KR101675325B1 - Concrete repair material and cross sectional concrete surface repair and recovery method using the same - Google Patents
Concrete repair material and cross sectional concrete surface repair and recovery method using the same Download PDFInfo
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- KR101675325B1 KR101675325B1 KR1020160017985A KR20160017985A KR101675325B1 KR 101675325 B1 KR101675325 B1 KR 101675325B1 KR 1020160017985 A KR1020160017985 A KR 1020160017985A KR 20160017985 A KR20160017985 A KR 20160017985A KR 101675325 B1 KR101675325 B1 KR 101675325B1
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- South Korea
- Prior art keywords
- weight
- concrete structure
- sand
- repair
- agent
- Prior art date
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
- C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/47—Oils, fats or waxes natural resins
- C04B41/474—Natural resins, e.g. rosin
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/483—Polyacrylates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5007—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing
- C04B41/5011—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing halogen in the anion
- C04B41/5012—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing halogen in the anion chlorides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5079—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/508—Aluminous cements
- C04B41/5081—Calcium alumino sulfate cements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The present invention relates to a method for preventing the deterioration of the load-bearing capacity and durability of a structural body due to progress of deterioration of concrete such as neutralization, There is no reaction and it is advantageous for prevention of salting of road facilities. There is no chemical reaction even with strong acid like sulfuric acid. It is advantageous for sewage treatment plant, wastewater treatment plant, sewage pipe repair and so on. It has tight porcelain combination body and ensures perfect watertightness It is advantageous for structures that behave like bridges by suppressing impact, vibration absorption and cracking due to the elasticity of elastic resin. It is a concrete section that is resistant to ultraviolet rays and resistant to weathering due to complete waterproof realization, Surface repair and section repair of concrete structures using restorative materials The purpose of the law is to provide.
According to an aspect of the present invention, there is provided a method of repairing and repairing a concrete structure using a curing agent for a concrete structure, comprising: chipping a deteriorated portion of a concrete structure;
Removing the rust of the reinforcing bar of the deteriorated portion;
Washing the rust removal portion of the reinforcing bar at a high pressure;
Applying a sphere reinforcing agent to the deteriorated portion of the high pressure cleaned concrete structure;
Applying a primer coating agent to the surface of the spherical reinforcing agent;
Applying a cross-sectional restorative to the surface of the primer coating;
Applying a primer coating agent to the surface of the cross-sectional restorative material;
(TiO 2 ) sol (sol), C 8 H 2 O 4 Si and (CH 3 ) 2 TiO 2 prepared in the presence of Ti [OCH (Cl 3 ) 2 ] 4 and (CH 3 ) 2 CHOH on the surface of the primer coating, 0.44 mol / l of a SiO 2 sol prepared by CHOH and 0.50 mol / ℓ of a ZnO sol prepared from Zn (C 2 H 3 O 2 ) 2, at least one metal ion selected from Ag, Zn and Cu And this was added to a solution containing 50% of TiO 2 sol, 40% of SiO 2 sol, 9% of ZnO sol and 1% of at least one metal ion selected from Ag, Zn and Cu Wherein the photocatalyst is coated with a predetermined thickness.
Description
The present invention relates to a method for repairing a surface of a concrete structure and a method for repairing the surface of the concrete structure using the above-mentioned method for repairing a concrete structure. Particularly, deterioration of concrete such as neutralization, The present invention relates to a method for repairing a concrete structure and a method for repairing an end surface of a concrete structure using a concrete structure cross-section repairing agent.
In general, the concrete structure is deteriorated due to the deterioration of concrete such as neutralization, deformation, and corrosion due to environmental factors and deterioration of durability of materials used. Therefore, the load-bearing capacity and durability of the structure are lowered and safety is lowered. It is required to properly repair and reinforce the deteriorated concrete in order to recover the section and improve the durability of the concrete.
Conventional techniques widely used for maintenance and reinforcement of concrete structures include epoxy resin mortar and polymer cement mortar.
Epoxy resin mortar is hard to cure at low temperature due to high temperature dependency at curing, because workability and working time vary depending on compounding ratio of the base and curing agent, and thermal expansion coefficient is about 2 to 4 times that of concrete. There is a disadvantage that the amount of deformation due to high temperature is large.
In addition, the polymer cement mortar is superior to the epoxy resin mortar in terms of the integration with the sphere. However, since the thickener is added to improve the adhesion of the repair material, the surface and friction force inside the transportation hose are increased during the machine construction using the spray equipment, The clogging is required to improve the workability because the molar discharge rate is decreased and the construction speed is lowered and the trowel workability is poor depending on the kind of polymer and the amount of addition, and the thickness of the casting is relatively thin.
SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a concrete structure which is deteriorated in bearing capacity and durability of a structural body due to deterioration of concrete such as neutralization, It is advantageous for prevention of salt corrosion in road facilities because there is no alkali aggregate reaction because it does not react with calcium chloride and does not have chemical reaction even with strong acid such as sulfuric acid. Therefore, it can be used in sewage treatment plant, wastewater treatment plant, It is advantageous for structures acting like bridges by suppressing shock, vibration absorption and cracking due to the elasticity of elastic resin, and it is advantageous for a structure that behaves like a bridge. Realization of the damage caused by the East Sea in the source, strong against ultraviolet rays, To provide concrete structures surface maintenance and repair cross-section method using a concrete structure with strong recovery section it is an object of the castle.
According to an aspect of the present invention, there is provided a method of repairing and repairing a concrete structure using a curing agent for a concrete structure, comprising: chipping a deteriorated portion of a concrete structure; Removing the rust of the reinforcing bar of the deteriorated portion; Washing the rust removal portion of the reinforcing bar at a high pressure; Applying a sphere reinforcing agent to the deteriorated portion of the high pressure cleaned concrete structure; Applying a primer coating agent to the surface of the spherical reinforcing agent; Applying a cross-sectional restorative to the surface of the primer coating; Applying a primer coating agent to the surface of the cross-sectional restorative material; (TiO 2 ) sol (sol), C 8 H 2 O 4 Si and (CH 3 ) 2 TiO 2 prepared in the presence of Ti [OCH (Cl 3 ) 2 ] 4 and (CH 3 ) 2 CHOH on the surface of the primer coating, 0.44 mol / l of a SiO 2 sol prepared by CHOH and 0.50 mol / ℓ of a ZnO sol prepared from Zn (C 2 H 3 O 2 ) 2, at least one metal ion selected from Ag, Zn and Cu And this was added to a solution containing 50% of TiO 2 sol, 40% of SiO 2 sol, 9% of ZnO sol and 1% of at least one metal ion selected from Ag, Zn and Cu Wherein the photocatalyst is coated with a predetermined thickness.
As described above, the surface repair and section repair method of a concrete structure using the present invention has the following effects.
First, the present invention is an eco-friendly material which minimizes the use of cement for microorganisms to live, has an antibacterial property of purifying the water, has an anion generating effect with a non-toxic and harmless resin ceramic material, When heat is applied, it burns, but when the heat source disappears, it has the advantage that the fire goes out within 16 seconds and it does not burn itself.
Second, the present invention is a hardening material that can control the curing rate. It can control the curing rate according to the repair position of the concrete structure, and can be easily combined with the curing agent and the concrete reinforcing agent, easy to repair and rework , -5 ℃ ~ + 50 ℃ can be applied to meet the requirements of the field.
Particularly, the present invention is advantageous in the emergency repair and reinforcement works in the urban area because it is possible to control the curing time of 1 hour or 1 hour and 2 days after repairing the surface of the concrete structure and repairing the section by using the cross- have.
Third, the present invention is an integrated super-concrete having a three-fold superhigh stiffness of a conventional high-strength concrete, a three-mesh network without porosity, a crack-free superconcrete structure, a strong abrasion resistant against external impact and abrasion, It is excellent in drying shrinkage and crack prevention.
Particularly, the mortar according to the present invention is a polymer binding structure having a molecular reactivity of at least 98%, which realizes ultra-high strength, abrasion resistance and watertightness by maintaining a three-mesh network structure free from voids and has a compressive strength of 80 MPa, a tensile strength of 6.22 MPa, a flexural strength of 15.5 MPa Of high strength materials.
