KR102183506B1 - Plastering type trowel and concrete structure cross section reinforcement method using same - Google Patents

Abstract

The present invention relates to a vibration-type trowel for plastering, and a method for reinforcing a cross section of a concrete structure using the same. According to the present invention, the vibration-type trowel for plastering comprises: a plate having inclined surfaces at both ends thereof; a clamp having a built-in coil spring therein; a handle; a vibration unit fixed to and installed at a lateral surface of the clamp; and an air hose. According to the present invention, the adhesion of mortar can be increased.

Description

Plastering type trowel and concrete structure cross section reinforcement method using same}

The present invention relates to a vibrating trowel for plastering and a concrete structure section reinforcement method using the same, and in particular, a vibrating trowel for plastering that repairs and reinforces deteriorated parts of a concrete structure by applying and using the compaction function for both plastering and using the same. It relates to a concrete structure section reinforcement method.

In general, damage to concrete structures such as bridges, retaining walls, water and sewage facilities, waterways, protective walls, and curbs occurs due to causes such as deterioration, corrosion due to insufficient rebar cover thickness, expansion, freezing, melting, and salt damage in winter and summer.

In order to solve this problem, after regular inspection, precision inspection, and precise safety diagnosis for concrete structures are carried out, repair and reinforcement work are performed by repair and reinforcement design.

As a construction method widely used for repairing and reinforcing such concrete structures, Patent No. 10-1811641, a concrete structure section restoration agent, and a concrete structure surface repair and section restoration method using the same have been proposed.

First, the surface repair method includes removing deteriorated concrete surfaces, high-pressure cleaning of the concrete surface, applying concrete reinforcing agents to deteriorated areas of high-pressure-washed concrete structures, and applying a primer coating to the surface of the concrete reinforcing agents. Done.

The section restoration method includes the steps of chipping the deteriorated portion of the concrete structure, removing rust of the reinforcing bar of the deteriorated portion, high-pressure washing of the rust removing portion of the reinforcing bar, and applying a concrete reinforcing agent to the deteriorated portion of the high-pressure washed concrete structure. The steps consist of: applying a primer coating to the surface of the concrete reinforcing agent, applying a surface restoration agent to the surface of the primer coating agent, and applying a primer coating agent to the surface of the surface restoration agent.

In the conventional surface repair and section restoration method as described above, for section restoration, a concrete structure is chipped, and a mortar for section restoration is applied to the chipping surface with a trowel by manpower, and at the same time, compaction is performed and then finished.

In this case, it is difficult to push or attach the mortar to the chipping surface with a trowel because there are many irregular parts such as recesses and protrusions on the concrete chipping surface.

That is, the plastering work is performed only on the outside, resulting in defects such as lifting, breakage, dropping, and cracking of the plastering surface.

For this reason, there was a problem in that it was difficult to secure economic loss and workability and quality due to maintenance cost.

Registered Patent No. 10-1811641 (2017.12.18.)

Thus, the present invention was conceived to solve the above-described problems, and using a trowel equipped with a compaction function for plastering, a vibrating trowel for plastering to secure the adhesion of mortar to the aging portion of the concrete structure, and the same Its purpose is to provide a concrete structure section reinforcement method used.

The vibrating trowel for plastering according to the present invention for achieving the above object comprises: a plate whose front end is formed in a conical shape, the rear end is formed in a square shape, and has an inclined surface inclined upward at both ends; A fixture fixedly installed in the center of the plate and having a coil spring embedded therein; A handle attached to the upper surface of the fixture in a longitudinal direction and formed of a steel bar, and a groove formed on the lower surface of the steel bar; A vibration unit fixedly installed on the side of the fixture; An air hose penetrating the inside of the handle and having one end connected to the vibration unit and the other end connected to the air compressor, and an air delivery unit for receiving compressed air supplied from the air compressor and the air hose at one side of the vibration unit It is installed, characterized in that an air control valve is installed on one side of the vibration unit to control the vibration by limiting the amount of air supplied to the vibration unit.

In addition, the concrete structure section reinforcement method using the vibrating trowel for plastering according to the present invention for achieving the above object is a chipping step (S100) of chipping the deteriorated part of the concrete structure; A washing step (S200) of washing the area chipped in the chipping step at high pressure; A laying step (S300) of laying reinforcement mortar on the area washed in the washing step; Arrangement step (S400) of arranging a vibrating trowel for plastering in a portion where the reinforcing mortar is installed; A vibration generating step (S500) of generating vibration through the vibration unit of the vibrating trowel for plastering; Vibration compaction step (S600) of controlling the vibration generated in the vibration generating step through an air control valve, and vibrating the part where the reinforcing mortar is laid with the vibration controlled through the air control valve with a vibrating trowel for plastering; It characterized in that it consists of a finishing step (S700) of applying a primer and a protective agent to the vibration compaction and plastered upper surface.

As described above, the vibrating trowel for plastering according to the present invention and the concrete structure section reinforcing method using the same have the following effects.

First, the present invention can prevent the occurrence of lifting, breakage, dropping, and cracking of the plastered surface by making the density of the mortar the same through vibration compaction and plastering, so that high-quality construction can be performed, and the efficiency of work can be achieved. .

Second, the present invention can increase the packing density inside the mortar by reducing the pores and moisture of the mortar filled in the deteriorated part of the concrete structure, as well as increase the adhesion and compressive strength of the mortar.

Third, the present invention has the effect of securing the adhesion area and adhesion of the mortar to the depressions and voids of the chipping surface through the vibrating plastering during the filling and plastering of the mortar after chipping and high-pressure cleaning of the old part of the concrete structure. .

Fourth, the present invention combines microsynthetic rubber suspension (SB Latex) with ultra-fast hardness cement and mixes with a resin composition to improve heat-shielding latex-modified ultra-fast-hard concrete with improved physical properties such as watertightness, durability, adhesion, and heat shielding properties. By applying it to a concrete structure, it has excellent waterproofing and durability (more than 25 years), the active load resistance moment is increased due to the increase in the effective height of the slab section, and it has excellent mechanical properties such as adhesion and flexural strength. It is excellent in reducing temperature and energy, has excellent compressive, tensile, and flexural strength, excellent in chemical resistance, abrasion resistance, salt damage and winter damage, and low maintenance cost.

Fifth, the present invention has the effect of reflecting more than near infrared rays (wavelength 700 nm) with respect to the solar radiation wavelength of 290 nm to 3,000 nm on the bridge surface by applying the heat shielding paint.

Sixth, the present invention has a high strength (35 MPa) and a mitigating effect against external impact by coating the surface with a lylium silicate series.

Seventh, the present invention can reduce the concrete pavement temperature of the bridge surface by 7°C-10°C in the case of an air temperature of 30°C by applying the heat shielding paint.

Eighth, the present invention is a UM resin mortar, which is a water-soluble MMA resin having elasticity and uses an eco-friendly resin and heat shielding paint, so it is excellent in temperature reduction and energy saving of concrete structures, excellent in compression, tensile, and flexural strength, and chemical resistance and abrasion resistance. It is excellent as a non-reactive flame-retardant resin in salt and east seas, and has a semi-permanent life and low maintenance cost.

1 is a side view showing a vibrating trowel for plastering according to the present invention,
Figure 2 is a plan view showing a vibrating trowel for plastering according to the present invention,
Figure 3 is a rear view showing a vibrating trowel for plastering according to the present invention,
Figure 4 is a side view showing a first embodiment of the vibrating trowel for plastering according to the present invention,
5 is a rear view showing a first embodiment of a vibrating trowel for plastering according to the present invention,
6 is a process diagram showing a process of restoring a cross section of a concrete structure using a vibrating trowel for plastering according to the present invention.

