KR101813625B1 - Apparatus for preventing corrosion steel reinforcement - Google Patents

Abstract

The present invention relates to an apparatus for preventing corrosion of reinforcing steel and, more specifically, relates to an apparatus for preventing corrosion of reinforcing steel, which can prevent reinforcing steel from rusting by a temperature and humidity environment change when storing the reinforcing steel. To achieve end, according to the present invention, the apparatus comprises: a frame body (10) arranged in the longitudinal direction of stacked reinforcing steel (1), and provided with a rail (11); and a moving heat source (20) capable of being moved along the rail (11) of the frame body (10) to keep the reinforcing steel (1) warm.

Description

[0001] APPARATUS FOR PREVENTING CORROSION STEEL REINFORCEMENT [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a reinforcing bar corrosion preventing device, and more particularly, to a reinforcing bar corrosion preventing device capable of preventing the reinforcing bars from rusting due to a change in the temperature and humidity environment when the reinforcing bars are stored.

Further, the present invention relates to a reinforcing bar corrosion preventing apparatus which can prevent the corrosion of reinforcing bars without applying a coating agent as in the prior art, thereby solving the problem of environmental pollution, will be.

Generally, reinforcing bars are made of steel bars and are mainly tensile. They are one of the mechanical structures that are very important in civil engineering and construction engineering. Usually, the material is made of carbon steel, which is made of reinforced concrete structure combined with concrete that receives compressive force rather than writing separately. Such reinforcing bars can be classified into various types as follows.

1) Tie Hoop

- Reinforces the main column of the column in the reinforced concrete tank, acts as a column as a horizontal reinforcing bar surrounding the main column at right angles to prevent buckling and maintain spacing.

2) Major

 - Reinforced concrete beams or columns, which bear compressive or tensile forces.

 - In general, tensile strength reinforcing bars are thick, shear reinforcing bars are thin reinforcing bars, and thick reinforcing bars for tensile strength are sometimes called "main bars." Precisely, all reinforcing bars subject to structural calculation are called main bars. It is customary to call it the main)

3) Abs

 - In the retaining wall, it implies that the roots of both the vertical roots and the horizontal roots are arranged in two layers.

4) Short

 - In the retaining wall, it refers to the roots of a single layer in both the vertical roots and horizontal roots (ie, single roots)

5) Auxiliary muscle

 - other than reinforcing bars required for structural calculations, used for supporting purposes or to maintain position and shape

6) Upper root

 - The main beam which is placed upward in beam, slab, etc.

7)

 - Reinforcing bars placed downward on beams, slabs, etc.

8) The hunting

 - In order to increase the strength of beam and increase the stiffness of beam by ramen structure beam and column joint, etc., we refer to the part attached to the column by lowering the lower part of the beam. In case of wall structure, If it does not, it refers to the portion that increases the width of beam at the intersection of the cabin to secure the horizontal stiffness of the wall,

9) Shear reinforcement

 - Reinforcing bars used to cope with shear forces, such as belt and stay, and also called directional roots arranged at right angles to the main bar.

10) Retaining

 - the tensile and compressive reinforcement in the beam, ie the reinforcing steel surrounding the main girder to sufficiently constrain the inner concrete, and the hook of the Stirrup should be bent more than 135 degrees

11) Reinforcement bars

 - Reinforcing the lateral force or shear force by hoop used for column or stirrup used for beam. It is used for maintaining the crack and coating of concrete.

However,

 - Reinforcing bars that function to distribute stress evenly by placing the main bars directly and delivering equal stress to the main bars

13) Bent bar

 - Reinforcing bars or bending reinforcement bars. Reinforcing bars to be used for tensile stress. Generally, reinforcing bars are used to reinforce the ends of the beam (1/4 point). There are a lot of breaks

14) Deformed bar

 - Reinforced reinforced bars with barbs on the surface of the reinforcing bars to increase the adhesion

15) Tension bar

 - Reinforced reinforced concrete structure with tensile strength placed on the tension side

16) High tensile bars

- When the steel mark in HD is HD, it is generally reinforced steel with a yield strength of 3500 kg / cm ₂ or more and a small amount of silicon, manganese and nickel added to the carbon steel.

