JP5778890B2 - Concrete management method and system - Google Patents

Description

  The present invention relates to a concrete management method and system used for predicting the temperature at the time of manufacturing concrete and the temperature at the time of placing, and determining whether or not concrete can be produced and whether or not concrete can be placed.

  One of the important factors in the construction of concrete is the temperature of the concrete, and the temperature of the concrete affects the quality in construction and the conditions in transportation. In particular, when the temperature of concrete rises, the hydration reaction is accelerated and the long-term strength tends to decrease, and because the curing temperature is high, cracking tends to occur when the outside air drops sharply. It tends to cause phenomena such as slump loss. In order to cope with this, conventionally, when concrete is produced in a concrete production plant, a method of estimating the temperature of the concrete that has been kneaded and managing the temperature of the concrete has been proposed. This concrete temperature management method is described in Patent Document 1.

  In the concrete temperature management method disclosed in Document 1, when concrete is manufactured, temperature sensors are arranged in measuring tanks for measuring various materials of the concrete, and these temperature sensors are connected to a temperature management device. The specific heat of various concrete materials is input and stored in advance in the management device. At the time when the material is weighed by each measuring tank, the temperature and the measured value of each material weighed are detected, and this temperature and the measured value are sent to the temperature management device. In the temperature management device, the concrete kneading temperature is calculated from the specific heat of various materials stored in advance and the temperature and weight of each material fed in, and the concrete kneading temperature is estimated. Then, the estimated concrete kneading temperature is output by an output device to provide management information of the concrete kneading temperature.

JP-A-8-127020

  However, in the production of this type of concrete, in general, the ambient temperature of various materials, the temperature of various materials, and the room temperature of the mixing chamber before actual mixing of various materials of concrete are measured, and the results are artificially determined. Since the temperature at the time of completion of concrete production is predicted and the possibility of production is judged, if the temperature at the time of completion of production is predicted incorrectly, it will produce concrete that cannot be used in accordance with regulations. Thus, there is a problem that construction loss, that is, loss of time and cost occurs. In addition, the temperature at the completion of concrete placement is usually calculated by an empirically known formula and used to determine whether or not placement is possible. In this case, heat during concrete transportation or during placement is used. When it is necessary to pay attention to the loss, the heat loss during transportation and during placement is determined from experience, and the temperature change that should be influenced by the weather is not taken into account. It is difficult to accurately predict the temperature of the steel, and if the temperature is incorrectly predicted, the concrete placement work is wasted, resulting in a construction loss, that is, a loss of time and cost.

  The present invention solves such a conventional problem, in the concrete manufacturing process of supplying various materials from the storage unit for storing various materials of concrete to the kneading unit, and kneading the various materials in the kneading unit, Providing a concrete management method and system capable of predicting the temperature at the time of completion of concrete as accurately as possible, and appropriately determining whether or not concrete can be manufactured, and after completion of concrete manufacture, In the concrete placement process, the temperature at the completion of concrete placement is predicted as accurately as possible in the concrete placement process where the concrete is placed in the concrete placement site, and the concrete placement decision is made. It aims at providing the concrete management method and system which can perform appropriately.

