KR20180079787A - Reinforcing method for resisting earthquake using nature friendly and earthquake-resistant mortar - Google Patents

Abstract

The present invention provides a seismic reinforcing method using high-performance fiber-reinforced seismic reinforcing mortar. A problem to be solved is to provide a seismic reinforcing method using a high-performance and eco-friendly fiber-reinforced seismic reinforcing mortar having an excellent seismic reinforcing property without addition of cement. The method includes: providing a surface treatment layer on a surface of a concrete structure after cleaning the surface of the concrete structure; providing a high-performance fiber reinforcing material to the concrete structure having the surface treatment layer; and spraying or applying a seismic reinforcing mortar mixed with volcanic rock powder on the concrete structure having the high-performance fiber reinforcing material so as to form a high-performance fiber-reinforced seismic reinforcing layer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake-resistant mortar,

The present invention relates to an anti-seismic reinforcing method using a high-performance fiber reinforced anti-seismic mortar, and more particularly, to an anti-seismic reinforcing method using a high-performance fiber reinforced earthquake-resistant mortar which has excellent abrasion resistance, heat resistance, heat resistance, soundproofing, sound absorption performance as well as abrasion resistance, It is not influenced by pollution, has no risk of carcinogenicity, has high resistance to corrosion, non-toxic, chemical, alkali, acid, solvent, low friction coefficient, high strength compressive strength and bending strength, The present invention relates to a seismic reinforcing method for a concrete structure using a high performance fiber-reinforced earthquake-resistant mortar.

Recently, as the interest in the environment has increased in the construction sector, resource recycling and development of eco-friendly materials / construction methods are increasing. However, in spite of these efforts, there are problems such as safety and durability of seismic failure due to failure to properly cope with the structural and structural diversification of the structure. As a result, safety and durability of the structure are not secured, And economic loss due to construction workability.

Especially reinforced concrete structures. Exposed and unexposed earthquake proofing methods applied to structures such as underground structures and communal areas, waterworks facilities, underground outer walls, parking lots, railway structures, roadbed and road pavements. Until now, the seismic proofing method of the facility has been mainly composed of sheet-based fiber material and shear reinforcement. Nonflammable FRP reinforcement. And seismic reinforcement using siliceous system powder type earthquake resistant reinforcement. However, there is a problem of defects in the new and structure stent part of the sheet system, lack of response to the structure behavior in the cemented earthquake proofing method, hardening after construction In recent years, fiber-based sheet seismic resisting methods have been applied by replacing existing structures due to problems such as poor adhesion to existing structures due to drying process. It is difficult to secure the seismic performance according to the adherence and elasticity ratio of the constant contact portion and the hardening or drying process can not be avoided so that it can not cope with the seismic performance effect according to the seismic performance criterion In fact. In addition, earthquakes are the most dramatic phenomena in natural disasters, and they are a terrible phenomenon that causes damage to human lives and property. The history of human beings has been recorded along with the history of mankind. Currently, Is about 20 times happening. It is common for seismologists that such an earthquake occurs mainly in earthquake-stricken area earthquakes, but may occur anywhere on the surface of the earth, although the magnitude and frequency are different.

There are many historical earthquakes on the Korean peninsula, which are often mistaken for earthquakes, and we can not exclude the possibility of an earthquake in the future. In accordance with this recognition, seismic design techniques have been introduced to buildings from 1988, and from 2014, disaster and safety management laws have been established to establish seismic design standards based on the establishment of seismic reinforcement plans for existing facilities.

These regulations further recognized the importance of seismic design for buildings after the Kobe earthquake in 1994. Since 1996, they have also strengthened the seismic standards of buildings, Apartments) are obliged to apply the earthquake regulations.

Particularly, in the case of remodeling construction, which is advantageous in terms of construction period and cost and is in the spotlight because the seismic design is not reflected in most of the apartment buildings built before the mandatory implementation of the seismic design as mentioned above, the frame made of reinforced concrete It is necessary to strengthen the earthquake resistance by overlaying the concrete with high strength so that it can endure the earthquake on the frame after removing all the structures (structure). However, the method of covering the concrete can not guarantee the stability due to the adhesion problem between the new mortar and aged concrete, and the self weight is increased.

