JP2018123512A - Concrete placing management method, management device, and structural skeleton construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for detecting and managing the filling state of fresh concrete during placement without external heating.SOLUTION: A concrete placing management method in which a concrete placing state is detected based on a temperature distribution that appears on a concrete form external surface obtained from observation of the concrete form external surface during concrete placing using a visible light camera and an infrared camera.SELECTED DRAWING: Figure 8

Description

  The present invention belongs to the technical field related to concrete placement.

When constructing a concrete structure, ready-mixed concrete is placed inside a space surrounded by a mold and hardened.
Structures such as bridges, tunnels, dams, retaining walls, and buildings are constructed of concrete. These concrete structures are usually constructed mainly in the following steps.
A rebar is placed to construct a formwork, concrete is put into the formwork, cured for a predetermined period, and the formwork is removed (demolded).
While putting ready-mixed concrete into the formwork from a mixer truck, etc., it is a vibrator for the concrete put into the formwork to prevent separation of the ready-mixed concrete material and spread it to every corner of the formwork. Agitating (kneading) with a (vibrator) and compacting with a vibrator (referred to as “placement”).
The condition of the ready-mixed concrete in the formwork is unknown until it is removed, and after the formwork is removed, the material is separated from the concrete surface (commonly known as “junka”) and the dents due to unfilling are found as poor placement locations. To do.
When an unfilled portion of concrete occurs, the cross-section is lost, and the rigidity expected in the design is not exhibited, and there is a risk of increased deflection due to load, cracking, or deformation due to stagnant water. Various measures are taken, such as the order of putting ready-mixed concrete and the vibration method of the vibrator. However, it is difficult to observe the internal conditions of the formwork and to predict and prevent the placement failure completely. .
In order to prevent the concrete placement failure portion, several methods for detecting the failure portion during placement have been proposed. The hitting detection method that is in practical use requires proficiency and cannot be confirmed objectively. Further, it is difficult to strike the entire range of the formwork without omission, and it is not accurate to make a judgment based on the hitting sound.

Patent Document 1 (Japanese Patent Laid-Open No. 2012-57369) discloses that a concrete construction range is divided into a plurality of inspection sections, and a heating process for heating the formwork in units of the inspection sections during the concrete construction, and after the heating process An imaging process for imaging the outer surface temperature of the mold for concrete placement for each inspection section by thermography, and a concrete unfilled portion for each inspection section based on the temperature distribution image of the outer surface of the mold obtained in the imaging process An invention of a method comprising a detection step of detecting and a removal step of removing a concrete unfilled portion detected in the detection step by compaction of a vibrator is disclosed, but the step is complicated. (Reference Figures 13 and 14)
This prior invention is a detection method based on the temporal relative difference in surface temperature appearing on the surface of the mold after heating the mold from outside and stopping the heating, and requires heating means. Because the heating range is limited, it lacks responsiveness.
In Patent Document 2 (Japanese Patent Application Laid-Open No. 2005-291791), the heating device heats the mold after filling concrete under the control of the heating control means, and the temperature measuring instrument measures the surface temperature of each unit region of the mold. The measurement data from the temperature measuring instrument after stopping heating is recorded in the data recording means, the phase comparison between the temperature change waveform of each unit area and the reference waveform of the predetermined period is calculated by the waveform comparison means, and the comparison result is output A method is disclosed in which a phase difference converted into an image or the like is output to the means, and a defective filling portion is detected based on the image.
Similar to the technique proposed in Patent Document 1, this prior invention lacks quick response.
In Patent Document 3 (Japanese Patent Laid-Open No. 11-183415), when concrete is placed inside a steel mold having good thermal conductivity, the temperature of the concrete during placement and the temperature at which the concrete does not exist are disclosed. The temperature is measured by bringing an electronic thermometer into contact with the outer surface of the formwork and the surface of the formwork is heated by irradiating with infrared rays to detect the difference in heat capacity that appears depending on the concrete filling condition. A method has been proposed.
For molds with good thermal conductivity, such as steel plates, use of contact thermometers, and further infrared heating is required, so the application is limited, and the measurement range is limited by heating and contact In the same manner as the contents proposed in Patent Documents 1 and 2, it lacks responsiveness.