Fourth, the present invention is a high-performance, long-life chemical resistance and durability (watertightness) material that is free of alkali aggregate reaction due to no reaction with calcium chloride and is advantageous for preventing the saltwater pollution of road facilities, It is advantageous for wastewater treatment plant and sewage pipe maintenance. It is a dense polymer compound which ensures perfect watertightness because there is no pore and water can not permeate. It is effective to prevent impact, vibration absorption and cracking due to elasticity of elastic resin, It has the advantage of strong resistance to ultraviolet rays and strong abrasion resistance due to weathering.
Fifth, the present invention is a high-performance, long-life, high-adhesion material that has excellent adhesion to other structures as well as maintenance and reinforcement of a concrete structure, thereby preventing the occurrence of come off or exfoliation after construction (Bond strength: 21.6 kgf / cm3).
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram showing a repair process of a concrete structure according to the present invention;
FIG. 2 is a process diagram showing a process of recovering a section of a concrete structure according to the present invention. FIG.
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
[Single-sided repair agent]
The cross-sectional restorer according to the present invention comprises 40 to 60% by weight of silica sand, 10 to 25% by weight of calcium sulfoaluminate, 10 to 25% by weight of Portland cement, 0.15 to 5% by weight of a fluidizing agent, To 5 wt%, an acrylic resin of 0.5 to 10 wt%, and an elastic resin of 2 to 10 wt%.
That is, the above-mentioned cross-sectional restorer is composed of silica sand, Calcium Sulfo Aluminate (CSA), Portland Cement (OPC), a fluidizing agent, a hardening retarder, an acrylic resin and an elastic resin.
Here, the silica sand serves as a filler in the cross-sectional restorative material, and the grain size is not limited, but silica sand and silica sand are mixed.
The content of the silica sand is preferably in the range of 40 to 60% by weight, and when it is less than 40% by weight, the effect of suppressing the shrinkage of the curing agent is insignificant and the amount of drying shrinkage can be increased. If it is used in excess, the amount of the filler is excessive, and the fluidity and the workability may be lowered.
The calcium sulfoaluminate (CSA) is used in an amount of 10 to 25% by weight as an Al 2 O 3 component.
If the calcium sulfoaluminate (CSA) content exceeds 25% by weight, it is difficult to secure the working time due to rapid condensation, and when less than 10% by weight is used, the strength is lowered due to the overexpansion reaction.
The above-mentioned portland cement (OPC) is a coagulation control agent prepared by mixing calcite raw material and clay raw material in an appropriate ratio, finely pulverizing and calcining at about 1,450 ° C, and grinding the mixture by adding gypsum. It reacts with slaked lime and anhydrous gypsum and forms a pozzolan and ettringite reaction to stabilize and stabilize the concrete structure.
The hydrate formed in this way exhibits high strength properties, and it is preferable to use one kind of ordinary portland cement having a powder particle size of about 3,500 to 4,200 cm < 2 > / g, preferably 10 to 25% by weight.
The fluidizing agent is used for increasing the fluidity of the cross-sectional restorative agent. For example, it may be one or more selected from the group consisting of naphthalenesulfonate type, melamine sulfonate type and polycarboxylic acid type, and is in the range of 0.15 to 5 wt% use.
The hardening retarder is for preventing rapid curing of the mixture of the cross-sectional restorative agent and includes sodium citrate, citric acid, potassium tartrate, sodium tartrate, and the like.
Particularly, it is preferable to use 0.05 to 5% by weight of the above-mentioned sodium citrate.
In addition, the acrylic resin is used for improving the strength and durability of the cross-sectional restorative agent.
The acrylic resin is used in an amount of 0.5 to 10 wt%.
If the content of the acrylic resin is less than 0.5% by weight, the effect of improving the strength and durability may be deteriorated. If the content of the acrylic resin exceeds 10% by weight, the effect of improving the strength and durability is excellent but not economical.
The elastic resin is added to improve the chemical resistance and antibacterial property of the cross-sectional restorative agent, and it is preferable that the elastic resin includes 2 to 10% by weight in the cross-sectional restorative agent.
On the other hand, 5 parts by weight of a solidifying agent was added and mixed with 100 parts by weight of the restoring agent.
The solidifying agent is composed of 75 wt% of polysilicon sludge, 20 wt% of basic inorganic substance and 5 wt% of silica fume.
The basic mineral is CaO 57.34% by weight, SiO 2 2.52 wt%, Al 2 O 3 1.44 wt.%, FeO 3 0.67 wt.%, SO 3 0.22 weight%, MgO 37.34% by weight, K 2 O 0.29% by weight, F 0.18 wt. %.
The basic inorganic material is composed of 94.68% by weight of CaO, 2.52% by weight of SiO 2 , 1.44% by weight of Al 2 O 3 , 0.67% by weight of FeO 3 , 0.22% by weight of SO 3 , 0.29% by weight of K 2 O and 0.18% by weight of F.
The basic inorganic material is composed of 2.52% by weight of SiO 2 , 1.44% by weight of Al 2 O 3 , 0.67% by weight of FeO 3 , 0.22% by weight of SO 3 , 94.68% by weight of MgO, 0.29% by weight of K 2 O and 0.18% by weight of F.
The basic mineral is composed of light dolomite.
That is, the solidifying agent according to the present invention is a mixture prepared by mixing polysilicon sludge, basic inorganic substance and silica fume in a predetermined ratio.
Here, the polysilicon sludge has a characteristic light grayish color, and 75 wt% of the polysilicon sludge is blended.
The above polysilicon sludge exhibits the following physical and chemical properties.
As shown in Table 1, a polysilicon sludge of the present invention is discharged to the high water content in the water content 61.5%, light with low density, as a fine powder with a fineness 7,122㎤ / g, the chemical composition of most of SiO 2 And CaO, and contains trace amounts of K 2 O and Na 2 O, which are alkaline components.
Further, after the polysilicon sludge powder according to the present invention was more than 24 hours at 60 ℃ drying, the crystal phase obtained is made up of CaCO 3, are the compounds of Na 2 O and Cl NaCl containing a small amount.
In particular, the characteristic feature of the polysilicon sludge of the present invention is that it contains vitreous SiO 2 and is predicted to exhibit pozzolanic reactivity upon reaction with Portland cement.
Also, the basic mineral is composed of CaO, Al 2 O 3, FeO 3, SO 3, MgO, K 2 O, F, and mixed with 20% by weight.
The basic inorganic material is composed of light dolomite, and 20 wt% of the basic inorganic material is blended.
Particularly, the above-mentioned dolomite is produced by bulking the sludge generated in an iron mill or the like by a conventional method, drying it, and then calcining it at a temperature of 800 to 1,000 DEG C for 40 to 80 minutes.
On the other hand, silica fume is a kind of silica fine particles produced by a dry process, and is prepared by burning silicon tetrachloride, chlorosilane, etc. in an atmosphere of hydrogen and oxygen at a high temperature, and 5 wt% is blended.
That is, the silica fume is a collection of fine particles generated in the process of producing silicon metal or ferrosilicon by an electric dust collector.
Here, since the silica (SiO 2 ) has a high melting temperature, it operates at a considerably high temperature.
Particularly, the above-mentioned silicon metal is combined with ore, coke, and wood chips and heated at a high temperature (about 2,000 DEG C) to obtain pure silicon metal.
It is silica fume that collects the fumes generated at this time.
[Repair of Concrete Structure Surface]
1 is a process diagram showing a repair process of a concrete structure according to the present invention.
As shown in this figure, the method of repairing a concrete structure according to the present invention comprises: chipping a surface of a concrete structure; High pressure cleaning of the chipping portion of the concrete structure; Applying a sphere reinforcing agent to the surface of the high pressure cleaned concrete structure; And applying a primer coating agent to the surface of the spherical reinforcing agent.
That is, the method of repairing a surface of a concrete structure according to the present invention includes a step of chipping a concrete structure, a step of washing a high pressure, a step of applying a concrete reinforcing agent, and a step of applying a primer coating to sequentially repair the surface of a concrete structure.
