JP5389633B2 - Management method of ready-mixed concrete - Google Patents

Description

The present invention relates to a method for managing mixed concrete for managing the time and temperature to completion pouring from kneading upstream of fresh concrete.

  Conventionally, since the properties of ready-mixed concrete change over time from the time of kneading, it is known that the time from kneading to completion of pouring and the temperature control of the ready-mixed concrete during that time are important. For this reason, the standard time for the time from finishing to the completion of pouring is specified as a standard within 120 minutes when the outside air temperature is 25 ° C. or less, and within 90 minutes when it exceeds 25 ° C. . This time limit varies depending on the concrete composition, material used, temperature, humidity, and transportation method, and is therefore set for each placement site.

  On the other hand, in recent years, a technique using a wireless IC tag storing management information in fields such as logistics management, inventory management, traceability management, production line management, and entrance / exit management has been actively used. With the expansion of the field of use of the wireless IC tag, various technologies have been proposed in the construction field.

  For example, in Patent Document 1 below, a wireless vinyl sheet that stores information on the use of concrete such as concrete blending, mixing ratio, design information, strength, moisture ratio, slump, manufacturing time, repair history, etc. is used as a waterproof vinyl sheet. It has been proposed to embed this in a concrete member. In the following Patent Document 2, an embedded RFID module equipped with a temperature sensor is embedded in the cast concrete, temperature is measured every predetermined time, and the cast concrete is calculated using an integrated temperature calculated from the temperature data. A method of grasping and managing the state of the problem has been proposed.

JP-A-2005-330729 JP 2006-71575 A

  However, Patent Document 1 and Patent Document 2 described above perform maintenance management and information provision of secondary concrete products and concrete structures by embedding a wireless IC tag storing concrete management information in a concrete member. No management system has been known that manages the time and temperature from the preparation of ready-mixed concrete to the completion of placement.

  On the other hand, ready-mixed concrete needs to be treated as cold concrete when the daily average temperature falls below 4 ° C, and as hot concrete when the daily average temperature exceeds 25 ° C. The time to complete the installation must be shortened and the ready-mixed concrete temperature must be maintained within the range of 5 to 20 ° C. It must be 35 ° C. or lower, and management of time and temperature is particularly important.

  By the way, the conventional time management from the training to the completion of placing is performed by the following procedure. (1) Record the finishing time in the raw concrete slip on the raw concrete slip. (4) The ready-mixed concrete truck arrives at the installation site, and the driver delivers the ready-container slip to the consignee, (5) The consignee arrives at the ready-container slip, The placement completion time is written by hand.

  In such conventional time management, (1) it takes time and effort to calculate the time from completion time and placement location arrival time to completion of placement, (2) arrival time, placement completion Since the time is not known at the kneading location, it is not possible to make fine adjustments to the shipping time. (3) If the consignee neglects to record the time, the time until completion of placement will not be known. For this reason, there has been a problem that manual input by a personal computer for creating a form is required.

  In addition, the conventional time adjustment from the training to the completion of placing is performed in the following procedure. (1) The person in charge of consignment calls the raw plant and adjusts the shipping interval. (2) If the driver of the ready-mixed concrete vehicle determines that there are many units waiting to receive the cargo, the raw plant is voluntarily established by radio. And the raw plant representative calls the field representative to coordinate the change in shipment interval.

In such a conventional time adjustment, the delay in the placement completion time is often caused by some trouble, and the person in charge can concentrate on the response and delay the contact to the raw plant to adjust the shipping interval. However, there was a problem that the time until completion of the subsequent vehicle was further delayed. Furthermore, there were problems such as an increase in transportation costs due to an increase in waiting vehicles and environmental pollution due to an increase in CO ₂ emissions.

On the other hand, conventional temperature control of ready-mixed concrete has been performed as follows. (1) Measure and record the temperature of raw concrete when it is shipped. (2) The temperature is measured and recorded by quality control performed once every 50 to 100 m ³ .

  In such conventional temperature management, temperature management for each ready-mixed concrete transport vehicle cannot be performed, so it is not possible to grasp the exact trend of temperature change, and appropriate countermeasures should be taken when there is a temperature change outside the temperature range. It could not be taken, and the increase in cost and quality due to the generation of unqualified concrete was a problem.