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

[Basic example]

1 is a side view showing a vibrating trowel for plastering according to the present invention, Figure 2 is a plan view showing a vibrating trowel for plastering according to the present invention, Figure 3 is a rear view showing the vibrating trowel for plastering according to the present invention to be.

As shown in these drawings, the plastering-type vibrating trowel 1 according to the present invention is generally formed in a conical shape at the front end, a rectangular shape at the rear end, and a plate with inclined surfaces 11 inclined upwardly at both ends ( 10); Fixture 20 which is fixedly installed vertically in the center of the plate 10 and has a coil spring 21 built therein; A handle 30 attached to the upper surface of the fastener 20 in the longitudinal direction and made of a steel bar; A vibration unit 40 fixedly installed on the side of the fixture 20; It is composed of an air hose 50 that penetrates through the inside of the handle 30 and has one end connected to the vibrating unit 40 and the other end connected to the air compressor, and one side of the vibrating unit 40 has an air compressor and air. An air delivery unit 41 for receiving compressed air supplied from the hose 50 is installed, and air conditioning that controls the vibration by limiting the amount of air supplied to the vibration unit 40 at one side of the vibration unit 40 Valve 42 is installed.

That is, the plastering type vibration trowel 1 according to the present invention is a device formed by organically combining the plate 10, the fixture 20, the handle 30, the vibration unit 40, and the air hose 50.

Here, the plate 10 is a steel plate having a semicircular or conical shape at the front end, a quadrangle shape at the rear end, and a smooth surface at the bottom.

Meanwhile, inclined surfaces 11 are formed at both ends of the plate 10 so as to be inclined upward at a predetermined angle.

This inclined surface 11 functions to prevent the reinforcing mortar from rising from both ends, that is, the sides of the plate 10, and at the same time, the compacted portion is stamped by one end of the plate 10 to prevent a groove. Perform.

Therefore, as the inclined surface 11 is formed on the plate 10, not only does the reinforcing mortar rise to the side of the plate 10, but also one or both ends of the plate 10 will be stamped on the reinforcing mortar during plastering work. As this disappears, reinforcement mortar plastering work can be performed smoothly and efficiently.

In addition, the fixture 20 is fixedly installed vertically at the center of the plate 10, and performs a function of supporting the handle 30.

The fixture 20 feels a feeling of fatigue due to the vibration generated by the vibration unit 40 when the operator uses the handle 30, so the coil spring 21 is provided inside the fixture 20, It performs a function of absorbing the vibration generated by the vibration unit 40.

In addition, the handle 30 is attached to the upper surface of the fixture 20 in the longitudinal direction, and is made of a steel bar to stably grip the operator and improve the grip, and the lower surface of the handle 30 corresponds to the operator's finger. The groove is formed in the part to improve the grip of the operator.

In addition, a flexible cover of any one of cloth, rubber, and synthetic fibers may be installed on the handle 30 to improve the operator's grip.

In addition, the vibration unit 40 is installed on the upper surface of the side plate 10 of the fixture 20, and performs a function of generating vibration.

The vibrating unit 40 may have a configuration in which the end of the rod shaft moves forward and backward at high speed when compressed air is supplied, such as an air vibrator.

In particular, the vibration unit 40 receives compressed air generated from an air compressor (not shown) through the air hose 50 and generates vibration through vertical shaking.

To this end, an air delivery unit 41 for receiving compressed air supplied from an air compressor and an air hose 50 is installed at one side of the vibration unit 40.

Here, the air delivery part 41 is connected to one end of the air hose 50.

The vibrating unit 40 as described above vibrates the plate 10 by shaking up and down as the end of the rod shaft provided therein moves forward and backward through the compressed air supplied through the air compressor and the air hose 50. , The vibrating trowel (1) for plastering can be vibrated to increase adhesion and compressive strength by reducing voids and moisture inside the cross section of the reinforced mortar and increasing the filling density.

In addition, an air control valve 42 is installed at one side of the vibrating unit 40, and the vibration is controlled by limiting the amount of air supplied to the vibrating unit 40, and the magnitude of the vibration is adjusted according to the amount of air supplied. Is to do.

That is, the air control valve 42 preferably has a structure connected to the air delivery unit 41 in order to control the compressed air supplied from the air compressor to the vibrating unit 40 by manually adjusting the operator.

Such an air control valve 42 can adjust the pressure of air.

Compressed air supplied from the air compressor to the vibrating unit 40 can be controlled.

In this way, by providing the air control valve 42 that can control the vibration, it is possible to reduce fatigue on the wrist of the operator.

In addition, since the plastering operation is performed in response to different plastering operation situations by adjusting the intensity of vibration by adjusting the amount of air supplied, the efficiency of the operation can be increased.

On the other hand, the air hose 50 penetrates the inside of the handle 30 and has one end connected to the air delivery part 41 installed on one side of the vibrating part 40, the other end connected to the air compressor, and the air compressor It performs a function of supplying the air generated in the vibrating unit 40.

At this time, it is preferable that the handle 30 has a through hole formed therein in the longitudinal direction so that the air hose 50 can penetrate the inside.

At this time, the through hole is formed in a shape corresponding to the outer diameter of the air hose 50.

Accordingly, the air hose 50 passes through the through hole, and both ends are connected to the air delivery unit 41 and the air compressor, respectively.

The vibrating trowel 1 for plastering according to the present invention having the configuration as described above can secure the adhesion area and adhesion of the reinforced mortar by filling the recesses and voids of the chipping surface of the concrete structure with reinforcing mortar through vibration compaction. have.

In addition, by reducing the voids and moisture inside the cross-section of the reinforcing mortar through vibration compaction, it is possible to increase the filling density inside the reinforcing mortar, thereby increasing the adhesion and compressive strength of the reinforcing mortar.

In addition, the vibrating trowel 1 for plastering according to the present invention having the configuration as described above can perform high-quality construction by preventing the occurrence of lifting, breakage, dropping, and cracking of the plastering surface through vibration compaction. There is an effect that can maximize the efficiency of sex.

[Example]

Figure 4 is a side view showing a first embodiment of the vibrating trowel for plastering according to the present invention, Figure 5 is a rear view showing a first embodiment of the vibrating trowel for plastering according to the present invention.

As shown in these drawings, the vibrating trowel 2 for plastering according to the present invention includes a plate-shaped plate 10 having a predetermined shape; A housing (H) that is fixedly installed vertically on the central portion of the plate (10); A handle 30 attached to the upper surface of the housing H in the longitudinal direction and formed of a steel bar, and having a groove on the bottom surface of the steel bar; A vibration unit 40 fixedly installed in the housing H; It is composed of an air hose 50 that penetrates the inside of the handle 30 and has one end connected to the vibrating unit 40 and the other end connected to the air compressor.

That is, the vibrating trowel 2 for plastering according to the present invention is a device formed by organically combining the plate 10, the housing H, the handle 30, the vibrating unit 40, and the air hose 50.

Here, the plate 10 is a steel plate having a semicircular or conical shape at the front end, a quadrangle shape at the rear end, and a smooth surface at the bottom.

Meanwhile, inclined surfaces 11 are formed at both ends of the plate 10 so as to be inclined upward at a predetermined angle.

This inclined surface 11 functions to prevent reinforcing mortar from rising to both ends, that is, to the side, of the plate 10, and at the same time, a function to prevent the case where the compacted portion is stamped by one end of the plate 10 and a groove occurs. Perform.