Here, the step of chipping the concrete structure chipping the surface of the concrete structure.
That is, the chipping of the concrete structure is minimized by the pneumatic type hammer, not the hydraulic hammer, and the impact on the existing concrete structure should be minimized. In order to improve the bonding force, (Fracturing) and grinding of the surface of the grinder are combined with chipping to apply the new and old concrete joint.
The high pressure cleaning step then cleans the chipping portion of the concrete structure with a cold / hot water high pressure washer.
Subsequently, the step of applying the spherical reinforcing agent is performed by applying a spherical reinforcing agent composed of a silicate to the deteriorated portion of the high-pressure washed concrete structure.
Wherein the silicate is a generic term for neutral salts in which the hydrogen of various silicic acids is replaced with metal atoms and wherein the one or more silicon center atoms are surrounded by a negatively charged ligand.
And is represented by the general formula xM I 2 O ySiO 2 (M is a monovalent metal). It is produced in large quantities in the natural world and occupies most of the crust as the main component of the ammonite mineral, and exists in other bodies.
Aluminum salts, iron salts, calcium salts, magnesium salts and alkali salts are the most common.
In general, the melting point is low, and when the dissolved one is cooled, it is easy to form the glass.
It is not soluble in acids and alkalis, but it is decomposed by fluoric acid.
Structurally, the tetrahedron of [SiO 4 ] 4- is a unit, which is regularly arranged, and cations enter into the gap to form crystals.
The silicon cations are strongly bound to four oxygen atoms.
The strong bonds they make are mostly covalent bonds.
Within the silicate anion, oxygen is arranged in four spherical forms to occupy the narrowest space.
The four oxygen atoms are arranged at the corners of the tetrahedron, and the relatively small silicon cations are located in the center of the tetrahedron formed by oxygen, so that the silicate is in the form of tetrahedron. Silicates are characterized by their high ionic stability.
Silicates are frequently used in everyday life, and glass, refractory, cement, ceramics, etc., which are the subjects of ceramics, all use the specificity of silicates.
Particularly, it is preferable to add 25 wt% of water to 75 wt% of silicate.
Then, in the step of applying the primer coating agent, a primer coating agent composed of 80% by weight of mortar and 20% by weight of latex powder is applied to the surface of the spherical reinforcing agent.
Here, the mortar is composed of (a) a urethane acrylate resin as a first binder resin, (b) a binder resin constituting a polymethylmethacrylate resin as a second binder resin, and (c) a filler, The mixing ratio of the acrylate resin to the polymethyl methacrylate resin is in the range of 10 to 60: 90 to 40, and the filler is composed of calcium carbonate, talc, or both.
That is, the mortar is composed of a binder resin, sand, and a filler.
Here, the binder resin is composed of a urethane acrylate resin as a first binder resin and a polymethylmethacrylate resin as a second binder resin, and the mixing ratio of the urethane acrylate resin and the polymethylmethacrylate resin is 10 to 60 : 90 to 40 weight ratio. Hydroxyethyl methacrylate (HEMA) resin is added to the binder resin as a third binder resin.
That is, the urethane acrylate resin can impart durability to the spherical reinforcing agent formed of mortar.
The urethane acrylate resin is a hybrid resin having both urethane and acrylate characteristics.
These urethane acrylate resins are generally prepared by polymerization of a urethane prepolymer with a hydroxyalkyl acrylate.
The urethane prepolymer is formed by a polymerization reaction of a polyol and isocyanate, and the types thereof are various.
Examples of the hydroxyalkyl acrylate include methyl methacrylate, 2-hydroxyethylmethacrylate, n-butyl acrylate, and the like.
The content of the binder resin containing the urethane acrylate resin and the polymethyl methacrylate resin is preferably in the range of about 20 to 60 parts by weight based on 100 parts by weight of the mortar composition.
If the content of the binder resin is less than 20 parts by weight, the sand particles can not be bonded properly due to insufficient mixing with the sand. If the content of the binder resin exceeds 60 parts by weight, bleeding may occur after curing.
In the mortar described above, in addition to the urethane acrylate resin as the first binder resin, a polymethyl methacrylate resin may be used as the second binder resin.
At this time, the blending ratio of the urethane acrylate resin as the first binder resin and the polymethylmethacrylate resin as the second binder resin is preferably about 10 to 60: 90 to 40, but is not limited thereto .
By mixing polymethyl methacrylate with urethane acrylate, the strength of the concrete structure filled with the mortar can be improved.
In addition to the urethane acrylate resin and the polymethyl methacrylate resin, the mortar may further include a hydroxyl ethyl methacrylate (HEMA) resin as a third binder resin for reinforcing the strength of the concrete structure have.
The sand is composed of two or more kinds of sand having different particle diameters, or the sand is composed of sand having a particle diameter in the range of 0.2 to 0.4 mm, sand having a particle diameter in the range of 0.4 to 0.8 mm, or a mixture thereof.
In particular, the sand includes saline, and the salt content is 1 to 20 parts by weight based on 100 parts by weight of the sand.
That is, since the sand may affect the workability in the field work of the mortar depending on the particle size or the roughness of the sand particles, the sand having the appropriate particle size or roughness may be used depending on the surface condition of the concrete structure in which the mortar is used .
Particularly, in the present invention, it is possible to mix two or more kinds of sand having different particle diameters in order to reduce the voids between the sands as much as possible and to increase the durability by increasing the meshing phenomenon between the sands.
For example, sand having a particle diameter in the range of 0.2 to 0.4 mm and sand having a particle diameter in the range of 0.4 to 0.8 mm may be mixed at a weight ratio of 1: 1.
In addition, the sand containing salt may be used.
This is because the salt in the sand can be absorbed by the aforementioned urethane acrylate resin, so that the strength of the coating layer is not affected.
However, the content of saline in the sand is preferably in the range of 1 to 20 parts by weight based on 100 parts by weight of the sand.
The saline-containing sand can also be used in Arabic and African soil, especially sand in the desert area.
Especially, Arabic soil contains SiO 2 and CaCO 3 unlike domestic soil, especially silica-based soil containing a large amount of SiO 2 .
These silica-based Arabian soils, especially desert sand, are small in size and can reduce porosity, which can increase the strength of concrete structures.
For example, the particle size of the above-described desert sand may be about 1 to 1000 mu m, preferably about 3 to 50 mu m.
In the case of such small-sized desert sand, the cost of coating the concrete structure may be reduced because few voids between the sands can be used and the cost of sand is low.
Examples of the sand include white sand, silica sand, and the like.
Among them, silica sand is preferably used.
The silica sand is composed of quartz grains and is formed by weathering of acidic rocks. Its chemical composition is mainly composed of silicic anhydride (anhydrous silicic acid) SiO 2 .
If such sand is contained too much in the mortar, the porosity of the applied layer of the final concrete structure may increase, resulting in a decrease in strength.
For this reason, it is appropriate to include the sand in an amount ranging from about 10 to 78 parts by weight based on 100 parts by weight of the mortar, but is not limited thereto.
On the other hand, in addition to the above-mentioned sand, gravel may be further added as an additional substance.
At this time, the kind and the particle diameter of the gravel used in the present invention are not particularly limited.
However, since the particle size of the gravel is closely related to the porosity that affects the strength of the applied layer, it is preferable that the particle size is in the range of about 2 to 15 mm.
If the particle size of the gravel is less than 2 mm, the strength of the formed coating layer is increased but the porosity may become clogged and the permeability may become poor. If the particle size of the gravel is more than 15 mm, the permeability of the formed coating layer is increased The porosity can be increased and the strength can be reduced.
However, in order to compensate the strength of the coating layer, it is preferable to suitably mix the following fillers, for example, fine particles such as talc or calcium carbonate to appropriately reduce the voids.
Meanwhile, in the mortar of the present invention, a filler is formed which removes fine voids formed between the sand particles.
The filler is composed of calcium carbonate, talc, or both, and the particle size of the calcium carbonate is in the range of 10 to 80 mu m, and the particle size of the talc is in the range of 50 to 200 mu m.
