KR101336673B1 - Concrete repair material and mending method using concrete - Google Patents

Abstract

In the present invention, the first package is manufactured in a factory of 26 kg of Portland cement, 26 kg of alumina cement , 38 kg of silica sand, 3 kg of sodium carbonate, 2 kg of lignin sulfonic acid salt, 2 kg of sodium silicate, and 5 kg of sodium silicate. After mixing 10 kg of alcohol, 88 kg of acrylic resin, 1 kg of surfactant, and 1 kg of dispersant, add 1,000 kg of water to the mixture of 100 kg, and then prepare the second package in a separate container in units of 0.5 kg, 1 kg, and 2 kg. Chipping breakers on the concrete road by chipping 7 cm, removing residue and foreign matter with an air compressor, installing wire mesh on the cracks and damaged parts, and preparing the first and second pavements prepared above to 10: 1 by weight. The present invention relates to a concrete section cross-sectional repair agent that is filled and repaired by mixing in the field and damaged, and a repair method using the same.

Description

Cross section repair agent for concrete part and repair method using same {CONCRETE REPAIR MATERIAL AND MENDING METHOD USING CONCRETE}

The present invention has been developed to improve the strength of the surface of concrete roads, concrete structures, soundproof walls, walls in a hurry, and to improve the strength of the surface strength lowering part, and to penetrate and enhance the adhesion and penetration of microcracking parts to enhance penetration. As a composition which can be formed, concrete section sectional repair agent that can increase the surface strength of concrete and reduce wear and repair method using the same.

In general, a method of repairing defects on the surface of cement concrete pavement, concrete structure sidewalls, soundproof walls, and walls to remove defects, or to form a separate overlay layer so that defects do not receive direct vehicle loads. And there may be a way to suppress the development of breakage of the defect.

Regarding the concave part of cement concrete road, recovery after construction, and crushing, etc., the original road condition should be restored in consideration of the recovery range, size and condition of damage.

Here, the road pavement structure is composed of a roadbed and subgrade layer, a barrier layer and an in-phase prevention layer, an auxiliary base layer and a base layer, an intermediate layer, and a surface layer, which are prepared from the bottom to the top.

The construction method is also different for each floor. In general, the intermediate layer and the surface layer are made of pavement using materials such as hot mixed heating asphalt mixture (hereinafter referred to as hot asphalt) and cement for road paving.

In general, the emergency repair agent for concrete roads is used to prevent the breakage of concrete. And depending on the material, this may be enhanced by forming a film on the surface. In addition to such protection and waterproofing action, the repair composition also acts to strengthen the surface when it has a rapid curing property to secure rigidity.

However, the conventional concrete emergency repair agent has a long time to harden, tends to re-break when a long-term use, such as a large amount of traffic, such as a truck after construction, has been a lot of research to solve this problem.

For example, in Korean Patent Publication No. 1010966200000 (20111214), a circular cut groove 102 is formed around the damaged portion 101 of the concrete road 1 to form the concrete road 1 and the damaged portion 101. ) Is divided into a cut groove 102 so that the damaged portion 101 and the circumference of the road (1) is formed into a cylinder 105 and the reinforcement pipe 103 is introduced into the inside of the cut groove 102 and the reinforcement pipe Cylinder 105 inside the incision groove 102 by repairing the concrete road 1 by filling the gap between the 103 and the main wall of the incision groove 102 and the upper part of the reinforcement pipe 103 with the filler 104. And filling the reinforcement pipe 103 and the filler material 104 into the incision groove 102 to minimize the amount of cuts in the road damage portion, and the reinforcement pipe 103 has a circumference of the cylinder 105. The emergency crack repair method for concrete roads that can support and maintain sufficient supporting strength is disclosed.

