KR20190134444A - Using it with concrete early frost damage and carbonation depth measurement device - Google Patents

Abstract

The present invention relates to a concrete early frost damage and carbonation depth measurement device and a measurement method using the same. By perforating the concrete structure and measuring the color change state of reagent such as supplied water or phenolphthalein for each area with regard to a perforated part, it is possible to precisely measure the early frost damage and a carbonation state of concrete for each depth. The measurement method includes a drilling step, a reaming step, a solution feeding step, and a measurement and recording step.

Description

Concrete Freezing and Neutralization Depth Measurement Device and Measurement Method Using It {USING IT WITH CONCRETE EARLY FROST DAMAGE AND CARBONATION DEPTH MEASUREMENT DEVICE}

The present invention relates to an apparatus for measuring concrete initial freezing and neutralization depth, and a measuring method using the same, and more specifically, whether or not an initial freezing occurs due to freezing of moisture at the initial stage of curing of cured concrete, and causes such as carbon dioxide or acid rain in the air. Due to this, it is possible to grasp the chemical state of the concrete by measuring the depth of neutralization generated in the concrete structure, and thus the concrete initial freezing and neutralization depth measuring device capable of predicting the durability and life of the concrete structure and the measuring method using the same It is about.

In general, a healthy concrete structure is produced by the process of cement solidified by opening the water, containing calcium hydroxide as one of the main components exhibits a strong alkaline state of pH 12 to pH 13. However, in cold weather, the moisture contained in the cured concrete freezes or freezes and thaws repeatedly, causing cracks in the interior of the concrete or peeling off of the surface of the concrete, causing the concrete to gradually deteriorate. The problem is that the strength is lowered.

In addition, the cement constituting the concrete is neutralized by losing the alkalinity of the concrete by the calcium hydroxide produced through the hydration reaction with water and chemically reacted with carbon dioxide or acid rain in the air gradually converted to calcium carbonate.

In general, when the pH inside the concrete is 11 or more, a passivation film is formed on the surface of the rebar to prevent the reinforcing steel from rusting, but when the pH is lower than 11 due to neutralization, the reinforcing steel is rusted. The volume of will expand.

In detail, Figure 1 is a view for explaining the concept of the neutralization process of a typical concrete structure is shown.

As shown in FIG. 1, the neutralization of a general concrete structure occurs when carbon dioxide slowly penetrates from the surface of the reinforced concrete structure 1 to the reinforcing bar 2 which is reinforced at a predetermined depth, wherein the carbon dioxide is reinforced The time and speed up to (2) are very important variables for neutralization.

The concrete neutralization will be described in detail as follows. Cement, one of the main materials of reinforced concrete, has strong alkalinity. Therefore, corrosion does not occur in the reinforcing bar 2 existing inside the concrete structure 1 in a general environment. However, if the concrete structure 1 is in constant contact with carbon dioxide in the atmosphere or is frequently subjected to acid rain, the reinforcing steel bars 2 in the concrete structure 1 may be placed in a corrosive environment. In addition, with the development of cities, the neutralization of major concrete buildings is being promoted as the emissions of monoxide and carbon dioxide increase.

The determination of the initial freezing and neutralization of the concrete structure is very important in relation to the life and durability of the concrete structure.

Korean Patent Registration No. 10-1736347, which is a conventional patent technology, discloses a device for concrete neutralization and crack measurement using a smart device. According to the prior art, a guide in which the image capturing means is formed is formed on the upper side of the case of the smart device. The guide is inserted into a perforation formed in the depth direction of the concrete, and a method of measuring the neutralization depth by photographing the color change zone according to the indicator using the image pickup means provided in the guide is disclosed. According to this, it is possible to measure the neutralization of the concrete structure to reduce the error and accurate measurement, it is possible to smartly measure the surface cracks of the concrete using the crack imaging device provided on the outside of the case.