In order to achieve the above-described object, the present invention supplies the various materials to a kneading unit from a storage unit that stores various materials of concrete under conditions where temperature change should be considered, and the various materials are supplied to the kneading unit. A concrete management method for managing a manufacturing process of concrete to be kneaded, which measures the temperature around the storage unit, the temperature of the various materials, and the temperature inside the kneading unit before mixing the various materials, Prediction for predicting the temperature at the time of completion of the concrete production from the relationship between the combination of the measured values of the temperature, the temperature of various materials, the temperature in the kneading part, and the measured value of the concrete temperature at the time of completion of the concrete production A step of creating an equation, and weather forecast information notification means for notifying weather forecast information at an arbitrary point and time every predetermined time or every predetermined time, By combining the predicted temperature value around the storage unit at the time when the concrete production is scheduled to be completed, the temperature of the various materials before mixing the various materials, and the actual measured value of the temperature in the kneading unit, the prediction formula And a step of calculating a predicted temperature at the time of completion of manufacture of the concrete, and surrounding the storage unit at the time of completion of manufacture of the concrete according to the prediction formula and weather prediction information before mixing the various materials. The gist is to determine whether or not the concrete can be manufactured based on the predicted temperature at the time of completion of manufacturing the concrete based on the predicted temperature value.
The present invention further includes the step of accumulating and analyzing each measured value following the step of calculating the predicted temperature at the completion of concrete production, and / or recording and storing the predicted temperature at the completion of concrete production together with each measured value. It is preferable to have the step to do.
Further, the present invention provides a concrete placing step of transporting the concrete to the concrete placement place after completion of concrete production under conditions where temperature change should be considered , and placing the concrete at the concrete placement place. A concrete management method for managing the temperature at the time of completion of the concrete production, the concrete production location, the concrete transport route, and the concrete placement location before the concrete placement. Measure the temperature at the time of measurement and at the point, and the combination of the temperature at the time of completion of the concrete production, the measured value of the temperature of the concrete production place, the transportation route, and the placement place, and the concrete placement time Predict the temperature at the completion of the concrete placement from the relationship with the actual measured temperature of the concrete A weather prediction information notification means for notifying the weather prediction information at an arbitrary point and time point every predetermined time or every predetermined time, and before the concrete is placed, Based on the prediction formula, the concrete is placed according to the combination of the predicted temperature value at the predetermined measurement time and point at the concrete production site, transport route, and placement site, and the temperature at the completion of the concrete production. Calculating a predicted temperature at the time of completion of construction, and the predetermined measurement time at the concrete production place, transport route, and placement place according to the prediction formula and weather prediction information before placing the concrete. And determining whether or not the concrete is to be placed from the predicted temperature at the time of completion of placing the concrete based on the predicted temperature value at the point.
In this case, the predicted temperature at the completion of the concrete production calculated by the above-described concrete management method may be used as the temperature at the completion of the concrete production, or an actual measurement value may be used.
The present invention further includes a step of accumulating and analyzing each measured value following the step of calculating a predicted temperature at the time of completion of concrete placement, and / or a predicted temperature at the time of completion of placing of concrete together with each measured value. It is preferred to have a record keeping step.

Furthermore, in order to achieve the above-mentioned object, the present invention supplies the various materials to a kneading unit from a storage unit for storing various materials of concrete under conditions where temperature change should be taken into account. A concrete management system for managing a manufacturing process of concrete to be kneaded in a section, which measures the temperature around the storage section, the temperature of the various materials, and the temperature inside the kneading section before kneading the various materials. In order to predict the temperature at the time of completion of the concrete production from the relationship between the combination of the measured values of the air temperature, the temperature of various materials, the temperature in the kneading part, and the measured value of the concrete temperature at the time of completion of the concrete production. And a weather forecast information notifying means for notifying weather forecast information at an arbitrary point and time every predetermined time or every predetermined time. The predicted temperature value around the storage unit at the time when the concrete production is scheduled to be completed, and a combination of the temperature of the various materials and the measured value of the temperature in the kneading unit before mixing the various materials. Means for calculating a predicted temperature when the concrete is completed based on a formula, and the storage unit at the time when the concrete is scheduled to be completed based on the prediction formula and weather forecast information before mixing the various materials. The gist of the invention is to determine whether or not the concrete can be manufactured from the predicted temperature at the completion of manufacturing the concrete based on the predicted ambient temperature value.
Further, the present invention provides a concrete placing step of transporting the concrete to the concrete placement place after completion of concrete production under conditions where temperature change should be considered , and placing the concrete at the concrete placement place. A concrete management system that manages the temperature at the time of completion of the concrete production, the predetermined location at the concrete production site, the concrete transport route, and the concrete placement site before the concrete placement. Measure the temperature at the time of measurement and at the point, and the combination of the temperature at the time of completion of the concrete production, the measured value of the temperature of the concrete production place, the transportation route, and the placement place, and the concrete placement time The temperature at the time of completion of the concrete placement is predicted from the relationship with the measured value of the concrete temperature A means for creating a prediction formula, and weather forecast information notification means for notifying weather forecast information at an arbitrary point and time every predetermined time or every predetermined time, before placing the concrete, Based on the prediction formula, based on the prediction formula, the combination of the predicted temperature value at the predetermined measurement time point and the point at the concrete manufacturing site, the transportation route, and the placement site, and the temperature at the time of completion of the concrete manufacturing, Means for calculating a predicted temperature at the time of pouring completion, and the predetermined measurement time at the concrete production place, transport route, and pouring place according to the prediction formula and weather prediction information before placing the concrete. And determining whether or not the concrete can be placed based on the predicted temperature when the concrete is placed based on the predicted temperature value at the point.