Korean Patent Publication No. 1009671800000 (20100623) discloses a fluid (air, water, oil, etc.) or a fluid that can withstand pressure when paving a road by combining two or more concrete panels together. Road concrete panel, road pavement method and road repair method using an expansion bag that is inflated by the

In Publication No. 1010747590000 (20111012), the damaged part of the concrete road is cut and removed, in consideration of the physical characteristics of the concrete after cutting the curved surface using a hand cutter so that the cutting surface is not angled (corners), By filling the repaired part with the curved part, it prevents secondary damage at the repaired part, and also repairs by cutting only the damaged part of the concrete road to the curved surface, thereby reducing the repair area and minimizing the cost and repairing a lot in a short time. The concrete road repair method is disclosed to minimize the amount of waste generated,

Patent No. 10-0831688 discloses a main body and a hardener in which a main body and a curing agent are separately produced in a two-part type, wherein the main body is a polyether polyol resin, a polyether-based amine polyol resin having two amine groups, and a poly having three amine groups. It comprises an ether-based amine polyol resin, an amine compound, a plasticizer, wherein the curing agent has been described crack repair agent on asphalt or concrete pavement, characterized in that comprises 1.3-butanediol, isocyanate,

Publication No. 10-0089579 discloses emergency road repairs comprising 23-30% cut back asphalt, 51-62% tar for road paving, 11-14% acrylic modified butadiene polymerizer, and 4-5% ammonium chloride. Emergency road repair materials are disclosed, characterized in that the admixture is prepared by mixing the crushed aggregate and Portland cement,

In Korean Laid-Open Patent Publication No. 1020030071143 (20030903), the shear shear cracks and breakages of the slab are checked, and lines are formed by using a crack and a slit, and the broken parts are cut to about 1/4 of the slab thickness. The width is about one third of the slab thickness. Chipping the cut and cleaning the debris, V-cutting at 45 ° along the crack centerline, about 2-3 cm wide, using a high-pressure vacuum inhaler and a wire brush to clean and drill the drill to inject the crack injection material. Then, insert the injection table (packer) for injection, apply a sealing adhesive material to the cut portion V cut part once, seal the fastening sealing material, and after 30 minutes, inject the crack injection material using a high-pressure injector. Apply the old and new adhesive to the chipping area once, fill it with concrete impregnated molding material, and then clean up the upper part, draw the line for tinning, form the tinning, finish the repair work, and finish the vehicle. Management road concrete road slab shear crack breakage improvised repair repair method characterized in that the opening is described,

Publication No. 2003-74180 is uniformly applied with a composition comprising an inorganic curing additive consisting of sodium carbonate, potassium chloride, ammonium chloride, borax and distilled water, a surfactant containing sodium silicate, silicon or a fluorine component, and distilled water. And, there is described a composition for concrete inorganic hardening additives and concrete surface treatment method comprising the step of uniformly applying nitric acid, sulfuric acid or citric acid on the applied surface,

Publication No. 2003-74180 is uniformly applied with a composition comprising an inorganic curing additive consisting of sodium carbonate, potassium chloride, ammonium chloride, borax and distilled water, a surfactant containing sodium silicate, silicon or a fluorine component, and distilled water. And, it can be seen that the composition for concrete inorganic hardening additives and concrete surface treatment method comprising uniformly applying nitric acid, sulfuric acid or citric acid on the applied surface.

1. Domestic registered patent publication No. 1010966200000 2. National Registered Patent Publication No. 1009671800000 3. National Registered Patent Publication No. 1010747590000 4. National Registered Patent Publication No. 10-0831688 5. Domestic registration patent publication No. 10-0089579 6. Korean Patent Publication No. 1020030071143 7. Korean Patent Publication No. 2003-74180 8. Korean Patent Publication No. 2003-74180

Conventional techniques are not only damaged but also large-scale cutting and crushing to the vicinity of the damaged, reconstruction factor occurs,

It is a problem that the present invention is to solve the problem of traffic congestion by randomly mixing the material in the field does not equalize the quality, and therefore the traffic opening time after construction for a long time.