Patent Registration No. 10-0749926 (Aug. 14, 2007)

An object of the present invention is to provide an earthquake-proof reinforcement method using a high-performance fiber reinforced earthquake-resistant mortar having environment-friendliness and excellent seismic resistance without addition of cement.

The present invention provides a method of manufacturing a concrete structure, comprising: a surface treatment layer construction step of removing foreign matter from a surface of a concrete structure and constructing a surface treatment layer; A step of installing an elastic stiffener on the concrete structure on which the surface treatment layer is installed; And an earthquake-proofing step of forming an earthquake-resistant reinforcing layer by spraying or finishing earthquake-resistant mortar containing high-performance fibers (HF) in a concrete structure provided with an elastic reinforcing material.

 The present invention is characterized in that no cement is added and no toxicity is caused by cement. The volcanic rock powder contained therein is excellent in fire retardancy, heat resistance, heat resistance, soundproofing and sound absorption performance due to blocking of the toxicity of cement as well as abrasion resistance, It is not affected by radioactivity, ultraviolet rays, biochemical pollution, no risk of carcinogen, corrosion-resistant, non-toxic. It has a high resistance to chemicals, alkali, acid and solvent, low friction coefficient, high strength compression strength and flexural strength, and prevents harmfulness to the human body, thereby enabling a comfortable facility environment and safe life protection, and excellent bending strength and tensile strength And it has an effect of providing seismic performance by providing strength.

The present invention is characterized in that the high strength fiber (HF) reinforcement and the mortar are simultaneously installed in the concrete structure, and the volcanic rock powder, which is a component of the earthquake-resistant mortar, is injected into the elastic fiber reinforcement, And the seismic performance is further improved.

The present invention is based on the premise that the volcanic rock powder is blended so that it is not affected by pollution such as abrasion resistance, erosion resistance, light weight, nuclear radiation, ultraviolet ray and biochemical as well as excellent fire retardancy, heat resistance, heat resistance, soundproofing and sound absorption performance, Corrosive, non-toxic. High resistance to chemicals, alkalis, acids and solvents makes it possible to maintain a pleasant environment for the environment, vegetation and water purification.

The volcanic rock powder of the present invention is not affected by pollution such as abrasion resistance, erosion resistance, light weight, nuclear radiation, ultraviolet ray and biochemical as well as excellent fire retardancy, heat radiation, heat resistance, soundproofing and sound absorption performance, . It has high resistance to chemicals, alkali, acid and solvent, low friction coefficient, high strength compressive strength and flexural strength, and prevents sick house syndrome, thus providing pleasant environment and safe environment.

The present invention can be applied not only to the construction of a new concrete structure but also to the repair / reinforcement of existing concrete structures. In addition, The low tensile strength and the compressive strength of the mortar are improved, and the waterproof function and the seismic function for the concrete structure are provided.

The present invention can be applied to reinforced concrete structures, apartments, single-family homes, school buildings, and public facilities, which are less than predetermined earthquake-resistance performance ratings, to reinforce seismic performance within economical and reasonable ranges.

The present invention is applicable to an underground structure and a tunnel structure in which a structure is vibrated in compliance with a ground motion in the ground, and has an excellent seismic effect.

1 is an exemplary view showing an anti-seismic reinforcement method according to the present invention;
Fig. 2 is a structural example showing an anti-seismic reinforcement method according to the present invention
3 is an exemplary view showing the construction of a high performance fiber reinforcing material according to the present invention.

FIG. 1 is a block diagram showing an anti-seismic reinforcement method according to the present invention, FIG. 2 is a structural example showing an anti-seismic reinforcement method according to the present invention,

The present invention relates to a surface treatment layer construction step of removing foreign matters on the surface of a concrete structure (100) and constructing a surface treatment layer (20); A step of installing a high-performance fiber reinforcing material (30) on the concrete structure (100) on which the surface treatment layer (20) is installed; An earthquake-proofing step of spraying or finishing earthquake-resistant mortar containing volcanic rock powder and high-performance fiber (HF) to the concrete structure 100 provided with the high-performance fiber reinforcement 30 to form the seismic strengthening layer 30 have.

The present invention further includes a coating step of forming a coating layer (40) by applying a finish coating material to the surface of the anti-seismic layer.