By filling the microvoids with such a filler, the strength of the formed coating layer can be increased.
Such fillers include calcium carbonate and talc, such as talc.
Calcium carbonate is an ore mainly composed of CaCO 3 , which contains about 56% of CaO 3 and about 44% of CO 2 , and is composed of Al 2 O 3 , SiO 2 , Fe 2 O 3 And a trace amount of impurities.
The calcium carbonate is classified into heavy calcium carbonate produced by simple physical processing and light calcium carbonate produced by chemical recrystallization.
Among them, heavy calcium carbonate excellent in physical properties and processability and low in cost is preferably used.
The particle size of such calcium carbonate is not particularly limited.
However, when calcium carbonate having a too large particle size is used, the gap between the sand particles can not be properly filled, and the void of the coating layer increases, so that the strength of the coating layer can be lowered.
In addition, a large amount of binder resin can be used by filling the gap with a binder resin instead of calcium carbonate, which may increase the manufacturing cost of the coating layer.
Therefore, it is appropriate to use calcium carbonate having a particle diameter in the range of about 10 to 80 mu m.
Talc is a hydrated magnesium silicate having a water-molecule-containing silicon bonded to a magnesium atom, and its chemical composition is Mg 3 Si 4 O 3 (OH) 2 .
By mixing the talc with the sand, the voids existing between the sand particles can be filled with talc, so that the strength of the coated layer can be increased.
The particle size of the talc is not particularly limited, but it is preferable to use a talc having a medium particle size in consideration of the strength of the coating layer. For example, it is appropriate to use talc in the range of about 50 to 200 mu m.
The content of the filler is preferably about 2 to 50 parts by weight based on 100 parts by weight of the mortar, but is not limited thereto.
If the content of the filler is less than 2 parts by weight, the gap between the sand particles can not be filled with the filler, so that the strength of the coating layer may be lowered.
On the other hand, when the content of the filler is more than 50 parts by weight, the voids between the sand particles may be clogged too much by the filler, resulting in poor water permeability.
In addition to the above-mentioned components, additives such as a hardening accelerator, a surface modifier, a viscosity modifier, a thickener, an antioxidant, an ultraviolet ray inhibitor, an antifoaming agent, a fire retardant, a fiber reinforcing material, a mineral admixture and a high performance water reducing agent are added to the mortar of the present invention As shown in FIG.
These additives may be added to the mortar in any amount known in the art.
It is noted here that the mortar can be produced by mixing a urethane acrylate resin as the first binder resin, a hardener, sand and a filler.
Among these additives, reference standards for high fire chemical elements and test results are shown in Tables 7 and 8 below.
SiO 2
Al 2 O 3 + Fe 2 O 3
CaO + MgO
Na 2 + K 2 O
SO 3
23% or more
9% or more
More than 50%
Less than 1%
Less than 6%
High fire chemical element standard (specification)
SiO 2
Al 2 O 3 + Fe 2 O 3
CaO + MgO
Na 2 + K 2 O
SO 3
25.20%
13.02%
57.67%
0.94%
1.94%
High fire chemical analysis test result (test report)
Further, the fiber reinforcing material is made of polypropylene fiber, and about 600 to 8.5 million fibers are distributed three-dimensionally in a block / mortar < 1 > m < 3 > It increases the resistance ability against various block performance inhibitors such as impact, breakage, abrasion, pitcher, corrosion and frost damage, thereby enhancing the quality of the block as a whole.
material
Polypropyline
importance
0.91
Tensile Strength (Mpa)
300 or more
Tensile elongation (%)
25 or less
Elastic modulus (Mpa)
More than 3,000
Melting point (캜)
160 ℃ or more
Acid resistance
Very high (inert)
Alkali resistance
Very high (inert)
Physical Properties of Fiber Reinforcement
In addition, blast furnace slag and silica fume are used as mineral admixtures to replace dense blocks with high functionality (high tensile strength, high durability, high flowability), and they are used at a weight ratio of 20% and 5% of the block mixture.
Specific surface area
(Cm < 2 > / g)
importance
Activity index
Chemical composition (%)
7 days
28th
91 days
SiO 2
Al 2 O 3
Fe 2 O 3
CaO
MgO
SO 3
LOI
5962
2.91
115
137
142
34.81
16.19
0.47
41.25
8.05
0.16
0.32
Physical and Chemical Properties of Blast Furnace Slag
Wetting amount
(%)
Specific surface area
(Cm < 2 > / g)
importance
Chemical composition (%)
SiO 2
C
Fe 2 O 3
Al 2 O 3
Na 2 O 3
K 2 O
MgO
0.1
20,000
2.05
92
1.2
2.4
1.3
0.1
1.2
0.4
Physical and chemical properties of silica fume
color
chief ingredient
Solid content (%)
pH
importance
% Reduction rate
Bleeding amount ratio (%)
bitumen
naphthalene
Sulfonate system
40 ± 2
7.0 ± 1.0
1.20 0.02
23
51
Physical Properties of High Performance Water Reducing Agent
Meanwhile, 35 to 40% by weight of granite sludge is added to 100% by weight of the mortar.
Here, the granite sludge mentioned above is a mixture of water generated in the granulated powder and 6000 cm 2 / g or more of the granulated powder.
In particular, the granite is composed of quartz, mica, and feldspar (Na 2 O, Al 2 O 3 , 6SiO 2 ). The biotite in the mica is radiated and the feldspar is very strong.
Spread more than 10m. Feldspar (Na 2 O, Al 2 O 3, 6SiO 2) is a Streptococcus tetrahedron, which is a Si tetrahedron and Al tetrahedra, there is a Na ion of one equivalent of coupling for each of Al ions, these bases are crushed mineral It becomes a time substitution property.
Therefore, when the feldspar is pulverized, the amount of base substitution is increased, and when the pulverization is carried out by wet pulverizing, it is discharged into water. Feldspar is different from ordinary silica sand or silica.
In the case of silica sand, the content of SiO 2 is 90 ± 5% and the content of Al 2 O 3 is less than 5%. On the other hand, feldspar has a SiO 2 content of 75~85% and an Al 2 O 3 content of 15~25% (Cement) is mixed with a binder (cement) to increase the initial strength and to reduce the drying shrinkage due to the expandability of the feldspar, as well as to significantly reduce the occurrence of cracks .
Particularly, the granite sludge obtained from the process of quarrying and granulating the granite waste granite and granite from the waste stone and stone sludge produced in the process of granulating the granite or from the process of quarrying the granite is precipitated (precipitation coagulant: , Solid Al 2 O 3 (17%)) and dried in the form of a cake.
[Repair of concrete structure section]
2 is a process diagram illustrating a concrete structure section repair process according to the present invention.
As shown in this figure, the method for repairing a section of a concrete structure according to the present invention comprises: chipping a deteriorated portion of a concrete structure; Removing the rust of the reinforcing bar of the deteriorated portion; Washing the rust removal portion of the reinforcing bar at a high pressure; Applying a sphere reinforcing agent to the deteriorated portion of the high pressure cleaned concrete structure; Applying a primer coating agent to the surface of the spherical reinforcing agent; Applying a cross-sectional restorative to the surface of the primer coating; And applying a primer coating agent to the surface of the cross-sectional restorative material.
That is, the method of recovering a section of a concrete structure according to the present invention comprises sequentially chipping a concrete structure, removing a reinforcing bar, washing a high pressure, applying a spherical reinforcing agent, applying a primer coating, applying a single- Thereby restoring the section of the concrete structure.
Here, the chipping step of the concrete structure chipping the deteriorated portion of the concrete structure.
In other words, the deterioration part of the concrete structure should minimize the impact on the existing concrete structure by the pneumatic hammer, not the hydraulic hammer, and it is necessary to minimize the impact on the existing concrete structure and to improve the bonding force, Breaking: Breaking) and grinding of the surface of the grinder are mixed with chipping (cutting and peeling).
Next, after the deteriorated portion of the concrete structure is chipped, the rust of the reinforced portion of the chipped portion of the deteriorated portion is removed by using a wire brush, sand blast, liquid honing, barrel polishing or the like, or by pickling, electrolytic pickling, chemical polishing, Electrolytic polishing or the like is used to remove it.