(1) In the concrete management method of the present invention, under the conditions where temperature change should be considered , various materials are supplied from a storage unit storing various materials of concrete to the kneading unit, and various materials are kneaded in the kneading unit. In the manufacturing process, before mixing the various materials, from the relationship between the measured values of the ambient temperature around the storage unit, the temperatures of the various materials, and the temperature in the kneading unit, and the measured value of the temperature at the completion of the concrete production, Create a prediction formula for predicting the temperature at the time of the completion of production of the product, and obtain the predicted temperature value at the time of completion of production of the concrete around the storage unit, the temperature of various materials, and the temperature in the kneading unit obtained by the weather forecast information notification means Based on the prediction formula, the predicted temperature at the completion of the concrete production is calculated based on the combination with the actual measured value of the concrete. Since it is determined whether, under conditions to be considered temperature change, the temperature at the time of completion of manufacture of the concrete to predict accurately as possible, it is possible to properly carry out the determination of the production whether the concrete, that Has a special effect.
(2) In the concrete management method of the present invention, the concrete placement is carried out after the concrete has been manufactured and transported to the concrete placement site and placed in the concrete placement site under conditions where temperature change should be considered. In the installation process, the combination of the temperature at the time of completion of concrete production, the temperature of the concrete production site, the temperature of the concrete transportation route, and the measured temperature of the concrete placement site before the concrete placement, and the concrete Based on the relationship with the actual temperature measured at the time of placing the concrete, create a prediction formula to predict the temperature at the time of concrete placement, and obtain the weather forecast information notification means, the concrete production location, transport route, Based on the prediction formula based on the combination of the predicted temperature value at the placement site and the temperature at the completion of concrete production, The predicted temperature at the completion pouring of Nkurito calculated, based on the predicted temperature, since it is determined hit設可whether concrete, under conditions to be considered temperature changes, variable temperature at the completion pouring concrete Predicting as accurately as possible, it is possible to appropriately determine whether or not concrete can be placed.
(3) In the concrete management system of the present invention, under conditions that should be considered for temperature changes , various materials are supplied from a storage unit for storing various materials of concrete to the kneading unit, and various materials are kneaded in the kneading unit. In the manufacturing process, before mixing the various materials, from the relationship between the measured values of the ambient temperature around the storage unit, the temperatures of the various materials, and the temperature in the kneading unit, and the measured value of the temperature at the completion of the concrete production, Create a prediction formula for predicting the temperature at the time of the completion of production of the product, and obtain the predicted temperature value at the time of completion of production of the concrete around the storage unit, the temperature of various materials, and the temperature in the kneading unit obtained by the weather forecast information notification means Based on the prediction formula, the predicted temperature at the completion of concrete production is calculated by combining with the actual measured value of Since determining production possibility, under conditions to be considered temperature change, the temperature at the time of completion of manufacture of the concrete to predict accurately as possible, it is possible to properly carry out the determination of the production whether the concrete, There is a special effect.
(4) In the concrete management system according to the present invention, after concrete production is completed under conditions where temperature changes should be taken into account , the concrete is transported to the concrete placement site and placed in the concrete placement site. In the installation process, the combination of the temperature at the time of completion of concrete production, the temperature of the concrete production site, the temperature of the concrete transportation route, and the measured temperature of the concrete placement site before the concrete placement, and the concrete Based on the relationship with the actual temperature measured at the time of placing the concrete, create a prediction formula to predict the temperature at the time of concrete placement, and obtain the weather forecast information notification means, the concrete production location, transport route, Based on the prediction formula based on the combination of the predicted temperature value at the placement site and the temperature at the completion of concrete production , Calculate the predicted temperature at the completion pouring concrete, based on the predicted temperature, since it is determined hit設可whether concrete, under conditions to be considered temperature change, the temperature at the completion pouring concrete Predicting as accurately as possible, it is possible to determine whether concrete can be placed properly.

Flow chart showing a concrete management method for managing a concrete production process according to the present invention. Diagram showing the image of the management method Diagram showing the image of the management method The figure which shows various elements for deriving the calculation formula created in the same management method The figure which shows the evidence (management form) created with the same management method The figure which shows schematic structure of the concrete management system based on the management method Flow chart showing a concrete management method for managing a concrete placing process according to the present invention.

