KR102210592B1 - Assistance apparatus for measuring strength or crack of concrete using ultrasonic pulse - Google Patents

Abstract

The present invention relates to an auxiliary device for measuring strength or cracks of concrete using ultrasonic waves, capable of increasing measurement reliability as well as workability in a field. The auxiliary device of the present invention comprises: a horizontal support provided as a bar- or rod-shaped body; a reference member having a first probe mounting unit; a moving member having a second probe mounting unit; a rotation adjusting means coupled to adjust rotational movement in a vertical direction with respect to the horizontal support; and a support member for supporting the rotation adjusting means in a downward direction.

Description

Auxiliary device for measuring concrete strength or crack using ultrasonic waves {ASSISTANCE APPARATUS FOR MEASURING STRENGTH OR CRACK OF CONCRETE USING ULTRASONIC PULSE}

The present invention relates to an auxiliary device for measuring concrete strength or crack using ultrasonic waves, and more particularly, by providing and utilizing a rotation adjusting means, measuring strength or crack in response to various structures of various concrete structures having a vertical, horizontal or inclined structure The present invention relates to an auxiliary device for measuring concrete strength or cracks using ultrasonic waves that supports this and improves workability in the field and increases measurement reliability.

In general, the ultrasonic method, one of the non-destructive testing methods of various concrete structures, measures the time of ultrasonic waves propagating through the concrete and converts it to speed, and then measures the dynamic properties, strength, crack depth, and internal defects of the concrete from this value. That's how to do it.

This ultrasonic method selects a measuring point on the concrete surface, avoiding the place where thick aggregates are exposed, reinforced bars, corners, etc., and removes impurities and plaster on the surface using a grinder, and then there is no void between the measuring surface. Apply grease, etc. to prevent it, and make it close enough to the measuring surface by contacting the sending and receiving probes.

At this time, the sending and receiving probes set the initial value using the reference bar, and then the sending and receiving probes are spaced at the point of the concrete surface and placed in close contact. Measure the strength, etc. for the side point area.

Here, one of the sending and receiving probes is moved at 10cm intervals compared to the fixed point reference, and the strength of the concrete for each point is measured and investigated using ultrasonic waves while changing the point of the point. This is used for structural safety diagnosis. Are doing.

However, when measuring the strength or crack of concrete by the conventional ultrasonic method, an ultrasonic flaw detector is used, but the sending and receiving probes connected to the ultrasonic flaw detector are respectively attached to both hands and maintained at a certain distance to compare any one to the reference point. It has to be arranged and fixed in close contact with the concrete surface, which is a stationary point where the distance is maintained, and it is troublesome and inconvenient to keep the contact and fixed state of the sending and receiving probes until the measurement by sending and receiving ultrasonic waves. There was this.

In particular, when the concrete measurement part is on the ceiling surface rather than the wall, there is a difficulty in properly contacting the sending and receiving probes to the concrete surface and maintaining them, and it is not possible to apply uniform pressure to the sending and receiving probes. As a problem, there was a problem of increasing the measurement error when measuring the strength or crack of the concrete side and a problem of poor measurement reliability.

In addition, in the related art, it has been difficult to measure the strength in correspondence with a concrete surface of a vertical surface, a horizontal surface, or an inclined surface structure, and there is a problem in that workability is deteriorated according to the strength measurement.

On the other hand, when looking at the prior art document related to the measurement aid for ultrasonic measurement using the ultrasonic method on the concrete side, Korean Patent No. 10-1248444 (Patent Document 1) says "The piston rod for pumping and discharging grease to the outside is A piston plate protruding and integrally connected to the piston rod to pressurize grease is provided inside, and a grease storage cylinder is provided in a structure with a grease discharge port formed at one side of the lower end and integrally mounted on the upper surface of the support frame; A fixed clamp integrally mounted on the bottom surface to clamp the fixed transducer; a handle integrally formed at the other end of the supporting frame; extending integrally while having a predetermined length on one side of the supporting frame, A sliding rail in which a ruler at intervals of 10 cm indicating the moving distance of the moving transducer is engraved; a moving clamp that is slidably fastened to a rail groove of the sliding rail to clamp the moving transducer; and integrally with one side of the moving clamp And a grease spraying nozzle connected to the; One end is connected to the grease outlet of the grease reservoir, and the other end is a concrete ultrasonic measurement aid comprising a flexible tube connected to the grease spraying nozzle.

