port 130 of the cylinder 100. The cylinder cap 300 is tightly engaged with the stopper 171 of the injection rubber 170 and the outer circumferential surface of the cylinder 100 and surrounds the outer circumferential surface of the stopper 171 and the cylinder 100. The cylinder cap 300 is formed with a plurality of locking protrusions 310 along the inner circumferential surface of the cylinder cap 300 contacting the outer circumferential surface of the cylinder 100, (Not shown). The cylinder 100 has a plurality of engaging jaws 190 formed along the circumference of the outer circumferential surface of the cylinder 100 in which the cylinder cap 300 is in close contact with the plurality of engaging protrusions 310, And the outer circumferential surface of the cylinder 100 are firmly coupled to each other.

6 is a flowchart showing each step of a crack repairing method of a concrete structure using a copolymer resin according to another embodiment of the present invention.

Referring to FIG. 6, the waterproofing and crack repairing method of a concrete structure using a modified asphalt emulsion containing a blanket asphalt and a polymer latex resin according to the present invention is characterized in that at first, (S200). The predetermined interval L is preferably 20 cm, but the present invention is not limited thereto and can be adjusted depending on the width of the crack or the depth of the crack. At this time, it is preferable that the insertion hole is perforated to a size slightly larger than the outer diameter of the insertion cylinder 31 of the support member 30 so that the support member 30 to be described later can be inserted.

After the step S200, the surface of the crack is treated, sprayed with air or sprayed with water to remove the dust (S210). At this time, it is preferable to perform a surface treatment with a radius of about 10 cm around the cracked portion using a grinder or an iron brush. Thereafter, air is injected at a high pressure using an air compressor or an air gun to remove the dust so as to increase the adhesion of the sealing agent. If the dust is removed by spraying with water, dry the surface of the crack and the surrounding concrete sufficiently.

After the step S210, the support member 30 is inserted into the insertion hole drilled in the step S200 (S220). A detailed description of the support member 30 will be given later with reference to Fig.

After step S220, a sealing agent is applied or a strong adhesive tape is attached (S230), except for a portion where the supporting member 30 is inserted into the insertion hole in step S220 along the cracked part. At this time, the sealing agent can be applied using Hera, and the mixing ratio of the sealing agent to the curing agent is preferably 2: 1. The curing time of the sealing agent is preferably 4 hours in terms of 200 g, and the curing time is preferably 6 hours in the room temperature. However, the curing time is not limited thereto and can be adjusted according to the working environment. The sealing agent and the strong adhesive tape have an effect of preventing the copolymer resin from flowing out to the outside through the repaired cracked portion after injecting the copolymer resin into the cracked portion.

After step S230, a crack repairing apparatus 20 including a hollow cylinder 100 and a storage tank 200 is inserted into the support member 30 attached at step S220 (S240). At this time, the cylinder 100 and the storage tank 200 have been described with reference to FIG. 3, and a detailed description thereof will be omitted.

After step S240, a copolymer resin composed of blown asphalt, tablet stripper, polymer latex resin, chlorinated paraffin, asphalt adhesive, cationic emulsifier, ethylene glycol and ammonium phosphate is prepared (S250). After the step S250, the injector containing the copolymer resin prepared in the step S250 is inserted into the cylinder 100 of the crack repairing apparatus 20 inserted in the step S240, and the copolymer resin in the injector is pressurized, The copolymer resin is injected into the storage tank 200 and the cracked portion of the apparatus 20 (S260). The injector inserted into the cylinder 100 is removed in step S260 and the copolymer resin injected into the storage tank 200 of the crack repair apparatus 20 is supplied to the air pressure of the storage tank 200 And moves to the cracked region (S270). After the step S270, it is checked whether the copolymer resin stored in the storage tank 200 has completely moved to the cracked region. If all of the copolymer resin has moved, the injector containing the copolymer resin is reinserted into the cylinder 100, And then injected into the storage tank 200 and the cracked portion of the crack repairing apparatus 20 (S280). If the injected copolymer resin is cured after step S280, the crack repairing apparatus 20 inserted in the support member 30 in step S240 and the support member 30 inserted in the crack site in step S220 are removed S290). After step S290, the sealant applied along the crack is removed in step S230, and the crack is closed using the finish (S300). The process of step S250 is the same as step S190 of step S140 described above with reference to FIG. 1, and the process of preparing the copolymer resin prepared in step S250 is described in detail with reference to FIG. 2. In step S240, The crack repairing apparatus 20 has been described above with reference to FIGS. 3 and 5, and thus a detailed description thereof will be omitted.

FIG. 7 is a cross-sectional view showing the structure of the support member 30 inserted in the cracked region in the step S142 shown in FIG.