The high pressure cleaning step then rinses the rust removal and chipping portions of the concrete structure with a cold / hot water high pressure washer.
Subsequently, the step of applying the spherical reinforcing agent is performed by applying a spherical reinforcing agent composed of a silicate to the deteriorated portion of the high-pressure washed concrete structure.
Wherein the silicate is a generic term for neutral salts in which the hydrogen of various silicic acids is replaced with metal atoms and wherein the one or more silicon center atoms are surrounded by a negatively charged ligand.
And is represented by the general formula xM I 2 O ySiO 2 (M is a monovalent metal). It is produced in large quantities in the natural world and occupies most of the crust as the main component of the ammonite mineral, and exists in other bodies. Aluminum salts, iron salts, calcium salts, magnesium salts and alkali salts are the most common.
In general, the melting point is low, and when the dissolved one is cooled, it is easy to form the glass. It is not soluble in acids and alkalis, but it is decomposed by fluoric acid.
Structurally, the tetrahedron of [SiO 4 ] 4- is a unit, which is regularly arranged, and cations enter into the gap to form crystals. The silicon cations are strongly bound to four oxygen atoms. The strong bonds they make are mostly covalent bonds. Within the silicate anion, oxygen is arranged in four spherical forms to occupy the narrowest space. The four oxygen atoms are arranged at the corners of the tetrahedron, and the relatively small silicon cations are located in the center of the tetrahedron formed by oxygen, so that the silicate is in the form of tetrahedron. Silicates are characterized by their high ionic stability. Silicates are frequently used in everyday life, and glass, refractory, cement, ceramics, etc., which are the subjects of ceramics, all use the specificity of silicates.
Particularly, it is preferable to add 25 wt% of water to 75 wt% of silicate.
Then, in the step of applying the primer coating agent, a primer coating agent composed of 80% by weight of mortar and 20% by weight of latex powder is applied to the surface of the spherical reinforcing agent.
Here, the mortar is composed of (a) a urethane acrylate resin as a first binder resin, (b) a binder resin constituting a polymethylmethacrylate resin as a second binder resin, and (c) a filler, The mixing ratio of the acrylate resin to the polymethyl methacrylate resin is in the range of 10 to 60: 90 to 40, and the filler is composed of calcium carbonate, talc, or both.
That is, the mortar is composed of a binder resin, sand, and a filler.
Here, the binder resin is composed of a urethane acrylate resin as a first binder resin and a polymethylmethacrylate resin as a second binder resin, and the mixing ratio of the urethane acrylate resin and the polymethylmethacrylate resin is 10 to 60 : 90 to 40 weight ratio. Hydroxyethyl methacrylate (HEMA) resin is added to the binder resin as a third binder resin.
That is, the urethane acrylate resin can impart durability to the spherical reinforcing agent formed of mortar.
The urethane acrylate resin is a hybrid resin having both urethane and acrylate characteristics.
These urethane acrylate resins are generally prepared by polymerization of a urethane prepolymer with a hydroxyalkyl acrylate.
The urethane prepolymer is formed by a polymerization reaction of a polyol and isocyanate, and the types thereof are various.
Examples of the hydroxyalkyl acrylate include methyl methacrylate, 2-hydroxyethylmethacrylate, n-butyl acrylate, and the like.
The content of the binder resin including the urethane acrylate resin and the polymethyl methacrylate resin is preferably in the range of about 20 to 60 parts by weight based on 100 parts by weight of the mortar composition.
If the content of the binder resin is less than 20 parts by weight, the sand particles can not be bonded properly due to insufficient mixing with the sand. If the content of the binder resin exceeds 60 parts by weight, bleeding may occur after curing.
In the mortar described above, in addition to the urethane acrylate resin as the first binder resin, a polymethyl methacrylate resin may be used as the second binder resin.
At this time, the blending ratio of the urethane acrylate resin as the first binder resin and the polymethylmethacrylate resin as the second binder resin is preferably about 10 to 60: 90 to 40, but is not limited thereto .
By mixing polymethyl methacrylate with urethane acrylate, the strength of the concrete structure filled with the mortar can be improved.
In addition to the urethane acrylate resin and the polymethyl methacrylate resin, the mortar may further include a hydroxyl ethyl methacrylate (HEMA) resin as a third binder resin for reinforcing the strength of the concrete structure have.
The sand is composed of two or more kinds of sand having different particle diameters, or the sand is composed of sand having a particle diameter in the range of 0.2 to 0.4, sand having a particle diameter in the range of 0.4 to 0.8, or a mixture thereof.
Particularly, the sand includes saline, and the salt content is 1 to 20 parts by weight based on 100 parts by weight of the sand.
That is, since the sand may affect the workability in the field work of the mortar depending on the particle size or the roughness of the sand particles, the sand having the appropriate particle size or roughness may be used depending on the surface condition of the concrete structure in which the mortar is used .
Particularly, in the present invention, it is possible to mix two or more kinds of sand having different particle diameters in order to reduce the voids between the sands as much as possible and to increase the durability by increasing the meshing phenomenon between the sands.
For example, sand having a particle diameter in the range of 0.2 to 0.4 mm and sand having a particle diameter in the range of 0.4 to 0.8 mm may be mixed at a weight ratio of 1: 1.
In addition, the sand containing salt may be used.
This is because the salt in the sand can be absorbed by the aforementioned urethane acrylate resin, so that the strength of the coating layer is not affected.
However, the content of saline in the sand is preferably in the range of 1 to 20 parts by weight based on 100 parts by weight of the sand.
In addition, the salt-containing sand can be used in the soil of the Arab and African regions (ex. UAE etc.), especially in the desert region.
Especially, Arabic soil contains SiO 2 and CaCO 3 unlike domestic soil, especially silica-based soil containing a large amount of SiO 2 .
These silica-based Arabian soils, especially desert sand, are small in size and can reduce porosity, which can increase the strength of concrete structures.
For example, the particle size of the above-described desert sand may be about 1 to 1000 mu m, preferably about 3 to 50 mu m. In the case of such small-sized desert sand, the cost of coating the concrete structure may be reduced because few voids between the sands can be used and the cost of sand is low.
Examples of the sand include white sand, silica sand, and the like.
Among them, silica sand is preferably used.
The silica sand is composed of quartz grains and is formed by weathering of acidic rocks. Its chemical composition is mainly composed of silicic anhydride (anhydrous silicic acid) SiO 2 .
If such sand is contained too much in the mortar, the porosity of the applied layer of the final concrete structure may increase, resulting in a decrease in strength.
For this reason, it is preferable to include the sand in an amount ranging from about 10 to 78 parts by weight based on 100 parts by weight of the mortar, but is not limited thereto.
On the other hand, in addition to the above-mentioned sand, gravel may be further added as an additional substance.
At this time, the kind and the particle diameter of the gravel used in the present invention are not particularly limited.
However, since the particle size of the gravel is closely related to the porosity that affects the strength of the applied layer, it is preferable that the particle size is in the range of about 2 to 15 mm.
If the particle size of the gravel is less than 2 mm, the strength of the formed coating layer is increased but the porosity may become clogged and the permeability may become poor. If the particle size of the gravel is more than 15 mm, the permeability of the formed coating layer is increased The porosity can be increased and the strength can be reduced.
However, in order to compensate the strength of the coating layer, it is preferable to suitably mix the following fillers, for example, fine particles such as talc or calcium carbonate to appropriately reduce the voids.
Meanwhile, in the mortar of the present invention, a filler is formed which removes fine voids formed between the sand particles.
The filler is composed of calcium carbonate, talc, or both, and the particle size of the calcium carbonate is in the range of 10 to 80 mu m, and the particle size of the talc is in the range of 50 to 200 mu m.
By filling the microvoids with such a filler, the strength of the formed coating layer can be increased.
Such fillers include calcium carbonate and talc, such as talc.
Calcium carbonate is an ore mainly composed of CaCO 3 , which contains about 56% of CaO 3 and about 44% of CO 2 , and is composed of Al 2 O 3 , SiO 2 , Fe 2 O 3 And a trace amount of impurities.