In addition, in Korean Patent Registration No. 10-1819032 (Patent Document 2), "a sender adapter to which a transmitting probe is fixed; a receiver adapter horizontally spaced from the sender adapter and to which the receiving probe is fixed; and the sender adapter, and A distance adjusting unit in which the receiver adapter is coupled in a sliding manner; wherein one end and the other end in a direction orthogonal to a direction in which the transmitting probe and the receiving probe are accommodated are mutually penetrated to adjust the distance It proposes and discloses a "concrete ultrasonic measuring auxiliary device including a sliding part coupled to the part in a sliding manner."

In addition, in Korean Patent Registration No. 10-2089901 (Patent Document 3), "the oscillator and the receiver are electrically connected to the measuring device by a first cable and a second cable, respectively, and the oscillator is controlled by a first elastic means. 1 is connected to the pressing unit, the receiver is connected to the second pressing unit by a second elastic means, a first pressing unit is provided above the first pressing unit, and a second pressing unit is provided above the second pressing unit And connected to the first pressing unit by placing a first stick unit under the first pressing unit, and connected to the second pressing unit by placing a second stick unit under the second pressing unit, and the first pressing unit , The oscillator is located inside the first support part, the second pressing part, the receiver is located inside the second support part, and at least one first guide part is provided on the inner surface of the first support part, and the first At least one first groove portion is provided on the outer surface of the pressing portion, the first guide portion moves along the first groove portion, and at least one second guide portion is provided on the inner surface of the second support portion, and the second pressure An ultrasonic measuring aid for measuring cracks in a concrete structure moving along the second groove by having at least one second groove on the outer surface of the unit is proposed and disclosed.

However, the above Patent Documents 1, 2, and 3 can be said to have a difference in the technical configuration and usage method from the present invention proposed below.

Korean Patent Publication No. 10-1248444 Republic of Korea Patent Publication No. 10-1819031 Korean Patent Publication No. 10-2089901

The present invention solves the above-described conventional problems and was conceived in consideration thereof, and by using a rotation adjusting means, it is possible to measure strength or crack in response to various structures of various concrete structures having a vertical, horizontal or inclined structure. It is an object of the present invention to provide an auxiliary device for measuring concrete strength or cracks using supported ultrasonic waves.

The present invention allows the sending and receiving probes to be used for ultrasonic concrete strength measurement to maintain the concrete surface side close contact and fixed state, and the problem of increasing the measurement error when measuring the strength or crack of the concrete side and the problem of poor measurement reliability. It is an object of the present invention to provide an auxiliary device for measuring concrete strength or crack using ultrasonic waves that can be improved.

An object of the present invention is to provide an auxiliary device for measuring concrete strength or crack using ultrasonic waves so that a simple and accurate position can be displayed on a point portion of concrete for strength or crack measurement by mounting and utilizing a laser point.

Concrete strength or crack measurement aid device using ultrasonic waves according to the present invention for achieving the above object measures the strength or crack of the concrete measurement site by passing ultrasonic waves in a state in which the ultrasonic transmitter and receiver are in contact with the concrete surface. In the auxiliary apparatus for measuring concrete strength or crack using ultrasonic waves for use, comprising: a horizontal support having a predetermined length, but having a point at intervals of 10 cm on the upper surface and provided with a rod-shaped body; A reference member fixedly coupled on the horizontal support or supported and coupled to be movable on the horizontal support, and having a first probe mounting portion for fixedly mounting a receiving probe; A movable member that is supported and coupled to be position movable on the horizontal support, is spaced apart from the reference member, and has a second probe mounting portion for fixedly mounting an outgoing probe; It is coupled to adjust the rotational movement in the vertical direction with respect to the horizontal support, and rotation adjustment to adjust the direction of the sending and receiving probes in correspondence with the concrete surface of the vertical, horizontal, or inclined structure by adjusting the rotation angle of the horizontal support. Way; And a support member that supports the rotation adjustment means in a downward direction and enables installation on the ground at a measurement place with respect to the measurement auxiliary device.

In addition, in the present invention, more various features and embodiments may exist, and various features and embodiments will be described in detail below.

According to the present invention, by providing and utilizing the rotation adjusting means, it is possible to support to conveniently perform strength or crack measurement in response to various structures of various concrete structures such as vertical, horizontal, or inclined structures, and for receiving and outgoing probes It is possible to increase the adhesion to the side of the measuring point of the unit, improve workability in the field, as well as achieve the usefulness of increasing the measurement reliability.