Referring to FIG. 7, the supporting member 30 inserted in the cracked region in step S142 is another embodiment of the supporting member 10 shown in FIG. 3, in which the crack repairing apparatus 20 is perpendicular to the cracked surface And supports the support member 30 so as to be fixed. The support member 30 supports the cylinder 100 so that the insertion portion 110 of the cylinder 100 is inserted perpendicularly to the surface of the crack 100. The support member 30 is inserted into a hollow insertion cylinder A locking groove 33 for guiding the inserting cylinder 31 to be inserted at a predetermined depth with respect to the cracked portion and a thread 35 for inserting and fixing the inserting cylinder 31 into the cracked portion are formed . An insertion passageway 37 is formed in the center of the insertion tube 31 so that the resin can be injected more easily into the cracked portion than the diameter and length of the insertion portion 110 of the cylinder 100. The insertion tube 31 is inserted and fixed in the cracked portion by threading 35 formed on the outer circumferential surface of the insertion tube 31 to the cracked portion. The latching groove 33 inserts the insertion tube 31 at a predetermined depth so that the support member 30 is inserted into the cracked portion but not collapsed at the cracked portion. If the distance between the cracks on the surface to be cracked is smaller than the diameter of the support member 30, the support member 30 is punctured in step S200 and the support member 30 It is possible to repair and reinforce the cracked portion.

Examples and comparative examples of the copolymer resin injected into cracks by the waterproofing and crack repairing method of the concrete structure using the modified asphalt emulsion containing the blown asphalt and the polymer latex resin according to the present invention shown in FIG. 1 or 6 (%) Of the copolymer resin are shown in Table 1 below.

ingredient Example Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Bleached asphalt 40 35 40 40 35 40 35 Synthetic butadiene rubber - 5 17 - 8 - 5 Tablet remover 30 30 30 - 30 30 27 Polymer latex resin (SBR) 17 17 - 47 17 17 17 Chlorinated paraffin 3 3 3 3 - - 3 Aromatic petroleum resin - - - - - 3 3 Asphalt Adhesive 3 3 3 3 3 3 2 Cationic emulsifier 3 3 3 3 3 3 3 Ethylene glycol 2 2 2 2 2 2 3 Anonium phosphate 2 2 2 2 2 2 2 Sum(%) 100 100 100 100 100 100 100

As a test method of the Korean Industrial Standard, the penetration degree was KS F 2252, the flow rate was KS F 8502, and the softening point was KS F 2010, KS F 4934 for low temperature contact, KS F 4052 for heat stability, KS F 2451 for absorption rate, KS F 4041 for slump flow, KS F 4936 for accelerated weatherability test and KS F 2561 for rust resistance The results are shown in Table 2 below. The comparative examples were produced through the same manufacturing process as that of the example except for the components and the composition ratio of the copolymer resin.

Test Items unit Example Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Test Specification Intrusion
(25 DEG C, 100 g, 5 sec) - 70 73 85 72 76 74 71 KS F 2252 Flowchart / Workability mm 1.2 1.4 1.6 2.3 2.6 3.5 4 KS F 8502 Softening point ℃ 95 97 112 100 98 115 115 KS F 2010 Low temperature contact property
(18 ° C, 5 cycles)
- Good Good Good Good Good Good Good KS F 4934 Heat stability / compatibility - Good Good Good Good Good Good Good KS F 4052 Oil painting - Good lack Good lack Unresolved Unresolved Unresolved - Absorption rate % 0.09 0.1 0.07 0.13 0.25 0.12 0.13 KS F 2451 Slump-flow cm 280 270 275 250 262 271 270 KS F 4041 Housework time (min) 50 60 55 65 70 55 70 - Accelerated weathering test 5000hr clear clear Surface crack Phenol phenomenon Surface peeling Stain occurrence Phenol phenomenon KS F 4936 Antirust / Antimicrobial % 98 95 92 96 97 87 90 KS F 2561

In Table 2, in Comparative Example 2, a copolymerized resin prepared by introducing a synthetic butadiene rubber instead of the polymer latex resin was used as a numerical value indicating the length of penetration of a needle specified at 25 DEG C and 100 g load into the copolymer resin, The intrinsic property, which indicates the hardness of the reinforcing liquid, was 85, which is a considerably higher value than the examples, and it is expected that the durability and reinforcement of the concrete structure will be lowered due to the low temperature sensitivity and strength of the copolymer resin as the reinforcing liquid. As a result, the flowability of the copolymer resin of Comparative Example 2 is also 1.6 mm, which means that the adhesion to the cracked concrete portion having a high numerical value is also low, and as a result, the reinforcing property of the structure is expected to be lowered. Also, surface cracking occurred in the accelerated weathering test, which is considered to be inadequate as a reinforcing solution for concrete structures.