However, since various kinds of reinforcing bars as described are difficult to be stored and managed since they are long after being manufactured, they are exposed to external temperature or humidity changes. In particular, they are corroded during the winter season, do.

In Patent Document 1, in order to repair and prevent corrosion of steel reinforced with corrosion caused by salting, neutralization or a combination of these, a process of cleaning the surface of the concrete by high-pressure water washing, followed by drying and surface roughness securing, And a method for curing and restraining a corrosion reinforcing bar comprising a step of curing after coating and a step of forming a finish porcelain layer.

To this end, Patent Document 1 is a rust-preventive complex alkali recovery agent comprising 50 to 70% by weight of a highly alkaline aqueous solution and 30 to 50% by weight of a nitrite-based rust inhibitor in the curing process, and after the application of the complex alkali recovery agent, Applying an aqueous surface strengthening agent on the composite alkali remover application layer in order to increase the strength of the concrete surface and increase the adhesion strength with the surface coating agent after the curing process, And a surface coating material in which a nitrite-based rust inhibitor of a solid content is incorporated into the admixture of the inorganic cement powder and the SBR-based latex in a ratio of 3: 1 in an amount of 10% or less of the weight of the inorganic cement powder, .

However, the disclosed patent document 1 is intended to prevent corrosion over a long period of time in a concrete structure, and is different from the concept of preventing corrosion on storage only by the reinforcing steel itself.

 Patent Document 2 relates to a surface treatment solution composition that effectively prevents corrosion of reinforcing bars, and comprises (A) 20 to 30% by weight of nanoceramics; (B) 5 to 15% by weight of weakly alkaline water-dispersible silica; (C) 1 to 5% by weight of alumina sol; (D) 10 to 20% by weight of a water-soluble or water-dispersible resin; (D) 5 to 10% by weight of an organometallic compound selected from a titanate compound, a zirconium compound and a silane compound; And (E) a residual amount of water such that the total amount of the composition is 100% by weight based on the total weight of the composition, is sprayed onto the reinforcing bars to prevent corrosion.

However, as in Patent Document 2, the concept of coating the reinforcing steel with a conventional chemical agent is that the cost of using a reinforcing coating agent is increased in order to overcome the problem of storing the reinforcing steel, the human health due to the use of the chemical, Water, contamination of the surrounding environment after using the coating agent, and the like.

Korean Patent Registration No. 10-0415168 Korean Patent Registration No. 10-1140932

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rebar corrosion prevention device capable of preventing rusting of reinforcing bars according to environmental conditions of temperature and humidity by heating reinforcing bars through a physical method. have.

It is another object of the present invention to provide a corrosion inhibiting device for reinforcing steel which does not cause environmental pollution or adversely affects the human body because it can prevent corrosion of reinforcing steel through an environmentally friendly physical method rather than a chemical method.

In order to achieve the above object, the present invention provides a frame structure comprising: a frame body disposed along a longitudinal direction of a loaded reinforcing bar and provided with a rail; And a movable heat source movable along the rails of the frame body to heat the reinforcing bars.

Here, the frame body is provided with a rod-like rotating body and a blocking shutter, one side of which is fixed to the rotating body, so that the frame body can be opened and closed.

In addition, at least one of a height adjusting cylinder and a width adjusting cylinder is installed in the frame body.

Meanwhile, the movable heat source includes a motor-driven roller that is movably installed on the rail, a connection member that is extended to the motor-driven roller, a reflection plate that is rotatably fixed to the connection member by a hinge shaft, And a heating unit.

In addition, a blowing fan for air circulation is further provided in the frame body.

As described above, according to the present invention, since the reinforcing bars can be continuously heated by the movable heat source moving along the frame body, it is possible to prevent the moisture from getting on the surface or the condensation phenomenon, It can be prevented from rusting.