The surface treatment layer construction step may include removing a foreign matter or a deteriorated portion of the concrete structure 100 such as a railway structure, a building structure, etc., and then applying an asphaltic waterproofing material to the surface of the concrete structure from which the foreign matter has been removed to form a surface treatment layer 20 do.

In addition, when the concrete structure 100 is damaged, the surface treatment layer is filled with the earthquake-resistant mortar containing the volcanic rock powder of the present invention described later to repair the surface of the concrete structure 100, .

The step of installing the reinforcing material is a step of installing the high performance fiber reinforcing material 20. The reinforcing material 20 is fixed to the concrete structure 100 by fixing means 50 such as fixing bolts or anchor clips or wires or the like. Install it.

FIG. 2 (a) shows a maintenance and reinforcement structure for a concrete structure (wall), and FIG. 2 (b) shows a maintenance and reinforcement structure for a concrete structure (ceiling) The length of the fixing means should be selected in consideration of the thickness of the concrete covering and the structural stability of the facility.

In addition, the high performance fiber reinforcing material may be installed in a lattice shape or a straight shape, and when installed on the wall, the crossing portions may be connected by wires without fixing means.

The high performance fiber reinforcement 20 is formed by processing volcanic rock fibers having a tensile strength of 4,000 to 4,300 MPa, a modulus of elasticity of 90 to 95 kg and a elongation of 3.45 to 3.52% into a sheet or circular rope type 22, Powder 21 is impregnated and hardened at a predetermined pressure is used.

The volcanic rock fiber is obtained by pulverizing volcanic rock, heating it, melting it and cooling it to form an organic material for spinning, and then spinning it by heating and melting.

That is, the volcanic rock fibers constituting the high-performance fiber reinforcing material according to the present invention are not produced by pulverizing volcanic rocks, melting them by heating, and directly spinning them, but they also produce vitrified volcanic rocks vitrified by heating and cooling, Volcanic rocks produced by indirect methods of heating and melting volcanic rocks are used.

To explain this more specifically, the volcanic rock fibers,

Crushing the volcanic rock to a size of about 1 to about 0.5 cm;

Heating and cooling the crushed volcanic rock by heating and firing at 1,450 ° C to 1,550 ° C for 3 to 4 hours to form a vitrified volcanic rock;

The volcanic rock is pulverized to a size of about 0.5 to 1.5 cm 3, is melted in a crucible bushing at 1,250 ° C. to 1,350 ° C., and then discharged at a constant pressure of 5 to 20 kPa through a nozzle of the bushing. ;

And a winding step in which the discharged melt is wound on the winder drum.

The heating and cooling step is a step of producing organic materials for volatilization. The volcanic rock is melted at 1,400 to 1,450 ° C, for example, at 1,450 ° C or less. When heated and melted at a temperature lower than 1,450 ° C, the temperature is 1,200 ° C to 1,350 ° C The volcanic rock is melted by heating at 1,450 ° C to 1,550 ° C, preferably 1,500 ° C to 1,550 ° C for 3 to 4 hours.

The fiber discharge step is a step for obtaining continuous fibers having a diameter of 7 to 30 탆. The rotational speed of the winder drum, the bushing temperature, the viscosity of the melt, and the pressure acting on the melt in the bushing are closely related to each other, It is very important.

The present invention relates to a process for producing a wadding drum having a bushing temperature of 1,250 DEG C to 1,350 DEG C, preferably about 1,250 DEG C, an internal pressure of 5 to 20 kPa, preferably about 10 kPa, a rotational speed of the winder drum of 1000 rpm (942 m / Under these conditions, the continuous fibers can be obtained without breaking the oil until the melt in the bushing is completely exhausted.

In the fiber discharging step and the winding step, since the melted material is in a state of being dripped at the nozzle end of the bushing, the operator first pulls the ends of the fibers by using a tweezers to attach the ends of the fibers to the winder drums, Turn it to operate at speed.

The volcanic rock powder has a powder of about 2,000 to 6,000 cm 2 / g, which is suitable for improving the impregnating performance and improving the adhesion performance of the high performance fiber reinforcement 30 and the seismic strengthening layer 10. The volcanic rock powder will be described in detail in the earthquake-resistant mortar described later.