  Conventional temperature adjustment of ready-mixed concrete has been performed by calling a ready-made plant by telephone from a quality staff on site and requesting temperature adjustment. In such conventional temperature adjustment, the situation of the temperature change cannot be grasped in real time on the raw plant side, so that not only the response is delayed but also the preventive measures cannot be taken.

Therefore, the main problems of the present invention are time management that enables simple and reliable grasp and sharing of time information, easy and accurate time adjustment, and accurate temperature management for each ready-mixed concrete transport vehicle, by implementing the compatible temperature control in real time is to provide a method of managing raw concrete capable of performing time and temperature management from kneading up to completion pouring.

As the present invention according to claim 1 to solve the above problems, a raw concrete management method for managing the time and temperature to completion pouring from kneading up ready-mixed concrete,
For each delivery lot from the kneading place fresh concrete until hitting設場plant, which has a temperature measuring function of fresh concrete, provided with a wireless IC tag ID number is assigned for the information identification Rutotomoni, wireless IC tag Is a tag body having a transmission function and an information storage function, a temperature sensor having a contact or non-contact temperature measurement function, a power supply device for supplying power to the tag body and the temperature sensor, and turning on / off the power. It consists of a power switch to switch,
Each of the mixing place and the placing place of the ready-mixed concrete receives information from the wireless IC tag and transmits the received information to the server computer via the information line network, and via the information line network. An information browsing device capable of information communication with the server computer is installed, and information recorded in the server computer can be browsed by the information browsing device,
When the mixing of the ready- mixed concrete is finished at the kneading place, when the power switch of the wireless IC tag is pushed and the power is turned on, the transmission / reception device installed at the kneading place receives “power on” information from the wireless IC tag. The time at this time is transmitted to the server computer together with the ID number, and recorded as “training time”,
If ready-mixed concrete is loaded on the ready-mixed concrete transport vehicle at the kneading location, the wireless IC tag temperature sensor is inserted into the ready-mixed concrete, and then transmission of the ID number and temperature is started for each transport lot. , At least the time and temperature information from the training to the completion of placement are transmitted and recorded together with the ID number to the server computer,
When the ready-mixed concrete vehicle departs from the kneading site and is outside the detection range of the transmission / reception device installed at the kneading site, the information reception is completed, and the time at this time is sent to the server computer together with the ID number. Time "
When the ready-mixed concrete truck arrives at the placement site and falls within the detection range of the transmission / reception device installed at the placement site, information reception is started, and the time at this time is transmitted to the server computer together with the ID number, Recorded as “location arrival time”
When placing at the placement site, the information browsing device confirms the time and temperature information recorded in the server computer, and if it is within the specified time and temperature range, the placement is performed. Start and do not perform placement when the specified time and temperature range are exceeded, or after taking necessary measures,
When the ready-mixed concrete carriage departs from the placement site after the placement is completed, it is out of the detection range of the transmission / reception device installed at the placement location, information reception is completed, and the time at this time together with the ID number is the server computer To be recorded as “placement completion time”
When the ready-mixed concrete truck returns to the kneading site and returns the wireless IC tag, it is received and arrives again at the transmitting / receiving device installed at the kneading site, and the role of one ready-mixed concrete transport vehicle is completed. A method for managing concrete is provided.

In the first aspect of the present invention, the server computer is provided with information on “working time”, “kneading place departure time”, and “placement place arrival time” corresponding to the ID number . Information, information on “placement completion time”, and information on at least time and temperature between training and completion of placement, and information recorded on the server computer is browsed by the information browsing device Because it is possible, time (time) information can be easily and reliably grasped, and time management that enables sharing of this time information between the kneading place and the placing place can be realized. Easy and accurate time adjustment can be realized by changing the temperature, etc., and accurate temperature control for each ready-mixed concrete transport lot (for each ready-mixed concrete transport vehicle) can be realized. It is compatible temperature control in real-time will be able to implement by viewing any time information. This makes it possible to reliably manage the time and temperature from the training to the completion of placement.

In addition, it is possible to take appropriate countermeasures when there is a temperature change outside the temperature range, to reduce costs and improve quality by suppressing the generation of unqualified concrete, reduce transportation costs by reducing the number of standby vehicles, and reduce CO _2. Emissions can be reduced, and kneading site operators can participate in the site by sharing operation information and placement information.

Furthermore, since the server computer records the kneading site departure time information and the placement site arrival time information, the information can be appropriately obtained by browsing the information by the information browsing device at each of the kneading site and the placement site. It is possible to estimate the training time and reduce waiting vehicles.