According to the present invention, it is possible to achieve the usefulness of displaying a simple and accurate position on a point portion of concrete for strength or crack measurement by mounting and utilizing a laser point.

According to the present invention, it is possible to maintain the contact state and fixed state of the concrete surface side to the sending and receiving probes used for ultrasonic concrete strength measurement, and provide a uniform adhesion force during the measurement time. It is possible to reduce errors, and through this, it is possible to achieve usefulness that can increase measurement reliability.

1 is a perspective view showing a concrete strength or crack measurement auxiliary device using ultrasonic waves according to an embodiment of the present invention.
2 is a front view showing a concrete strength or crack measurement auxiliary device using ultrasonic waves according to an embodiment of the present invention.
Figure 3 is a detailed view showing the main part of the auxiliary apparatus for measuring concrete strength or crack using ultrasonic waves according to an embodiment of the present invention.
FIG. 4 is a view showing a state in which a probe is in close contact with a concrete surface by using a rotation adjusting means in an auxiliary device for measuring concrete strength or crack using ultrasonic waves according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating a state of use of indicating a location of a point on a concrete surface as an object by using a laser pointer in an auxiliary apparatus for measuring concrete strength or crack using ultrasonic waves according to an embodiment of the present invention.

A preferred embodiment of the present invention will be described with reference to the accompanying drawings, and it will be possible to better understand the objects and configurations of the present invention, and features thereof, through such detailed description.

As shown in Figures 1 to 5, the concrete strength or crack measurement auxiliary device 100 using ultrasonic waves according to an embodiment of the present invention. It is a measurement aid for measuring the strength or crack of the measuring site of concrete by passing ultrasonic waves in the state of contacting the ultrasonic transmitter (1) and receiver (2) with the concrete surface to measure the ultrasonic transmission speed or time. Suggest.

As shown in Figures 1 to 5, the concrete strength or crack measurement auxiliary device 100 using ultrasonic waves according to an embodiment of the present invention. It includes a horizontal support 110, a reference member 120, a moving member 130, a rotation adjustment means 140, and a support member 150.

In addition, it may further include a laser pointer 160 for use in displaying the side position of the point portion of the concrete.

The horizontal support 110 is provided as a rod-shaped body having a predetermined length, and the measuring points 111 are displayed at intervals of 10 cm on the upper surface.

The measuring point 111 allows the moving member 130 to be conveniently and accurately moved and used at 10 cm intervals while the reference member 120 is fixed to the reference point on the horizontal support 110.

At this time, the measuring point 111 may be provided in the form of a fastening hole by drilling a hole other than a scale type or an indication type mark. Through this, the reference member 120 and the moving member 130 together with the point mark It can be configured to be used for fixing the position on the horizontal support 110.

A mounting hole 112 for inserting and fixing the laser pointer 160 may be provided in front of the horizontal support 110 at 10 cm intervals.

The reference member 120 is fixedly coupled to the horizontal support 110 or supported and coupled to the position movable on the horizontal support 110, and a first probe mounting portion 121 for fixing and mounting the receiving probe 2 Includes.

The first probe mounting unit 121 may be provided to fix the receiving probe 2 having the shape of a circular block body by inserting it in the rear direction or by inserting it in the upper direction.

The reference member 120 is a moving body 122 is supported and coupled on the horizontal support so as to be slidable and fixed on the horizontal support 110, and is positioned on the upper surface of the moving body to fix and mount the receiving probe 2 It may be provided in a form in which the first probe mounting portion 121 is integrally coupled.

A fixing hole is formed in the moving body 122, and the position can be fixed by fastening a fixing bolt or a fixing pin in a matched state by matching it with the point 111 having a fastening hole structure of the horizontal support 110. have.

The movable member 130 is supported and coupled to be movable in position on the horizontal support 110, is spaced apart from the reference member 120, and a second probe mounting part 131 for fixing and mounting the sending probe 1 Includes.

The second probe mounting part 131 may be provided to be fixedly mounted by inserting and fitting the outgoing probe 1 having the shape of a circular block body from the rear direction or by inserting and fitting from the upper direction.

The moving member 130 is a moving body 132 is supported and coupled on a horizontal support so as to be able to slide and fix on the horizontal support 110, and is positioned on the upper surface of the moving body to fix and mount the outgoing probe 1 It may be provided in a form in which the second probe mounting portion 131 is integrally coupled.