In Comparative Example 5, the copolymer resin prepared by introducing aromatic petroleum resin instead of chlorinated paraffin had a rust-inhibiting property of 87%, which is not very good, and the numerical value of flow properties is as high as 3.5 mm. And the long-term durability of concrete is not expected to be good. Also, it is confirmed that it is a reinforcing liquid for repairing cracks in concrete due to the high softening point, low workability, only rusting resistance of 87% and unevenness in accelerated weathering test.

In the case of Comparative Example 3, a copolymer latex resin was prepared in the form of a polymer latex resin in an amount of 47% instead of the tablet removing agent. In this case, the flow rate was 2.3 mm, which indicates that the degree of emulsification was insufficient. As a result of the absence of the tablet release agent injected into the cracks to reduce the surface damage, the accelerated weathering test resulted in a phenol phenomenon, and the corrosion resistance of the reinforced concrete inside the concrete structure is likely to be high . In addition, the slump flow test value is 250 cm, the workability is poor, and the water absorption rate, which is the ratio of the water absorption amount of the material containing the waterproofing material to the water absorption amount of the material not containing the waterproofing material, is 0.25% As a result of the surface peeling phenomenon as a result of the high and accelerated weathering test, it can be confirmed that the tablet removing agent component strengthens the reinforcing and waterproofing property in repairing and waterproofing the concrete cracks.

In the case of Comparative Example 4, the copolymerization resin prepared by adding 35% by weight of blown asphalt and a synthetic butadiene rubber instead of chlorinated paraffin had a high flow rate of 2.6 mm and a delay in pot life than in Examples, resulting in poor workability can confirm.

In Comparative Example 1 in which 35% by weight of blown asphalt was charged and synthetic butadiene rubber was added, the emulsion was insufficiently emulsified and the invasion and flow rate were raised to a certain extent. As a result, the elasticity was strong and the heat resistance was excellent, It can be confirmed that the blown asphalt component which is the main component of the copolymer resin penetrates into the crack part of the concrete to strengthen the durability and waterproofness of the concrete.

In the case of Comparative Example 6 where 35% by weight of blended asphalt was charged and the synthetic butadiene rubber and aromatic petroleum resin were charged, the flow rate was 4 mm, the water absorption rate was high, the pot life was long and the phenol phenomenon occurred, It can be confirmed that the reinforcement liquid is inadequate.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. The present invention is not limited by the examples and the accompanying drawings.

10: Support member
11: Support tube
13:
20: Crack repair device
30: Support member
31: Insertion barrel
100: Cylinder
110:
130: inlet
150: connection passage
170: injection rubber
200: Storage tank
210: insertion path
230:
300: Cylinder cap

Claims (6)

