KR101655108B1

KR101655108B1 - Reinforcing method for resisting earthquake using nature friendly and earthquake-resistant mortar

Info

Publication number: KR101655108B1
Application number: KR1020150125553A
Authority: KR
Inventors: 신민호; 김성희; 김미숙; 서순복; 백지훈
Original assignee: 케이알엠건설 주식회사; 한국철도기술연구원
Priority date: 2015-09-04
Filing date: 2015-09-04
Publication date: 2016-09-07

Abstract

The present invention relates to an earthquake-proof reinforcement method using seismic resistant mortar containing earth ore powder, and its object is to provide an earthquake-resistant reinforcement method using earthquake-resistant mortar containing earth ore powder having excellent anti- .
The present invention relates to a waterproof layer construction step of removing foreign matter from a surface of a concrete structure and constructing a waterproof layer; Installing a stiffener to install a resilient stiffener on a concrete structure with a waterproof layer; And an anti-seismic reinforcing step of forming an anti-seismic reinforcing layer by spraying or plastering the earthquake-resistant mortar mixed with the raw ore powder into the concrete structure provided with the elastic reinforcement.

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 earthquake-proof reinforcement method using an earthquake-resistant mortar, and is an earthquake-proof reinforcement method using an environmentally-friendly earthquake-resistant mortar having an excellent compressive strength and a bending strength, .

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, problems such as waterproofing function and durability have occurred due to failure to properly cope with the structural and structural diversification of the structure. As a result, the safety and durability of the structure are not ensured, and maintenance, reinforcement, Which causes economic losses.

Especially, many problems are exposed in the exposed and non - exposed waterproofing methods applied to structures such as railway structures, underground structures and communal areas, waterworks facilities, underground exterior walls, parking lots, road pavements. So far, the waterproofing method of underground structures has been largely divided into an external waterproofing method using a sheet-based waterproofing material, an external waterproofing method using a cement liquid-type waterproofing material and a siliceous-based powdered waterproofing material. However, In recent years, there has been a problem in that the waterproofing method of the cement based waterproofing method is insufficient in correspondence with the behavior of the structure, and air delay due to hardening or drying process after the construction is frequently occurred. It is difficult to secure a constant coating film thickness and it is impossible to avoid a curing or drying process and thus it is not possible to cope with the field demand for shortening of the air.

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. As a result of this recognition, seismic design techniques have been introduced to buildings since 1988, and since 1992, the standard specification for highway bridges has been revised to make seismic design of bridges.

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, since the seismic design is not reflected in the railway structures and apartment houses built before the implementation of the earthquake-resistant design as mentioned above, the remodeling works which are advantageous in terms of the construction period and cost, The seismic retrofitting work is necessary in order to overcome the earthquake on the frame after covering all of the framed structures. 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 an earthquake-resistant mortar having excellent earthquake resistance while having environment-friendliness without adding cement.

The present invention relates to a waterproof layer construction step of removing foreign matter on a surface of a concrete structure and constructing a waterproof layer; Installing a stiffener to install a resilient stiffener on a concrete structure with a waterproof layer; And an anti-seismic reinforcing step of forming an anti-seismic reinforcing layer by spraying or plastering the earthquake-resistant mortar mixed with the raw ore powder into the concrete structure provided with the elastic reinforcement.

The present invention prevents the occurrence of toxicity due to cement because no cement is added and prevents the sick house syndrome caused by blocking the toxicity of the cement by the contained ore powder, thereby making it possible to provide a comfortable living environment and safe life protection, And tensile strength, thereby providing an effect of providing an earthquake-proof performance.

Since the elastic stiffener and the earthquake-resistant mortar are provided at the same time, and the ore ore powder as the component of the earthquake-resistant mortar is injected into the elastic stiffener to integrally manufacture, the adhesion force between the elastic stiffener and the earthquake- .

The present invention provides a beneficial environment for the human body such as pleasant living environment, vegetation and water quality purification through the combination of raw ore powder and infrared rays and anti-moldiness, and a large amount of far-infrared rays and anions, Lt; / RTI >

The green stone powder of the present invention is capable of releasing a large amount of hydroton energy by low-temperature heat treatment, and has an environment-friendly effect of hydrolyzing toxic substances such as formaldehyde formed by hydration of concrete into a harmless natural state.