Here, a fixing hole is formed in the moving body 132, and a fixing bolt or a fixing pin is fastened in a matching state by matching it with the point 111 having a fastening hole structure of the horizontal support 110. Can be fixed.

In the present invention, as an example, an opening 113 having a structure that penetrates up and down in the longitudinal direction of the horizontal support 110 is formed, and the moving bodies 122 and 132 are inserted and arranged in the opening 113 The furnace reference member 120 and the moving member 130 may each be provided to be slidable.

Here, a rubber compression packing (not shown) is mounted on the first probe mounting portion 121 on the side of the reference member 120 and the second probe mounting portion 131 on the moving member 130 side, respectively, and exposed in the inward direction. It is preferable that the receiving probe 2 and the outgoing probe 1 are mounted and fixed so as to prevent slipping when used for measurement and to ensure measurement stability.

The rotation adjustment means 140 is coupled to adjust the rotational movement in the vertical direction with respect to the horizontal support 110, through which the first probe mounting portion 121 and the moving member 130 of the reference member 120 ) Can be freely adjusted so that the cross section of the second probe mounting portion 131 side faces a concrete surface having various structures, and ultimately, the cross-sections of the sending probe (1) and the receiving probe (2) are closely aligned with the concrete point. It is a component that supports easy contact and fixed arrangement.

The rotation adjustment means 140 is a component for adjusting the rotation angle by inducing the rotation of the horizontal support 110, in response to a concrete surface having various structures such as a vertical surface, a horizontal surface, or an inclined surface structure, the transmission probe (1) It is a configuration to adjust their direction so that the front end surface of the and receiving probe (2) faces.

The rotation adjustment means 140 includes a rotation assembly 141 located at the lower side of the horizontal support 110 and fixedly coupled, and a rotation shaft located at the center of both sides or the lower center of the rotation assembly 141 and fixedly coupled ( 142), a rotation angle adjustment handle 143 connected to one end of the rotation shaft 142 to adjust a rotation angle in the vertical direction with respect to the rotation assembly 141, and the rotation angle adjustment handle 143 It includes a fixing portion provided to fix the rotation angle in the current adjusted state as it is.

The fixing part is a circular plate that is located between the rotation shaft 142 and the rotation angle adjustment handle 143 but is coupled to the support member 150 and is fixedly arranged, and on the circular plate in an arc direction or a circumferential direction. On the fixing plate 144 in a state in which the rotation angle of the rotation assembly 141 is adjusted through the fixing plate 144 in which a plurality of fixing holes 144a are continuously arranged in the) direction and the rotation angle adjustment handle 143 It includes a fixing pin 145 for fixing the rotation angle adjustment handle 143 by being inserted into any one fixing hole (144a) formed.

In this case, a pin insertion hole is formed in the rotation angle adjustment handle 143 so that the fixing pin 145 is inserted and fixed from the outside of the rotation angle adjustment handle 143 with respect to the fixing pin 145.

Here, the fixing plate 144 may be provided with a goniometer displayed on the outer surface to more precisely adjust the rotation angle according to various formation structures (for example, a vertical surface, a horizontal surface, or an inclined surface) of the target concrete surface. .

The support member 150 is a component that supports the rotation adjustment means 140 in a downward direction, and enables ground installation and setting for the measurement auxiliary device 100 at a measurement location.

The support member 150 is provided as a square frame portion for the lower portion 152 to secure stability according to the ground installation of the measurement auxiliary device 100, and formed in a multi-stage structure with respect to the upper portion 151 to enable height adjustment. It is desirable to have.

A fastening hole is formed on the four sides of the lower surface of the square frame, and a fastening fixing pin 170 of a straight or wedge-shaped structure is fastened to each of the fastening holes so as to protrude downward, thereby providing a fastening fixing pin 170. By inserting and fixing on the ground, it can be configured to improve fixing power and support when using the measurement auxiliary device 100 side.

Here, the support member 150 may be used by fastening a wheel portion having a locking device in a state in which the fastening fixing pin 170 is separated from a fastening hole formed in the square frame portion, and through this, a measurement auxiliary device ( It can also be configured to improve mobility and work convenience in the field for 100).

In addition, the support member 150 displays a scale in the longitudinal direction on the outer surface of the upper portion 151 provided to be adjustable in height, so that accuracy can be increased when adjusting the height.