Therefore, as the inclined surface 11 is formed on the plate 10, not only does the reinforcing mortar rise to the side of the plate 10, but also one or both ends of the plate 10 will be stamped on the reinforcing mortar during plastering work. As this disappears, reinforcement mortar plastering work can be performed smoothly and efficiently.

In addition, the housing H has a size capable of accommodating the vibrating unit 40, and is installed in the center of the plate 10 to prevent the vibration of the vibrating unit 40 from being eccentric to the front.

In addition, the handle 30 is fixedly installed on the upper surface of the housing H by welding in the longitudinal direction.

At this time, the handle 30 is a steel bar, and the housing H corresponding thereto is preferably formed in a curved shape.

Meanwhile, the vibration unit 40 is installed inside the housing H and performs a function of generating vibration.

The vibrating unit 40 has a configuration in which the end of the rod shaft moves forward and backward at high speed when compressed air is supplied like an air vibrator.

In particular, the vibration unit 40 receives compressed air generated from an air compressor (not shown) through the air hose 50 and generates vibration through vertical shaking.

To this end, an air delivery unit 41 for receiving compressed air supplied from an air compressor and an air hose 50 is installed at one side of the vibration unit 40.

Here, the air delivery part 41 is connected to one end of the air hose 50.

The vibrating unit 40 as described above vibrates the plate 10 by shaking up and down as the end of the rod shaft provided therein moves forward and backward through the compressed air supplied through the air compressor and the air hose 50. , The vibrating trowel 1 for plastering can be vibrated to increase adhesion and compressive strength by reducing voids and moisture inside the cross section of the reinforced mortar and increasing the filling density.

In addition, an air control valve 42 is installed at one side of the vibrating unit 40, and the vibration is controlled by limiting the amount of air supplied to the vibrating unit 40, and the magnitude of the vibration is adjusted according to the amount of air supplied. Is to do.

That is, the air control valve 42 preferably has a structure connected to the air delivery unit 41 in order to control the compressed air supplied from the air compressor to the vibrating unit 40 by manually adjusting the operator.

The air control valve 42 is a valve capable of adjusting the pressure of air.

Here, it is possible to control the compressed air supplied from the air compressor to the vibrating unit 40.

In this way, by providing the air control valve 42 that can control the vibration, it is possible to reduce fatigue on the wrist of the operator.

In addition, since the plastering operation is performed in response to different plastering operation situations by adjusting the intensity of vibration by adjusting the amount of air supplied, the efficiency of the operation can be increased.

Meanwhile, the air hose 50 passes through the inner side of the handle 30 and the upper surface of the housing H, and is connected to the air delivery unit 41 provided at one side of the vibration unit 40.

To this end, it is preferable that a hole is formed between the upper surface of the housing H and the inner side of the handle 30 to be connected to each other.

By using the vibrating trowel 2 for plastering according to the present invention having the configuration as described above, it is possible to perform uniform vibration compaction in a state that prevents the vibration of the vibrating unit 40 from being eccentric to the front. There is an effect that can secure the quality of.

Hereinafter, a reinforcing section of a concrete structure using a vibrating trowel for plastering according to the present invention having the configuration as described above will be described.

6 is a process chart showing a process of restoring a cross section of a concrete structure using a vibrating trowel for plastering according to the present invention.

As shown in this figure, the concrete section reinforcement method using a vibrating trowel for plastering according to the present invention includes a chipping step (S100) of chipping a deteriorated part of a concrete structure; A washing step (S200) of washing the area chipped in the chipping step at high pressure; A laying step (S300) of laying reinforcement mortar on the area washed in the washing step; Arrangement step (S400) of arranging vibration-type trowels (1, 2) for plastering in the part where the reinforcing mortar is installed; A vibration generating step (S500) of generating vibration through the vibration unit 40 of the vibrating trowel for plastering (1, 2); The vibration generated in the vibration generating step is controlled through the air control valve 42, and the part where the reinforcing mortar is installed is vibrated with the vibration-type trowel (1, 2) for plastering by the vibration controlled through the air control valve (42). Vibration compaction step of compaction (S600); It consists of a finishing step (S700) of applying a primer and a protective agent to the vibration compaction and plastered upper surface.

That is, the concrete section reinforcement method using a vibrating trowel for plastering according to the present invention is a chipping step (S100), a washing step (S200), a laying step (S300), a placement step (S400), a vibration generating step (S500), and a vibration compaction. It consists of a step (S600) and a closing step (S700).

Here, in the chipping step (S100), the deteriorated concrete structure is chipped.

Chipping refers to removing unnecessary parts by cutting the surface of objects such as metal and concrete.

In order to minimize the impact on the concrete structure when chipping the deteriorated part of the concrete structure, in the present invention, it is preferable to use a pneumatic hammer rather than a hydraulic hammer.

Subsequently, in the washing step (S200), the chipped portion is washed at high pressure through a hot and cold water high pressure washer.

In other words, it removes foreign substances present in the chipped area.

Subsequently, in the laying step (S300), a reinforcing mortar is laid on the deteriorated portion of the concrete structure washed in the washing step (S200).

Here, the reinforcing mortar is 87-94% by weight of fast-setting cement, 0.05-0.2% by weight of fiber, active silica, zinc stearate, EVA (Ethylene-Vinyl Acetate Copolymer) re-emulsifying powder resin and water reducing agent. 13.5 to 22% by weight of a fast-setting cement mixture consisting of 4.5 to 12% by weight of a waterproofing agent and 0.45 to 1.8% by weight of a fluidizing agent; 67-79% by weight of aggregate; 0.045 to 0.096% by weight of retardant; 0.005 to 0.014% by weight of AE admixture; SB-latex (Styene Butadiene Latex) 55 to 84% by weight, styrene-acryl emulsion (Styrene-acryl Emulsion) 14.7 to 44.6% by weight, antifoaming agent 0.1 to 0.5% by weight, a latex binder consisting of 0.2 to 0.9% by weight wetting agent 3.5 to 6.5% by weight; Urethane acrylate (urethane acrylate) 10% by weight, butyl acrylate (butyl acrylate) 10% by weight, lithium silicate (Li2O3Si) 3% by weight, polymethyl methacrylate (polymethyl methacrylate) 60% by weight, 2-hydroxy ethyl meth It is composed of 2.95 to 5.39% by weight of a resin composition consisting of 15% by weight of acrylate (hydroxyl ethyl methacrylate) and 2% by weight of sodium silicate (Na2SiO3·nH2O).

That is, the reinforcing mortar according to the present invention is 13.5 to 22% by weight of fast-setting cement mixture, 67 to 79% by weight of aggregate, 0.045 to 0.096% by weight of retardant, 0.005 to 0.014% by weight of AE admixture, 35 to 65% by weight of latex binder, It is composed of 2.95 to 5.39% by weight of the resin composition.

Here, the fast-setting cement mixture is composed of 87 to 94% by weight of fast-setting cement, 0.05 to 0.2% by weight of fiber, 45 to 12% by weight of a waterproofing agent, and 0.45 to 18% by weight of a fluidizing agent.

In particular, the fast-setting cement is a mixed cement or alumina cement, which is an ultra-fast-diameter cement, or a special cement or fast-setting cement-based composition such as an Arwin-based calcium sulfur aluminate cement, in order to shorten the initial strength and hardening time, or at least one selected from these As a cement mixture containing natural anhydrite, slaked lime, or magnesia in a certain ratio for imparting reactivity with the mixed fast-setting cement, it is preferably composed of 87 to 94% by weight based on the fast-setting cement mixture.

In addition, the fiber is a polyvinyl alcohol (PVA)-based fiber, and a specific gravity of 126g/cm3, a diameter of 11㎛, a tensile strength of 9000kgf/cm2, and a length of 5mm.