The earthquake-proofing step is a step of generating and installing earthquake-resistant mortar. The earthquake-resistant mortar is sprayed or plastered to have a thickness of about 3 cm to 10 cm on the installed high-performance fiber reinforcing material.

The earthquake-resistant mortar applied in this way is impregnated with the volcanic rock powder on the surface of the high-performance fiber reinforcement, and is integrated without being separated from the high-performance fiber reinforcement.

Wherein the earthquake-resistant mortar comprises 10 to 50 wt% of volcanic rock powder, 0.1 to 5 wt% of high performance fiber (HF), 2 to 30 wt% of fly ash, 4 to 6 wt% of inorganic powder, 10 to 50 wt% of silica (5.6) 0.1 to 3 wt% of a fluidizing agent, 0.1 to 3 wt% of a thickener, 0.1 to 2 wt% of a retarder, 0.1 to 2 wt% of an accelerator, and 0.1 to 2 wt% of a defoaming agent.

The volcanic rock powder is a mineral belonging to the volcanic rock system containing calcium, sodium, potassium, magnesium, iron, aluminum, hydroxyl, fluorine, etc. and is an eco-friendly material with excellent bending strength and tensile strength. Chemical components.

[Table 1]

As shown in Table 1, since the volcanic rock powder of the present invention having a high content of silicon dioxide (SiO ₂ ) and aluminum oxide (Al ₂ O ₃ ) can be a factor affecting the durability according to the particle size, milled to have a powder of about 2,000 to 6,000 cm < 2 > / g, preferably a powder having a powder density of 4,000 to 6,000 cm < 2 > / g.

The above-mentioned volcanic rock powder has no risk of carcinogenicity, is resistant to abrasion, erosion resistance, light weight, nuclear radiation, ultraviolet ray, biochemical pollution as well as excellent fire retardancy, heat radiation, heat resistance, soundproofing and sound absorption performance. High compressibility / flexural strength of chemical, alkali, acid and solvent with high resistance, low friction coefficient and tensile strength of 2,500 to 4,800 MPa, and has an environmentally friendly material having an application range of -260 DEG C to 982 DEG C . In addition, the volcanic rock powder has a function of removing a cause of decay and retaining freshness by adsorbing and decomposing harmful substances and heavy metals.

In addition, the volcanic rock powder may be added and mixed with a coating solution prepared by mixing silicone oil and water at a weight ratio of 1: 2. When such a coated volcanic rock powder is compounded, the volcanic rock powder further improves the uniform dispersibility in the mixture.

In addition, since the volcanic rock powder has a function of absorbing toxic substances and decomposing heavy metals, when it is used as an anti-seismic composition of the present invention, the release of harmful components in the concrete is blocked and the toxicity of concrete is greatly reduced by adsorption neutralization in pores And further has a side effect.

The high performance fiber (HF) means a volcanic rock fiber constituting a high performance fiber reinforcing material. Such high-performance fibers (HF) are added to earthquake-resistant mortar to improve strength (compressive strength and flexural strength), to enhance tensile strength, to secure elasticity and structural safety, In addition, it has high ultraviolet resistivity and has a good dispersing ability in the mortar mixing process, and is evenly distributed to form a combined body, thereby enhancing durability.

Further, the high performance fiber (HF) forms a fiber net by mixing with a mortar or a resin binder to perform functions such as reinforcement, crack prevention, shrinkage reduction, seismic durability improvement, and the like.

When the high performance fiber (HF) is added in an amount less than 0.1 wt%, the effect can not be expected. When the high performance fiber (HF) is added in an amount exceeding 5 wt%, the workability is lowered due to the thickening effect. The high-performance fiber (HF) is preferably added in an amount of 2 to 5 wt% in consideration of the improvement of seismic durability and the formation of a fibrous film by bonding with an earthquake-resistant mortar or a resin binder.

The fly ash is a material of fine particles produced when coal or heavy oil is burned. The fly ash is mainly composed of silica (SiO ₂ ), aluminum oxide (Al ₂ O ₃ ) and glassy, And serves to enhance the long-term strength by a latent hydraulic reaction. An average particle diameter of 5 μm or less and about 6,000 cm 2 / g or less is used.