JP 2012-57369 A JP-A-2005-291791 Japanese Patent Laid-Open No. 11-183415

  The present invention develops a method for detecting and managing the filling state of ready-mixed concrete during placement without external heating.

1. Detecting the condition of ready-mixed concrete on the basis of the temperature distribution on the outer surface of the formwork, which is obtained by observing the outer surface of the formwork while placing the ready-mixed concrete with a visible light camera and an infrared camera. Concrete placement management method.
2. 1. The formwork is constructed on the lower side of the structure, and is a formwork that is sealed so that the placement condition cannot be seen between the top of the formwork and the structure. The concrete placement management method described.
3. It is characterized by detecting the placement of ready-mixed concrete by using both visible light image and infrared image. Or 2. The concrete placement management method described.
4). 1. Information on an infrared camera and / or a visible light camera is displayed on a display. ~ 3. The concrete placement management method according to any one of the above.
5. 1. The display is a portable terminal or / and a glasses-type wearable terminal ~ 4. The concrete placement management method according to any one of the above.
6). Based on the ready-mixed concrete placement condition detected based on the temperature distribution that appears on the outer surface of the formwork obtained by observing the outer surface of the formwork while placing the ready-mixed concrete with a visible light camera and an infrared camera. A concrete placement management method characterized by compacting from the outside.
7). It has a mobile terminal or wearable terminal with a visible light camera and an infrared camera,
A portable terminal or a wearable terminal uses a visible image camera and an infrared camera to image the outer surface of a formwork that is being cast with ready-mixed concrete, and an infrared thermal image of the outer surface of the formwork on a portable display. Display and send it to the display of the glasses-type wearable terminal,
The wearable terminal displays a captured image of a formwork and an infrared thermal image.
8). 6. The wearable terminal is mounted on the head of the compacting operator. The concrete placement management apparatus as described.
9. A method for constructing a concrete structure,
In the process of placing ready-mixed concrete in the formwork that forms the concrete structure,
Using a photographing means with an infrared camera and a visible light camera,
The outer surface temperature of the mold is determined based on the infrared thermal image of the outer surface of the mold obtained with the infrared camera and the visible light image obtained with the visible light camera. A method for constructing a concrete structure comprising detecting concrete, confirming a concrete placement condition, and proceeding with concrete placement.
10. 8. Applying compaction vibration based on the confirmed concrete placement situation The construction method of the concrete structure as described.

