JP7210870B2 - Compaction control device - Google Patents

Description

The present invention relates to a compaction management device for managing compaction of concrete by a compaction device.

In general, in the method of controlling the height of concrete placement, a worker controls the height of concrete placement in each layer using a measuring instrument such as a scale from above the formwork. It is also known to compact concrete using a distance measuring instrument that measures the distance from the upper surface of concrete (see, for example, Patent Document 1). The device described in Patent Literature 1 can manage the amount of insertion of the vibrator into the concrete.

JP 2012-193601 A

By the way, when building a concrete structure with a height, concrete is divided into multiple layers with a predetermined thickness (for example, about 40 to 50 cm) and poured (placed), and the poured concrete is sufficiently tightened. Hardening to eliminate excess voids and prevent aggregates from settling and separating. In this case, by inserting the vibrator into the lower layer concrete up to a predetermined amount (for example, about 10 cm) and integrating the upper and lower layers of concrete, compaction is achieved between the upper and lower layers of concrete. To prevent the occurrence of initial defects caused by shortages.

However, with the configuration disclosed in Patent Literature 1, it is not possible to manage the amount of insertion of the vibrator into the underlying concrete. Therefore, there is a problem that initial defects caused by insufficient compaction or the like occur between the upper layer concrete and the lower layer concrete.

Therefore, the present invention prevents initial defects that occur between laminated concrete layers, can be used to tightly compact each layer, and can be used at many concrete placement sites by attaching it to the cable part. It is an object of the present invention to provide a compaction management device capable of

In order to achieve the above object, the compaction management apparatus of the present invention is a compaction management apparatus for managing the compaction of concrete by a compaction device, wherein the compaction device includes a vibrating unit that is inserted into the concrete and vibrates. and a cable portion connected to the vibrating portion.

The compaction management device includes a distance measuring means attached to the cable portion for measuring the distance to the upper surface of the concrete, and a predetermined time after the measured value of the distance measuring means reaches a predetermined value. and an informing means for informing that the period has elapsed.

Here, in the compaction management apparatus of the present invention, the notification means may have light emitting means, and the light emitting means may change the light emitting state.

Also, the compaction management device of the present invention can be detachable from the cable portion.

In the compaction management apparatus of the present invention configured in this way, when concrete is poured in layers, initial defects occur due to insufficient compaction or excessive compaction between the upper concrete layer and the lower concrete layer. can be suppressed.

Moreover, the compaction management device of the present invention can be used at many concrete placement sites by attaching it to the cable portion.

Further, in the compaction management apparatus of the present invention, the notification means has light emitting means, and the light emitting means is capable of changing the light emitting state, so that the operator can check the compaction time by the light emitted from the light emitting means. It can be grasped by the state and managed.

Moreover, the compaction management device of the present invention can be detachably attached to the cable section, so that the compaction management device can be used at many concrete casting sites.

1 is a configuration diagram showing an overall configuration regarding placing concrete in Example 1. FIG. FIG. 2 is an explanatory diagram for explaining the electronic bulletin board of Example 1; 1 is a configuration diagram showing the configuration of a compaction management device of Example 1. FIG. 1 is a perspective view showing the configuration of the compaction management device of Example 1 from above. FIG. 1 is a perspective view showing the configuration of the compaction management device of Example 1 from below. FIG. 1 is a block diagram illustrating the configuration of a compaction management system of Example 1. FIG. 4 is a flowchart for explaining the procedure of placing concrete in Example 1. FIG. FIG. 4 is an explanatory diagram for explaining a concrete layer thickness control process and an insertion amount detection process in Example 1; 4 is a flow chart for explaining the flow of an insertion amount detection process and an insertion time management process of Embodiment 1. FIG. FIG. 2 is an explanatory diagram illustrating a power-on state of the compaction management device of Embodiment 1; FIG. 2 is an explanatory diagram for explaining the initial state at the compaction position of the compaction management device of Embodiment 1; FIG. 4 is an explanatory diagram illustrating a state after a predetermined period of time has elapsed at the compaction position of the compaction management device of Example 1;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a best embodiment for realizing a concrete placing method and a compaction management device according to the present disclosure will be described based on Example 1 shown in the drawings.