Korean Patent No. 10-0564102, which is another conventional patent technology, discloses a method for measuring neutralization of concrete by using an indicator. Neutralization measurement method according to this document, at least two or more of a phenolphthalein, indigo carmine, thymolphthalein, tropaeolin O and a mixed indicator of phenolphthalein and thymolphthalein To the cross section of the concrete, measuring the neutralization depth according to the color change of each indicator, and the neutralization depth by plotting the pH of each indicator on the vertical axis, the neutralization depth measured according to each indicator on the horizontal axis The step of preparing the respective pH distribution curves is sequentially performed, and the pH corresponding to the neutralization depth measured by each indicator is estimated from the pH distribution curve for each neutralization depth.

However, the prior art as described above has a problem that it is impossible to accurately measure the initial freezing and neutralization conversion state that occurs differentially depending on the depth of the concrete structure. In addition, according to the prior arts, there is a problem that the process of measuring the initial freeze and neutralization state of the concrete is too complicated and a lot of errors occur in the measurement process.

Therefore, while solving the above problems, there is a need for a device for measuring the concrete initial freeze and neutralization depth of the new structure capable of measuring the initial freeze and the neutralization state according to the depth of the concrete and the measuring method using the same.

Korea Patent Publication No. 10-1736347 (registered May 10, 2017). Korea Patent Publication No. 10-0564102 (registered March 20, 2006).

The present invention was developed to solve the above problems, more specifically, after drilling and reaming to a predetermined depth from the outer wall of the concrete structure, water in the perforated area formed in the concrete structure Injecting reagents such as or phenolphthalein and measuring the state of perforation area by zone according to preset time intervals, it is possible to determine the initial freeze and neutralization depth according to the depth of concrete It relates to a measuring method.

In order to achieve the above object, the method for measuring concrete initial dynamics and neutralization depth according to the present invention includes a drilling step for forming a predetermined area by drilling a predetermined depth by designating a predetermined position of the outer wall of the concrete structure, and the drilling step is formed through the drilling step. A reaming step for smoothly processing the outer diameter of the perforated area, a solution supply step of spraying a solution to the perforated area arranged through the drilling and the reaming step, and a solution inserted into the perforated area and permeated to the outer diameter of the perforated area Measured at time intervals, and includes a measuring and recording step of storing the measured data.

In addition, the measuring device for measuring the initial freeze and the neutralization depth of the concrete structure according to the present invention, a solution supply device that can continuously put the solution in the perforated perforated area of the concrete structure, inserted into the perforated area An injection device capable of measuring the state of the punctured area and a recording medium for separately storing and analyzing information measured by the injection device.

On the other hand, the description of the technology disclosed herein is only an embodiment for structural or functional description, the scope of the disclosed technology is not to be construed as limited by the embodiments described in the text. That is, the embodiments may be variously modified and may have various forms, and thus the scope of the disclosed technology should be understood to include equivalents capable of realizing the technical idea. In addition, the objects or effects presented in the disclosed technology does not mean that a specific embodiment should include all or only such effects, and thus the scope of the disclosed technology should not be understood as being limited thereto.

In addition, the meaning of the terms described in the present invention will be understood as follows. The terms “first” and “second” are used to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, a first component may be named a second component, and similarly may be named a first component as a second component.

Further, when a component is referred to as being "connected" to another component, it should be understood that there may be other components in between, although it may be directly connected to the other component. On the other hand, when a component is referred to as being "directly connected" to another component, it should be understood that there is no other component in between. On the other hand, other expressions that describe the relationship between the components, such as "between" and "between," or "neighboring to," and "direct neighboring to" should be interpreted as well.

Singular expressions should be understood to include plural expressions unless the context clearly indicates otherwise, and terms such as “include” or “have” refer to features, numbers, steps, operations, components, parts, or parts thereof described. It is to be understood that the combination is intended to be present and does not exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

According to the present invention proposed, the initial freezing and neutralization of concrete according to the depth of the concrete structure by measuring the state of the perforated region by injecting a reagent such as water or phenolphthalein into the perforated portion of the concrete structure The advantage is that the condition can be measured accurately.