1. The present invention has developed a method for detecting and managing the filling state of ready-mixed concrete during placement. Based on the temperature distribution appearing on the outer surface of the formwork, which is obtained by observing the outer surface of the formwork during the placement of ready-mixed concrete with an infrared camera, it is possible to detect the state of placing the ready-mixed concrete. The cast concrete that has been cast starts to generate heat due to a hydration reaction. The temperature difference between the surface of the mold part where the temperature has increased due to contact with the ready-mixed concrete and the unfilled part is detected. Since the spontaneous temperature of the ready-mixed concrete is detected, it is not necessary to heat from the outside of the mold, and a large area of the mold can be covered at the same time.
By observing and photographing the surface temperature of this formwork with an infrared camera, the progress of filling can be detected, and this infrared thermal image data is fed back to the operator who performs the compacting operation to use a vibrator. Thus, external vibration can be reliably applied to prevent the occurrence of defective parts in the concrete structure.
Therefore, according to the present invention, it is possible to detect the unfilled portion during the placement and feed back to the compacting operation as needed to perform the concrete placement management without causing the unfilled portion.
2. In the reverse placement method, there is also a beam on the upper end side of the formwork, and the inside of the formwork cannot be visually confirmed from above, and the concrete placement cannot be applied to the vibrator from above. The filling situation of concrete can be grasped on a case-by-case basis. In addition, the construction site can be constructed by performing placement management by confirming the placement status of concrete with different quality such as pillars and beams in high-rise buildings, and schedule management of retaining walls that construct large areas. The quality of concrete structures built with can be improved.
3. Focusing on the condition of filling the ready-mixed concrete, paying attention to the fact that the surface temperature of the formwork to which self-heating is transmitted is higher than the outside air temperature, a large area can be observed at a glance, so the condition of filling the concrete can be confirmed. At the same time, site management such as compaction can be performed accurately.
4). By comparing infrared thermal image information taken at the same time as image information taken from the outer surface of the mold using a portable terminal with a built-in or external visible light camera and an infrared camera, the situation can be judged in a normal visual state. .
Since the current state can be grasped by the normal image and the infrared image, the work can be performed flexibly.
Further, feedback to the worker can be displayed on a glasses-type wearable terminal, so that the work can be performed while confirming the compacted and filled portion while operating the breaker (vibrator).
Further, the placement management record can be created by storing the placement construction record in the management system.
5. In the concrete placement management method of the present invention, a management device is constituted by a portable terminal equipped with a normal visible light camera, an infrared camera built in or attached to the portable terminal, and a display displayed to an operator. It is simple and excellent in responsiveness. In particular, by using a spectacle-type wearable terminal worn on the operator's head as a display, the operator can specify the filling work location while operating the breaker (vibrator) with both hands, and work accuracy. And safety is improved.
6). Using this concrete placement management method, a concrete structure with few filling defects can be constructed.

The figure which shows the example of a concrete formwork. The figure which shows the example of a concrete formwork. An example of an infrared / visible light parallel camera. The figure which shows the example of the portable terminal equipped with the infrared camera. The figure which shows the example of the image of the concrete side surface acquired with the portable terminal. The figure which shows the example of concrete placement management apparatus "glasses type wearable terminal display". The figure which shows the formwork surface image (a) by visible light displayed on a display, and the formwork surface image (b) in the case of fresh concrete placement. The figure which shows the concrete pouring pipe structural example. The figure which shows the image displayed on a portable terminal. The figure which shows the example which image | photographed the side of the formwork in concrete placement. The figure which shows the concrete placement management structural example 2. FIG. Concrete placement management process diagram. Conventional example. Conventional process drawing.

(Outline of the present invention)
The present invention relates to a placement work management for filling a formwork with ready-mixed concrete and compacting it. The ready-mixed concrete is compacted using a vibrator while supplying ready-mixed concrete to the formwork so that separation and filling defects do not occur.
The present invention is an invention for objectively confirming the process of filling ready concrete in a sealed formwork.
When constructing a large-scale concrete structure, it is done according to the placement design plan, such as placing concrete in separate sections, etc., but the area filled with flowing concrete from the pouring site is visible from the outside of the formwork In a noisy site, it is difficult to communicate between the filling worker and the worker in charge of compacting the side of the formwork, and it is difficult to confirm the expected work.
Furthermore, in the reverse placement method, a formwork is constructed between the upper and lower beams, and the ready-mixed concrete will be poured from the side opening and cannot be observed from above, and the filling status should be detected by the sound of the formwork. It becomes.
When concrete with different strength used for columns and walls is handed over, the formation of the boundary is important, and the boundary management of filling and isolation is performed. Since the concrete filling of the CFT pillar cannot be observed inside the steel pipe, the steel pipe corresponds to the formwork of the present invention.

In the present invention, the filling state of these concretes is visualized during the placing operation and is objectively displayed by detecting the temperature distribution appearing on the outer surface of the mold form with an infrared image.
Thereby, workers can share information, work accuracy can be improved, and work records can be kept.
Make the placement management objective and build a concrete structure with few casting failures based on reliable placement management.