First, the configuration will be explained.

The concrete placing method and compaction management apparatus in the first embodiment are applied, for example, when constructing a reinforced concrete structure having reinforcing bars 6 as shown in FIG.

Hereinafter, the configuration of the first embodiment will be described by dividing it into "overall configuration", "configuration of compaction management device", "configuration of compaction management system", and "concrete pouring procedure".

[overall structure]
FIG. 1 is a configuration diagram showing the overall configuration relating to placing concrete in Example 1. As shown in FIG. FIG. 2 is an explanatory diagram for explaining the electronic bulletin board according to the first embodiment.

Hereinafter, based on FIG.1 and FIG.2, the whole structure regarding placing of concrete is demonstrated.

Concrete is placed using a compaction device 10, a concrete layer thickness control device 20, and a compaction control device 30, as shown in FIG.

The compaction device 10 includes a vibrator 11 as a vibrating section inserted into concrete, and a cable section 12 connected to the vibrator 11 .

The concrete layer thickness control device 20 includes a laser rangefinder 21 as distance measuring means and an electric bulletin board 23 as display means.

The laser range finder 21 is fixed, for example, to the top of the formwork 5 or the workbench 8 and measures the distance to the upper surface of the concrete C supplied into the formwork 5 .

The laser rangefinder 21 has a transmitter 22 . The transmission unit 22 transmits the measured distance information to the electronic bulletin board 23 .

The electronic bulletin board 23 is installed at a place where the worker M can easily see it. The electronic bulletin board 23 has a receiving section 24 . The receiver 24 receives the distance information transmitted from the transmitter 22 of the laser rangefinder 21 . Information received by the receiving unit 24 is displayed on the electronic bulletin board 23 .

As shown in FIG. 2, the electronic bulletin board 23 displays, for example, measurement time information, information on what layer the supplied concrete is, design information, measurement information, layer thickness information, and the like. Note that compaction position detection information, which will be described later, may be displayed.

The compaction management device 30 is provided on the cable portion 12 of the compaction device 10 so as not to be inserted into the concrete C. As shown in FIG.

Reinforcing bars 6 are arranged vertically and horizontally inside the formwork 5 . Concrete C is divided into multiple layers and supplied to the inside of formwork 5 from a concrete supply hose 7 connected to a concrete supply source such as an agitator vehicle. A workbench 8 is provided above the formwork 5 . A worker M rides on the workbench 8 and operates the compaction device 10 .

[Configuration of compaction management device]
FIG. 3 is a configuration diagram showing the configuration of the compaction management device of the first embodiment. FIG. 4 is a perspective view showing the configuration of the compaction management device of Example 1 from above. FIG. 5 is a perspective view showing the configuration of the compaction management device of Example 1 from below. The configuration of the compaction management device will be described below with reference to FIGS. 3 to 5. FIG.

The compaction management device 30 is detachably attached to the cable section 12 as shown in FIG. As shown in FIGS. 4 and 5, the compaction management device 30 includes a first housing 31, a second housing 32, a hinge 33, an LED 34 as a light emitting means as an example of announcing means, and a distance measuring means. a distance sensor 35, a battery 36, a control board as a control unit 40, a GPS receiving unit 51 as means for acquiring planar position information, and a position information transmitting unit 52.

The first housing 31 and the second housing 32 can be opened and closed via hinges 33 . The first housing 31 and the second housing 32 are covered with covers in order to withstand the ingress of water and impact from the outside.