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 subway, railway structures, apartments, single-family homes, school buildings, and public facilities that are less than a predetermined seismic performance rating and can enhance seismic performance within an economical and reasonable range.

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 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

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 waterproof layer construction step of removing foreign matter from a surface of a concrete structure (100) and constructing a waterproof layer (20); A stiffener installing step of installing an elastic stiffener (30) on the concrete structure (100) in which the waterproof layer (20) is installed; And an earthquake-proofing step of forming an earthquake-resistant reinforcing layer 10 by spraying or plastering the earthquake-resistant mortar mixed with the raw ore powder into the concrete structure 100 in which the elastic stiffener 30 is installed.

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 waterproof layer construction step removes foreign matter or deteriorated portion of the concrete structure 100 and forms a waterproof layer 20 by applying an asphalt waterproofing material to the surface of the concrete structure from which the foreign matter is removed.

Also, in the waterproof layer construction step, when damage such as dropping occurs on the surface of the concrete structure 100, the surface treatment 50 may be performed by filling the earthquake-resistant mortar mixed with the raw ore powder of the present invention.

In the step of installing the reinforcing material, the elastic pad or the elastic rod is installed as the elastic stiffener 30. The elastic stiffener 30 is fixed to the concrete structure 100 by an anchor clip or the like.

The elastic stiffener is formed by processing an unsaturated polyester (UPE) resin into a pad or a rod type, spraying and curing the virgin powder with a predetermined pressure to the processed unsaturated polyester (UPE) resin.

At this time, the raw ore powder to be impregnated and sprayed has a powder of about 4,000 to 6,000 cm 2 / g, which is suitable for improving the impregnating performance and improving the adhesion of the elastic stiffener 30 and the seismic strengthening layer 10. The raw ore powder will be described in detail in the earthquake-resistant mortar described later.

The reinforcing step is a step of generating and pouring earthquake-resistant mortar, and spraying or finishing is applied to the installed elastic reinforcement so as to have a thickness of about 5 cm to 10 cm. In the earthquake-resistant mortar applied in this manner, the surface of the elastic reinforcement is impregnated with the raw ore powder, and is integrated without being separated from the elastic reinforcement.

Wherein the earthquake-resistant mortar comprises 20 to 50 wt% of raw ore powder, 0.1 to 5 wt% of nylon fiber, 10 to 50 wt% of silica sand (5.6), 2 to 20 wt% of inorganic powder, 20 to 60 wt% of resin binder, 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 antifoaming agent.

The raw ore powder contains calcium, sodium, potassium, magnesium, iron, aluminum, hydroxyl, fluorine, etc., and has a kinetic energy of 4 to 16 Microns Is an environmentally friendly material that emits strongly infrared rays, anions, minerals, etc. in itself and has chemical composition and physical properties according to [Table 1] below. The remaining components not listed in Table 1 correspond to other impurities.

[Table 1]

As shown in Table 1, the raw ore powder of the present invention, which has a high content of silicon dioxide (SiO ₂ ) and aluminum oxide (Al ₂ O ₃ ), may be a cause of durability depending on the particle size, ball mill to have a powder of about 2,000 to 6,000 cm < 2 > / g, preferably a powder of 4,000 to 5,000 cm < 2 > / g.

That is, the raw ore powder has a pore size ranging from 3 to 8 탆 and 0.05 to 0.2 탆, and when mixed with blast furnace slag, high molecular weight inorganic powder, powder activated carbon, etc., And the total surface area is lowered. As a result, the far-infrared rays and the anion emission effect are not so large, which is difficult to apply in the field.

Accordingly, the raw ore powder is pulverized by a ball mill (20 mm in diameter Al ₂ O ₃ ball) at 80 to 120 rpm for 3 to 4 hours so that coarse pores of more than 3 μm and fine pores of less than 0.2 μm are extinguished The inorganic powder of the present invention having such uniformly distributed pores does not cause clogging of the pores even when mixed with other components However, it has the characteristic that the emission of the far-infrared rays and the anion is maximized through the uniform pore distribution.