In addition, the injection device equipped with a camera according to an embodiment of the present invention, since the operator can directly check the state within the perforated area of the concrete structure, the state measurement reliability of the concrete structure is greatly improved, and the operator measures the scale of the measurement scale. There is an advantage that can immediately confirm the initial freeze and neutralization depth of the concrete structure.

In addition, the injection device provided with the elastic member and the sensing member according to another embodiment of the present invention not only significantly reduces the incidence of breakage of the injection device inserted into the drilling area, but also by inserting and withdrawing the injection device into the drilling area. There is an advantage that the sensing member can easily grasp the neutralization depth of the concrete structure.

In addition, according to the injection device equipped with a sensor according to another embodiment of the present invention, since the injection device is inserted into the perforated area step by step at a certain time interval, the advantage that can be more precisely grasp the neutralization position of the concrete structure have.

1 is a view for explaining the concept of the neutralization process of a general concrete structure.
2 is a view showing a state of drilling a designated portion of the exterior of the concrete structure according to the invention.
3 is a view showing a state of reaming the drilling portion of the concrete structure according to the present invention.
4 is a view showing the supply of reagents such as water or phenolphthalein to the perforated region of the concrete structure in which the drilling and reaming operations are completed.
5 is a view showing an injection device for measuring the state of the punctured region is inserted into the punctured region of the concrete structure according to an embodiment of the present invention.
6 is a view showing an injection device for measuring the state of the perforated region according to another embodiment of the present invention.
7 is a view showing an injection device for measuring the state of the perforated region according to another embodiment of the present invention.
8 is a flowchart illustrating a process of determining whether to neutralize the concrete structure using the injection device shown in FIG. 7.
FIG. 9 is a flowchart for explaining a process of determining whether the concrete structure is initially frozen using the injection device shown in FIG. 7.

Hereinafter, with reference to a preferred embodiment to which the present invention belongs will be described in more detail.

2 and 3 is a view showing the drilling and reaming (reaming) of a designated portion of the exterior of the concrete structure according to the invention.

In general, after the construction of the concrete structure 100, the worker should check whether the initial freeze caused by the freezing of moisture at the initial stage of curing of the cured concrete. In particular, when the concrete surface is in contact with carbonic acid gas in the air and encounters acid rain several times, the corrosion of the steel is started due to the destruction of the passivation film surrounding the surface of the steel due to the neutralization (carbonation) of the concrete, thereby reducing the life of the concrete. . Therefore, it will be a very important task for the worker to quickly grasp whether the neutralization occurs in the concrete structure 100, and if the neutralization occurs, how much the neutralization depth of the concrete has progressed.

As such, in order to measure the initial freezing and neutralization depth of the concrete, as shown in FIG. 2, the operator determines a specific part of the outer wall of the concrete structure 100 and performs drilling on the corresponding part. The drilling operation may be performed using a fabric mill, such as the drill 10 commonly used in the workshop.

When the drilling operation is completed, the perforated region 50 is generated in the concrete structure 100. However, immediately after the drilling operation, a lot of concrete dust, dust, foreign matters, etc. are accumulated in the perforation region 50. Therefore, the worker performs a reaming process, which is a process of cleaning the perforation region 50 cleanly. As shown in FIG. 3, the reaming operation may use a cleaning device such as the reamer 20 commonly used in the workplace.

Hereinafter, a process of measuring the initial dynamic damage of the concrete structure 100 through the perforation region 50 will be described with reference to FIGS. 4 and 5.

4 is a view showing a state of supplying water to the perforated region of the concrete structure is completed drilling and reaming operation, Figure 5 is inserted into the perforated region of the concrete structure according to an embodiment of the present invention the state of the perforated region Is a view showing an injection device for measuring.