The calcium carbonate is classified into heavy calcium carbonate produced by simple physical processing and light calcium carbonate produced by chemical recrystallization.
Among them, heavy calcium carbonate excellent in physical properties and processability and low in cost is preferably used.
The particle size of such calcium carbonate is not particularly limited. However, when calcium carbonate having a too large particle size is used, the gap between the sand particles can not be properly filled, and the void of the coating layer increases, so that the strength of the coating layer can be lowered.
In addition, a large amount of binder resin can be used by filling the gap with a binder resin instead of calcium carbonate, which may increase the manufacturing cost of the coating layer.
Therefore, it is appropriate to use calcium carbonate having a particle diameter in the range of about 10 to 80 mu m.
Talc is a hydrated magnesium silicate having a water-molecule-containing silicon bonded to a magnesium atom, and its chemical composition is Mg 3 Si 4 O 3 (OH) 2 .
By mixing the talc with the sand, the voids existing between the sand particles can be filled with talc, so that the strength of the coated layer can be increased.
The particle size of the talc is not particularly limited, but it is preferable to use a talc having a medium particle size in consideration of the strength of the coating layer.
For example, it is appropriate to use talc in the range of about 50 to 200 mu m.
The content of the filler is preferably about 2 to 50 parts by weight based on 100 parts by weight of the mortar, but is not limited thereto.
If the content of the filler is less than 2 parts by weight, the gap between the sand particles can not be filled with the filler, so that the strength of the coating layer may be lowered.
On the other hand, when the content of the filler is more than 50 parts by weight, the voids between the sand particles may be clogged too much by the filler, resulting in poor water permeability.
In addition to the above-mentioned components, additives such as a hardening accelerator, a surface modifier, a viscosity modifier, a thickener, an antioxidant, an ultraviolet ray inhibitor, an antifoaming agent, a fire retardant, a fiber reinforcing material, a mineral admixture and a high performance water reducing agent are added to the mortar of the present invention As shown in FIG.
These additives may be added to the mortar in any amount known in the art.
Particularly, in the mortar according to the present invention, a curing accelerator may be added in order to promote the curing of the binder resin and the curing agent to improve the compactness of the mortar.
As the curing accelerator, dimethyl acetamide (DMA) or the like may be used.
The curing accelerator may be included in an amount of about 4 × 10 -4 to about 10 × 10 -4 parts by weight based on 100 parts by weight of the urethane acrylate resin.
If the content of the curing accelerator is too small, the curing of the mortar is insufficient depending on the working conditions, so that the physical properties of the mortar can not be maintained. If the content is too large, the curing of the mortar becomes too rapid and shrinkage of the mortar occurs .
The urethane acrylate resin composed of the above-described components can be produced by a conventional method known in the art.
For example, the urethane acrylate resin can be produced by mixing a urethane acrylate resin as the first binder resin, a curing agent, sand and a filler.
Further, the fiber reinforcing material is made of polypropylene fiber, and about 600 to 8.5 million fibers are distributed three-dimensionally in a block / mortar < 1 > m < 3 > It increases the resistance ability against various block performance inhibitors such as impact, breakage, abrasion, pitcher, corrosion and frost damage, thereby enhancing the quality of the block as a whole.
And, to make dense blocks of high functionality (high tensile strength, high durability, high flowability), blast furnace slag and silica fume are used as mineral admixture and substitution of 20% and 5% weight ratio of block mixture is used.
The mortar composed of the above-mentioned components can be produced by a conventional method known in the art.
For example, it is found that the mortar can be produced by mixing urethane acrylate resin, sand and filler, which are the first binder resin.
The step of applying the cross-sectional restorative agent may further comprise a step of applying 40 to 60% by weight of silica sand, 10 to 25% by weight of calcium sulfoaluminate (CSA), 10 to 25% by weight of Portland cement (OPC) 0.1 to 5% by weight of a curing retarder, 0.05 to 5% by weight of a curing retarder, 0.5 to 10% by weight of an acrylic resin, and 2 to 10% by weight of an elastic resin.
That is, the above-mentioned cross-sectional restorer is composed of silica sand, Calcium Sulfo Aluminate (CSA), Portland Cement (OPC), a fluidizing agent, a hardening retarder, an acrylic resin and an elastic resin.
Here, the silica sand serves as a filler in the cross-sectional restorative material, and the grain size is not limited, but silica sand and silica sand are mixed.
When the amount of the curing agent is less than 40% by weight, the effect of suppressing the shrinkage of the curing agent is insignificant and the amount of drying shrinkage can be increased, and it is uneconomical. The amount of the filler may be excessive and the fluidity and the workability may be deteriorated.
The calcium sulfoaluminate (CSA) is used in an amount of 10 to 25% by weight as an Al 2 O 3 component.
When the calcium sulfoaluminate (CSA) is used in an amount exceeding 25% by weight, it is difficult to secure the working time due to rapid condensation, and when less than 10% by weight is used, the strength is lowered due to the overexpansion reaction.
The above-mentioned portland cement (OPC) is prepared by mixing the calcareous raw material and the clayey raw material in an appropriate ratio, finely pulverizing and calcining the clinker at about 1,450 ° C, and adding gypsum as a coagulation controlling agent to obtain fine lime. And anhydrous gypsum, and forms pozzolan and ettringite reactions to stabilize and stabilize the soft ground.
The hydrate formed in this way exhibits high strength properties, and it is preferable to use one kind of ordinary portland cement having a powder particle size of about 3,500 to 4,200 cm < 2 > / g, preferably 10 to 25% by weight.
The fluidizing agent is used for increasing the fluidity of the cross-sectional restorative agent. For example, it may be one or more selected from the group consisting of naphthalenesulfonate type, melamine sulfonate type and polycarboxylic acid type, and is in the range of 0.15 to 5 wt% use.
The hardening retarder is for preventing rapid curing of the mixture of the cross-sectional restorative agent and includes sodium citrate, citric acid, potassium tartrate, sodium tartrate, and the like.
Particularly, it is preferable to use 0.05 to 5% by weight of the above-mentioned sodium citrate.
In addition, the acrylic resin is used for improving the strength and durability of the cross-sectional restorative agent. The acrylic resin is used in an amount of 0.5 to 10 wt%.
If the content of the acrylic resin is less than 0.5% by weight, the effect of improving the strength and durability may be deteriorated. If the content of the acrylic resin exceeds 10% by weight, the effect of improving the strength and durability is excellent but not economical.
The elastic resin is added to improve the chemical resistance and antibacterial property of the cross-sectional restorative agent, and it is preferable that the elastic resin includes 2 to 10% by weight in the cross-sectional restorative agent.
On the other hand, 5 parts by weight of a solidifying agent was added and mixed with 100 parts by weight of the restoring agent.
The solidifying agent is composed of 75 wt% of polysilicon sludge, 20 wt% of basic inorganic substance and 5 wt% of silica fume.
The basic mineral is CaO 57.34% by weight, SiO 2 2.52 wt%, Al 2 O 3 1.44 wt.%, FeO 3 0.67 wt.%, SO 3 0.22 weight%, MgO 37.34% by weight, K 2 O 0.29% by weight, F 0.18 wt. %.
The basic inorganic material is composed of 94.68% by weight of CaO, 2.52% by weight of SiO 2 , 1.44% by weight of Al 2 O 3 , 0.67% by weight of FeO 3 , 0.22% by weight of SO 3 , 0.29% by weight of K 2 O and 0.18% by weight of F.
The basic inorganic material is composed of 2.52% by weight of SiO 2 , 1.44% by weight of Al 2 O 3 , 0.67% by weight of FeO 3 , 0.22% by weight of SO 3 , 94.68% by weight of MgO, 0.29% by weight of K 2 O and 0.18% by weight of F.
The basic mineral is composed of light dolomite.
That is, the solidifying agent according to the present invention is a mixture prepared by mixing polysilicon sludge, basic inorganic substance and silica fume in a predetermined ratio.