The present invention, in order to solve the above problems, the patent application No. 10-2004-0029049, filed by the present applicant, the name of the invention; Crack preventing method and composition used therein, Patent Application No. / date 10-2004-0075597 (Sept. 21, 2004), the name of the invention; Concrete Surface Hardener, Patent Application No./Date 10-2005-0091923 (September 30, 2005) Concrete surface hardening and deterioration (solar and chemical corrosion) construction method, Patent Application No. 10-2008-0023708, the name of the invention; Concrete Sealer and Patent Application No. 10-2008-0111612 (Nov. 11, 2008); As an improvement of the concrete surface drop construction method,

Portland cement 26kg, alumina cement 26kg, silica sand 38kg, sodium carbonate 3kg, a mixture of 5kg lignin sulfonic acid salt 2kg, sodium silicate 5kg separately 5kg 10kg, 20kg units of the first package was manufactured in the factory, then 10kg polyvinyl alcohol, After mixing 88kg of acrylic resin, 1kg of surfactant, and 1kg of dispersant, add 1,000kg of water to 100kg of mixture, and then manufacture the second package in a separate container in 0.5kg, 1kg, 2kg, unit, and then Chipping Breca chipping the damaged part of 7cm, remove the residue and foreign matter with air compressor, install the wire mesh on the cracked and damaged parts, and the first package and the second package prepared in the above 10: 1 by weight in the field It is possible to solve the problem to be solved by the present invention to provide a concrete section cross-sectional repair agent and a repair method using the same to fill and repair the damaged parts. It is.

The present invention by cutting the construction to the maximum when damaged, to prevent damage caused by excessive expansion and cutting, and by using a packaged emergency repair material, after manufacturing all the materials in the factory, simply mixing and spraying and injecting in the field By doing so, the uniformity of construction and the simplicity of construction and early traffic opening have the advantage of increasing congestion resolution and the resulting economic effect.

In order to achieve the above object, the present invention provides a first package of 5 kg, 10 kg, and 20 kg of a mixture of Portland cement 26 kg, alumina cement 26 kg, silica sand 38 kg, sodium carbonate 3 kg, sodium lignin sulfonic acid salt 2 kg, and sodium silicate 5 kg. Was prepared at the factory, and then 10 kg of polyvinyl alcohol, 88 kg of acrylic resin, 1 kg of surfactant, and 1 kg of dispersant were added and 1,000 kg of water was added to the mixture of 100 kg, and then 0.5 kg, 1 kg, 2 kg, in a separate container. After manufacturing the second pavement in the factory, chipping the damaged part of the concrete road with chipping breca 7 cm, removing residue and foreign matter with an air compressor, and installing the wire mesh on the cracked and damaged part, and the first pavement prepared above Cross section repair agent for concrete part which repairs the upper surface evenly by mixing the second packing on site with weight of 10: 1 and filling in the damaged part and its It relates to the method repair yonghan

For the first package of the present invention, the portland cement or the alumina cement is used as an inorganic adhesive, and the alumina cement serves as a swelling agent, and the economic or cement properties of the port cement are 26 kg and the alumina cement is 26 kg.

The silica sand of the present invention serves as a curing agent and is too hard when more than 38kg, too soft if less than 38kg 38kg is suitable.

The silicic acid-based compound of the present invention uses any one compound selected from sodium silicate, potassium silicate, lithium silicate, calcium silicate, and used to penetrate deeply into cracks and breaks of concrete roads. Strong and uneconomical, too little, the performance is degraded and 5 kg is preferred.

As the sensitizer of the present invention, the sodium lignin sulfonic acid salt is preferably too thin when the amount of the lignin sulfonate is more than 2 kg, and less than 2 kg.

Sodium carbonate used in the present invention is strong hygroscopicity of the white powder, more than 3kg is uneconomical, 3kg is suitable because the properties of sodium carbonate less than 3kg is lowered.

In the second packaging of the present invention, polyvinyl alcohol and acrylic resin are mixed at a ratio of 1: 9 by weight, and then 10 times of the mixture is diluted with water and used.