In addition, the support member 150 is provided with at least one ring portion such as a hook, so that after the measurement operation is finished, a grease removal tool for scraping or polishing the grease applied to secure the adhesion of the measurement sensor to the concrete surface or Remove grease removal device and make it usable.

At this time, a crack measurer may be attached to the ring portion provided in at least one or more on the support member 150 and used to simply measure the degree of cracking on the concrete side.

The laser pointer 160 is located on the front surface of the horizontal support 110 and is mounted to maintain 10 cm intervals based on the distance between the center points, and directs a laser beam toward the concrete surface as an object for strength or crack measurement. It is a component to be used to indicate the location of the station by irradiation.

The laser pointer 160 may be mounted in the form of being inserted using a plurality of mounting holes 112 formed at 10 cm intervals located on the front side of the horizontal support 110.

It is preferable that the laser pointer 160 and the mounting hole 112 are arranged at intervals of 6 or more so as to secure a measurement distance of 50 cm or more so as to be suitable for the intensity investigation and evaluation of the ultrasonic method according to KS F 2731.

The laser pointer 160 may be assembled, coupled or separated as necessary on a plurality of mounting holes 112 formed on the front surface of the horizontal support 110.

That is, the laser pointer 160 is provided to be detachable on the horizontal support 110.

In addition, the laser pointer 160 is equipped with a magnification lens at the tip from which the laser beam is emitted so that the linear laser beam is irradiated to the concrete surface by adjusting the magnification of the laser beam. At the same time, it is possible to provide convenience according to the work of applying grease to the point area.

Here, when the laser pointer 160 is mounted with a magnification lens to expand the diameter of the linear laser beam, it is preferable to expand the diameter to a size corresponding to the diameter of the measuring sensor.

The state of use of the concrete strength or crack measurement aid 100 using ultrasonic waves according to the present invention having the above-described configuration will be described as follows.

First, in a state in which the reference member 120 and the moving member 130 are moved at one point so as not to cover the plurality of mounting holes 112 formed on the front side of the horizontal support 110, a plurality of mounting holes ( 112) to insert and fix the laser pointer 160, respectively.

In this way, in the state where the laser pointer 160 is inserted and fixed on the horizontal support 110, the measurement aid 100 is arranged to face the target concrete surface (C), and then irradiated on the concrete surface (C) at 10 cm intervals. Using the laser beam, mark points on the concrete surface (C) at 10cm intervals and apply grease.

At this time, for the laser pointer 160, the rotation angle with respect to the rotation assembly 141 is rotated by rotating the rotation adjustment means 140 side rotation angle adjustment handle 143 in the state of being inserted and fixed on the horizontal support 110 By adjusting the direction and spaced so that the front of the horizontal support 110 faces the target concrete surface, the pin insertion hole of the rotation angle adjustment handle 143 and the fixing hole 144a of the fixing plate 144 are matched. By inserting and fixing the fixing pin 145 in the state, the rotation angle of the horizontal support 110 side is fixed.

That is, through the rotation adjustment means 140, the front of the horizontal support 110 faces the concrete surface (C) in accordance with the various formation structures (for example, a vertical surface, a horizontal surface, or an inclined surface) of the concrete surface (C). can do.

After marking the location of the measuring point at 10cm intervals and applying grease to the concrete surface of the object using the laser pointer 160, the reference member 120 having the receiving probe 2 mounted on the horizontal support 110 In addition to the fixed arrangement at the reference point, the moving member 130 on which the outgoing probe 1 is mounted is placed at 10 cm intervals and then fixed.

Subsequently, the cross section of the receiving probe 2 and the transmitting probe 1 in a state of being spaced and fixed in the measurement auxiliary device 100 is brought into contact with and in close contact with the point of the concrete surface C as the object, and then an ultrasonic signal is flowed. By sending, you can measure the strength or crack status of the measuring point display part of the target concrete surface (C).

And, while moving the moving member 130 on the horizontal support 110 at 10cm intervals, the receiving probe 2 and the sending probe 1 are in close contact with the point of the concrete surface. The cracks can be measured continuously every 10 cm.

Accordingly, through the auxiliary device 100 for measuring concrete strength or crack using ultrasonic waves according to the present invention, a rotation adjusting means 140 is provided and utilized to respond to various structures of various concrete structures such as vertical, horizontal, or inclined structures. Since the facing arrangement is possible, it can be supported to conveniently perform strength or crack measurement, and it can increase the adhesion of the concrete to the receiving and outgoing probes on the side of the stationary point, and improve workability in the field compared to the previous one. Of course, it can provide an advantage that can increase measurement reliability.