The LED 34 is composed of a red LED 34a and a green LED 34b. A red LED 34a and a green LED 34b are provided at the top of each housing 31, 32 facing upward. Therefore, with the vibrator 11 inserted into the concrete C, the worker M on the workbench 8 can visually recognize the light from the LED 34 . The red LED 34a and the green LED 34b can be turned on, turned off, blinked, and switched between these times.

The distance sensor 35 uses, for example, an ultrasonic sensor or a capacitance sensor. A distance sensor 35 is provided at the bottom of each housing 31 , 32 . The distance sensor 35 measures the distance to the upper surface of the concrete C supplied.

By the way, there is an infrared sensor as a commonly used distance sensor. When an infrared sensor is used as a distance sensor, there is a problem that an accurate distance cannot be measured due to an outdoor environment with a lot of ambient light or diffused reflection due to the kneading water rising on the upper surface of the concrete.

On the other hand, the ultrasonic distance sensor has a relatively low distance resolution, but was adopted because it is not easily affected by the mixing water. However, considering that the height of the concrete surface, which is not uniform at the time of placing, affects the distance measurement accuracy, the distance may be obtained from the average value of the two ultrasonic sensors.

In addition, although the capacitance-type distance sensor cannot take a long distance from the concrete surface, it can accurately determine the presence or absence of concrete in a non-contact manner. In addition, since the reaction of electrostatic induction differs depending on the substance to be measured, it is possible to distinguish between reinforcing bars and concrete, and to prevent erroneous measurement of distance due to reinforcing bar arrangement.

The battery 36 uses, for example, a 9V dry battery. A battery 36 is arranged inside the second housing 32 . A control board (control unit 40 ) is arranged inside the first housing 31 . A GPS receiver 51 as means for acquiring planar position information is arranged outside the first housing 31 . The GPS receiver 51 receives GPS signals from GPS satellites. The positional information transmitter 52 is arranged outside the first housing 31 . The position information transmission unit 52 transmits to the electronic bulletin board 23 the information that the work was completed within the set compaction time, the information of the compaction position, and the like.

By the way, when used in a building such as construction work or in a mountainous area, GPS (GNSS) signals may be blocked and cannot be received. In that case, the information on the compacted position may be acquired using the radio wave intensity of Wi-Fi, Bluetooth (registered trademark), or the like. Specifically, base stations, access points, beacons, etc. are installed around the concrete placement area, and the position is measured by having workers with sensor bodies and vibrators carry transmitters and receivers and smartphones.

Alternatively, a marker or light emitter may be attached to a worker holding a sensor body or a vibrator, and information on the compacted position may be acquired by setting the area where concrete is placed as an imaging range with an area camera, stereo camera, or the like. . In the case of an area camera, since only two-dimensional positional information is obtained, a marker such as a QR code (registered trademark) is placed in the concrete placement area to specify the position on the image. In the case of a stereo camera, multiple cameras are installed around the concrete placement area to prevent occlusion, and the three-dimensional information obtained by each camera is integrated.

The compaction management device 30 is detachable from the cable section 12 with bolts 37 and nuts 38 .

[Configuration of compaction management system]
FIG. 6 is a block diagram illustrating the configuration of the compaction management system of the first embodiment. The configuration of the compaction management system will be described below with reference to FIG.

The control unit 40 includes a CPU 41 , a RAM 42 , a ROM 43 and a timer 44 .

The CPU 41 is a computing means and controls the operation of the compaction management device 30 as a whole. The RAM 42 is a volatile storage medium from which information can be read and written at high speed, and is used as a working area when the CPU 41 processes information. The ROM 43 is a read-only nonvolatile storage medium. The ROM 43 is preliminarily input with the installation position information of the compaction management device 30, the setting value of the insertion depth of the vibrator 11 into the lower layer concrete C1, and the information of the concrete thickness of each layer.