(Formwork, object)
In order to construct concrete molds for molding concrete structures such as walls and pillars of buildings, the concrete form forms a sealed and enclosed space so that fluid concrete does not leak out. Consists of a surface material such as a formwork panel along the outline of the construction target, a frame material provided vertically and horizontally to support the outer surface of the surface material so that the surface material does not deform, and a support material that prevents falling. . Specifically, the formwork is designed according to the scale and shape of the concrete structure, the placement schedule of ready-mixed concrete, and the like, and installed by the carpenter.
In the present invention, in addition to a typical formwork using a formwork panel, a product such as a CFT steel pipe as it is is included in the concept of formwork.
Depending on the type of face material, it is called steel formwork, plywood formwork, etc.
The concrete formwork of the present invention is a placement management technique suitable for construction for hardening ready-mixed concrete at a construction site.
When constructing large-area or complex structures such as reinforced concrete structures and retaining walls, it is required to grasp and manage the placement situation.

For example, FIGS. 1 and 2 show examples of a “wall-beam” formwork.
In the formwork 100 shown in FIG. 1, face members 101 a and 101 b are built on the left and right sides of the wall portion 101 with an interval corresponding to the wall thickness, and a widened beam portion 102 is formed on the upper portion thereof. The facing face materials are kept at a constant interval via the separator 103, and a frame material 104 is disposed on the face side to prevent the face material from swelling. Further, in the illustrated example, a support 106 that supports the floor formwork 105 from below is disposed. This support is designed as necessary, for example, by providing it obliquely with respect to the face material 101 for further reinforcement.
In the case of this formwork, the beam concrete secures the highest strength as a structural member, and the floor and the wall are made of concrete having a corresponding strength. For this purpose, it is necessary to perform management so that weak concrete does not enter the beam portion. In this case, it is basically a horizontal placement, and the situation can be confirmed visually from the upper surface. In addition to this, when continuous casting of the column portion is required, it becomes difficult to visually observe the flow of ready-mixed concrete with fluidity into the column portion. Furthermore, the wall construction of the reverse driving method in which there are beams on the upper and lower sides and the upper part is blocked cannot be observed at all. In general, a sensory method is used in which a skilled worker confirms the filling status by hitting the outer surface of the formwork.
Since the present invention visualizes self-heating information of ready-mixed concrete with an infrared image and objectively grasps it, it is possible to confirm a wide area of a mold at a time without relying on senses and work. .

(Concrete hydration reaction)
As soon as the cement is kneaded with water, the cement particles come into contact with water and the hydration reaction starts. Hydrates are formed over time, intertwined in a complex manner, set and hardened.
Concrete is mixed with a mixture of ordinary cement such as Portland cement, aggregate and water, and fresh fresh concrete with fluidity is adjusted at the plant, and the mold is filled in a controlled time. Since the cement hydration reaction begins when it comes into contact with water, the time until use for placing is determined to be within 120 minutes and managed. In addition, since the reaction rate varies depending on the outside air temperature, the quality is confirmed by a slump test or the like.
The heat of hydration reaction of Portland cement, which is generally used, has been reported to have two peaks within 60 minutes at the beginning of mixing and 8-10 hours (Journal "Concrete Engineering" 1984, NO.3, Heat of hydration). According to this report, the product is shipped from the ready-mixed factory and generates heat immediately after filling the formwork. In addition, an example in which the temperature rises by 5 ° C. or more after 6 hours from the casting has been reported.

(Placement, compaction, vibration)
When placing (injecting) concrete into a formwork, it is required to ensure the uniformity of the concrete and prevent initial defects. In order to prevent the separation of materials with different specific gravity, it is always stirred, so that it does not drop violently during placement and does not move laterally after placement, so as to ensure the uniformity of the ready-mixed fluid concrete.
Immediately after driving, sufficient compaction should be performed to prevent unfilled (cavity), bubbles, beans board (junka), cold joints, etc. from occurring. In compaction work, moderate vibration is applied from the inside and outside by an internal vibrator and a wood block to fluidize the concrete so that it flows to every corner that was not spread at the time of placement, but at the same time included in the interior. Allow air bubbles and excess moisture to emerge. In order to achieve sufficient compaction, the layers are stacked in layers up to a thickness of about 40 to 50 cm at the time of driving, and driving and compacting are repeated many times in thick constructions. For compaction, there are a rod-like vibrator that is directly inserted into concrete and gives vibration, and a mold vibrator that gives vibration to the mold.
When compaction is insufficient, an unfilled portion is generated, and material separation may occur due to excessive vibration. Furthermore, a large amount of bubble-like holes are formed on the surface after solidification, and the strength and aesthetic appearance are impaired. In addition, compaction is performed so as to secure a distance from the reinforcing bar to the concrete surface so as to sufficiently secure the reinforcing bar cover.