Here, the polysilicon sludge has a characteristic light grayish color, and 75 wt% of the polysilicon sludge is blended.
The polysilicon sludge according to the present invention has a moisture content of 61.5% and is discharged at a high water content. The density is low and light, and the powder is 7122 cm 3 / g. The chemical composition is mostly composed of SiO 2 and CaO, Minute amounts of K 2 O and Na 2 O are contained.
Further, after the polysilicon sludge powder according to the present invention was more than 24 hours at 60 ℃ drying, the crystal phase obtained is made up of CaCO 3, are the compounds of Na 2 O and Cl NaCl containing a small amount.
In particular, the characteristic feature of the polysilicon sludge of the present invention is that it contains vitreous SiO 2 and is predicted to exhibit pozzolanic reactivity upon reaction with Portland cement.
Also, the basic mineral is composed of CaO, Al 2 O 3, FeO 3, SO 3, MgO, K 2 O, F, and mixed with 20% by weight.
The basic inorganic material is composed of light dolomite, and 20 wt% of the basic inorganic material is blended.
Particularly, the above-mentioned light dolomite is produced by bulking the sludge generated in steelworks or the like by a usual method, drying it, and then calcining it at a temperature of 800 to 1,000 DEG C for 40 to 80 minutes.
On the other hand, silica fume is a kind of silica fine particles produced by a dry process, and is prepared by burning silicon tetrachloride, chlorosilane, etc. in an atmosphere of hydrogen and oxygen at a high temperature, and 5 wt% is blended.
That is, the silica fume is a collection of fine particles generated in the process of producing silicon metal or ferrosilicon by an electric dust collector.
Here, since the silica (SiO 2 ) has a high melting temperature, it operates at a considerably high temperature.
Particularly, the above-mentioned silicon metal is combined with ore, coke, and wood chips and heated at a high temperature (about 2,000 DEG C) to obtain pure silicon metal.
It is silica fume that collects the fumes generated at this time.
Subsequently, the step of applying the primer coating agent applies a primer coating agent to the surface of the cross-sectional restorative material.
Herein, since the primer coating agent has already been described in the step of applying the surface strengthening agent, the further explanation is omitted.
On the other hand, the photocatalyst is applied to the surface of the concrete structure as described above to a certain thickness.
The photocatalyst was prepared from Ti [OCH (Cl 3 ) 2 ] 4 and TiO 2 sol (sol) prepared by (CH 3 ) 2 CHOH with 0.57 mol / ℓ, C 8 H 2 O 4 Si and (CH 3 ) CHOH to the SiO 2 sol (sol) 0.44㏖ / ℓ, Zn (C 2 H 3 O 2) supporting a ZnO sol (sol) at least one metal ion selected from Ag, Zn, Cu in 0.50㏖ / ℓ prepared from 2 , And this was compounded in a ratio of 50% of TiO 2 sol, 40% of SiO 2 sol, 9% of ZnO sol and 1% of at least one metal ion selected from Ag, Zn and Cu will be.
The photocatalyst having the above-described constitution has a function of decomposing / removing the contaminants attached to the concrete structure, NOx, SOx, odor gas, etc. and sterilizing microorganisms by the photochemical reaction of the photocatalyst.
That is, the above-mentioned photocatalyst forms titanium dioxide (TiO 2 ) ultrafine particles having excellent photocatalytic activity and supports at least one of metal ions of Ag, Zn, and Cu, thereby being excited in the valence band by irradiation of ultraviolet rays, By suppressing the recombination of excited electrons in the holes of the valence band within a short time, the photochemical reaction is sufficient at a small amount of ultraviolet energy by keeping the active point of the photochemical reaction at the maximum, A deodorizing effect, a protective effect, and a sterilizing effect can be further exerted by the microbial sterilization mechanism.
As described above, the surface repair and sectional restoration method using the concrete structure cross-sectional restorer according to the present invention is an eco-friendly material using minimal cement, has the effect of purifying the water of antibacterial property, and is a natural- It is a non-toxic and harmless resin ceramics material and has negative ion generating effect.
Particularly, it has been found that the present invention does not detect heavy metal components such as cadmium (Cd), lead (Pb), mercury (Hg), hexavalent chromium (Cr 6+ ), and halogen components such as bromine (Br) and chlorine (Cl) .
In addition, the present invention is advantageous in that it burns when continuously applying high heat from the outside, but burns off within 16 seconds if the heat source is lost, and does not burn by itself.
The present invention can control the hardening speed according to the maintenance position of the concrete structure, can be easily mixed with the mortar, easy to repair and rework, can be installed at the temperature of -5 ° C to + 50 ° C, It can be applied according to requirements.
Particularly, the present invention is advantageous for emergency repair and reinforcement works in the urban area because the maintenance of the concrete structure and the curing time of 1 hour or 1 hour and 2 days after the repair of the section can be adjusted.
In addition, the present invention is an integrated superconcrete which has three times the ultrahigh stiffness of a conventional high strength concrete, has a strong durability of a triple mesh without voids, and is free from cracks. It is strong in abrasion resistant against external impact and abrasion, It is excellent in drying shrinkage and crack prevention.
Particularly, the mortar according to the present invention is a polymer binding structure having a molecular reactivity of at least 98%, which realizes ultra-high strength, abrasion resistance and watertightness by maintaining a three-mesh network structure free from voids and has a compressive strength of 80 MPa, a tensile strength of 6.22 MPa, a flexural strength of 15.5 MPa Of high strength materials.
The present invention is a high-performance, long-life chemical resistant and durable (watertight) material.
In other words, the present invention is advantageous in preventing chloride attack on road facilities because there is no alkali aggregate reaction due to no reaction with calcium chloride, and there is no chemical reaction even with strong acid such as sulfuric acid, and is advantageous for sewage treatment plant, wastewater treatment plant, sewer pipe repair, It has a perfect watertightness that water can not permeate because there is no pore. It is advantageous for structures acting like bridges by suppressing impact, vibration absorption and cracking due to elasticity of elastic resin, It is strong against ultraviolet rays and has a strong resistance to abrasion due to weathering.
In addition, the present invention has an effect in that it is excellent in adhesion to other structures as well as maintenance and reinforcement of a section of a concrete structure using the present invention, resulting in no come off or exfoliation after construction (Bond strength 21.6 kgf / cm3).
The preferred embodiments described in the specification of the present invention are intended to be illustrative, not limiting, and the scope of the present invention is indicated by the appended claims, and all modifications that come within the meaning of the claims are included in the present invention. .
A: Repair of concrete structures
B: Restoration of section of concrete structure
Claims (25)
Removing the rust of the reinforcing bar of the deteriorated portion;
Washing the rust removal portion of the reinforcing bar at a high pressure;
Applying a sphere reinforcing agent to the deteriorated portion of the high pressure cleaned concrete structure;
Applying a primer coating agent to the surface of the spherical reinforcing agent;
Applying a cross-sectional restorative to the surface of the primer coating;
Applying a primer coating agent to the surface of the cross-sectional restorative material;
(TiO 2 ) sol (sol), C 8 H 2 O 4 Si and (CH 3 ) 2 TiO 2 prepared in the presence of Ti [OCH (Cl 3 ) 2 ] 4 and (CH 3 ) 2 CHOH on the surface of the primer coating, 0.44 mol / l of a SiO 2 sol prepared by CHOH and 0.50 mol / ℓ of a ZnO sol prepared from Zn (C 2 H 3 O 2 ) 2, at least one metal ion selected from Ag, Zn and Cu And this was added to a solution containing 50% of TiO 2 sol, 40% of SiO 2 sol, 9% of ZnO sol and 1% of at least one metal ion selected from Ag, Zn and Cu And the photocatalyst of the composite treatment is applied to a predetermined thickness. The surface repair method and the section repair method of the concrete structure using the cross-sectional repair agent of the concrete structure.
Wherein the concrete reinforcing agent is composed of silicate. The method for repairing and repairing a concrete structure of a concrete structure using a cross-sectional restorative material is disclosed.
Wherein the primer coating agent is composed of 80% by weight of mortar and 20% by weight of latex powder.