4 and 5, a solution supply device 30 in which water is stored therein is inserted into the perforation region 50. In other words, water is stored in the solution supply device 30, and the water is sprayed into the perforation region 50.

The solution supply device 30 has a diameter smaller than that of the body portion and is positioned at the front end of the body portion and is inserted into the puncturing area 50 and an end portion of the injection portion 31. It is installed in the injection portion 32 to discharge the water in the perforation region (50). For example, a plurality of holes are formed in the injection part 32, and water is supplied to the punching area 50 through the holes. As another example, the injection part 32 is not provided separately, and an example in which a plurality of holes are entirely formed in the injection part 31 so that the entire injection part 31 serves as the injection part.

The solution (water) supply device 30 is configured to continuously supply the same amount of water to the perforated region 50, and is manufactured in the form of a syringe to easily supply water to the perforated region 50. . In addition, a separate pressure device may be additionally installed in the solution supply device 30 so that the same amount of water is continuously supplied to the perforation region 50. For example, the pressure device may be a pump 35. That is, the water continuously provided from the pump 35 may move to the solution supply device 30 along the inflow nozzle 36 and water may be injected into the puncturing region 50. Accordingly, water may be supplied to the perforation region 50 all the time.

As such, when water is continuously supplied to the inside of the perforated region 50 for 24 hours, water permeates the outer diameter of the perforated region 50.

When this process is completed, a lot of water accumulates in the perforation region 50. Therefore, the operator performs a task of removing the water accumulated in the perforation region 50. In this case, the worker may perform a task of removing water accumulated in the perforation region 50 by using a separate suction device. In this way, the injection device 200 configured to correspond to the size of the drilling area 50 is inserted into the drilling area 50 from which water is removed.

As shown in FIG. 5, the injection device 200 is formed in a cylindrical shape and includes a case 215 formed of a transparent material, and a direction in which the case 215 is inserted into the drilling area 50. A rotation drive unit 205 is configured to allow 360 degree rotation.

In general, the case 215 is preferably made of acrylic of a transparent material, but does not exclude that the case 215 is composed of other materials within the range that can achieve the same purpose and function.

Inside the case 215, a camera 211, a lighting device 212, and a scale 213 are configured. The cameras 211 are configured in plural and arranged at equal intervals such that the distance between each camera 211 is constant. In the present invention, the distance between the cameras is preferably about 20 mm, but the distance between the cameras may be 20 mm or less within the range that can achieve the same purpose and function.

An illuminating device 212 capable of emitting light is configured between the plurality of cameras 211 to photograph the inside of the perforated area 50 as an image. In general, the lighting device 212 is preferably configured as an LED device, but may be configured as another light emitting device within a range that can achieve the same purpose and function.

The outer diameter of the case 215 is displayed on the scale portion 213 configured at equal intervals, so that the image taken by the camera 211 and the image captured by matching the scale portion 213 to a certain depth You can check whether it is a video.

As described above, the injection device 200 inserted into the drilling area 50 is rotated 360 degrees by the rotation driving unit 205 installed at the end of the case 215. At this time, the rotation drive unit 205 is rotated by a quarter of a minute, that is, an angle of 90 degrees per minute, so that the image of the inside of the perforated region 50 is photographed as the wheel is rotated every four minutes. In order to facilitate the rotation of the rotation driver 205 and to accurately grasp the rotation angle of the rotation driver 205, a handle part 206 having a '-' shape is added to the side of the rotation driver 205. It may be installed as.

In addition, the injection device 200 measures the dry state of the water permeated into the inner outer diameter of the perforated region 50, and finally to shoot for a total of 6 hours. The image data photographed inside the perforation region 50 is transmitted to and stored in a separately configured recording medium 60, and the image data is analyzed by a separate analysis program.