In addition, since corrosion of reinforcing bars can be prevented without applying a coating agent as in the prior art, concerns about environmental pollution, increase in management cost, and human health due to use in a coating agent can be thoroughly cleared.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a rebar corrosion prevention apparatus according to the present invention; FIG.
2 is a view schematically showing a rebar corrosion prevention apparatus according to the present invention provided with a shutoff shutter.
3 is a view showing a frame body provided with a height adjusting cylinder and a width adjusting cylinder.
4 is a cross-sectional view schematically illustrating a movable heat source of a rebar corrosion prevention device according to the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a reinforcing steel corrosion preventing device according to the present invention will be described with reference to the drawings.

1 is a schematic view of a rebar corrosion prevention apparatus according to the present invention.

The present invention basically comprises a frame body 10 arranged along the longitudinal direction of a reinforced bar 1 and provided with a rail 11 and a reinforcing bar 1 which is movable along the rail 11 of the frame body 10, And a movable heat source 20 for warming the heat source.

The frame main body 10 is constituted by a bar member or a bar member (a member arranged in a direction perpendicular to the reinforcing bar 1), a longitudinal member (a member disposed along the longitudinal direction of the reinforcing bar 1) (A member arranged perpendicularly to the frame body 10 in a direction perpendicular to the frame body 1). More specifically, when the frame body 10 is placed on the loaded reinforcing bars 1, In the case of a transverse member disposed at a right angle to the longitudinal direction of the reinforcing bar 1 so that the reinforcing bar 1 can be disposed inside the frame body 10, it is preferable that the frame member 10 is not provided in contact with the reinforcing bar 1 at the lower portion thereof.

Here, the rail 11 is interposed between longitudinal members arranged vertically in a longitudinal member arranged back and forth and up and down along the longitudinal direction of the reinforcing bar 1, or directly mounted on the longitudinal member. The movable heat source 20 ) Is installed so as not to interfere with the movement of the reinforcing bars (1) while facing the reinforcing bars (1).

In addition, a blowing fan 25 may be further provided inside the frame body 10 in such a manner that the cold air flows downward due to the heat generated by the heater 24 Since the hot air flows upward, warm air can be directed to the lower side of the frame body 10 to circulate the air so that warm air reaches the reinforcing bar 1, thereby increasing the efficiency of inserting the reinforcing bar 1. [

The air blowing fan 25 is provided only on the inner upper portion of the longitudinal member of the frame body 10 so that the upper warm air flows into the upper side of the longitudinal member in a state in which the frame body 10 is hermetically closed, Type blowing fan is provided on the inner upper side of the longitudinal member and the exhaust-type blowing fan is provided on the inner lower side of the longitudinal member as shown in the figure, so that the frame body 10 So that the upper and lower air circulation can be performed.

FIG. 2 is a view schematically showing a rebar corrosion prevention apparatus according to the present invention in which a shutoff shutter is installed. In the frame body 10, a rod-like rotary body 12 and a rotary body 12 are fixed at one side A shutoff shutter 13 for opening and closing the frame body 10 may be selectively installed so that the cold heat source 20 warms the reinforcing bar 1 during the winter season so that outside cold air is directly supplied to the reinforcing bar 1 So that the frame body 10 is closed.

The blocking shutter 13 can be wrapped around the rotating body 12 to unfold the frame body 10 in response to the rotation of the rotating body 12 or to open the frame body 10, In order to close the side surface of the frame body 10, it is preferable that the rotation body 12 is installed on the upper part of the body so that the interruption shutter 13 can be lowered by its own weight. However, when the upper surface of the frame body 10 is closed Even if the rotating body 12 is located above the frame body 10, a work process may be accompanied by artificially pulling the blocking shutter 13 to unfold and seal it.

In order to prevent the blocking shutter 13 from being detached from the frame body 10, the rotating body 12 is mounted on the moving member of the blocking shutter 13, (Not shown) is formed in the longitudinal member so that both sides of the shutoff shutter 13 can be smoothly unfolded or wound around the rotating body 12 as the side of the shutoff shutter 13 is movably inserted into the sliding groove.

For reference, the rotating body 12 may be manually rotated or rotated by a mechanical means such as a motor, thereby expanding or winding the blocking shutter 13 accordingly.