この場合、受材ビンに貯蔵されている骨材の温度Ｔａ１、Ｔａ２、…、セメントの温度Ｔｃ、水の温度Ｔｍと外気温との関係は、事前に実測して関係式を得ておく。
また、日射を考慮した受材ビン内部温度は、次の式（２）となる。複数の粒径の骨材を用いる場合、つまり、複数の受材ビンがある場合は、個別に式を得ておく。
なお、式（２）を導くための各種要素を図４に示す。図４に示すように、測定ポイントにおける水平面日射量（計測値）はＩｔｖで表され、その外気温度（計測値）はＴｏａで表される。
また、受材ビン内部の物性などに関する各種要素は次のように表される。
受材ビン表面積：Ａ
時刻ｎの内部代表温度：Ｔ（ｎ）
空気熱容量（既知）：Ｃｐａ
空気密度（既知）：ρａ
空間容積（計測値）：Ｖａ
材料熱容量（既知）：Ｃｐｂ
材料密度（既知）：ρｂ
材料容積（計測値）：Ｖｂ

Next, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows a concrete management method for managing a concrete production process in a concrete production plant under conditions where temperature change should be considered , and FIGS. 2 and 3 schematically show the image thereof. First, as shown in Step 1 of FIG. 1 and FIG. 2, the temperature around the storage unit (the receiving bin in FIG. 2), the temperature of the various materials, and the inside of the kneading unit before mixing the various materials of the concrete. Measure the temperature, and predict the temperature at the completion of concrete production from the relationship between the combination of the measured values of the temperature, the temperature of various materials, the temperature in the kneading part, and the measured temperature at the time of completion of concrete production. Create a prediction formula. In this case, the temperature after completion of concrete production can be expressed by a function of specific heat, density, volume, inflow (out) heat amount of aggregate, cement, water, etc. used, and inflow (out) heat amount is It can be expressed by a function of temperature variation or thermal conductivity. Therefore, the temperatures t1, t2, and t3 in the plurality of (in this case, three) receiving bins (silos for storing the aggregate) and the outdoor temperature (air temperature) T1 in the vicinity thereof, the concrete mixing chamber (kneading part) The temperature T2 inside is measured, and the temperature at the completion of the production of the concrete after x minutes is measured. Then, from the relationship between the measured values of the temperatures t1, t2, and t3 in the receiving bins, the outdoor temperature T1 in the vicinity thereof, and the measured value of the temperature T2 in the kneading chamber and the measured temperature of the concrete at the time of completion of the concrete, A prediction formula for predicting the temperature at the completion of the production of is derived. Here, “x minutes” refers to the production of concrete after aggregates are collected from the receiving bins, delivered to the mixing chamber by a belt conveyor, etc., and mixed for a predetermined number of times (hours). This is the time it takes to complete and is the actual measurement time at the site.
The temperature T after completion of the concrete production is obtained by the following equation (1), for example.

In this case, the relationship between the aggregate temperatures Ta1, Ta2,..., The cement temperature Tc, the water temperature Tm and the outside air temperature stored in the receiving bin is measured in advance to obtain a relational expression.
Moreover, the receiving bin internal temperature which considered the solar radiation becomes following Formula (2). When using aggregates with a plurality of particle sizes, that is, when there are a plurality of receiving bins, the equations are obtained individually.
Various elements for deriving equation (2) are shown in FIG. As shown in FIG. 4, the horizontal solar radiation amount (measured value) at the measurement point is represented by Itv, and the outside air temperature (measured value) is represented by Toa.
Various elements relating to the physical properties inside the receiving bin are expressed as follows.
Receiving bin surface area: A
Internal representative temperature at time n: T (n)
Air heat capacity (known): Cpa
Air density (known): ρa
Space volume (measured value): Va
Material heat capacity (known): Cpb
Material density (known): ρb
Material volume (measured value): Vb