Here, the mounting position information of the compaction management device 30 is the distance L1 from the tip of the vibrator 11 to the position where the compaction management device 30 is mounted (see FIG. 8). The set value of the insertion depth of the vibrator 11 into the lower layer concrete C1 is the design value insertion depth L2 at which the vibrator 11 is inserted into the lower layer concrete C1 (see FIG. 8). The information on the concrete thickness of each layer is the concrete thickness (thickness H) of each layer calculated based on the measurement information measured by the laser rangefinder 21 (see FIG. 8).

A timer 44 counts the lighting time and flashing time of the LED 34 .

The distance sensor 35 and the GPS receiver 51 are connected to the input port of the controller 40 . An output port of the controller 40 is connected to the LED 34 and the position information transmitter 52 .

The control unit 40 controls lighting, extinguishing, and blinking of the LED 34 based on information from the distance sensor 35 . Based on the information from the GPS receiver 51 , the controller 40 transmits the compaction planar position information to the position information transmitter 52 .

[Concrete placement procedure]
Next, the procedure for placing concrete will be described. FIG. 7 is a flow chart for explaining the concrete placing procedure of the first embodiment.

As shown in FIG. 7, concrete is poured into a "lowermost layer concrete filling process", a "lowermost layer concrete compaction process", an "upper layer concrete filling process", a "concrete layer thickness control process", a "vibrator insertion process", It is carried out through an "insertion amount detection process", a "compaction process", an "insertion time management process", and a "compaction position detection process".

(Bottom layer concrete filling process)
In the lowermost layer concrete filling step, concrete is supplied from the concrete supply hose 7 to the inside of the formwork 5 to fill the lowermost layer concrete C1 (step S1).

(Lowest layer concrete compaction process)
In the bottom layer concrete compaction process, the operator M turns on the compaction device 10, inserts the vibrator 11 into the bottom layer concrete C1, and performs compaction (step S2).

(Upper layer concrete filling process)
In the upper layer concrete filling step, concrete is supplied from the concrete supply hose 7 to the inside of the formwork 5, and the upper surface of the lower layer concrete C1 is filled with the upper layer concrete C2 (step S3).

(Concrete layer thickness control process)
Next, the concrete layer thickness control process will be described. FIG. 8 is an explanatory diagram for explaining the concrete layer thickness control process and the insertion amount detection process of the first embodiment. In addition, in FIG. 8, the concrete supply hose 7 and the reinforcing bar 6 are omitted for convenience of explanation.

In the concrete layer thickness control process, the operator M grasps the information measured by the laser rangefinder 21 from the electric bulletin board 23 and manages the concrete thickness of each layer (step S4). Specifically, as shown in FIG. 8, the laser rangefinder 21 measures the distance to the upper surface of the supplied concrete. This measurement information is transmitted from the transmitter 22 of the laser rangefinder 21 to the electronic bulletin board 23 . The receiving section 24 of the electronic bulletin board 23 receives the information transmitted from the transmitting section 22 of the laser rangefinder 21 . Information received by the receiving unit 24 is displayed on the electronic bulletin board 23 . The electronic bulletin board 23 is provided with a control unit (not shown), and this control unit calculates the concrete thickness of each layer based on the measurement information measured by the laser rangefinder. This calculated information is displayed on the electronic bulletin board 23 . The worker M grasps the concrete thickness of each layer from the information displayed on the electronic bulletin board 23 . Thereby, the worker M manages the concrete thickness of each layer.

That is, as shown in FIG. 8, the worker M manages the distance D1 to the upper surface of the lowermost concrete layer C1 and the distance D2 to the upper surface of the upper concrete layer C2. Therefore, the worker M can manage the concrete thickness of each layer to the thickness H.

(vibrator insertion process)
In the vibrator insertion step, the vibrator 11 is inserted from the upper layer concrete C1 toward the lower layer concrete C2 (step S5).