The mortar comprises (a) a urethane acrylate resin as a first binder resin, (b) a binder resin constituting a polymethylmethacrylate resin as a second binder resin, and (c) a filler, wherein the urethane acrylate resin And the polymethyl methacrylate resin is composed of 10 to 60:90 to 40 parts by weight, and the filler is composed of calcium carbonate, talc or both. Repair and repair of concrete structures.
A method for repairing a surface of a concrete structure and a method for repairing a section of a concrete structure using a concrete structure cross-sectional restorer, wherein a hydroxy ethyl methacrylate (HEMA) resin is added to the mortar as a third binder resin.
Wherein the sand is composed of a mixture of two or more types of sand having different particle diameters, or the sand is composed of sand having a particle diameter in the range of 0.2 to 0.4 mm, sand having a particle diameter in the range of 0.4 to 0.8 mm, Repair and Repair Method of Concrete Structures Using Recycled Concrete Structures.
Wherein the sand comprises saline and the salt content is 1 to 20 parts by weight based on 100 parts by weight of the sand.
Wherein the gravel is added to the mortar and the particle size of the gravel is in the range of 2 to 15 mm.
Wherein the calcium carbonate has a particle diameter in the range of 10 to 80 mu m.
And the particle size of the talc is in the range of 50 to 200 mu m.
Wherein the cross-sectional restorer comprises 40 to 60% by weight of silica sand, 10 to 25% by weight of calcium sulfoaluminate, 10 to 25% by weight of Portland cement, 0.15 to 5% by weight of a fluidizing agent, 0.05 to 5% %, An acrylic resin of 0.5 to 10% by weight, and an elastic resin of 2 to 10% by weight based on the total weight of the concrete.
And 5 parts by weight of a solidifying agent is added to 100 parts by weight of the restorative material.
Wherein the solidifying agent is composed of 75 wt% of polysilicon sludge, 20 wt% of basic inorganic substance and 5 wt% of silica fume.
The basic mineral is CaO 57.34% by weight, SiO 2 2.52 wt%, Al 2 O 3 1.44 wt.%, FeO 3 0.67 wt.%, SO 3 0.22 weight%, MgO 37.34% by weight, K 2 O 0.29% by weight, F 0.18 wt. % Of the surface area of the concrete structure.
The basic inorganic material is composed of 94.68% by weight of CaO, 2.52% by weight of SiO 2 , 1.44% by weight of Al 2 O 3 , 0.67% by weight of FeO 3 , 0.22% by weight of SO 3 , 0.29% by weight of K 2 O and 0.18% Repair of Concrete Structure and Repair Method of Section Using Recovered Concrete Structure.
The basic inorganic material is composed of 2.52% by weight of SiO 2 , 1.44% by weight of Al 2 O 3 , 0.67% by weight of FeO 3 , 0.22% by weight of SO 3 , 94.68% by weight of MgO, 0.29% by weight of K 2 O and 0.18% Repair of Concrete Structure and Repair Method of Section Using Recovered Concrete Structure.
And the basic inorganic material is composed of light dolomite. The surface repair method and the section repair method of the concrete structure using the cross-sectional restorative material of the concrete structure.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102158535B1 (en) * | 2020-04-07 | 2020-09-23 | 주식회사 에스엔투 | Repair and reinforcement composition for long life of aged reinforced concrete structure and construction method using same |
| KR102246100B1 (en) * | 2020-08-24 | 2021-04-30 | 주식회사 에스엔투 | Composition for repair and reinforcement of underground infrastructure facilities exposed to corrosive environments and construction method using the same |
| KR102246101B1 (en) * | 2020-08-24 | 2021-04-30 | 주식회사 에스엔투 | Composition for maintenance and reinforcement of vibration-generating structures during public and construction method using the same |
| KR102265457B1 (en) * | 2020-11-26 | 2021-06-16 | 한국건설기술연구원 | Surface treatment cementitious composite by mortar for mixing photocatalyst and polymer fiber, and construction method for the same |
| KR102271429B1 (en) * | 2020-11-20 | 2021-07-02 | 한국건설기술연구원 | Composition of high performance cementitious composite (hpcc) for mixing phorocatalyst, and manufacturing method for the same |
| CN115536435A (en) * | 2022-10-14 | 2022-12-30 | 浙大宁波理工学院 | Bacteriostatic and antiseepage treatment method for reinforced concrete and its member |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100846159B1 (en) | 2007-12-21 | 2008-07-14 | 주식회사 승화이엔씨 | A composition water soluble polymer for concrete structure section repair and surface recover |
| KR100869080B1 (en) * | 2008-03-20 | 2008-11-21 | (주) 테크원 | Resin mortar composition and paved structure by using the composition |
| KR100909997B1 (en) | 2009-04-07 | 2009-07-29 | (주)삼원건설시스템 | Composition of acid-resistant repair mortar and acid-resistant surface coating, and repair method of section and surface of concrete using its |
| KR100913255B1 (en) * | 2009-05-14 | 2009-08-24 | 김영주 | Composition of cement mortar for reinforcing of section and method of using thereof |
| KR101105490B1 (en) | 2011-10-12 | 2012-01-13 | 토정건설(주) | The construction method of concrete surface's reinforce |
| KR101512962B1 (en) * | 2014-11-13 | 2015-04-21 | (주)코메스코리아 | Mortar Composition for Repair Section and Repair Method Section Using Thereof |
| KR101533093B1 (en) * | 2015-04-10 | 2015-07-02 | 주식회사 이레하이테크이앤씨 | High-Early Strength cement concrete composition and concrete pavement repair it using the same method using silicon sludge |
-
2016
- 2016-02-16 KR KR1020160017985A patent/KR101675325B1/en active IP Right Grant
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100846159B1 (en) | 2007-12-21 | 2008-07-14 | 주식회사 승화이엔씨 | A composition water soluble polymer for concrete structure section repair and surface recover |
| KR100869080B1 (en) * | 2008-03-20 | 2008-11-21 | (주) 테크원 | Resin mortar composition and paved structure by using the composition |
| KR100909997B1 (en) | 2009-04-07 | 2009-07-29 | (주)삼원건설시스템 | Composition of acid-resistant repair mortar and acid-resistant surface coating, and repair method of section and surface of concrete using its |
| KR100913255B1 (en) * | 2009-05-14 | 2009-08-24 | 김영주 | Composition of cement mortar for reinforcing of section and method of using thereof |
| KR101105490B1 (en) | 2011-10-12 | 2012-01-13 | 토정건설(주) | The construction method of concrete surface's reinforce |
| KR101512962B1 (en) * | 2014-11-13 | 2015-04-21 | (주)코메스코리아 | Mortar Composition for Repair Section and Repair Method Section Using Thereof |
| KR101533093B1 (en) * | 2015-04-10 | 2015-07-02 | 주식회사 이레하이테크이앤씨 | High-Early Strength cement concrete composition and concrete pavement repair it using the same method using silicon sludge |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102158535B1 (en) * | 2020-04-07 | 2020-09-23 | 주식회사 에스엔투 | Repair and reinforcement composition for long life of aged reinforced concrete structure and construction method using same |
| KR102246100B1 (en) * | 2020-08-24 | 2021-04-30 | 주식회사 에스엔투 | Composition for repair and reinforcement of underground infrastructure facilities exposed to corrosive environments and construction method using the same |
| KR102246101B1 (en) * | 2020-08-24 | 2021-04-30 | 주식회사 에스엔투 | Composition for maintenance and reinforcement of vibration-generating structures during public and construction method using the same |
| KR102271429B1 (en) * | 2020-11-20 | 2021-07-02 | 한국건설기술연구원 | Composition of high performance cementitious composite (hpcc) for mixing phorocatalyst, and manufacturing method for the same |
| KR102265457B1 (en) * | 2020-11-26 | 2021-06-16 | 한국건설기술연구원 | Surface treatment cementitious composite by mortar for mixing photocatalyst and polymer fiber, and construction method for the same |
| CN115536435A (en) * | 2022-10-14 | 2022-12-30 | 浙大宁波理工学院 | Bacteriostatic and antiseepage treatment method for reinforced concrete and its member |
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