Fibers are very resistant to carbon-containing solvents, oils, salts, and alkalis, and have excellent resistance to direct sunlight.

In particular, the PVA-based fiber has a hydrophilic structure having a hydroxyl group on its surface, which is easy to disperse, has a high modulus of elasticity, and has a high adhesion performance in a cured body of an ultra-fast-hardening polymer concrete composition.

Here, the fiber is a PVA-based fiber having a relatively small diameter, it suppresses and stabilizes the crack of the concrete structure, increases the mechanical properties through the crosslinking action of the fiber, and suppresses the crack caused by fatigue and impact load. have.

In addition, the fiber is not exposed to the surface, so the finish is very good.

At this time, the fiber is preferably composed of 0.05 to 0.2% by weight based on the fast-setting cement mixture.

In addition, the waterproofing agent is a component contained to improve the water permeability resistance that may decrease as the content of the polymer in the concrete structure decreases, such as active silica, zinc stearate, ethylene vinyl acetate copolymer (EVA ; Ethylene-Vinyl Acetate Copolymer) Re-emulsifiable powder resin and water reducing agent.

In particular, the waterproofing agent is composed of an inorganic, organic waterproofing agent, or an organic/inorganic mixed waterproofing agent, and the inorganic waterproofing agent in the waterproofing agent reacts with the hydrate of cement to produce insoluble calcium silicate hydrate, and the generated calcium silicate hydrate further forms the concrete structure. It is formed densely and suppresses the penetration of moisture.

In addition, if the supply of moisture is maintained during the occurrence of cracks in the concrete structure, it reacts with the unhydrated material of the concrete structure to inhibit the growth of cracks, and also exhibits self-healing performance in which growth crystals are formed in the cracks.

On the other hand, the organic waterproofing agent in the waterproofing agent maintains the airtightness of the concrete structure due to the formation of a polymer film film during the hydration reaction of the cement. It improves the water permeability resistance of the structure.

In addition, it is possible to obtain the effect of improving the strength of the concrete structure by watertightness.

At this time, the waterproofing agent is preferably composed of 45 to 12% by weight based on the fast-setting cement mixture.

In addition, the fluidizing agent improves the strength of the concrete structure due to the reduction effect of the mixed water quantity, and Naphthalene-based, melamine-based, polycarboxyl which can obtain an effect with only a small amount for the flatness and gradient of the concrete structure. At least one water reducing agent or fluidizing agent such as polycarboxylate is mixed and used.

That is, one of a water reducing agent or a fluidizing agent such as naphthalene-based, melamine-based, polycarboxylic acid-based, and the like may be selected and used alone, or two or more may be mixed and used.

At this time, the fluidizing agent is preferably composed of 0.45 to 18% by weight based on the fast-setting cement mixture.

On the other hand, the aggregate is used as a fine aggregate and a coarse aggregate, and the fine aggregate is an aggregate having a particle size of 10 mesh or less and 200 mesh or more, and the coarse aggregate is an aggregate such as gravel and crushed stone having a size of 85% or more by weight of # 5 mm, 67 to 79% by weight is used for heat-shielding latex-modified ultra-fast-hard concrete.

In addition, the retarder is a material that has a function of suppressing the generation of cement hydrates and thus allows the curing time of the concrete structure to be freely controlled, and is preferably composed of 0.045 to 0.096% by weight of the heat-shielding latex-modified ultrafast-hard concrete.

Here, the retarder may be tartaric acid, gluconic acid, citric acid, oxycarboxylic acid-based compound, or saccharide, or a mixture of at least one selected from these.

In addition, the AE admixture is a material that uniformly distributes countless fine bubbles in a concrete structure, and is used to improve workability of the concrete structure and resistance to freezing and thawing.

In particular, the AE admixture is an anionic type that has a charge of a group anion that dissociates in water to exhibit surface activity, and a resin soap, lactic acid ester and sulfide type AE admixture, a cationic AE admixture in which the active group in the aqueous solution is charged as a cation, and alkali As an anionic surfactant for acid, an amphoteric AE admixture that acts as a cationic surfactant for acid, a hydroxyl group AE admixture that does not dissociate into ions in an aqueous solution, an ether-based AE admixture that has ethylene oxide as a hydrophilic group, and esters. One of the nonionic AE admixtures in the system may be used.

Here, the appropriate amount of air bubbles of the AE admixture is determined by the durability of the concrete and the maximum size of the aggregate, but the range of 3 to 6% is efficient, so an anionic AE admixture as an AE admixture is 0.005 for heat-shielding latex-modified ultra-fast-hard concrete. It is preferably composed of ~0.014% by weight.

On the other hand, the latex binder is SB-latex (Styene Butadiene Latex) 55 to 84% by weight, styrene-acryl emulsion (Styrene-acryl Emulsion) 14.7 to 44.6% by weight, antifoaming agent 0.1 to 0.5% by weight, wetting agent 0.2 to 0.9% by weight It is preferably composed of.

Here, the SB-latex (Styrene Butadiene Latex) is an emulsion resin composed of a polymer copolymer composed of styrene-butadiene as a main monomer, and is preferably composed of 55 to 84% by weight based on the latex binder.

At this time, the SB-latex emulsion resin is preferably composed of 48% solid content.

The styrene-acryl emulsion is a material that acts as a modifier in the latex binder, and is composed of 14.7 to 44.6% by weight based on the latex binder according to required physical properties.

At this time, it is preferable that the styrene-acrylic emulsion has a solid content of 58±2% and a minimum film forming temperature (MFFT) of 0 or less.

Therefore, by modifying the latex binder by adding a styrene-acrylic emulsion, an effect of enhancing adhesion can be obtained.

On the other hand, the antifoaming agent is a mineral oil-based antifoaming agent included to suppress air bubbles that may occur when the latex binder is mixed with the fast-setting cement mixture, and is preferably composed of 0.1 to 0.5% by weight based on the latex binder. Do.

At this time, the antifoaming agent may reduce the content or increase the antifoaming function by using a mixture of two kinds of antifoaming agents of different mineral oil-based components than using one kind of antifoaming agent having the same mineral oil-based component.

In addition, the wetting agent is a surfactant for uniformly mixing the fast-setting cement mixture and aggregate, and the low-viscosity wetting agent is preferably composed of 0.2 to 0.9% by weight based on the latex binder.

On the other hand, the resin composition is preferably composed of 2.95 to 5.39% by weight with respect to the heat-shielding latex-modified ultrafast diameter concrete.

Here, the resin composition is urethane acrylate (urethane acrylate) 10% by weight, butyl acrylate (butyl acrylate) 10% by weight, lithium silicate (Li2O3Si) 3% by weight, polymethyl methacrylate (polymethyl methacrylate) 60% by weight, It consists of 15% by weight of 2-hydroxyl ethyl methacrylate and 2% by weight of sodium silicate (Na2SiO3·nH2O).

That is, the resin composition is composed of urethane acrylate, butyl acrylate, lithium silicate, polymethyl methacrylate, 2-hydroxy ethyl methacrylate, and sodium silicate.

Here, the urethane acrylate is a hybrid resin having both urethane and acrylate properties.

Such urethane acrylate is generally prepared by polymerization of a urethane prepolymer and a hydroxyalkyl acrylate.

Urethane prepolymers are formed by polymerization of polyols and isocyanates, and there are various types.

In addition, examples of the hydroxy alkyl acrylate include methyl methacrylate, 2-hydroxyethylmethacrylate, and n-butyl acrylate.