(Insertion amount detection process)
In the insertion amount detection step (step S6), as shown in FIG. The amount of insertion is detected based on the information of the distance D4 to the upper surface of the concrete C measured by . Specifically, when the vibrator 11 is inserted into the lower layer concrete C1 up to a predetermined amount, the controller 40 turns off the red LED 34a and turns on the green LED 34b. The flow of the insertion amount detection process will be described later.

(Compaction process)
In the compaction process, the operator M turns on the power of the compaction device 10 to perform compaction while the vibrator 11 is inserted into the lower layer concrete C1 up to a predetermined amount (step S7). The timing of turning on the power of the compaction device 10 is not limited to this mode, and for example, the power of the compaction device 10 may be turned on in the process of inserting the vibrator.

(Insertion time management process)
In the insertion time management step, the insertion time in a state where the vibrator 11 is inserted into the lower layer concrete C1 up to a predetermined amount is managed (step S8). Specifically, when the vibrator 11 has been inserted into the lower layer concrete C1 up to a predetermined amount for a predetermined time (for example, 5 seconds, 10 seconds, or 15 seconds), the control unit 40 turns on. The green LED 34b blinks. The flow of the insertion time management process will be described later.

(Compaction position detection process)
In the compaction position detection step, the controller 40 calculates the compacted planar position based on the GPS signal received by the GPS receiver 51 from the GPS satellite (step S9). The compaction planar position information is transmitted from the position information transmitting section 52 to the electronic bulletin board 23 and is received by the receiving section 24 of the electronic bulletin board 23 . The compaction planar position information received by the receiving unit 24 is displayed on the electronic bulletin board 23 .

When using in a building such as construction work or in a mountainous area, it is possible to acquire information on the compacted position by using the radio wave intensity of Wi-Fi or Bluetooth, or use an area camera or stereo camera. You may acquire the information of the compaction position.

Next, the worker M determines whether or not to form an upper layer of concrete on the upper layer of the concrete C2 (step S10). If it is determined to form the upper layer of concrete (YES in step S10), the process returns to step S3. On the other hand, if it is determined not to form the upper layer of concrete (NO in step S10), the concrete placing work is completed and finishing work is started.

Next, the flow of the insertion amount detection process and the insertion time management process will be described. FIG. 9 is a flow chart for explaining the flow of the insertion amount detection process and the insertion time management process of the first embodiment. The flow of the insertion amount detection process and the insertion time management process will be described below with reference to FIG.

As shown in FIG. 9, when the compaction management device 30 is turned on, the controller 40 turns on the red LED 34a (step S11). Next, the controller 40 determines whether or not the distance D4 measured by the distance sensor 35 has reached a predetermined value (step S12). That is, in step S12, it is determined whether or not the vibrator 11 has been inserted into the lower layer concrete C1 by a predetermined insertion amount (for example, 10 cm). If it is determined that the distance D4 measured by the distance sensor 35 has reached a predetermined value (YES in step S12), the process proceeds to step S13. On the other hand, when it is determined that the distance D4 measured by the distance sensor 35 has not reached the predetermined value (NO in step S12), the process returns to step S12.

Next, the controller 40 turns off the red LED 34a and turns on the green LED 34b (step S13). That is, in step S13, it is notified that the vibrator 11 has been inserted into the lower layer concrete C1 up to a predetermined insertion amount (for example, 10 cm).

Next, the controller 40 activates the timer 44 (step S14), and proceeds to step S15. At step S15, the controller 40 determines whether the timer 44 has counted a predetermined count value (eg, 5 seconds, 10 seconds, or 15 seconds). That is, in step S15, it is determined whether or not a predetermined time has passed while the vibrator 11 has been inserted into the lower layer concrete C1 to a predetermined insertion amount. If it is determined that the timer 44 has counted the predetermined count value (YES in step S15), the process proceeds to step S16. On the other hand, when it is determined that the timer 44 has not counted the predetermined count value (NO in step S15), the process returns to step S15.