  As described above, according to the present invention, time management that enables easy and reliable grasp and sharing of time information, easy and accurate time adjustment, and accurate temperature management for each ready-mixed concrete transport vehicle. By realizing the temperature adjustment that can be handled in real time, it becomes possible to manage the time and temperature from training to completion of placement.

It is the schematic which shows the system 1 of the ready-mixed concrete management method which concerns on this invention. 2 is a configuration diagram of a wireless IC tag 2. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  In general, a ready-mixed concrete transport vehicle 20 is used to transport ready-mixed concrete from a kneading place such as a ready-mixed concrete kneading ready-mixed concrete to a placing place where ready-mixed concrete is placed.

  The ready-mixed concrete management system 1 according to the present invention includes a time from the ready-mixing of ready-mixed concrete at the kneading site to the completion of placing at the set-up site, and the temperature of the ready-mixed concrete being transported by the ready-mixed concrete transport vehicle 20. It is for managing. The “kneading” refers to a point in time when kneading of a concrete raw material such as cement, aggregate, and water by a mixer (kneader) is completed in a kneading place such as a fresh concrete manufacturing plant.

  Hereinafter, a specific system configuration will be described. The ready-mix concrete transport vehicle 20 has a function of measuring the temperature of the ready-mixed ready-mixed concrete and has a wireless IC tag 2 to which an ID number for information identification is given. Further, each of the ready-mixed concrete mixing place and the placing place receives information from the wireless IC tag 2 and transmits the received information to the server computer 3 through an information line network such as the Internet. Transmitting and receiving devices 4 and 5 and information browsing devices 6 and 7 having an information input function such as a personal computer, a portable terminal or a cellular phone which can communicate with the server computer 3 through the information network. And are installed. The information browsing devices 6 and 7 may be devices capable of information communication in one direction and only browsing.

  As shown in FIG. 2, the wireless IC tag 2 has a tag main body 8 having a transmission function and an information storage function, and a contact-type temperature measurement function such as a contact type such as a thermocouple or a radiation thermometer. It comprises a temperature sensor 9, a power supply device 10 for supplying power to the tag body 8 and the temperature sensor 9, and a power switch 11 for switching on / off of the power.

(Management procedure)
Next, a management procedure using the management system 1 will be described.

  First, as a first procedure, when the information browsing devices 6 and 7 have an information input function in advance, they are not shown by the information browsing device 6 (or 7) or when they do not have an information input function. The placement information such as the placement date, kneading location name, placement location name, construction contractor, construction name, etc. is input to the server computer 3 by another computer or the like.

  As a second procedure, when the mixing of ready-mixed concrete is completed at the kneading place, the power switch 11 of the wireless IC tag 2 is pushed to turn on the power (ON state). At this time, the transmission / reception device 4 installed at the kneading place receives the “power-on” information from the wireless IC tag 2, and the time at this time is transmitted to the server computer 3 together with the ID number as “the training time”. To be recorded.

  As a third procedure, if the ready-mixed concrete truck 20 is loaded with ready-mixed concrete at the kneading place, the wireless IC tag 2 is handed over to the driver of the ready-mixed concrete transport truck 20 together with the shipping slip.

  As a fourth procedure, the driver inserts the temperature sensor 9 into the ready-mixed concrete loaded on the ready-mixed concrete transport vehicle 20, connects the temperature sensor 9 and the tag body 8, and attaches the tag body 8 to the outside of the vehicle. Thereby, transmission of ID number and temperature is started, and temperature management of ready-mixed concrete comes to be performed for every conveyance lot.

  As a fifth procedure, when the ready-mixed concrete transport vehicle 20 departs from the kneading place and is out of the detection range of the transmission / reception device 4 installed at the kneading place, the information reception is completed, and the time at this time together with the ID number is the server computer 3 And recorded as “kneading place departure time”.

  As a sixth procedure, when the ready-mixed concrete transport vehicle 20 arrives at the placement site and falls within the detection range of the transmission / reception device 5 installed at the placement site, information reception is started, and the time at this time together with the ID number is the server. It is sent to the computer 3 and recorded as “placement time arrival time”.

Since the information on arrival at the placement site can also be viewed by the information browsing device 6 at the kneading location, the time from training to arrival at the placement location can be grasped, and it is appropriate according to the time at which the placement is placed. It is possible to reversely calculate the training time. For this reason, it is possible to shorten the time from training to completion of placement, and it is possible to reduce transportation costs and reduce CO ₂ emissions by reducing the number of standby vehicles.