Particularly, when the raw ore powder in which the pores in the range of 3 to 8 탆 and 0.05 to 0.2 탆 are mainly formed is pulverized not by a ball mill but by an attritor mill or the like, the coarse pores of 3 to 8 탆 And the amount of micropores in the range of 0.05 to 0.2 mu m tends to increase, and when the number of micropores in the range of 0.05 to 0.2 mu m is large, the water adsorption power is increased, which adversely affects the entire composition However, cracking occurs after curing of the surface treatment agent.

In addition, when the raw ore powder is pulverized for more than 4 hours by a ball mill (20 mm in diameter Al ₂ O ₃ ball), there is no significant change in porosity, and when pulverizing in less than 3 hours, Thus, the effect of the raw ore powder according to the present invention is lowered.

The pulverized raw ore powder has excellent far infrared ray emissivity and antifungal property of emissivity of 0.930 and radiant energy of 3.74 x 10 ² (W / m 2, 탆, 37 캜).

In addition, the raw ore powder whose porosity is controlled by the ball mill can be activated by releasing a large amount of hydroton energy by low-temperature heat treatment. That is, although the raw ore powder has a certain amount of health tone energy emitted from itself, it is inferior in its emission amount in a natural state, so that no effect can be expected. Particularly, when mixed with other ingredients, The effect of removing harmful substances could not be expected.

However, in the present invention, a large amount of health tonnes energy is released from the raw ore powder by the multi-stage low temperature heat treatment. That is, the present invention provides a method for manufacturing a honeycomb structure, comprising: a first step of raising the temperature of a raw ore powder whose porosity is controlled by a ball mill to 100 ° C to 120 ° C and then maintaining it for 20 to 30 minutes; A second step of raising the temperature to 150 ° C to 180 ° C and then maintaining the temperature for 50 to 70 minutes after the first step; A third step of raising the temperature to 200 ° C to 250 ° C and then maintaining the temperature for 50 to 70 minutes after the second step; After the third step, cooling to 70 ° C to 100 ° C and holding for 50 to 60 minutes; After the fourth step, the pore of the raw ore powder is maintained by the fifth step of cooling to 20 ° C to 25 ° C, and the low temperature heat treatment may be used so that the health tonnage energy is released to a large extent.

As described above, the raw ore powder of the present invention is characterized by comprising a first step of heat-treating at 100 ° C to 120 ° C, a second step of heat-treating at 150 ° C to 180 ° C, a third step of heat- After the fourth step of preliminary cooling while maintaining the temperature of 70 ° C to 100 ° C after the third step, it is cooled to room temperature So that a large amount of health tonnes energy capable of removing harmful substances is generated without cracking and destruction of the pores (0.2 to 3 mu m) of the raw ore powder.

The health energy is a functional eco-friendly new material energy emitted from the raw ore powder of the present invention, and it can be called far-infrared energy, but it has other characteristics than general far-infrared energy. That is, as shown in FIG. 3, the hydroton energy is released from the raw ore powder to monomolecularize the moisture in the air to generate a hydroxysil anion (water molecule anion), and the generated hydroxysil anion (Water molecule anion) acts to reduce toxic substances such as formaldehyde contained in wood and harmful substances formed by general hydration of concrete to a harmless natural state by hydrolysis.

In addition, the raw ore powder (including raw ore powder subjected to low-temperature heat treatment) may be mixed and coated with a coating solution in which a silicone oil and water are mixed at a weight ratio of 1: 2. When such a coated ore powder (including raw ore powder subjected to a low-temperature heat treatment) is mixed, the ore powder is more uniformly dispersed in the mixture.

The raw ore powder has the function of absorbing harmful substances and decomposing heavy metals. When used as the grout composition of the present invention, the release of harmful components in the concrete is blocked, and the secondary toxic effect of the concrete is greatly reduced by adsorption neutralization in pores Respectively.

As described above, the raw ore powder according to the present invention has 40 kinds of minerals to regulate the development and physiological functions of the living body to maintain the vitality of the cells, to have a strong adsorption effect on porous structure, a mineral leaching, an ion exchange function, It has the effect of preventing and curing various diseases of living organisms, detoxifying the body, promoting growth, purifying the groundwater in the ground, removing the soil pollutants, improving the yield, and adsorbing harmful substances and heavy metals Decomposition to remove the cause of decay and maintain freshness.