Next, the control unit 40 resets the timer 44 and blinks the green LED 34b (step S16). Next, the controller 40 determines whether or not the distance D4 measured by the distance sensor 35 is greater than a predetermined value (step S17). That is, in step S17, it is determined whether or not the vibrator 11 has been pulled out of the concrete C. If the distance D4 measured by the distance sensor 35 is greater than the predetermined value (YES in step S17), the process returns to step S11. On the other hand, if the distance D4 measured by the distance sensor 35 is smaller than the predetermined value (NO in step S17), this process ends.

Next, the action will be explained.
[ Other characteristic functions of the compaction management device] will be described separately.

[Comparative effect of concrete placing method]
For example, a comparative example is a case where the concrete thickness of each layer is not controlled.

In the case of the comparative example, it is unclear whether the concrete of each layer is sufficiently compacted, and it is impossible to manage the amount of insertion of the vibrator into the concrete of the lower layer. Therefore, there is a problem that an initial defect caused by insufficient compaction or the like occurs between the upper layer concrete and the lower layer concrete.

On the other hand, in Example 1, in a concrete placing method having an upper layer concrete filling step of filling the upper surface of the filled lower layer concrete C1 with the upper layer concrete C2, concrete layer thickness management for managing the thickness of the upper layer concrete an insertion step of inserting the vibrator 11 from the upper layer concrete C2 toward the lower layer concrete C1, and an insertion amount detection step of detecting that the vibrator 11 has been inserted into the lower layer concrete C1 to a predetermined insertion amount. , and a compaction step in which the vibrator 11 vibrates while being inserted to a predetermined insertion amount (FIG. 8).

Thereby, the worker M can insert the vibrator 11 into the lower layer concrete C2 up to an appropriate amount. Therefore, the space between the upper layer concrete C2 and the lower layer concrete C1 can be reliably compacted, and the occurrence of initial defects caused by insufficient compaction or the like can be suppressed.

[Other Characteristic Actions of Concrete Placement Method]
Example 1 includes a compaction time management process for managing the compaction process time (Fig. 9).

As a result, compaction time can be managed, and excessive or insufficient vibration can be avoided. Therefore, in addition to improving the solidity of each layer of concrete, when concrete is poured in layers, initial defects occur due to insufficient or excessive compaction between the upper layer concrete C2 and the lower layer concrete C1. can be suppressed.

Embodiment 1 includes a compaction position detection step for detecting the compaction position of the concrete (Fig. 6). This makes it possible to grasp the compacted position. Therefore, insufficient compaction can be eliminated.

[Comparative action of compaction management device]
For example, a comparative example is a case where the time for inserting the vibrator into concrete is not managed.

In the case of the comparative example, there is a risk that the vibrator will apply excessive vibration to the concrete. As a result, material segregation occurs in which the distribution of the constituent materials of the concrete becomes non-uniform. Therefore, when concrete is poured in layers, there is a problem that initial defects occur due to excessive compaction between the upper layer concrete and the lower layer concrete. On the other hand, there is a risk that the vibrator will not provide enough vibration to the concrete. Therefore, there is a problem that initial defects occur due to insufficient compaction.

On the other hand, in the first embodiment, in the compaction management device 30 that manages the compaction of concrete by the compaction device 10, the compaction device 10 includes a vibrator 11 that is inserted into the concrete C and vibrates, and the vibrator 11 a distance sensor 35 that is attached to the cable portion 12 and measures the distance to the upper surface of the concrete C; and an LED 34 for notifying that the time has elapsed (FIG. 9).

Here, the characteristic operation of the compaction management device of the first embodiment will be described. FIG. 10 is an explanatory diagram for explaining the power-on state of the compaction management device of the first embodiment. FIG. 11 is an explanatory diagram for explaining the initial state at the compaction position of the compaction management device of the first embodiment. FIG. 12 is an explanatory diagram illustrating a state after a predetermined period of time has passed at the compaction position of the compaction management device of the first embodiment. Characteristic actions of the compaction management device will be described below by dividing into "power-on state", "initial state at the compaction position", and "state after a predetermined period of time at the compaction position".