If the amount of the fly ash is less than 2 wt%, the amount of the fly ash is too small to exert the performance of the fly ash. If the amount of the fly ash is more than 30 wt%, the adhesion may be deteriorated.

The above silica sand is used in combination of 40 to 60 wt% of silica sand and 60 to 40 wt% of silica sand having a No. 5 grain size. When adjusting the particle size, the workability of seismic mortar is excellent. The workability of the mortar tends to decrease as the silica sand ratio increases. It is preferable that the silica sand is mixed with the silica sand of No. 6 and the silica sand of No. 5 at a weight ratio of 1: 1.

The inorganic powder has a function of suppressing initial cracking and drying shrinkage, having a torsion rigidity, and improving the adhesion. Alumina cement or alumina cement and silica fume mixed at a weight ratio of 3: 1 to 2 are used as such an inorganic powder.

The silica fume is a kind of silica fine particles made by the dry process and is silica fine particles made by burning silicon tetrachloride, chlorosilane, etc. at a high temperature in an atmosphere of hydrogen and oxygen. The silica fume functions as a ball bearing effect by the constituent particles to decrease the dispersibility and the unit quantity in the mortar, thereby increasing the strength and the bending strength, filling the space between the pores of the powder, realizing waterproofing and high strength, And to extend the durability life of the structure.

When the inorganic powder is added in an amount of less than 4 wt%, the coagulation time of the mortar is slowed down. When the inorganic powder is added in an amount exceeding 6 wt%, the mortar rapidly hardens and the workability is lowered.

The resin binder is added for improving the flexibility, chemical resistance, crack resistance, adhesion and strength. To 100 parts by weight of the unsaturated polyester type polymerizable liquid resin, 10 to 40 parts by weight of a reactive acrylic resin, 20 to 100 parts by weight of a reactive monomer 10 to 30 parts by weight of a curing agent and 0.1 to 3 parts by weight of a reaction catalyst.

The unsaturated ester resin has elasticity and excellent crack resistance, and can be prepared by polymerizing glycol, phthalic acid and methyl methacrylate (MMA). Preferably, the unsaturated ester resin is a glycol having two or more functional groups (Glycol ), Phthalic acid having two functional groups, and methyl methacrylate (MMA).

The reactive acrylic resin is used for reinforcing tackiness and has a molecular weight of 50,000 to 60,000 and a viscosity of 200 to 1000, preferably 300 to 500 cps (40% intoluene), and is used in an amount of less than 10 parts by weight or more than 40 parts by weight , The viscosity of the resin binder is increased and the reaction time is shortened. Therefore, it should be added within the proper range.

Examples of such reactive acrylic resins include acrylonitrile, butyl acrylate, butyl methacrylate, 2-ethylhexyl acrylate, acrylic acid, 2-hydroxyethyl (meth) acrylate, methyl (meth) acrylate, styrene monomer Acrylate, glycidyl (meth) acrylate, isooctyl acrylate, stearyl methacrylate and the like, or PMMA (poly (methyl methacrylate)).

The reactive monomer may be at least one selected from methyl methacrylate (MMA), 2-hydroxyethyl methacrylate (2-HEMA), and BAM (butyl acrylate monomer) , The MMA improves hardness and weatherability, the 2-HEMA improves hardness and acid resistance, and the BAM improves flexibility and adhesion. The reactive monomer is more preferably cured within a range of 20 to 100 parts by weight, preferably within a range of about 25 to 80 parts by weight.

The curing agent may be granular benzoyl peroxide (BPO) or CABPO. The CABPO is in the form of a liquid paste in which BPO is dispersed in dibutyl phthalate (DBP) and contains BPO in an amount of 30 to 80 wt%.

Such a curing agent is used in an amount of 10 to 30 parts by weight based on 100 parts by weight of the unsaturated polyester-based polymerizable liquid resin. When the curing agent is out of this range, partial curing or curing is shortened.

When the reaction catalyst is less than 0.1 parts by weight, DMA (dimethyl aniline), Co-octate (cobalt octate) or DMPT (N-dimethyl-p-toluidine) And when it exceeds 3 parts by weight, a relatively large amount of self heat due to rapid curing occurs, causing a shrinkage phenomenon.