FIG. 3 is a view showing a frame body including a height adjusting cylinder and a width adjusting cylinder. In the frame body 10, at least one of a height adjusting cylinder 14 and a width adjusting cylinder 15 may be installed. The cylinder 14 for height adjustment is for adjusting the height of the frame body 10 in correspondence with the stacking height of the reinforcing bar 1 and the width of the width adjusting cylinder 15 in the width- While the height adjusting cylinder 14 should be installed at the bottom or the middle of the vertical member and the width adjusting cylinder 15 should be installed at the middle of the lateral member.

The height regulating cylinder 14 and the width regulating cylinder 15 may be conventional hydraulic or pneumatic cylinders and may have similar functions by hand instead of the height regulating cylinder 14 and the width regulating cylinder 15. [ Alternative components such as corrugated tubes (not shown) may also be used.

For reference, a hydraulic cylinder means a device that can exercise using hydraulic pressure. The theoretical background in which a hydraulic cylinder moves depends on Pascal's principle.

In addition, the hydraulic cylinder described is divided into a single-acting type and a double-acting type. The single-acting hydraulic cylinder removes the hydraulic pressure of the hydraulic pump in the form of a hydraulic jack for lifting an automobile, (The only way to lift it is to lift it down by gravity, without using the force to remove the hydraulic pressure), and the vehicle's brake cylinder also follows this approach.

A double acting hydraulic cylinder is applied to a machine that needs to operate in both directions such as forklift, bulldozer shovel, and aircraft wheel, with the cylinder moving down when the hydraulic pressure is applied to the upper inlet and the hydraulic pressure is applied to the lower side. It is also applied to a variety of experimental apparatus such as a hardness meter and a tensile compression system.

Although an electric actuator is used instead of a hydraulic cylinder, there is a great difference in the magnitude of the force, so it is desirable to use these hydraulic cylinders almost in most cases where large forces are required.

A pneumatic cylinder is a device that converts compressed air into energy. When two cylinders are connected by piping, the force applied to one cylinder causes a force to be generated in the other cylinder.

These pneumatic cylinders can be freely used by anyone who is not a matter of place, and can be returned to the original atmosphere when they are used. Therefore, there is no need to worry about pollution or other problems, And it is advantageous that it can be easily stored in a tank.

A disadvantage of the pneumatic cylinder is that it is difficult to precisely control the gas due to the compressibility of the gas, and when the compressed air returns to the atmosphere, a large exhaust noise is generated and the output is weaker than electric energy. .

FIG. 4 is a cross-sectional view schematically illustrating a movable heat source of a rebar corrosion prevention device according to the present invention.

Meanwhile, the movable heat source 20 may include a motorized roller 21 movably installed on the rail 11, a connecting member 22 extending from the motorized roller 21, A reflection plate 23 fixed to the member 22 and a heater 24 installed on the reflection plate 23.

The electric roller 21 is moved along the rail 11 from the other side to the other side repeatedly from one side to the other side in the longitudinal direction of the reinforcing bar 1 and is operated through a separate power supply line, When the rail 11 has a straight shape like a longitudinal member, it may be movable in both directions. However, when the rail 11 has a circular structure like an ellipse, it may be movable only in one direction.

For reference, in the case where the rail 11 has an elliptical circulation structure, it may be considered to insulate the upper and lower portions of the reinforced bar 1 when the height of the reinforcing bars 1 is high.

The connecting member 22 is merely to connect the electric roller 21 and the reflection plate 23 so that the electric roller 21 and the reflection plate 23 may be fixed to the electric roller 21 and the reflection plate 23 in various conventional ways such as bolting and welding, The connection member 22 is rotatably fixed to the reflection plate 23 by the hinge shaft 22-1 so that even if the height or width of the frame body 10 is changed, As shown in Fig.

The connection member 22 is not particularly limited in structure or shape so long as it connects the electric roller 21 and the reflection plate 23 as described above.

The reflector 23 is used to allow the heat generated from the heater 24 to be transmitted to the reinforcing bar 1 without being dispersed. The reflector 23 can be made of aluminum, % Or more and is known to have a high heat reflection efficiency.

Hereinafter, characteristics of aluminum used for the reflection plate 23 will be described.