The nylon fiber is added to improve the strength (compressive strength and flexural strength), to improve the tensile strength, to secure the elasticity and structural safety, and to have high ultraviolet resistance, unlike the polypropylene used as the fiber reinforcing material of the existing mortar composition, It is highly dispersed in the process and uniformly distributed to form a combined body to enhance the durability of the earthquake-resistant mortar. In addition, the nylon fiber forms a fiber net by mixing with a resin binder to perform functions such as reinforcement, crack prevention, shrinkage reduction, and seismic durability improvement.

When the nylon fiber is added in an amount of less than 0.1 part by weight, the effect thereof can not be expected. When the nylon fiber is added in an amount exceeding 5 parts by weight, the buildability is lowered due to the thickening effect. The nylon fiber is preferably added in an amount of 2 to 5 parts by weight in consideration of the improvement of seismic durability and the formation of a fiber film by bonding with a resin binder.

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.

The inorganic powder has a function of suppressing initial cracking and drying shrinkage, having a torsion rigidity, and improving the adhesion. As such inorganic powder, alumina cement or alumina cement and anhydrous gypsum can be mixed at a weight ratio of 3: 2.0-2.5, preferably alumina cement having CSA and gypsum function. The alumina cement reacts with the CSA contained therein to generate ettringite to accelerate the hardening rate of the mortar.

When the inorganic powder is added in an amount of less than 2 wt%, the coagulation time of the mortar is slowed down. When the inorganic powder is added in an amount exceeding 20 wt%, the mortar hardens hardly and the workability is lowered.

In addition, the inorganic powder may further include silica fume. The silica fume is a kind of silica fine particles made by a dry method and is a silica fine particle made by high temperature combustion of silicon tetrachloride, chlorosilane, etc. in a hydrogen and oxygen atmosphere. The silica fume has a function of dispersing in a mortar and reducing a unit quantity To increase the strength and the bending strength, to fill the gap between the pores, to realize water-tightening and high strength, to improve the chemical resistance and to prolong the durability life of the structure. Accordingly, it is preferable that the inorganic powder is added in an amount of 1 to 10 wt% in total of 100 wt% of silica fume.

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 fast-hard powder and the raw ore powder and plays a role of significantly improving the adhesive strength, flexibility, plasticity, abrasion resistance and workability when cured.

In addition, the resin binder has a function of forming a fiber film between the particles of the raw ore powder and the fast-hardening powder together with the nylon fiber to function as a crosslinking agent, thereby further preventing cracking and further improving flexibility.

The fluidizing agent, the thickener, the retarder, the accelerator, and the antifoaming agent are added to known or well-known materials used for mixing mortar or resin mortar in order to improve durability and watertightness and facilitate workability, It is 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.

The present invention can be applied to various fields such as railway structures, underground structures, roads, bridges, and the like.

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

Example 1

(Alumina cement 3wt%, silica fume 1wt%) 35wt%, nylon fiber 0.1wt%, silica sand (No. 5) 25wt%, silica sand (No. 6) 50 mm x 50 mm x 50 mm 3 specimens were prepared by blending 4 wt% of the resin binder, 9.5 wt% of the resin binder, 1 wt% of the fluidizing agent, 0.1 wt% of the thickener, 0.1 wt% of the retarder, 0.1 wt% of the accelerator, And the physical properties thereof were tested.

At that time, 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 form benzoyl peroxide) , And 2 parts by weight of a reaction catalyst (DMA). The results are shown in Table 2.

[Table 2]

Example 2

Unsaturated polyester (UPE) resin was processed into a rod having a length of 1,000 mm and a diameter of 40 mm and impregnated with the raw ore powder of 4,000 to 6,000 cm2 / g powder uniformly on the surface of the rod-shaped workpiece, And cured by passing through a heating beam to form an aramid rod.

The tensile strength of the aramid rod thus formed, the mold formed with protrusions on the surface, and the impregnated bar with silica sand impregnated therein were measured, and the results are shown in Table 3.