As shown in the figure, the recording medium 60 may be a notebook computer. However, the type of the recording medium 60 is not limited thereto. For example, the recording medium 60 may be a smartphone, a PDA, a tablet, or the like. The worker may check the initial freeze state of the concrete structure 100 through the recording medium 60.

Based on the measured image data of the dry state of the water permeated into the outer diameter of the perforated region 50, the operator can measure the initial freeze state of the concrete structure 100, the case of the injection device 200 ( Through the scale portion 213 configured in 215, the initial freezing depth can be visually confirmed through the image.

In addition, the neutralization depth of the concrete structure 100 may also be determined using the solution supply device 30 and the injection device 200 described above with reference to FIGS. 4 and 5.

Specifically, the phenolphthalein reagent is stored in the solution supply device 30. That is, the phenolphthalein in the solution supply device 30 is injected into the hole area 50 while the solution supply device 30 is inserted into the hole area 50. At this time, the phenolphthalein solution is composed of 1% by weight of concentration, it is possible to determine the neutralization depth of the concrete structure 100 through the discoloration of phenolphthalein according to the depth of the perforation region (50). In detail, the phenolphthalein injected from the solution supply device 30 penetrates into the outer diameter of the perforation region 50, and the worker measures the neutralization depth of the concrete structure by measuring the discoloration of the phenolphthalein at a predetermined time interval. In this case, whether the phenolphthalein is discolored can be directly confirmed by the recording medium 60.

As described above, the operator can easily measure the neutralization depth of the concrete even with the naked eye through the image data measured by the injection device 200, it is possible to measure the neutralization depth more accurately through a separate analysis program.

Hereinafter, other examples of the injection device for measuring the neutralization depth of the concrete structure 100 will be described further.

6 is a view showing an injection device for measuring the state of the perforated region according to another embodiment of the present invention.

Referring to the drawings, the injection device 300 according to the present embodiment is composed of a cylindrical cylinder body 320 to be inserted into the drilling area 50 of the concrete structure 100. An elastic member 310 is installed at an end of the cylinder body 320 to absorb an impact generated when the end of the cylinder body 320 is in contact with the end of the perforation region 50. That is, an elastic member 310 of rubber material is installed at the front end portion of the cylinder body 320.

In addition, a sensing member 321 is attached to an outer surface of the cylinder body 320 to check the neutralization state of the perforation region 50. The sensing member 321 may be a sheet-based product that can directly contact the outer diameter of the inner surface of the puncturing region 50 to determine the neutralization state of the puncturing region 50 for each depth. It may be a product of the proximity sensor series that can grasp the neutralization state of the perforated region 50 even if it is not in direct contact with the 50. That is, as long as the material can grasp the neutralization state of the perforated region 50, the type of the sensing member 321 is not limited.

The outer surface of the cylinder body 320 is provided with a stopper 330 that can adjust the moving distance of the cylinder body 320. The stopper 330 has a relatively larger diameter than the perforation region 50, and is configured to be movable along an outer surface of the cylinder body 320. That is, the operator may limit the insertion length of the cylinder body 320 by adjusting the position of the stopper 330 in order to more accurately determine the depth of the perforation region 50.

In addition, the rear end portion of the cylinder body 320 is provided with a movement limiting portion 340 for preventing the stopper 330 from falling out of the cylinder body 320. The movement limiting unit 340 is manufactured integrally with the cylinder body 320 but is configured to have a larger diameter than the stopper 330.

According to the injection device 300 configured as described above, the information measured by the sensing member 321 is transmitted to the recording medium 60, the operator through the recording medium 60 to measure the neutralization depth of the concrete structure 10 In addition, the operator may more accurately measure the neutralization depth through a separate analysis program based on the information obtained from the recording medium 60.

As another example, FIGS. 7 and 8 illustrate an injection device according to another embodiment of the present invention. Specifically, FIG. 7 is a view showing an injection device for measuring a state of the perforated area according to another embodiment of the present invention, and FIG. 8 shows whether the concrete structure is neutralized using the injection device shown in FIG. 7. It is a flowchart for explaining the process of determining.