  Here, information such as temperature between the transmission / reception device 4 at the kneading location and the detection range of the transmission / reception device 5 at the placement location is accumulated in the tag body 8 and transmitted to the server computer 3 upon arrival at the placement location. .

  As a seventh procedure, at the time of placement at the placement site, the information browsing device 7 confirms the time and temperature information from the training recorded in the server computer 3, and is within the specified time and temperature range. If so, start placing. On the other hand, when the specified time and temperature range are exceeded, in order to prevent the cost increase and quality deterioration due to the generation of unqualified concrete, the placement is performed or necessary measures are taken. At this time, the information browsing device 7 records in the server computer 3 the start of placement and the time. Thereby, also in the kneading place, the information browsing device 6 can share information about the start of placing in the placing place.

  As the eighth procedure, when placing is completed and the ready-mixed concrete transport vehicle 20 departs from the placement place, it is outside the detection range of the transmission / reception device 5 installed at the placement place, information reception ends, and the time at this time Is transmitted to the server computer 3 together with the ID number and recorded as “placement completion time”.

  As a ninth procedure, when the ready-mixed concrete transport vehicle 20 returns to the kneading place and the wireless IC tag 2 is returned, the radio IC tag 2 is received again by the transmission / reception device 4 installed at the kneading place and arrives. The role is complete.

  DESCRIPTION OF SYMBOLS 1 ... Management system, 2 ... Wireless IC tag, 3 ... Server computer, 4/5 ... Transmission / reception device, 6-7 ... Information browsing device, 8 ... Tag main body, 9 ... Temperature sensor, 10 ... Power supply device, 11 ... Power switch , 20 ... Ready-mixed concrete transporter

Claims (1)

A ready-mixed concrete management method for managing the time and temperature to completion pouring from kneading up ready-mixed concrete,
For each delivery lot from the kneading place fresh concrete until hitting設場plant, which has a temperature measuring function of fresh concrete, provided with a wireless IC tag ID number is assigned for the information identification Rutotomoni, wireless IC tag Is a tag body having a transmission function and an information storage function, a temperature sensor having a contact or non-contact temperature measurement function, a power supply device for supplying power to the tag body and the temperature sensor, and turning on / off the power. It consists of a power switch to switch,
Each of the mixing place and the placing place of the ready-mixed concrete receives information from the wireless IC tag and transmits the received information to the server computer via the information line network, and via the information line network. An information browsing device capable of information communication with the server computer is installed, and information recorded in the server computer can be browsed by the information browsing device,
When the mixing of the ready- mixed concrete is finished at the kneading place, when the power switch of the wireless IC tag is pushed and the power is turned on, the transmission / reception device installed at the kneading place receives “power on” information from the wireless IC tag. The time at this time is transmitted to the server computer together with the ID number, and recorded as “training time”,
If ready-mixed concrete is loaded on the ready-mixed concrete transport vehicle at the kneading location, the wireless IC tag temperature sensor is inserted into the ready-mixed concrete, and then transmission of the ID number and temperature is started for each transport lot. , At least the time and temperature information from the training to the completion of placement are transmitted and recorded together with the ID number to the server computer,
When the ready-mixed concrete vehicle departs from the kneading site and is outside the detection range of the transmission / reception device installed at the kneading site, the information reception is completed, and the time at this time is sent to the server computer together with the ID number. Time "
When the ready-mixed concrete truck arrives at the placement site and falls within the detection range of the transmission / reception device installed at the placement site, information reception is started, and the time at this time is transmitted to the server computer together with the ID number, Recorded as “location arrival time”
When placing at the placement site, the information browsing device confirms the time and temperature information recorded in the server computer, and if it is within the specified time and temperature range, the placement is performed. Start and do not perform placement when the specified time and temperature range are exceeded, or after taking necessary measures,
When the ready-mixed concrete carriage departs from the placement site after the placement is completed, it is out of the detection range of the transmission / reception device installed at the placement location, the information reception is completed, and the time at this time together with the ID number is the server computer To be recorded as “placement completion time”
When the ready-mixed concrete truck returns to the kneading site and returns the wireless IC tag, it is received and arrives again at the transmitting / receiving device installed at the kneading site, and the role of one ready-mixed concrete transport vehicle is completed. management method of concrete.

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