A cleaning step of treating the cracked portion of the concrete structure and spraying air or spraying water on the cracked portion to remove dust;
A sealing step of applying a sealing agent or attaching a strong adhesive tape at a predetermined interval (L) except for a site where a plurality of supporting members are to be inserted along the cracked part;
Attaching a supporting member to the cracked portion to which the sealing agent is not applied or to which the strong adhesive tape is not attached in the sealing step;
A crack repairing device inserting step of inserting a crack repairing device composed of a hollow cylinder and a storage tank into the support member attached in the step of attaching the support member;
3% by weight of asphalt binder, 3% by weight of an asphalt adhesive, 3% by weight of a cationic emulsifier, 2% by weight of ethylene glycol, and 2% by weight of an ammonium phosphate A stiffener preparation step of preparing a copolymer resin comprising
The injector in which the copolymer resin prepared in the stiffener preparing step is inserted is inserted into the cylinder of the crack repairing apparatus inserted in the crack repairing apparatus insertion step and the copolymer resin in the injector is pressurized to the storage tank and the crack part A high-pressure injection step of a copolymer resin injecting the copolymer resin;
A copolymer resin low pressure injection step of removing the injector inserted in the high pressure injection step of the copolymer resin and moving the copolymer resin injected into the storage tank of the crack repairing apparatus to the crack part by the air pressure inside the storage tank;
If the all of the copolymer resin stored in the storage tank has moved to the crack region and if all of the copolymer resins have moved, the injector containing the copolymer resin is reinserted into the cylinder, and the copolymer resin is introduced into the storage tank and the crack region of the crack repair apparatus A step of injecting a copolymer resin to be injected;
A removing step of removing the crack repairing device and the supporting member after the injected copolymer resin is cured; And
A waterproofing and crack repairing method of a concrete structure comprising a step of removing the sealing agent or the strong adhesive tape and finishing a cracked portion using a finishing material.
A perforation step of perforating an insertion hole at a predetermined interval (L) in a crack part of a concrete structure;
A cleaning step of surface-treating the cracked portion and spraying air or spraying water on the cracked portion to remove dust;
A supporting member inserting step of inserting a supporting member into the insertion hole drilled in the perforating step;
A sealing step of applying a sealing agent or attaching a strong adhesive tape except a portion where the supporting member is inserted along the cracked portion;
Inserting a crack repairing device including a hollow cylinder and a storage tank into the support member inserted in the support member inserting step;
3% by weight of asphalt adhesive, 3% by weight of an asphalt adhesive, 3% by weight of a cationic emulsifier, 2% by weight of ethylene glycol, and 2% by weight of an ammonium phosphate. Preparing a reinforcing material for preparing a copolymer resin comprising a weight;
The injector in which the copolymer resin prepared in the stiffener preparing step is inserted is inserted into the cylinder of the crack repairing apparatus inserted in the crack repairing apparatus insertion step and the copolymer resin in the injector is pressurized to the storage tank and the crack part A high-pressure injection step of a copolymer resin injecting the copolymer resin;
A copolymer resin low pressure injection step of removing the injector inserted in the high pressure injection step of the copolymer resin and moving the copolymer resin injected into the storage tank of the crack repairing apparatus to the crack part by the air pressure inside the storage tank;
If the all of the copolymer resin stored in the storage tank has moved to the crack region and if all of the copolymer resins have moved, the injector containing the copolymer resin is reinserted into the cylinder, and the copolymer resin is introduced into the storage tank and the crack region of the crack repair apparatus A step of injecting a copolymer resin to be injected;
A removing step of removing the crack repairing device and the supporting member after the injected copolymer resin is cured; And
A waterproofing and crack repairing method of a concrete structure comprising a step of removing the sealing agent or the strong adhesive tape and finishing a cracked portion using a finishing material.
3. The method according to claim 1 or 2,
The copolymer resin to be prepared in the stiffener preparation step may be,
An emulsifying step of adding a cationic emulsifying agent and a polymer latex resin while heating the bloW asphalt to 90 ° C to 120 ° C in a chemical reactor and stirring the chemical reactor at a low speed;
A mixing step of adding chlorinated paraffin and ammonium phosphate to the chemical reactor and mixing the chlorinated paraffin and ammonium phosphate with the emulsified asphalt obtained in the emulsification step;
A condensation polymerization step in which the tablet remover is added to the chemical reactor and heating at 95 ° C to 105 ° C;
An input step of injecting an asphalt adhesive and ethylene glycol into the chemical reactor; And
And a cooling step of cooling the copolymer resin obtained in the charging step by injecting cooling water into a cooling vessel for accommodating the chemical reactor, wherein the waterproofing and crack repairing method of the concrete structure is manufactured.
The method of claim 3,
Wherein the crack repairing device inserted in the crack repairing device insertion step comprises:
The cylinder is provided with an insertion portion to be inserted into the support member, an injection port which is located on the other side of the insertion portion and into which the copolymer resin is inserted and a copolymer resin injected from the injector through the injection port is stored in the storage tank A connection passage communicating with the storage tank is formed,
Wherein the storage tank has an insertion passage communicating with the connection passage, and a storage section for storing the copolymer resin injected from the insertion passage,
The injector is provided with a stopper for inserting and fixing the injection port of the cylinder into the injection port and an injection rubber section cut off when the injector is inserted and a cutout for blocking the injection port to prevent the copolymer resin from flowing out of the cylinder when the injector is removed ,
Further comprising a cylinder cap which surrounds the stopper and an outer circumferential surface of the cylinder so that the injected rubber is fixed to the injection port of the cylinder and has a plurality of engagement protrusions around the inner circumferential surface contacting the outer circumferential surface of the cylinder,
Wherein the cylinder of the crack repairing device is formed with a plurality of engaging jaws around an outer circumferential surface of the cylinder cap which is engaged with the plurality of engaging jaws to closely contact the cylinder cap.
The method according to claim 1,
Wherein the support member attached in the step of attaching the support member comprises:
A circular center hole for injecting the copolymer resin injected at the high-pressure injection step of the copolymer resin and the low-pressure injection step of the copolymer resin into a cracked portion, and a plurality of perforation holes for passing the sealant applied on the bottom surface of the pedestal Pedestal; And
And a support pipe vertically installed in the center hole of the pedestal and into which the inserted portion of the cylinder is inserted to inject the copolymer resin into the cracked portion.
3. The method of claim 2,
The support member inserted in the supporting member insertion step is inserted into a crack portion and is inserted into a hollow insertion portion of the insertion portion of the cylinder for injecting the copolymer resin into a crack portion, And a thread is formed along the circumference of the outer peripheral surface of the insertion cylinder.

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