- Since the specific gravity is only about one-third of that of iron and copper, it is a metal material that can contribute to the weight reduction of parts materials by replacing heavy steel materials in various fields such as aircraft, automobile, railway car, ship container .

- Compared with other metals, it is easy to plasticize and can shape various shapes. It is used for molds and precision parts because it can easily produce thin foil or complex shaped extruded shape, rolled and forged products and has excellent cutting workability.

- It has a relatively low melting point as compared with other metals and can increase the fluidity of the molten aluminum alloy by adding Si or the like, which is advantageous for making a complicated shape into a casting.

- The surface of the material can be treated for various colors, high hardness and excellent corrosion resistance, and surface treatment is easy. By giving a brilliant color to the surface, it can be made of light and luxurious materials.

- Because the melting point is low, the discarded AL products can be easily melted and the regeneration is relatively easy.

- It reacts with oxygen in the atmosphere to form a thin and dense oxide film on the surface to prevent corrosion.

- It is used for magnetic disks for computers, satellite antennas, and medical equipment because it has no magnetic fields and does not affect the magnetic field.

- It keeps excellent toughness even at cryogenic temperature, and it is used in low temperature plant, liquid nitrogen, liquid oxygen, LNG storage tanks, and is attracting attention in cutting-edge industrial field.

- Reflected rays and electromagnetic waves such as infrared rays and ultraviolet rays are applied to reflectors and spacesuits of radiators and lighting fixtures.

- Electrical conductivity is about 60% of copper, but its specific gravity is only about one-third of that of copper. Therefore, double current can be passed compared with copper of the same weight, so that various wires, semiconductors or electrons It is used as a material for wiring of devices.

- Since it is harmless to human body, it is odorless, hygienic and does not pollute the soil, it is widely used for packaging of foods and medicines, beverage cans, medical devices and household utensils.

- When applied to a vacuum device, the gas release rate from the metal itself is very low, which is advantageous in securing a high vacuum and is utilized in a vacuum pump, piping, and high vacuum semiconductor devices.

As the heater 24, a conventional infrared lamp, a nichrome coil, or the like may be used. It is preferable that a line for applying power to the heater 24 is drawn out to the rear of the reflection plate 23 so as not to be damaged by heat .

Particularly, it is preferable that the heater 24 uses an infrared lamp, and the reason for this can be confirmed through the following characteristics of infrared rays.

 (1) Theoretical background

When a light (energy) is emitted from an arbitrary light source (object), the amount of measurement related to physical energy is defined by the term "radiation" before the unit name, and the amount of light detected by the human eye is " quot; light ", and the amount of measurement along the wavelength uses the term "spectral ".

In order for a person's eyes to feel light, electromagnetic waves of sufficient intensity must be visible in the 0.38 to 0.77 μm wavelength region, and light in other wavelength regions can not be perceived even if they come in enough intensity. Generally, the energy region emitted by an object at about room temperature (300 K = 27 ° C) is invisible because it is almost independent of the spectral region of visible light. Infrared rays are electromagnetic waves existing between the visible ray and the Radar / Radio wavelength region in the 0.77 ~ 1,000 ㎛ wavelength band.

All objects above minus 273 ° C have minute vibrations of atoms, the basic units of matter. Since the vibrational energy of these atoms is the same as the energy of the infrared region, all objects are emitting infrared rays. The higher the temperature, the greater the amount of infrared radiation that is emitted. For this reason, infrared rays are also referred to as heat rays.

However, not all objects emit the same infrared rays. There are some substances that are better able to emit infrared rays, and others that do not. Generally, they are found in ceramics such as brick, clay, ceramics, and yellow clay, and they are not found in metallic materials such as gold, silver, copper and iron. This is called emissivity.

The emissivity is a value between 0 and 1, and for an ideal object, the emissivity is 1. Such an object is called a blackbody. The emissivity of ceramics has mostly a value of 0.9 or more, and the metal system has a value of 0.5 or less. To understand the relationship between infrared and temperature, you have to understand the infrared radiation phenomenon of black body.