The resin binder is bonded to the unsaturated polyester-based polymerizable liquid resin, the reactive monomer, the curing agent and the reactive acrylic resin by a radical initiating reaction to increase adhesion and strength. Due to the coexistence of these bonds, unsaturated polyester- The problem of curing shrinkage that may occur upon curing of the liquid-phase resin is solved and excellent reactivity is obtained. In addition, the resin binder plays a role of cross-linking between the particles of the quick hard powder and the natural mineral powder and plays a role of significantly improving the adhesive force, flexibility, plasticity, abrasion resistance and workability when cured. In addition, the resin binder has a function of forming a fibrous film between the particles of the natural mineral powder and the quick hard powder together with the high performance fiber (HF) to serve as a crosslinking agent, thereby further preventing cracking and further improving flexibility.

The fluidizing agent, the thickening agent, the retarder, the accelerator, and the defoaming agent are used for enhancing the durability and the watertightness and for facilitating the workability. Known or predominant ones used in the mixing of mortar or resin mortar, Naphthalene-based, lignin-based and melamine-based ones, or two or more of them may be used. As the thickening agent, a methyl cellulose type or polyvinyl acetate type may be used, and a detailed description thereof will be omitted.

The addition ratio of the earthquake-proof mortar of the present invention as described above is intended to set a range of viscosity, elasticity, strength and the like for simultaneously providing waterproof and earthquake-proof effects, and is limited to an optimum compounding ratio in consideration of applicability and versatility.

In addition, since the spraying pressure at the time of pouring can be used at a known spraying pressure, detailed description of the spraying conditions will be omitted.

In the coating step, the coating material is coated on the surface of the dust-proof mortar, and the application of the finishing material or the coating material is well known in the art, so a detailed description thereof will be omitted.

Hereinafter, the present invention will be described in detail with reference to Examples.

Example 1

The mortar was prepared by blending volcanic rock powder, high performance fiber (HF), fly ash, silica sand, alumina cement, silica fume, resin binder, fluidizing agent, thickener, retarder, accelerator, defoamer according to the following Table 2, Nine specimens of 50 mm × 50 mm × 50 mm specimens (three specimens of No.1, No.2 and No.3, respectively) were formed, and the compressive strength (KS F 2424) and flexural strength KS F 2408) were measured.

The high-performance fiber (HF) was crushed to a diameter of 1 to 0.5 cm and heated and melted at 1,450 ° C to 1,550 ° C for 4 hours. After cooling, the glassy nitrified volcanic rock was heated to a size of about 1 cm 3 , Melted at 1,250 ° C. to 1,350 ° C. in a crucible bushing, and then discharged at a constant pressure of 15 to 20 kPa to produce volcanic rock fibers. The resin binder is an unsaturated polyester-based polymerizable 40 parts by weight of a reactive acrylic resin, 50 parts by weight of a reactive monomer (2-hydroxyethyl methacrylate), 20 parts by weight of a curing agent (lipped benzoyl peroxide) and 2 parts by weight of a reaction catalyst (DMA) And the results are shown in Table 3

[Table 2]

[Table 3]

Example 2

The volcanic rocks were crushed to a diameter of 1 to 0.5 cm and heated and fused at 1,450 ° C to 1,550 ° C for 4 hours and cooled. The glassy nitrified volcanic rocks were crushed to a size of about 1 cm 3 by heating and cooling, and crucible bushing ), Melted to 1,250 ° C. to 1,350 ° C., and melted at a constant pressure of 15 to 20 kpa to produce volcanic rock fibers, which were processed into rod shapes having a length of 1,000 mm and a diameter of 30 mm, The powders were uniformly sprayed with volcanic rock powders of 2,000 to 6,000 cm2 / g and impregnated, followed by heating and curing to form high-performance fiber rods.

The high performance fiber (HF) rod (test piece) thus formed, the cylindrical differential rods (contrast group 1) having protrusions formed on the surface, and the pulling strength for the impregnation rod (contrast group 2) And the results are shown in Table 4. Since the contrast groups 1 and 2 are all well-known commercially sold reinforcing materials, a detailed description thereof will be omitted.