[Table 3]

Example 3

35 wt% niobium powder, 25 wt% nylon fiber, 25 wt% silica sand (No. 5), 25 wt% silica sand (No. 6), inorganic powder (3 wt% alumina cement, silica fume 50 wt% x 50 mm x 50 mm test specimen was prepared by blending 4 wt% of a resin binder, 9.5 wt% of a resin binder, 1 wt% of a fluidizing agent, 0.1 wt% of a thickener, 0.1 wt% of a retarder, 0.1 wt% of an accelerator, (Formaldehyde and ammonia) deodorization rates were evaluated by the test method of KICM-FIR-1085 (2010). The results are shown in Table 3.

At this time, the low temperature heat treatment of the raw ore powder was carried out by maintaining the temperature of 110 ° C to 120 ° C for 30 minutes, raising the temperature to 160 ° C to 170 ° C, maintaining the temperature for 60 minutes, increasing the temperature to 220 ° C to 230 ° C, The resultant mixture was cooled to 80 to 90 ° C and held for 60 minutes and then cooled to room temperature (20 ° C to 25 ° C) and subjected to a low-temperature heat treatment. The resin binder was prepared by polymerizing unsaturated polyester- 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) Respectively.

[Table 4]

In Table 4, specimen 1 was produced by the blend according to Example 3, specimen 2 was manufactured by blending according to Example 1, and the contrast group was prepared by the general mortar composition (without cement) will be.

As can be seen from Table 4, both the specimen 1 and the specimen 2 made of the blend according to the present invention exhibit excellent removal efficiency against harmful gas components as compared with the control group. Particularly, when the low-temperature heat- The removal efficiency of formaldehyde and ammonia was higher in the case of the sample 2.

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): Waterproof layer
(30): elastic stiffener (40): coating layer
(100): Concrete structure

Claims

A waterproof layer construction step of removing foreign matter from the surface of the concrete structure 100 and constructing the waterproof layer 20;
A stiffener installing step of installing an elastic stiffener (30) on the concrete structure (100) in which the waterproof layer (20) is installed;
And an earthquake-proofing step of forming an earthquake-resistant reinforcing layer (10) by spraying or plastering earthquake-resistant mortar mixed with a raw ore powder into a concrete structure (100) provided with an elastic stiffener (30)
The raw ore powder is pulverized by a ball mill to have a powder of 4,000 to 6,000 cm 2 / g,
A first step of raising the temperature to 100 ° C to 120 ° C and then maintaining the temperature for 20 to 30 minutes; A second step of raising the temperature to 150 ° C to 180 ° C and then maintaining the temperature for 50 to 70 minutes after the first step; A third step of raising the temperature to 200 ° C to 250 ° C and then maintaining the temperature for 50 to 70 minutes after the second step; After the third step, cooling to 70 ° C to 100 ° C and holding for 50 to 60 minutes; After the fourth step, the pore of the raw ore powder is maintained by the fifth step of cooling to 20 ° C to 25 ° C, and the low temperature heat treatment is performed so that the heastone energy is released to a large extent,
The seismic retrofitting method using the earthquake-proof mortar is characterized by comprising chemical components and physical properties according to the following [Table 1].
[Table 1]

The method of claim 1,
An elastic reinforcing material is an unsealed reinforcement method using an earthquake-resistant mortar characterized in that an unsaturated polyester (UPE) resin is processed into a pad or a rod type, and a raw ore powder is sprayed, impregnated and cured.

The method of claim 1,
The earthquake-resistant mortar comprises 20 to 50 wt% of raw ore powder, 0.1 to 5 wt% of nylon fiber, 10 to 50 wt% of silica sand (5.6), 2 to 20 wt% of inorganic powder, 20 to 60 wt% of resin binder, 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 antifoaming agent.

delete

The method of claim 1,
Wherein the raw ore powders are mixed and coated with a coating liquid in which a silicone emulsion and water are mixed at a weight ratio of 1: 2, and a seismic strengthening method using the earthquake-resistant mortar.

The method of claim 3,
Wherein the inorganic powder is alumina cement or an alumina cement and anhydrous gypsum mixed at a weight ratio of 3: 2.0 to 2.5.

The method of claim 3,
The resin binder comprises 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 in 100 parts by weight of an unsaturated polyester- Seismic strengthening method using seismic mortar.

The method of claim 9,
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).