This physical phenomenon was studied by several physicists in the early 1900 's and was systematically established by a scientist named Planck. The black body does not mean that the color is black, but when light enters the black body, it does not come out again, which means that it is absorbed completely inside the black body. In other words, if you apply heat to a black body, all of the heat is absorbed by the blackbody, and the absorbed heat is lost in the form of infrared rays.

(2) Classification and application of infrared rays

Near infrared, usually 3 to 6 ㎛, mid infrared, up to 6 to 15 ㎛ are called far infrared rays, and up to 15 ㎛ and up to 1 mm are referred to as extreme infrared infrared. There are the following reasons to divide the infrared into various areas.

Since infrared rays are waves and particles like electrons, infrared rays of an area from an object collide with or absorb the particles in the air. The wavelength region closely related to our lives is far infrared ray and widely applied to civilian use. The middle infrared ray is used for military use because it matches with the temperature from the smoke of aircraft or missile, and the near infrared ray region is applied to optical communication.

In the event of a fire, it is impossible to judge a survivor or a situation in the middle of a fire after a fire, but it is possible to judge the situation on the spot with the same effect as when there is no smoke when viewed through an infrared sensor, . In order to determine whether there is an abnormality in the integrated circuit board, it is easy to find the wrong position because the region with the abnormality is heated by infrared rays.

If you want to read the temperature in a very high temperature furnace or furnace, the existing thermocouple melts because of the high temperature the moment it is put into the furnace. Therefore, there is no method other than non-contact infrared. In addition to this, it can be applied to all fields where heat is generated such as electric wiring abnormality.

Other effects of infrared rays include the following.

1) It has strong effect of penetration because it has warm effect and long wavelength.

2) Sterilization effect due to infrared heat

3) Preventing aging of human body, anticipating adult diseases, restoring fatigue.

4) No pollution worries about the surrounding air

When the infrared lamp is used as the heater 24, there is no concern about the ambient air pollution when storing the reinforcing bar 1 in a separate closed space such as a warehouse, It is preferable that the infrared lamp is used as the heater 24 because it can expect a beneficial effect on the human body even if it is exposed to infrared rays.

In order to prevent the corrosion of the reinforcing bar 1 due to the condensation phenomenon, the following measures can be considered. First, there are surface condensation and internal condensation as condensation phenomenon.

Surface condensation is a phenomenon of dew condensation that occurs when the surface temperature of walls, pipes, and glass surfaces is lowered and the air temperature near the surface is below the condensation temperature. When the surface is faded due to the number of dew condensation or mold have.

The reason for the occurrence is that when the difference between the external temperature and the room temperature is large, and the internal humidity is considerably high, the preventive measures must keep the room temperature constant, It is preferable to ventilate frequently.

The present invention can be applied to a corrosion prevention device for a steel reinforced concrete according to the present invention in consideration of the principle of condensation phenomenon and a preventive measure, The first and second temperature and humidity sensing units are provided to detect the external temperature so that the mobile heat source 10 can be controlled according to the seasonal changes of the temperature and humidity of the inside and the outside of the frame body 10, ) Will enable optimized temperature management for corrosion protection.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, .

Claims (5)

A frame body (10) arranged along the longitudinal direction of the loaded reinforcing bar (1) and provided with a rail (11);
And a movable heat source (20) movable along the rail (11) of the frame body (10) and for heating the reinforcing bar (1)
In the frame body 10,
A rebar corrosion prevention device comprising a rod-like rotating body (12) and a blocking shutter (13) having one side fixed to the rotating body (12) and capable of opening and closing the frame body (10).
delete The method according to claim 1,
In the frame body 10,
A height adjusting cylinder (14) and a width adjusting cylinder (15).
The method according to claim 1,
The mobile heat source (20)
An electric roller 21 movably installed on the rail 11,
A connecting member 22 extending from the electric roller 21,
A reflection plate 23 rotatably fixed to the connecting member 22 by a hinge shaft 22-1,
A heater 24 installed on the reflection plate 23,
Wherein the reinforcing bar is formed of a steel plate.
The method of claim 4,
Wherein the frame body (10) is further provided with a blowing fan (25) for air circulation.

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