(power on state)
As shown in FIG. 10, when the compaction management device 30 is turned on, the red LED 34a lights up. Thereby, the operator M can confirm that the power of the compaction management device 30 is turned on.

(Initial state at compaction position)
As shown in FIG. 11, when the compaction device 10 is inserted into the concrete C and reaches a predetermined position where the compaction device 10 is to be compacted, the green LED 34b lights up. Thereby, the worker M can confirm that the vibrator 11 has been inserted into the concrete C to a predetermined position where the concrete is compacted.

(State after a specified period of time has passed at the compaction position)
As shown in FIG. 12, the green LED 34b blinks after a predetermined time has passed after the concrete C has been inserted to a predetermined compaction position. Thereby, the worker M can confirm that compaction has been carried out for a predetermined period of time.

As a result, compaction time can be managed, and excessive or insufficient vibration can be avoided. Therefore, when concrete is poured in layers, initial defects due to insufficient compaction or excessive compaction can be suppressed between the upper concrete layer and the lower concrete layer.
Insufficient compaction can also be avoided.

[Other characteristic functions of the compaction management device]
In Embodiment 1, the notification means has an LED 34, and the LED 34 can change its light emitting state (FIGS. 10 to 12).
Thereby, the light emission state of the LED 34 can be changed depending on the compaction time. Therefore, the operator M can grasp the compaction time from the light emission state of the LED 34 and can manage the compaction time.

In Example 1, the compaction management device 30 is detachable from the cable section 12 (Fig. 4).
Thereby, the compaction management device 30 can be attached to the existing compaction device 10 . Therefore, the compaction management device 30 can be used at many concrete placement sites.

The concrete placing method and compaction management device of the present disclosure have been described above based on the first embodiment. However, the specific configuration is not limited to the first embodiment, and design changes and additions are permitted as long as they do not deviate from the gist of the invention according to each claim of the scope of claims.

In the first embodiment, an example of using the ultrasonic or capacitive distance sensor 35 as the distance measuring means is shown. However, the distance measuring means is not limited to this aspect. Moreover, it is desirable that the distance measuring means can measure the distance from the compaction control device to the upper surface of the concrete without being affected by the reinforcing bars.

In Example 1, an example in which the laser rangefinder 21 is used as the distance measuring means is shown. However, the distance measuring means is not limited to this aspect.

In Example 1, an example in which the notification mode is changed by lighting or blinking the red LED 34a or the green LED 34b was shown. However, the present invention is not limited to this mode, and LEDs of different colors may be used, or other patterns may be used for notification.

In Example 1, an example in which the notification means is the LED 34 as a light emitting means is shown. However, the notification means may be a sound output device such as a speaker.

In Example 1, the concrete placing method and the compaction management device are applied to a reinforced concrete structure having reinforcing bars. However, the concrete placing method and compaction management device can also be applied to concrete structures that do not have reinforcing bars.

10 compaction device 11 vibrator (an example of a vibrating part)
12 Cable section 30 Compaction management device 34 LED (an example of notification means)
35 distance sensor (an example of distance measuring means)
C1 Lower layer concrete C2 Upper layer concrete

Claims (1)

A compaction management device for managing compaction of concrete by a compaction device,
For the compaction device having a vibrating part that is inserted into the concrete and vibrating, and a cable part that is connected to the vibrating part,
a housing detachably attached to the cable portion;
distance measuring means arranged in the housing for measuring a distance to the upper surface of the concrete;
an informing means arranged in the housing for informing that a predetermined time has elapsed since the measured value of the distance measuring means reached a predetermined value ;
The notification means is light emitting means provided on the upper part of the housing and emitting light upward,
A compaction management device, wherein the light emitting means is capable of changing the light emitting state.

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