Referring to the drawings, the injection device 400 according to the present embodiment is composed of a sawtooth body 430 is inserted into the drilling area 50, the outer surface is formed in a sawtooth shape. The rear end of the sawtooth body 430 is provided with a body 420 surrounding a portion of the sawtooth body 430. In addition, a seating area 421 is formed in the main body 420, which is a space provided so that the serrated body 430 is movable in the axial direction along the drilling area 50.

Sensors 431 and 432 are provided at the front end of the serrated body 430 to detect the state of the perforation region 50. Specifically, the sensor is installed at the end of the sawtooth body 430 is the first sensor 431 for detecting whether the puncturing area 50 is neutralized and whether the information detected by the first sensor 431 is correct The second sensor 432 is installed in parallel with the first sensor 431 at the rear end of the first sensor 431 so as to check whether or not. That is, when the sawtooth body 430 exits from the seating area 421 and is inserted into the drilling area 50, the first sensor 431 first detects the neutralization state of the drilling area 50. In addition, the neutralization state is further detected by the second sensor 432 with respect to the portion where the detection is completed in the first sensor 431.

That is, when the neutralization test is performed once, the serrated body 430 is inserted into the puncturing area 50 by the length of the first sensor 431, and the neutralization test is performed. As data is transmitted to the recording medium 60, the puncturing area 50 may be further subdivided to perform a neutralization test. In addition, since the second sensor 432 having the same length as the first sensor 431 is installed at the rear end of the first sensor 431, more accurate neutralization data result can be obtained. For example, in the first test of neutralization, the first sensor 431 calculates a neutralization data result value for the first portion of the puncturing area 50. Subsequently, the serrated body 430 is inserted deeper into the puncturing area 50 by the length of the first sensor 431 during the neutralization double inspection. In addition, the first sensor 431 calculates the neutralization data result value for the second part of the puncturing area 50, and the second sensor 432 checks whether the neutralization data result value for the first part is correct. Check whether or not.

Accordingly, the neutralization depth test of the concrete structure 100 can be made more accurately.

In addition, rubber of an elastic material may be installed at an end of the first sensor 431. That is, when the first sensor 431 is in direct contact with the perforation region 50, there is a risk of damage to the sensor. Thus, an elastic member may be installed at the end of the first sensor 431.

In addition, the toothed body 430 is engaged with the gear unit 450 which is a separate configuration from the injection device 400. That is, the gear unit 450 is configured to rotate in engagement with the toothed body 430, and calculates a movement amount of the toothed body 430 and transmits the amount of movement of the toothed body 430 to the recording medium 60. The gear part 450 is supported by the prop 451 not to move.

In addition, the rotation axis of the gear unit 450, the communication with the recording medium 60 to detect the amount of rotation of the gear unit 450 to calculate the moving distance of the toothed body 430 The whole quantity detecting member 455 is provided. That is, the length of the sawtooth body 430 inserted into the drilling area 50 may be measured based on the amount of rotation calculated by the amount of rotation detecting member 455. And, the neutralization depth of the concrete structure 100 can be measured based on such data.

The overall process of measuring the neutralization depth of the concrete structure 100 using the injection device 400 shown in FIG. 7 is shown in FIG. 8.

First, an operator performs drilling and reaming operations on the concrete structure 100 to form a perforated region 50 (S10), and injects a phenolphthalein solution to the perforated region 50 (S20). Next, the worker inserts the injection device 400 which is a concrete neutralization measuring device into the drilling area 50 (S30). At this time, the insertion length of the injection device 400 is inserted only by a predetermined length as the operator wants. The insertion method of the injection device 400 is the toothed body 430 is released from the seating area 421 of the main body 420 in accordance with the rotation of the gear portion 450 is inserted into the drilling area (50). Proceed in such a way. In addition, the preset length is preferably the same as the length of the first sensor 431 installed in the front end of the sawtooth body 430.