[Table 4]

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(10): Seismic strengthening layer (20): Surface treatment layer
(30): high performance fiber reinforcement (40): coating layer
(50): Fixing bolts (100): Concrete structures

Claims (8)

A surface treatment layer construction step of removing foreign matter from the surface of the concrete structure 100 and constructing the surface treatment layer 20;
A step of installing a high-performance fiber reinforcing material (30) on the concrete structure (100) on which the surface treatment layer (20) is installed;
Reinforcement step of forming a high performance fiber-reinforced earthquake-resistant reinforcement layer 10 by spraying or finely applying earthquake-resistant mortar mixed with volcanic rock powder and high-performance fiber to a concrete structure 100 in which a high-performance fiber reinforcement 30 is installed Seismic Retrofit Method Using High Performance Fiber Reinforced Earthquake Mortar.
The method of claim 1,
The earthquake-resistant mortar comprises 10 to 50 wt% of volcanic rock powder, 0.1 to 5 wt% of high performance fiber, 2 to 30 wt% of fly ash, 4 to 6 wt% of inorganic powder, 10 to 50 wt% of silica sand (5.6) Reinforced earthquake-resistant mortar characterized in that it comprises 0.1 to 3 wt% of an inorganic filler, 0.1 to 3 wt% of a thickener, 0.1 to 2 wt% of a retarder, 0.1 to 2 wt% of an accelerator, and 0.1 to 2 wt% of an antifoamer.
The method of claim 1,
The high performance fiber reinforcing material 20 is obtained by processing volcanic rock fibers having a tensile strength of 4,000 to 4,300 MPa, a modulus of elasticity of 90 to 95 kg and a elongation of 3.45 to 3.52% into a sheet or a round rope type 22, Wherein the volcanic rock powder (21) is sprayed and cured at a predetermined pressure.
The method according to claim 2 or 3,
The seismic strengthening method using the high performance fiber-reinforced earthquake-resistant mortar characterized in that the volcanic rock powder has the chemical composition according to [Table 1].
[Table 1]

The method of claim 2,
Wherein the high performance fiber is a volcanic rock fiber having a tensile strength of 4,000 to 4,300 MPa, a modulus of elasticity of 90 to 95 ㎬, and a elongation of 3.45 to 3.52%.
The method according to claim 3 or 5,
The volcanic rocks,
Crushing the volcanic rock to a size of 1 to 0.5 cm;
Heating and cooling the crushed volcanic rock by heating and firing at 1,450 ° C to 1,550 ° C for 3 to 4 hours to form a vitrified volcanic rock;
The volcanic rock is pulverized to a size of about 0.5 to 1.5 cm 3, is melted in a crucible bushing at 1,250 ° C. to 1,350 ° C., and then discharged at a constant pressure of 5 to 20 kPa through a nozzle of the bushing. ;
And a winding step of winding the discharged melt onto the winder drum. The method for reinforcing seismic resistance using the high performance fiber-reinforced earthquake-resistant mortar.
The method of claim 2,
The inorganic powder may be alumina cement,
Wherein the alumina cement and the silica fume are mixed at a weight ratio of 3: 1 to 2; and a seismic strengthening method using the high performance fiber-reinforced earthquake resistant mortar.
The method of claim 2,
In the resin binder,
Wherein 10 to 40 parts by weight of a reactive acrylic resin, 20 to 100 parts by weight of a reactive monomer, 10 to 30 parts by weight of a curing agent and 0.1 to 3 parts by weight of a reaction catalyst are added to 100 parts by weight of an unsaturated polyester-
Examples of the reactive acrylic resin include acrylonitrile, butyl acrylate, butyl methacrylate, 2-ethylhexyl acrylate, acrylic acid, 2-hydroxyethyl (meth) acrylate, methyl (meth) acrylate, styrene monomer, Acrylate, glycidyl (meth) acrylate, isooctyl acrylate, stearyl methacrylate, or PMMA (poly (methyl methacrylate)
The reactive monomer is at least one selected from methyl methacrylate (MMA), 2-hydroxyethyl methacrylate (2-HEMA) and BAM (butyl acrylate monomer)
The curing agent is granular benzoyl peroxide (BPO) or CABPO,
Wherein the reaction catalyst is DMA (dimethyl aniline), Co-octate (cobalt octate) or DMPT (N, NDimethyl-p-toluidine).

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