The polyvinyl alcohol of the present invention helps to adhere well to the surface of the construction during the construction of the waterproofing agent, evaporates at a low temperature to attract moisture, promotes the chemical reaction of the alkoxysilane, non-polar By polarizing a solvent composed only of hydrocarbon components, it is used to suppress the generation of static electricity without any additives.

If the amount of polyvinyl alcohol is greater than 10 kg in the second component, it adheres too well to the surface of the construction body, or is thinned, so that the moisture removal effect due to evaporation is large, and when used less than 10 kg, it does not adhere well to the surface of the construction body. On the other hand, since the waterproof layer is thicker and the moisture removal effect due to evaporation is less, the preferred amount is 10 kg of the total amount of the component.

The acrylic resin used in the present invention has a penetrating power and a deterioration inhibitor function, and any compound selected from methyl acrylate, ethyl acrylate, isobutyl acrylate, methyl methacrylate, ethyl methacrylate and acrylonitrile Use,

When the acrylic resin exceeds 88 kg, the penetration force is weakened, and when the acrylic resin is less than 88 kg, the penetration force becomes strong, but the adhesive force is weakened, and 88 kg is preferable.

The dispersant of the present invention uses 1 kg of any one compound selected from high-molecular weight condensed naphthalene sulfonic acid sodium salt and naphthalene sulfonic acid calcium salt,

Surfactant of this invention is a surfactant which has both a hydrophobic group and a hydrophilic group, and has a double bond which can participate in a radical reaction, Especially polyoxyalkylene alkenyl ether sulfate salt is preferable. Specifically, sulfoxy polyethylene glycol allyl ether, sulfoxy polypropylene glycol allyl ether, sulfoxy polybutylene glycol allyl ether, sulfoxy polyethylene glycol 2-butenyl ether, sulfoxy polypropylene glycol 2-butenyl ether, sulfoxy Polybutylene glycol 2-butenyl ether, sulfoxy polyethylene glycol 3-butenyl ether, sulfoxy polypropylene glycol 3-butenyl ether, sulfoxy polybutylene glycol 3-butenyl ether, sulfoxy polyethylene glycol 3-pen Tenyl ether, sulfoxypolypropylene glycol 3-pentenyl ether, sulfoxy polybutylene glycol 3-pentenyl ether, and the like, and neutralized with monovalent metals, divalent metals, ammonium salts and organic amines, alone or in combination thereof More than one species may be mixed and copolymerized,

1 kg of any one compound selected from sodium dodecylbenzene sulfonate, sodium laurate, polyoxyethylene nonylphenylether, nonylphenol ethoxylated phosphate ester,

The present invention will be described in detail with reference to the following Examples.

Example 1

First step

Portland cement 26kg, alumina cement 26kg, silica sand 38kg, sodium carbonate 3kg, lignin sulfonic acid sodium salt 2kg, sodium silicate 5kg was added to the first stirrer, stirred at 400RPM for 1 hour, mixed and packed in units of 5kg 10kg, 20kg Is manufactured at the factory,

After adding 1,000 kg of water to a 100 kg mixture of 10 kg of polyvinyl alcohol, 88 kg of acrylic resin, 1 kg of sulfoxypolyethylene glycol allyl ether, and 1 kg of naphthalene sulfonate calcium salt, it was added to a second stirrer and stirred, and then 0.5 kg, 1 kg , 2kg, packed in a separate container in units, the second package is manufactured at the factory,

Second Step

In order to minimize the damaged part of the concrete road, chipping the damaged part and chipping breca to the depth of the damaged part to 7Cm, remove the residue and foreign substances with air compressor, and install the wire mesh on the damaged part, and the first and second above the damaged part. After spraying the package with a 10g / cm 2 sprayer, the first package and the second package prepared above were mixed 10: 1 by weight in the field, and after 3 minutes, the damaged part was filled and the top surface was flattened. After that, after 1 hour and 30 minutes to dry the concrete road was opened to repair the concrete road so that vehicles pass.