When the step S30 is finished, it is examined whether the moving distance of the toothed body 430 of the injection device 400 coincides with the preset length (S40). Whether the moving distance of the sawtooth body 430 matches the preset length may be checked through a rotation amount detecting member 455 installed on the rotation shaft of the gear unit 450. If the values do not match, the recording medium 60 notifies the operator of the abnormal signal (S41). For example, the recording medium 60 may visually signal an abnormal signal through a display or may visually notify an abnormal signal through an alarm signal. When the abnormal signal is sent, the serrated body 430 is returned to the original position in the seating area 421 again (S70).

If the moving distance of the toothed body 430 and the preset length match, it is determined whether the corresponding portion is neutralized by analyzing the result measured by the first sensor 431 (S50). The determination result is transmitted to the recording medium 60 so that the operator can easily check the result.

Next, it is determined whether the elastic member installed at the end of the first sensor 431 is in contact with the perforation region 50 (S60). If it is not in contact, it means that the neutralization test work in the drilling area 50 has not been completed yet. Therefore, the process returns to step S30 again and the steps below S30 are sequentially performed. From this time, in proceeding the neutralization test, the second sensor 432 of the sawtooth body 430 is to confirm the result of the neutralization whether the first sensor 431 has been inspected once again Additionally.

Through such a process, when the elastic member installed at the end of the first sensor 431 comes into contact with the perforation region 50, the serrated body 430 again returns to the original position in the seating region 421. Return to (S70). In addition, the neutralization depth of the concrete structure 10 may be determined based on the neutralization determination data of the perforation region 50 sequentially stored in the recording medium 60.

FIG. 9 is a flowchart illustrating a process of determining whether the concrete structure is initially frozen using the injection device shown in FIG. 7.

FIG. 9 is different in that only water is added in place of the phenolphthalein solution in the contents of FIG. 8, and the same method is used for the remaining measurement method. Therefore, only different parts from FIG. 8 will be described below.

Referring to FIG. 9, the worker injects water into the drilling area 50 where drilling and reaming are completed in order to measure the initial freezing state of the concrete structure 100 (620). As a result, a large amount of water accumulates in the perforation region 50. Therefore, the worker performs the operation of removing the water accumulated in the perforation region 50 (621).

In this way, the injection device 400 is inserted into the perforated region 50 from which the water is removed, and the injection device 400 can determine whether the initial freeze depending on the depth of the concrete structure 50.

As described above, according to the present invention, the concrete initial freeze and neutralization according to each depth by measuring the color change state of the reagent such as water or phenolphthalein to be injected into the perforated concrete structure, the target portion perforated The advantage is that the state can be measured precisely.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below It can be done.

30: solution supply 50: puncture zone
60: recording medium 100: concrete structure
200, 300, 400: injection device 211: camera
212: luminaire 213: graduation
215: case 310: elastic member
320: cylinder body 321: sensing member
330: stopper 420: main body
430: serrated body 431: first sensor
432: second sensor 450: gear portion

Claims (11)