Here, in the preparation of the above-described urethane acrylate, about 20 parts by weight of adipic acid and about 25 parts by weight of isocyanate were thermally polymerized in a reactor to prepare a urethane prepolymer.

Here, about 30 parts by weight of methyl methacrylate, about 25 parts by weight of 2-hydroxyl ethyl methacrylate, and about 0.3 parts by weight of alcohol were added thereto, followed by thermal polymerization to obtain urethane acrylate. To manufacture.

In addition, the polymethyl methacrylate is mixed with urethane acrylate to improve the strength of a structure made of a resin.

And, the 2-hydroxyl ethyl methacrylate (2-hydroxyl ethyl methacrylate) in addition to the urethane acrylate and polymethyl methacrylate resin in the present invention, as a resin for reinforcing the strength of concrete, hydroxy ethyl methacrylate (hydroxyl ethyl methacrylate) ethyl methacrylateA) can additionally be used.

Meanwhile, 10 parts by weight of a heat shielding paint is added and mixed with respect to 100 parts by weight of the resin composition.

Here, the heat shielding paint is 40 to 64% by weight of methyl methacrylate resin, 20 to 24% by weight of butyl acrylate resin, 1 to 3% by weight of noniphenol, and superplasticizer Based on 100 parts by weight of the main material resin composition consisting of 1 to 3% by weight and 14 to 30% by weight of additives, 25 to 30% by weight of a methyl methacrylate resin; 25 to 30% by weight of a polypropylene glycol acrylate resin; 5 to 10% by weight of butyl acrylate resin; 4 to 5% by weight of polyoxypropylene glycerol triether; Lithium silicate 01 to 1% by weight; 1 to 2% by weight of surfactant; 1 to 2% by weight of a polycarboxylic acid fluidizing agent; It is composed by mixing 100 parts by weight of the subsidiary resin composition consisting of 30 to 38% by weight of water.

Here, the heat shielding paint is 40 to 64% by weight of methyl methacrylate resin, 20 to 24% by weight of butyl acrylate resin, 1 to 3% by weight of noniphenol, and superplasticizer Based on 100 parts by weight of the main material resin composition consisting of 1 to 3% by weight and 14 to 30% by weight of additives, 25 to 30% by weight of a methyl methacrylate resin; 25 to 30% by weight of a polypropylene glycol acrylate resin; 5 to 10% by weight of butyl acrylate resin; 4 to 5% by weight of polyoxypropylene glycerol triether; 0.1 to 1% by weight of lithium silicate; 1 to 2% by weight of surfactant; 1 to 2% by weight of a polycarboxylic acid fluidizing agent; It is composed by mixing 100 parts by weight of the subsidiary resin composition consisting of 30 to 38% by weight of water.

That is, the heat shielding paint is composed of a main material resin composition and a sub material resin composition.

Here, the main material resin composition is 40 to 64% by weight of methyl methacrylate resin, 20 to 24% by weight of butyl acrylate resin, 1 to 3% by weight of noniphenol, and high flow rate It consists of 1 to 3% by weight and 14 to 30% by weight of additives.

That is, the main material resin composition is composed of a methyl methacrylate resin, a butyl acrylate resin, a noniphenol, a superplasticizer, and an additive.

Here, the methyl methacrylate resin is an ester of methylacrylic acid, and the methyl ester is important.

Methyl methacrylate makes methacrylic acid amide from isetongyanhydrin, and is converted from methyl alcohol to ester.

Other esters are either synthesized together or obtained by transesterification from methyl methacrylate.

The methyl methacrylate resin is preferably 40 to 64% by weight based on 100% by weight of the coating composition.

In addition, the butyl acrylate resin is an ester of acrylic acid and butyl alcohol, and if it is not a polymer, it is called a monomer, and when they are polymerized to form a polymer, they become acrylic resins such as paints and adhesives.

Here, the butyl acrylate resin is used for the synthesis of a polymer having a softer property than methyl acrylate, and ethyl and nuclear seals are also used.

The butyl acrylate (Buthyl Acrylate) resin is preferably 20 to 24% by weight based on 100% by weight of the coating composition.

In addition, the surface active agent is made of EOA (ethylene oxide abduct) produced by reacting ethylene oxide with nonyl phenol as a raw material, and is widely used for dyeing and processing textile fabrics.

Here, the surfactant is preferably 1 to 3% by weight based on 100% by weight of the coating composition.

In addition, the superfluidizing agent includes naphthalene-based, melamine-based, lignin-based, and carboxyl-based.

Here, the naphthalene and carboxyl-based are preferably 1 to 3% by weight based on 100% by weight of the coating composition.

Meanwhile, the additive is composed of aluminum oxide (Al2O3).

The ceramic is manufactured by separating the ceramic from bauxite using a Bayer process.

In particular, the ceramic has an excellent strength and a Knoop hardness of 1,950.

In addition, the ceramic uses a segregation ceramic rather than a diameter in order to increase slip resistance.

The ceramic blocks thermal energy conduction by absorbing and dissipating thermal energy.

In addition, the subsidiary material resin composition is 25 to 30% by weight of a methyl methacrylate resin; 25 to 30% by weight of a polypropylene glycol acrylate resin; 5 to 10% by weight of butyl acrylate resin; 4 to 5% by weight of polyoxypropylene glycerol triether; Lithium silicate 01 to 1% by weight; 1 to 2% by weight of surfactant; 1 to 2% by weight of a polycarboxylic acid-based fluidizing agent; It consists of 30-38% by weight of water.

That is, the sub-material resin composition is composed of methyl methacrylate resin, polypropylene glycol acrylate resin, butyl acrylate resin, polyoxypropylene glycerol triether, lithium silicate, surfactant, polycarboxylic acid-based fluidizing agent, and water.

Here, the methyl methacrylate resin is used to impart ductility and improve viscoelasticity.

It is preferable that the content of the methyl methacrylate resin is 25 to 30% by weight.

If the content of the methyl methacrylate resin exceeds 30% by weight, ductility and viscoelasticity are improved, but the viscosity is lowered, resulting in poor workability and price competitiveness.If the content of the methyl methacrylate is less than 25% by weight, ductility and viscoelasticity The improvement effect may be weak.

In addition, the polypropylene glycol acrylate resin is a kind of organic solvent, and it is preferable to use 25 to 30% by weight in order to reduce the content of the solvent while sufficiently improving the polymerizability of the monomeric part.

And, the reason for limiting the content of butyl acrylate to 5-10% by weight is to ensure stable tensile strength of concrete.In the case of conventional concrete, the strength is 18 MPa after 28 days of age after concrete paving. It can be seen that the concrete made of the water-soluble resin of the present invention is 4608 MPa after 1 day, 5214 MPa after 2 days, and 5788 MPa after 3 days.

In addition, the polyoxypropylene glycerol triether has strong dispersing and emulsifying power and excellent interfacial adsorption, so that the polyurethane raw material can be easily mixed.

The polyoxyflophyllene glycerol triether is preferably 4 to 5% by weight, and when the polyoxyflophyllene glycerol triether is less than 4% by weight, it may be difficult to mix in a water-soluble resin due to its low viscosity. When the oxyflophyllene glycerol triether is greater than 5%, a large amount of air bubbles in the water-soluble resin may occur.

In addition, the lithium silicate may penetrate into the concrete structure and react with calcium hydroxide to form an insoluble calcium silicate hydrate.

Lithium silicate makes the structure of concrete more robust and has the effect of improving the durability of concrete structures.

Here, the lithium silicate is preferably 0.1 to 1% by weight.

In addition, the reason why the content of the surfactant is limited to 1 to 2% by weight is to accelerate the hardening of concrete.