The purpose of compaction is as follows.
(1) Fill concrete to every corner of the formwork and around reinforcing bars and buried objects uniformly and densely.
(2) Exclude excess air (entrapped air).
(3) Integrate the concrete placed first and the concrete added later.

(Definition of infrared thermal image)
In the present invention, an image device that detects the far infrared region is used to detect and shoot far infrared rays emitted from the surface of the mold by the heat of hydration of concrete as a heat source.
When a video device that detects a far-infrared region is used, the subject itself is recognized as a light emitter, so that it can be recognized without any external light source. Far infrared rays can be reflected even if the surface of the reflecting surface is somewhat rough. Usually, the hot part is displayed in red and the low part is displayed in blue. Examples of a device that generates this include a heat ray imaging device or a forward looking infra-red (FLIR) device.
For example, an FLIR apparatus having a scene temperature of −20 ° C. to 120 ° C., an operating temperature of 0 ° C. to 35 ° C., and a sensitivity of 0.1 ° C. can be used.
In addition, FLIR ONE (FLIR Systems Japan) is equipped with a visible light camera and an infrared camera, and can capture both infrared images and visible images at the same time. Even if the detailed contour is unknown, it is possible to determine the detailed portion by superimposing it with the visible image, and it is possible to detect the temperature difference objectively even without special skill, and to share information between workers.
FIG. 3 shows an example of an imaging apparatus 2 for both visible light and infrared light.
(A) is a dual-purpose imaging device that includes a visible light camera 21 and an infrared camera 22 and includes a connector 23 that is connected to a portable terminal or the like. In this case, image information can be continuously obtained at the same position by the operator's hand-held operation or setting at a fixed point.
(B) is a dual-use imaging device worn by a worker on the head. The illustrated example shows an example in which a camera 25 is also added to the glasses-type wearable terminal 9. A jig 93 with a helmet is provided as a drop-off prevention. In addition, a camera may be attached to the forehead side of the helmet with a rubber band or the like. The wearable terminal camera can obtain image information as the worker looks around, and is highly responsive when the worker is freehand.

A dual-purpose imaging device 2 equipped with an infrared camera and a visible light camera is attached to a portable terminal 3 or the like, and by acquiring an image 8, image information is captured as electronic data, and information is shared with an administrator or other workers To do.
FIG. 4 shows the portable terminal 3 to which the dual-purpose image pickup device 2 is attached, and FIG. 5 shows an image 8 of the side surface of the concrete formwork being placed, which is obtained by the dual-use image pickup device 2.

  For example, by combining a worker with a glasses-type wearable display, the worker can concentrate on work such as a vibrator with both hands.

(Wearable display)
Smart glasses are wearable devices that are worn on the head as if wearing glasses. In smart glasses, information is superimposed on the actual scene.
By attaching the smart glasses so as to be held in the helmet, it is possible to reduce the weight burden of the smart glasses on the workers, and to prevent the workers from becoming hands-free and obstructing the work.
Multiple workers share the same image information and share instructions from managers, etc., so they can understand the noise and the status of parts that cannot be seen, and can perform work. Will improve.
FIG. 6 shows a worker wearing a glasses-type wearable display. Since the worker 6 wears the helmet 92 at the construction site, the wearable display (terminal) is stabilized by holding the glasses-type wearable display 9 on the holder 93 of the helmet 92, and the burden due to the mounting on the worker is reduced. Reduce. The worker 6 can confirm the filling state of the ready-mixed concrete from the image information on the side surface shown in FIG. Fig. 7 shows that concrete is being placed. Fig. 7 (a) shows a state before the ready-mixed concrete is placed (visible light image). Fig. 7 (b) shows that the lower part is filled with ready-mixed concrete. The temperature is rising.