Drilling step for forming a perforated area by a predetermined depth by designating a predetermined position of the outer wall of the concrete structure (100);
A reaming step for smoothly machining the outer diameter of the perforated region 50 formed through the drilling step;
A solution supply step of spraying a solution on the drilled region 50 through the drilling and reaming steps; And
Measured and inserted into the perforated region 50 at a predetermined time interval to measure the solution permeated to the outer diameter of the perforated region 50, the concrete initial freeze, characterized in that it comprises a measuring and recording step of storing the measured data How to measure the neutralization depth.
According to claim 1,
The solution supply step,
Supplying water for 24 hours to the drilling area 50 drilled through the drilling step and the reaming step; And
And after the water supply step is carried out so that water penetrates the outer diameter of the perforated region, removing water into the perforated region.
The method of claim 2,
The measuring and recording step,
The initial stage of the concrete characterized in that the injection device 200 is inserted into the drilling area 50 to determine the initial freeze of the concrete structure by measuring the water soaked into the outer diameter of the drilling area at a predetermined time interval East Sea and neutralization depth measurement method.
According to claim 1,
The solution supply step is a step of spraying phenolphthalein to the perforated region 50 drilled through the drilling step and the reaming step,
In the measuring and recording step, the concrete structure 100 is measured by a predetermined time interval whether the injection device 200 inserted into the puncturing area 50 is neutralized by phenolphthalein penetrating the outer diameter of the puncturing area 50. Steps to determine whether to neutralize according to the depth of the concrete initial freeze and neutralization depth measuring method.
The method according to claim 2 or 4,
The measuring and recording step,
Inserting an injection device (200) provided with a plurality of cameras (211) into the drilling area (50);
Photographing the inside of the drilling area 50 by the camera 211 while the injection device 200 is rotated; And
Method for measuring the concrete initial freeze and neutralization depth comprising the step of transmitting the information photographed by the camera (211) to the recording medium (60).
The method of claim 4, wherein
The measuring and recording step,
Inserting an injection device (300) having a sensing member (321) reacting with phenolphthalein on an outer surface thereof in the puncturing area (50); And
After the predetermined time has elapsed, the method for measuring the concrete initial freeze and neutralization depth comprising the step of transmitting the information on the reaction of the phenolphthalein of the sensing member 321 to the recording medium (60).
The method of claim 4, wherein
The measuring and recording step,
A first step of inserting the injection device 400 into the drilling area 50 by a predetermined length;
A second step of checking whether a moving distance of the injection device 400 matches a preset length; And
If the moving distance of the injection device 400 and the predetermined length is the same, including a third step of determining whether the portion of the puncture region 50 measured by the injection device 400, the neutralization,
The method of measuring the initial freezing and neutralization of concrete, characterized in that the first step through the third step is repeated until the entire puncture region (50) is measured through the injection device (400).
As a measuring device for measuring the initial freeze and the neutralization depth of the concrete structure 100,
A solution supply device 30 capable of continuously injecting a solution into the perforated perforation region 50 of the concrete structure 100;
An injection device (200, 300, 400) inserted into the perforation region (50) to measure the state of the perforation region (50); And
Concrete freeze and neutralization depth measuring apparatus comprising a recording medium 60 for separately storing and analyzing the information measured from the injection device (200, 300, 400).
The method of claim 8,
The injection device 200,
A case 215 formed in a cylindrical shape and made of a transparent material; And
It is installed at one end of the case (215) and the concrete initial freeze and neutralization depth measuring apparatus comprising a rotation drive unit (205) capable of rotating the case (215) 360 degrees.
The method of claim 8,
The injection device 300,
A cylinder body 320 having one or more sensing members 321 attached to an outer surface thereof;
An elastic member 310 installed at an end of the cylinder body 320 to mitigate the impact the cylinder body 320 receives when the cylinder body 320 contacts the distal portion of the perforation region 50; And
It is installed to surround the cylinder body 320, the concrete initial freeze and neutralization depth measuring device, characterized in that it comprises a stopper 330 for limiting the depth of the cylinder body 320 is inserted into the drilling area (50) .
The method of claim 8,
A sawtooth body 430 inserted into the puncturing area 50 and provided with sensors 431 and 432 for detecting a state of the puncturing area 50 at an end thereof;
The main body 420 is installed to surround a part of the outer surface of the serrated body 430 and provides a seating area of the serrated body 430 so that the serrated body 430 is movable along the puncturing area 50. ); And
The initial dynamic damage and neutralization depth of the concrete, characterized in that it comprises a gear portion 450 which rotates in engagement with the sawtooth body 430 and calculates the amount of movement of the sawtooth body 430 and transmits it to the recording medium 60. Measuring device.

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