Here, as the surfactant, ethoxylated nonylphenyl is typical.

In addition, the polycarboxylic acid-based fluidizing agent secures fluidity for more than 120 minutes, applies to high strength, high-flow concrete, solves slump flow loss, maintains a viscous slump in concrete, can be freely controlled, provides high water-reducing power in proportion to the amount used, workability and water tightness , Excellent finish, secured stable compressive strength, excellent workability and bleeding suppression effect when using relatively good cleaning yarn, mesh, and river yarn, improved workability and increased resistance to freezing and thawing through stable air bubble entrainment, 1~2 as eco-friendly materials It is preferable to set it as weight%.

In particular, it is preferable to use polyethylene glycol sulfonic acid ether or polyethylene glycol methacrylic acid as the polycarboxylic acid-based fluidizing agent.

In particular, the polycarboxylic acid-based fluidizing agent is used for high-density concrete, self-filling concrete, large high-rise structures, and 60n/㎟ high-strength high-flow concrete.

In principle, fresh water is used for water, and 40 to 45% by weight is preferable.

In addition, the above-described heat shielding paint can obtain the following test results.

Sample name: Thermal insulation paint

Test Items unit Sample classification Result Implementation method General reflectance (30nm∼780nm) % - 79.2 JIS K 5602: 2008 General reflectance (780nm~2500nm) % - 68.1 JIS K 5602: 2008 General reflectance (300 ㎚ ~ 2500 ㎚) % - 71.6 JIS K 5602: 2008

-Use: For quality control The heat shielding paint composed of the above composition is a water-soluble MMA resin having elasticity, and uses eco-friendly resin and heat shielding paint, so it is excellent in reducing atmospheric temperature and energy saving, and has excellent compressive, tensile, and flexural strength. It is excellent in chemical resistance, abrasion resistance, non-reactive flame retardant resin in salt and winter, and has a low maintenance cost due to its semi-permanent life.

On the other hand, with respect to 100 parts by weight of the fiber, 10 parts by weight of the heat shielding coating film are mixed, and the heat shielding coating film includes a polyethylene terephtalate (PET) film having a predetermined length and width; It consists of an emulsion that is silkscreen printed on the film, and the PET film has a thickness of 125 μm, the emulsion is zinc oxide (ZnO) 40 parts by weight, white solidifying agent 30 parts by weight of 100 parts by weight of UM resin Parts, 2 parts by weight of a water reducing agent, 1 part by weight of an antifoaming agent, and 1 part by weight of a dispersant.

That is, the heat shielding coating film according to the present invention is characterized in that an emulsion is silkscreen printed on the surface of a polyethylene terephtalate (PET) film.

Here, the PET film has a thickness of 125 μm.

In particular, polyethylene terephtalate (PET) is one of plastic molding materials.

PET molding materials reinforced with glass fiber have good properties comparable to those of thermosetting resins, so they are used for electronic parts, automotive electronic parts, and hot air balloons, and non-reinforced molding materials are widely used for blow molding.

In addition, PET is widely used as a food container due to its high non-toxicity, odorlessness, and transparency.

Non-reinforced PET has excellent mechanical and electrical properties, chemical resistance, etc., but is weak in impact strength and heat resistance, and it is difficult to mold.

However, glass fiber reinforced PET improves mechanical strength and dimensional accuracy, and at the same time, the heat resistance is remarkably improved by glass fiber reinforcement, and the heat deflection temperature is quite high as about 240°C.

In order to obtain the original heat resistance of reinforced PET, the important point is to sufficiently crystallize the molded product.

In this way, heating and cooling were performed after high-temperature molding or molding at a mold temperature (130-140°C) at which PET crystallizes.

However, as a result of the recent technological innovation, even the mold temperature of around 70℃ is determined, and low temperature mold products, which do not require heating and cooling after molding, have been developed and are receiving favorable reviews in the market.

However, the low-temperature molding method has disadvantages such as an increase in cost due to a change in the material of PET, and deterioration of the surface characteristics of a molded product due to low-temperature molding temperature molding, and thus a high-temperature molding method is also used in parallel.

Looking at the characteristics, the heat resistance is 265℃ for the melting point, the temperature for heat deformation is 240℃, and the continuous heat resistance is 150℃.

The electrical properties of general PET products are the same as other polyesters, but special PET products are resistant to electric arcs and cracks.

It has good chemical resistance, dimensional stability and weather resistance, and has excellent stress cracking properties.

The polyethylene terephtalate (PET) is a saturated polyester obtained by polycondensation of terephtal and ethylene glycol (Ethylene Glycol).

PET has a shorter molecular ring length than polybuthylene terephtalate and has a structure that does not bend well, so it has good stiffness and heat resistance, but because it promotes the crystallization rate, the molding temperature needs to be set to 110°C or higher.

In addition, there is a method of adding sodium carboxylic acid salt or potassium salt below 100°C, and a method of promoting crystallization by adding an aliphatic organic ester as a plasticizer.

Unreinforced PET is mainly used as a glass fiber reinforcement because of its problems in moldability, impact resistance, and heat resistance.

The consumption of non-reinforced PET is rapidly increasing due to the recent development of stretch suction technology.

Since PET is difficult to crystallize as it is because it is different from PBT, it is not used only as PET itself as a molding material, but is basically added with a glass content of about 30%, and the glass content is higher for high rigidity and low shrinkage.

In addition, mica is also used in combination to prevent warpage and minimize the difference in physical properties due to the flow direction of the polymer.

There are two main methods of making PET.

One is by dimethyl terephthalic acid and the other is by direct polymerization.

In the dimethyl terephthalic acid method, Bis(β-Hydroxy Ethly)Terephthalate is obtained through transesterification by heating dimethyl terephthalic acid and ethylene glycol at 150~230℃.

Then, when Bis(β-Hydroxy Ethly)Terephthalate is set to 1 Torr or less and heated to 270~300℃, polycondensation proceeds and ethylene glycol flows out to obtain PET.

In the direct polymerization method, high purity Terephthalic acid and Ethylene Glycol are pressurized and reacted at about 230°C to obtain Bis(β-Hydroxy Ethyl)Terephthalate. The polycondensation reaction is in the same form as the Terephthalic acid Dimethyl method.

Meanwhile, the emulsion is composed of 100 parts by weight of the UM resin, 40 parts by weight of zinc oxide, 30 parts by weight of a white solidifying agent (hardener), 2 parts by weight of a water reducing agent, 1 part by weight of a defoamer, and 1 part by weight of a dispersant.

Here, the UM resin comprises a binder resin made of a urethane acrylate resin as a first binder resin and a polymethyl methacrylate resin as a second binder resin; It consists of a white solidifying agent (hardening agent).

That is, the UM resin is composed of a binder resin and a white solidifying agent (curing agent).

Here, the binder resin is made of a urethane acrylate resin as a first binder resin and a polymethyl methacrylate resin as a second binder resin.

The urethane acrylate resin, which is the first binder resin, imparts durability to the soil grout material and at the same time may firmly bond the earth particles to each other.

The urethane acrylate resin is a hybrid resin having both the characteristics of urethane and acrylate.

These urethane acrylate resins are generally prepared by polymerization of a urethane prepolymer and a hydroxyalkyl acrylate.

The urethane prepolymer is formed by a polymerization reaction of polyol and isocyanate, and the types thereof are various.

In addition, examples of the hydroxy alkyl acrylate include methyl methacrylate, 2-hydroxy ethylmethacrylate, and n-butyl acrylate.