The Example regarding the placement management structure 1 which concerns on this invention is shown in FIG.
Work 61 observes the formwork 4 and the formwork side face 41 during concrete placement, and photographs the formwork side face with the portable terminal 3 to which the dual-purpose image pickup device 2 is attached. To the member 62 and reflected in the operation of the vibrator 43. At the same time, the image is also sent to the management computer 7.
The ready-mixed concrete 5 is supplied into the mold from the inlet 51 of the supply pipe 52 that is passed over the assembled rebar, and is filled from below. While filling the ready-mixed concrete, the worker 62 uses the vibrator 43 to perform a compacting operation. Workers 61 and 62 wear helmets 91 and 92, respectively. Since workers have their own work, it is desirable to wear glasses-type wearable terminals.

FIG. 9 shows a schematic image 81 obtained by synthesizing infrared / visible light imaging displayed on the mobile terminal 3. Both the workers 61 and 62 share this image diagram.
The image 81 corresponds to a part of the mold side surface 41 of the mold 4 and shows that the lower part of the mold shows the high temperature part 82 and the high temperature part also appears in the ready-mixed concrete input part 82b. . Since the middle to upper part is an unfilled part, it is a low temperature part. On the side surface of the mold frame, there are a frame 42 in the horizontal direction and a vertical beam 44 in the vertical direction. The portion has a thickness and is difficult to rise in temperature, and thus has a lattice shape.

The example which image | photographed the mold side 41 of the mold 4 in concrete placement is shown in FIG.
In FIG. 10A, the upper part is an infrared image, and the lower part is a visible light image. The lower part indicated by visible light has no color change on the outer surface of the formwork, and the state of filling of the ready-mixed concrete cannot be confirmed by just looking. In the upper color image, the portion shown in red can be observed, and the color change is also seen in the input portion of the ready-mixed concrete, and the level of ready-mixed concrete can be detected.
FIGS. 10B, 10C, and 10D are examples in which the temperature state of a part of FIG. 10A is displayed. (B) is the temperature of the place where the ready-mixed concrete is not filled, and shows 24.6 ° C., (d) which is the upper end of the filling shows 30.6 ° C., and 32.0 in the filling middle part (c). ° C.
The temperature number is a pinpoint temperature, but is actually displayed so that the high temperature portion is red and the low temperature portion is blue. The resolution temperature is arbitrarily set such as 0.5 ° C. or 1.0 ° C.
Since the color temperature changes due to thermal fluctuations, it can be predicted that if there is an abnormality in the temperature change, there will be a placement failure portion by observing it continuously.

A second embodiment relating to the placement management configuration according to the present invention is shown in FIG.
The difference from the first embodiment is that the worker 61 standing on the side surface of the mold 4 is wearing the wearable terminal 9 with the camera 25. Information obtained from the wearable terminal is sent to the vibrator worker 62 or the management computer 7 via a tablet terminal or the like, and placement management is performed by sharing and storing the information.

An example of a placement management system is shown in FIG.
The time point at which the ready concrete is poured into the formwork in the first step S1 is set as a start.
In the second step S2, when a certain amount of ready-mixed concrete has accumulated in the formwork, such as after the first ready-mixed concrete has been injected, the manager or the worker placed on the side of the formwork will receive a visible light camera and an infrared ray. Using a portable terminal equipped with a camera, the outer surface of the mold is photographed with infrared rays and visible light to obtain an infrared image and a visible light image.
In 3rd step S3, the image image | photographed by 2nd step is displayed on a portable terminal display, and a condition is confirmed.
In 4th step S4, the image information image | photographed by 2nd step is displayed on the display of the other worker in connection with placement, and information is shared between workers.
In the fifth step S5, the worker in charge of compaction takes into account the image information displayed on the display, and compacts the necessary portions by focusing on the mold side surface vibration.
In the sixth step S6, a visible light image and an infrared image are acquired in the same way as in the second step in the middle of the compacting operation or at the end of stepwise.
In the seventh step S7, the image obtained in the sixth step is sent to another worker to share information.
In the eighth step S8, the manager confirms and evaluates the filling state of the ready-mixed concrete according to the temperature distribution appearing on the outer surface of the mold. This confirmation and evaluation information is also sent to other workers as necessary. If there is no problem, this installation will be terminated, and if raw concrete is injected intermittently, it will be restarted.
In the ninth step S9, if the evaluation is insufficient in the eighth step S8, the readjustment point is instructed based on the image according to → B, and the process returns to the fourth step S4.
The tenth step S10 shows a case where a series of process management is recorded in the computer. Since portable terminals and wearable terminals are connected via the network, they can be stored in a computer and recorded easily.