The above-described embodiment is merely a description of a preferred embodiment of the present invention, and is not limited to this embodiment, and various modifications and variations are made by those skilled in the art within the spirit and scope of the present invention. It will be said that this can be achieved, and it will be said to fall within the scope of the technical rights of the present invention.

110: horizontal support 111: station
112: mounting hole 120: reference member
121: first probe mounting portion 130: moving member
131: second probe mounting portion 140: rotation adjustment means
150: support member 160: laser pointer

Claims (7)

In the concrete strength or crack measurement auxiliary device using ultrasonic waves for use in measuring the strength or crack of the concrete measurement site by passing ultrasonic waves while the ultrasonic transmitting and receiving probes are in contact with the concrete surface,
A horizontal support having a certain length, but having a point on the upper surface at 10cm intervals, and provided as a rod-shaped body;
A reference member fixedly coupled to the horizontal support or support-coupled so as to be movable on the horizontal support, and having a first probe mounting portion for fixedly mounting the receiving probe;
A moving member that is supported and coupled to be position movable on the horizontal support, is spaced apart from the reference member, and has a second probe mounting portion for fixing and mounting an outgoing probe;
It is coupled to adjust the rotational movement in the vertical direction with respect to the horizontal support, and rotation adjustment to adjust the direction of the sending and receiving probes in correspondence with the concrete surface of the vertical, horizontal, or inclined structure by adjusting the rotation angle of the horizontal support. Way;
A support member that supports the rotation adjustment means in a downward direction and enables installation of the ground at a measurement location with respect to the measurement auxiliary device; Including,
The rotation adjustment means,
A rotating assembly that is fixedly coupled to the lower side of the horizontal support;
A rotation shaft fixedly coupled by being positioned in the center of both sides or the lower center of the rotation assembly;
A rotation angle adjustment handle connected to one end of the rotation shaft and provided to adjust a rotation angle in the vertical direction with respect to the rotation assembly;
A fixing part provided to fix the rotation angle adjustment handle so as to maintain the rotation angle in the currently adjusted state; Auxiliary device for measuring concrete strength or cracks using ultrasonic waves, comprising: a. delete The method of claim 1,
The fixing part,
It is a circular plate that is located between the rotation shaft and the rotation angle adjustment handle, and is fixedly arranged by being coupled to the support member, and there are a number of fixing holes continuously arranged in a circular arc direction or a circumferential direction on the circular plate. A fixed plate formed;
A fixing pin for fixing the rotation angle adjustment handle by inserting it into any one fixing hole formed on the fixing plate in a state in which the rotation angle of the rotation assembly is adjusted through the rotation angle adjustment handle; Including,
A concrete strength or crack measurement aid using ultrasonic waves, characterized in that a pin insertion hole is formed in the rotation angle adjustment handle to insert and fix the fixing pin in the outer direction of the rotation angle adjustment handle with respect to the fixing pin. The method of claim 1,
A plurality of laser pointers positioned on the front side of the horizontal support and mounted to maintain 10 cm intervals, and configured to display a position of a point by irradiating a laser beam toward the concrete surface; Auxiliary device for measuring concrete strength or cracks using ultrasonic waves, characterized in that it further comprises. The method of claim 4,
A plurality of mounting holes are formed at 10 cm intervals located on the front side of the horizontal support, and 6 or more are arranged at intervals to secure a measurement distance of 50 cm or more,
Concrete strength or crack measurement auxiliary device using ultrasonic waves, characterized in that the laser pointer is configured to be assembled, coupled or separated on the mounting hole on the horizontal support side. The method of claim 1,
The support member,
For the stability according to the ground installation of the measurement auxiliary device, it is provided with a square frame part in the lower part, and it is formed in a multistage structure in the upper part so that the height can be adjusted.
Fastening holes are formed on four sides of the lower surface of the square frame, and fastening fixing pins are fastened to each of the fastening holes so as to protrude downward. Auxiliary device for measuring concrete strength or cracks using ultrasonic waves, which is configured to improve support. The method of claim 1,
Concrete strength using ultrasonic waves, characterized in that the first probe mounting part and the second probe mounting part are respectively equipped with rubber compression packings to prevent slippage and ensure measurement stability when mounting and fixing the receiving and outgoing probes or using them for measurement. Or a crack measurement aid.

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