It is appropriate that the content of the binder resin including the urethane acrylate resin and the polymethyl methacrylate resin is in the range of about 20 to 60 parts by weight based on 100 parts by weight of the UM resin.

In the UM resin described above, in addition to the urethane acrylate resin, which is the first binder resin described above, a polymethyl methacrylate resin may be added as the second binder resin.

At this time, the mixing ratio of the urethane acrylate resin as the first binder resin and the polymethyl methacrylate resin as the second binder resin is preferably used in a weight ratio of about 10 to 60: 90 to 40, but is not limited thereto.

By mixing and using polymethyl methacrylate with urethane acrylate, the strength of the improved product made of UM resin can be further increased.

In addition, in the UM resin, in addition to urethane acrylate resin and polymethyl methacrylate resin, hydroxyl ethyl methacrylate (HEMA) resin is additionally used as a third binder resin to reinforce the strength of the improved product. I can.

In addition, in the UM resin, a white solidifying agent (curing agent) may be used in order to make the urethane acrylate resin have a three-dimensional network structure, and the curing time of the urethane acrylate resin may be adjusted.

The white solidifying agent (curing agent) includes an organic peroxide such as benzoyl peroxide (BPO), but is not limited thereto.

In particular, the benzoyl peroxide not only facilitates curing of the urethane acrylate resin, but also thermally decomposes in a solvent to generate phenyl radicals and benzoate radicals to initiate polymerization of the urethane acrylate resin.

The white solidifying agent (curing agent) is used to adjust its content according to the ambient temperature and the surface temperature. For example, it is preferable to mix a large amount in winter and a small amount in summer.

In consideration of this point, it is appropriate that the content of the white solidifying agent (curing agent) is about 30 parts by weight based on 100 parts by weight of the UM resin.

If the content of the white solidifying agent (curing agent) is less than 30 parts by weight, curing may not occur properly, and if the content of the white solidifying agent (curing agent) is more than 30 parts by weight, the physical properties of the formed improved body will be reduced. I can.

On the other hand, the zinc oxide (ZnO) is a compound of oxygen and zinc. It has a melting point of 1,975°C (pressurized), 1,720°C (normal pressure), and a specific gravity of 5.47 (amorphous) and 5.78 (crystalline).

It turns yellow when heated to about 300℃, but becomes its original color when cooled.

It is an amphoteric oxide that is hardly soluble in water, but soluble in dilute acids and strong alkalis.

The particles are fine, and the covering power is lower than that of light white, but it is not toxic.

Most preferably, the zinc oxide (ZnO) contains 40 parts by weight based on 100 parts by weight of the UM resin.

On the other hand, the water reducing agent is a naphthalene-based high-performance water reducing agent, and preferably contains 2 parts by weight based on 100 parts by weight of the UM resin.

The antifoaming agent is a chemical used to remove harmful air bubbles, an oily substance having low volatility and high diffusion power, or a water-soluble surfactant, and preferably contains 1 part by weight based on 100 parts by weight of the UM resin.

In addition, the dispersant is a substance added to prevent agglomeration of microparticles generated when making smaller particles and colloidal particles by pulverizing large particles and agglomerated particles, and the peptizer is mainly 1 weight per 100 parts by weight of UM resin. It is preferred to contain parts.

Subsequently, in the arranging step (S400), a vibrating trowel (1.2) for plastering is placed on the part where the reinforcing mortar is installed.

Here, the vibrating trowel 1 for plastering includes a plate 10 having a conical shape at its front end, a rectangular shape at its rear end, and having an inclined surface 11 at both ends inclined upwards; Fixture 20 which is fixedly installed vertically in the center of the plate 10 and has a coil spring 21 built therein; A handle 30 attached to the upper surface of the fastener 20 in the longitudinal direction and made of a steel bar; A vibration unit 40 fixedly installed on the side of the fixture 20; It is composed of an air hose 50 that penetrates through the inside of the handle 30 and has one end connected to the vibrating unit 40 and the other end connected to the air compressor, and one side of the vibrating unit 40 has an air compressor and air. An air delivery unit 41 for receiving compressed air supplied from the hose 50 is installed, and an air control valve 42 for controlling the vibration by limiting the amount of air supplied to the vibration unit 40 at one side of the vibration unit 40 ) Is installed.

In addition, the vibrating trowel for plastering (2 is a plate 10 having an inclined surface 11 at both ends upwardly inclined; a housing (H) that is fixedly installed vertically at the center of the plate 10; the housing (H) A handle 30 made of a steel bar while being attached in the longitudinal direction to the upper surface of the housing; a vibration unit 40 fixedly installed in the housing; one end is connected to the vibration unit 40 through the inside of the handle 30 At the same time, the other end is composed of an air hose 50 connected to the air compressor, and one side of the vibration unit 40 is an air delivery unit 41 for receiving compressed air supplied from the air compressor and the air hose 50 Is installed, and an air control valve 42 is installed on one side of the vibration unit 40 to control the vibration by limiting the amount of air supplied to the vibration unit.

Subsequently, in the vibration generating step (S500), vibration of the vibrating trowel for plastering is generated through the vibration unit.

Here, when the vibration unit receives compressed air generated by the air compressor to the air hose and the air delivery unit, the end of the rod shaft moves forward and backward at high speed to generate vibration.

Subsequently, in the vibration compaction step (S600), the vibration generated in the vibration generation step (S500) is controlled through an air control valve, and the part where the reinforcing mortar is placed is vibrated and plastered with the vibration controlled through the air control valve. .

That is, in the vibration compaction step (S600), the reinforcing mortar installed on the damaged part of the concrete structure is vibration compacted and plastered as the plate vibrates with the vibration controlled through the air control valve.

Subsequently, in the finishing step (S700), a primer and a protective agent are applied to the vibration compaction and plastered portion in the vibration compaction step (S600).

Subsequently, the plastering finish for flattening is simply done without generating vibration using a vibrating trowel for plastering, if necessary, on the part coated with the primer and the protective agent.

Since the reinforcing mortar can be uniformly applied through the concrete section reinforcement method using the vibrating trowel for plastering according to the present invention consisting of the steps as described above, it is possible to solve the problem that bubbles do not come out due to the weak density inside the reinforcing mortar. There is an effect that can ensure the quality of the scene.

The preferred embodiments described in the detailed description of the present invention are illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims, and all modifications falling within the meaning of the claims are It is included.

1: Vibrating trowel for plastering 2: Vibrating trowel for plastering
10: plate 11: slope
20: fixture 21: coil spring
30: handle 40: vibration unit
41: air delivery unit 42: air control valve
50: air hose

Claims (6)