Example 2

First step

Portland cement 26kg, alumina cement 26kg, silica sand 38kg, sodium carbonate 3kg, lignin sulfonic acid sodium salt 2kg, sodium silicate 5kg was added to the first stirrer, stirred at 400RPM for 1 hour, mixed and packed in units of 5kg 10kg, 20kg Is manufactured at the factory,

After adding 1,000 kg of water to a 100 kg mixture of 10 kg of polyvinyl alcohol, 88 kg of acrylic resin, 1 kg of sulfoxypolyethylene glycol allyl ether, and 1 kg of naphthalene sulfonate calcium salt, it was added to a second stirrer and stirred, and then 0.5 kg, 1 kg , 2kg, packed in a separate container in units, the second package is manufactured at the factory,

Second Step

In order to minimize the damaged part of the concrete road, chipping the damaged part and chipping breca to the depth of the damaged part to 7Cm, remove the residue and foreign substances with air compressor, and install the wire mesh on the damaged part, and the first and second above the damaged part. After spraying the package with a 10g / cm 2 sprayer, the first package and the second package prepared above were mixed 10: 1 by weight in the field, and after 3 minutes, the damaged part was filled and the top surface was flattened. After that, after 1 hour and 30 minutes to dry the concrete road was opened to repair the concrete road so that vehicles pass.

Concrete road section emergency repair agent of the present invention prepared as described above is the first pavement is composed of Portland cement 26kg, alumina cement 26kg, silica sand 38kg, sodium carbonate 3kg, lignin sulfonic acid salt 2kg, sodium silicate 5kg,

The second package is composed of 10 kg of polyvinyl alcohol, 88 kg of acrylic resin, 1 kg of surfactant, 1 kg of dispersant, and 1,000 kg of water.

It can be seen that the first package and the second package is 10: 1 by weight.

Experimental Example 1

Concrete section repair agent of Example 1 of the present invention obtained the following results according to the physical properties of the test result.

Report Number: TAS-027887 Date accepted: Feb 03, 2011

Representative: Kim, Jung-ae Test completion date: December 01, 2011

Company name: Hanil Pienti Co., Ltd.

Address: 420-5, Sujeong-ri, Kunbuk-myeon, Okcheon-gun, Chungbuk

Sample Name: Concrete Section Emergency Repair Material (P & T Motor Anycon)

Test result

Test Items unit Sample classification Results Test Methods Compressive strength (2 hours) MPa One 24.6 KS F 2405: 2010 Compressive strength (4 hours) MPa One 30.7 KS F 2405: 2010 Compressive Strength (7 Days) MPa One 60.2 KS F 2405: 2010 Flexural strength (2 hours) MPa One 3.84 KS F 2408: 2000 Flexural strength (4 hours) MPa One 5.12 KS F 2408: 2000 Flexural strength (7 days) MPa One 7.14 KS F 2408: 2000 Adhesion strength (4 hours) MPa One 1.5 KS F 2762: 2006 Adhesion strength (1 day) MPa One 1.6 KS F 2762: 2006 Adhesion strength (7 days) MPa One 1.9 KS F 2762: 2006 Dry shrinkage (length change rate: 7 days) % One 0.003 KS F 2424: 1995 (*) Thermal expansion coefficient (7 days) × 106 /
℃ One 14.6 AASHTO T 336-10 Modulus of elasticity (7 days) MPa One 23465 KS F 2438: 2002 Freeze thawing resistance (300CYCLE) % One 93 KS F 2456: 2008 Salinity Penetration Resistance Coulombs One 1629 KS F 2711: 2002 Scale resistance (A method) kg / ㎡ One 0.22 (m56 / m28 = 1.3, excellent) SS 13 72 44: 2005 Wear resistance mm One 0.68 ASTM C779 / C779M: 05 Condensation time (seconds) minute One 25 KS F 2763: 2007 Apparent density kg / ㎡ One 2405 KS F 2405: 2010