DESCRIPTION OF SYMBOLS 1 ... Placing management structure 100 ... Formwork 101 ... Wall part 101a ... Face material 101b ... Face material 102 ... Beam part 103 ... Separator 104 ... Frame material 105 ... Floor formwork 106 ... Support

2 ... Dual-use imaging device 21 ... Visible light camera 22 ... Infrared camera 23 ... Connector 25 ... Camera

3. Mobile terminal

4 ... Formwork 41 ... Formwork wall surface 42 ... Frame 43 ... Vibrator 44 ... Vertical rail

5 ... Ready-mixed concrete 51 ... Input 52 ... Supply pipe

6 ... Worker 61 ... Worker 62 ... Worker

7 ... Management computer

8 ... Image 81 ... Schematic diagram of infrared / visible light synthesis 82 ... High temperature part 82b ... Input part 83 ... Unfilled part

9 ... Wearable display (terminal)
91 ... Helmet 92 ... Helmet 93 ... Holder

Claims (10)

  Detecting the condition of ready-mixed concrete on the basis of the temperature distribution on the outer surface of the formwork, which is obtained by observing the outer surface of the formwork while placing the ready-mixed concrete with a visible light camera and an infrared camera. Concrete placement management method.   2. The concrete molding according to claim 1, wherein the mold is constructed on the lower side of the structure, and the mold is sealed so as not to show a placement condition between the top of the mold and the structure. Management method.   3. The concrete placement management method according to claim 1 or 2, wherein a visible concrete placement state is detected using a visible light image and an infrared image together.   The concrete placement management method according to any one of claims 1 to 3, wherein information on the infrared camera and / or visible light camera is displayed on a display.   The concrete placement management method according to any one of claims 1 to 4, wherein the display is a portable terminal or / and a glasses-type wearable terminal.   Based on the ready-mixed concrete placement condition detected based on the temperature distribution that appears on the outer surface of the formwork obtained by observing the outer surface of the formwork while placing the ready-mixed concrete with a visible light camera and an infrared camera. A concrete placement management method characterized by compacting from the outside. It has a mobile terminal or wearable terminal with a visible light camera and an infrared camera,
A portable terminal or a wearable terminal uses a visible image camera and an infrared camera to image the outer surface of a formwork that is being cast with ready-mixed concrete, and an infrared thermal image of the outer surface of the formwork on a portable display. Display and send it to the display of the glasses-type wearable terminal,
The wearable terminal displays a captured image of a formwork and an infrared thermal image.   8. The concrete placement management apparatus according to claim 7, wherein the wearable terminal is mounted on the head of the compacting operator. A method for constructing a concrete structure,
In the process of placing ready-mixed concrete in the formwork that forms the concrete structure,
Using a photographing means with an infrared camera and a visible light camera,
The outer surface temperature of the mold is determined based on the infrared thermal image of the outer surface of the mold obtained with the infrared camera and the visible light image obtained with the visible light camera. A method for constructing a concrete structure comprising detecting concrete, confirming a concrete placement condition, and proceeding with concrete placement.   10. The method for constructing a concrete structure according to claim 9, wherein compaction vibration is applied based on the confirmed concrete placement condition.