As a whole, the front end is made in a conical shape, the rear end is made in a square shape, the bottom surface is made of a smooth surface, and the inclined surface 11 is formed at both ends to be inclined upward at a predetermined angle;
Fixture 20, which is fixedly installed vertically at the center of the plate 10, and has a coil spring 21 inside which absorbs vibration generated from the vibration unit;
A handle 30 attached to the upper surface of the fixing member 20 in a longitudinal direction and formed of a steel bar, and having a groove formed in a portion corresponding to the operator's finger on the lower surface of the steel bar;
A vibration unit 40 fixedly installed on the upper surface of the side plate 10 of the fixture 20;
Through the inside of the handle 30, one end is connected to the air delivery unit 41 installed on one side of the vibration unit 40, the other end is connected to the air compressor, and the air generated by the air compressor is supplied to the vibration unit. It is composed of an air hose (50),
The handle 30 has a through hole formed therein in the longitudinal direction so that the air hose 50 can penetrate the inside,
The through hole is formed in a shape corresponding to the outer diameter of the air hose,
A flexible cover of any one of cloth, rubber, and synthetic fibers is installed on the handle 30,
An air delivery unit 41 for receiving compressed air supplied from the air compressor and the air hose 50 is installed on one side of the vibration unit 40,
An air control valve 42 is installed on one side of the vibration unit 40 to control vibration by limiting the amount of air supplied to the vibration unit,
The air control valve 42 is a vibrating trowel for plastering, characterized in that it is connected to the air delivery unit 41 to control compressed air supplied from the air compressor to the vibration unit 40 by manually adjusting the operator. As a whole, the front end is made in a conical shape, the rear end is made in a square shape, the bottom surface is made of a smooth surface, and the inclined surface 11 is formed at both ends to be inclined upward at a predetermined angle;
A housing (H) that is fixedly installed vertically on the central portion of the plate (10);
A handle (30) attached to the upper surface of the housing (H) in a longitudinal direction and formed of a steel bar, and having a groove formed in a portion corresponding to the operator's finger on the lower surface of the steel bar;
A vibration unit 40 fixedly installed in the housing H;
Through the inner side of the handle 30 and the upper surface of the housing H, one end is connected to the air delivery unit 41 installed on one side of the vibrating unit 40, the other end is connected to the air compressor, in the air compressor It is composed of an air hose 50 that supplies the generated air to the vibration unit,
The handle 30 has a through hole formed therein in the longitudinal direction so that the air hose 50 can penetrate the inside,
The through hole is formed in a shape corresponding to the outer diameter of the air hose,
A flexible cover of any one of cloth, rubber, and synthetic fibers is installed on the handle 30,
An air delivery unit 41 for receiving compressed air supplied from the air compressor and the air hose 50 is installed on one side of the vibration unit 40,
An air control valve 42 is installed on one side of the vibration unit 40 to control vibration by limiting the amount of air supplied to the vibration unit,
The air control valve 42 is a vibrating trowel for plastering, characterized in that it is connected to the air delivery unit 41 to control compressed air supplied from the air compressor to the vibration unit 40 by manually adjusting the operator. Chipping step of chipping the deteriorated portion of the concrete structure (S100);
A washing step (S200) of washing the area chipped in the chipping step at high pressure;
A laying step (S300) of laying reinforcement mortar on the area washed in the washing step;
Arrangement step (S400) of arranging vibration-type trowels (1, 2) for plastering in the part where the reinforcing mortar is installed;
A vibration generating step (S500) of generating vibration through the vibration unit 40 of the vibrating trowel for plastering (1, 2);
The vibration generated in the vibration generating step is controlled through the air control valve 42, and the part where the reinforcing mortar is installed is vibrated with the vibration-type trowel (1, 2) for plastering by the vibration controlled through the air control valve (42). Vibration compaction step of compaction (S600);
Concrete structure section reinforcement method using a vibrating trowel for plastering, characterized in that consisting of a finishing step (S700) of applying a primer and a protective agent to the vibration compaction and the plastered upper surface. The method of claim 3,
The vibrating trowel 1 for plastering has a front end in a conical shape, a rear end in a square shape, a bottom surface having a smooth surface, and a plate having an inclined surface 11 inclined upward at a certain angle at both ends ( 10);
Fixture 20, which is fixedly installed vertically at the center of the plate 10, and has a coil spring 21 inside which absorbs vibration generated from the vibration unit;
A handle 30 attached to the upper surface of the fixing member 20 in a longitudinal direction and formed of a steel bar, and having a groove formed in a portion corresponding to the operator's finger on the lower surface of the steel bar;
A vibration unit 40 fixedly installed on the upper surface of the side plate 10 of the fixture 20;
Through the inside of the handle 30, one end is connected to the air delivery unit 41 installed on one side of the vibration unit 40, the other end is connected to the air compressor, and the air generated by the air compressor is supplied to the vibration unit. It is composed of an air hose (50),
The handle 30 has a through hole formed therein in the longitudinal direction so that the air hose 50 can penetrate the inside,
The through hole is formed in a shape corresponding to the outer diameter of the air hose,
A flexible cover of any one of cloth, rubber, and synthetic fibers is installed on the handle 30,
An air delivery unit 41 for receiving compressed air supplied from the air compressor and the air hose 50 is installed on one side of the vibration unit 40,
An air control valve 42 is installed on one side of the vibration unit 40 to control vibration by limiting the amount of air supplied to the vibration unit,
The air control valve 42 is connected to the air delivery unit 41 to control compressed air supplied from the air compressor to the vibration unit 40 by manually adjusting the concrete using a vibrating trowel for plastering Structure section reinforcement method. The method of claim 3,
The vibrating trowel 2 for plastering has a conical shape at its front end, a rectangular shape at its rear end, and has a smooth bottom surface, and a plate with an inclined surface 11 inclined upward at a certain angle at both ends ( 10);
A housing (H) that is fixedly installed vertically on the central portion of the plate (10);
A handle (30) attached to the upper surface of the housing (H) in a longitudinal direction and formed of a steel bar, and having a groove formed in a portion corresponding to the operator's finger on the lower surface of the steel bar;
A vibration unit 40 fixedly installed in the housing H;
Through the inner side of the handle 30 and the upper surface of the housing H, one end is connected to the air delivery unit 41 installed on one side of the vibrating unit 40, the other end is connected to the air compressor, in the air compressor It is composed of an air hose 50 that supplies the generated air to the vibration unit,
The handle 30 has a through hole formed therein in the longitudinal direction so that the air hose 50 can penetrate the inside,
The through hole is formed in a shape corresponding to the outer diameter of the air hose,
A flexible cover of any one of cloth, rubber, and synthetic fibers is installed on the handle 30,
An air delivery unit 41 for receiving compressed air supplied from the air compressor and the air hose 50 is installed on one side of the vibration unit 40,
An air control valve 42 is installed on one side of the vibration unit 40 to control vibration by limiting the amount of air supplied to the vibration unit,
The air control valve 42 is connected to the air delivery unit 41 to control compressed air supplied from the air compressor to the vibration unit 40 by manually adjusting the concrete using a vibrating trowel for plastering Structure section reinforcement method. The method of claim 3,
The reinforcing mortar is composed of 87 to 94% by weight of fast-setting cement, 0.05 to 0.2% by weight of fiber, active silica, zinc stearate, EVA (Ethylene-Vinyl Acetate Copolymer) re-emulsifying powder resin and water reducing agent. 13.5 to 22% by weight of a fast-setting cement mixture consisting of 4.5 to 12% by weight of a waterproofing agent and 0.45 to 1.8% by weight of a fluidizing agent; 67-79% by weight of aggregate; 0.045 to 0.096% by weight of retardant; 0.005 to 0.014% by weight of AE admixture; SB-latex (Styene Butadiene Latex) 55 to 84% by weight, styrene-acryl emulsion (Styrene-acryl Emulsion) 14.7 to 44.6% by weight, antifoaming agent 0.1 to 0.5% by weight, a latex binder consisting of 0.2 to 0.9% by weight wetting agent 3.5 to 6.5% by weight; Urethane acrylate (urethane acrylate) 10% by weight, butyl acrylate (butyl acrylate) 10% by weight, lithium silicate (Li2O3Si) 3% by weight, polymethyl methacrylate (polymethyl methacrylate) 60% by weight, 2-hydroxy ethyl meth A concrete structure section reinforcement method using a vibrating trowel for plastering, characterized by consisting of 2.95 to 5.39% by weight of a resin composition consisting of 15% by weight of acrylate (hydroxyl ethyl methacrylate) and 2% by weight of sodium silicate (Na2SiO3·nH2O).

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