Experimental Example 2

As a result of repairing the concrete road according to Example 1 of the present invention, all of the following criteria were met (passed).

division Item Test standard standard Remarks Structural properties
(Structural
Characteristics) Compressive strength KS F 2405 21 MPa or more
(Open Time) Three / one set Flexural strength KS F 2408 3.15 MPa or more
(Open Time) Three / one set Bond strength KS F 2762 1.4 MPa or more
(Open Time) Three / one set Suitable properties
(Compatibility) Dry Shrinkage * KS F 2424 0.15% or less
(7 days from opening time) Three / one set Coefficient of Thermal Expansion ** AASHTO TP 60 4.0 ~ 20.0 × 10-6 / ℃
(7 days curing) Three / one set Modulus of elasticity ** KS F 2438 1.13 ~ 7.80 × 10⁴MPa
(7 days curing) Compression Steel Drawing Durability characteristics
(Durability) Salinity Penetration Resistance *** KS F 2711 2000 C or less
(7 days curing) 2 / set Freeze thawing resistance *** KS F 2456 More than 80%
(14 days curing) A law, two / 1 set,
300 cycles Scaling Resistance *** SS 13 72 44 A method Acceptable
Grade or higher (7 days curing) 56 cycles, 2ea / 1 set Abrasion Resistance **** ASTM C 779 2mm or less (30 minutes)
(7 days curing) Procedure B, 2/1 Other Opening time Presentation Review of pot life importance Presentation Formulation Design Data Human hazard Product specificity Presentation Workability Review

※ The standard of opening time of cemented carbide material shall be maintained for 4 hours unless otherwise specified. For non-cemented carbide materials, the test shall be based on 14-day curing specimens.

* Based on curing mortar dry for 24 hours to 14 days after pouring

** For materials out of range, test results according to ASTM C 884 method and conformity analysis review data (see Annex-1) should be presented.

*** Applies the same test method as cement concrete bridges and accepts scaling resistance after 56 cycles when the average peel amount (m56) is less than 1.00kg / m2 and m56 / m28 is less than 2.

**** The ASTM C 944 method can be used, in which case the criterion is 0.5 mm or less.

According to the present invention, by preventing the damage caused by excessive enlargement and the like, by using the packaged emergency repair material, after manufacturing all the materials in the factory, in the field by simply mixing, spraying and injecting, the uniformity of construction and construction The simple and early traffic opening provides concrete section sectional repair agent with congestion resolution and economic benefits, and repair method using the same.

Claims (2)

delete In the concrete road repair method using a concrete road section repair agent,
Portland cement 26kg, alumina cement 26kg, silica sand 38kg, sodium carbonate 3kg, lignin sulfonic acid sodium salt 2kg, sodium silicate 5kg was added to the first stirrer, stirred at 400RPM for 1 hour, mixed and packed in units of 5kg 10kg, 20kg Is manufactured at the factory,
After adding 1,000 kg of water to 100 kg of a mixture of 10 kg of polyvinyl alcohol, 88 kg of acrylic resin, 1 kg of surfactant, and 1 kg of dispersant, the mixture was added to a second stirrer and stirred, followed by 0.5 kg, 1 kg, and 2 kg, separately. The second package is manufactured at the factory by
2nd process
In order to minimize the damaged part of the concrete road, chipping the damaged part and chipping breca to the depth of the damaged part to 7Cm, remove the residue and foreign substances with air compressor, and install the wire mesh on the damaged part, and the first and second above the damaged part. After spraying the package with a 10g / cm 2 sprayer, the first package and the second package prepared above were mixed 10: 1 by weight in the field, and after 3 minutes, the damaged part was filled and the top surface was flattened. After, the concrete road repair method using a concrete road section repair, characterized in that the dry and repaired after 1 hour and 30 minutes.