  Next, as shown in step 2 and FIG. 3 of FIG. 1, a storage unit (not shown) that obtains weather prediction information at an arbitrary point and time point at a predetermined time or at a predetermined time is obtained by a weather prediction information notification means. Receiving material bins in FIG. 3) Completion of concrete production based on the above prediction formula by combining the predicted temperature value at the scheduled completion time of surrounding concrete, the temperature of various materials, and the measured value of the temperature in the kneading part Calculate the predicted temperature of the hour. Based on the predicted temperature, it is determined whether or not concrete can be manufactured. In this case, the weather forecast information notification means is, for example, a private weather information company that has acquired a weather forecast business license. This system uses a weather information notification system that delivers to a user terminal such as a personal computer or a mobile phone via the Internet or other communication network at every predetermined time such as 11:00 am or 1 pm To obtain the outdoor temperature of the concrete production site predicted after x minutes (or x hours), and input this into the temperature (outside temperature) term of the prediction formula (Formula 1 and Formula 2). Predict the temperature at the end of production. The predicted temperature is compared with a concrete temperature standard that should not be shipped, and it is judged whether or not the concrete can be manufactured. If the predicted temperature does not exceed the temperature standard, the concrete is manufactured, and the predicted temperature is If the temperature exceeds the temperature standard, the collection of aggregates and the like from the receiving bin is stopped, and the concrete production is interrupted. A concrete production plant generally includes a collection device that automatically collects aggregates, cement, and water necessary for concrete production, and a heating and cooling device that heats or cools these aggregates, cement, and water. Therefore, if it is determined as “No” in the determination of whether or not the concrete can be manufactured, the operation of the collecting device is automatically stopped, and the heating and cooling device is automatically operated so that the aggregate, cement, The water temperature will be adjusted.

  Next, as shown in Step 3 of FIG. 1, the above measured values are accumulated and analyzed. In this case, accumulation of each of the above actual measured values such as increasing the accuracy of the prediction formula by comparing the actual measured value of the concrete after completion of x minutes with the predicted temperature at the completion of concrete manufacture. It is desirable to make the predicted value as close as possible to the actually measured value by analysis and improve the accuracy of the prediction formula as much as possible.

  Then, as shown in Step 4 of FIG. 1, the predicted temperature at the completion of the concrete production is recorded and stored as evidence (management form) together with each actual measurement value. FIG. 5 shows an example of evidence. By creating such evidence, actual measured values such as temperature, predicted temperature value, and work instruction contents executed based on the prediction are recorded together with date and time information, and information necessary for performance certification is stored as a construction management form.

  FIG. 6 shows an outline of a concrete management system for managing the concrete production process of the concrete production plant based on this management method. As shown in FIG. 6, the concrete production plant 1 includes a storage unit (receiving material bin) 2 for storing various materials (aggregate, cement, water) of concrete, a measuring unit (not shown) for measuring various materials, A kneading part (kneading chamber) 3 for kneading materials, a control part (control panel) 4 for operating and controlling these parts, etc., and various concrete materials based on predetermined control programs of the concrete management systems 5A and 5B Is supplied from the storage unit 2 to the kneading unit 3 and kneaded in the kneading unit 3. The concrete management system 5 is disposed in each part of the concrete manufacturing plant 1, a plurality of temperature sensors 6 that measure the temperature of each part, and the temperature of each part that is installed in the concrete manufacturing plant 1 and detected by each temperature sensor 6. And a computer 7 for managing the concrete manufacturing process. In this case, a general-purpose temperature sensor such as a radiation thermometer or a thermocouple is used for each temperature sensor 6, and these temperature sensors are inside the storage unit 2, outdoors near the storage unit 2, and inside the kneading unit 3. The temperature of various materials in the storage unit 2, the outdoor temperature (air temperature) in the vicinity of the storage unit 2, and the temperature in the kneading unit 3 are measured. The computer 7 is a personal computer, and includes a central processing unit composed of an arithmetic unit and a control unit, a storage unit having a program memory and a data memory, an input unit such as a keyboard, an output unit such as a monitor and a printer, and various communication networks. A communication interface or the like that can be connected is provided, and the temperature around the receiving bottle, the temperature of various materials, and the temperature inside the kneading unit are measured by the temperature sensors 6 before mixing the various materials in the storage device. Prediction formula to create a prediction formula for predicting the temperature at the completion of concrete production from the relationship between the combination of the measured values of the temperature of various materials and the temperature in the kneading part and the measured temperature value at the time of completion of concrete production Notifying the creation program 71 and weather forecast information at an arbitrary point and time every predetermined time or every predetermined time Based on the above prediction formula, a combination of the predicted temperature value obtained by the weather forecast information notification means 9 when the concrete around the receiving bin is scheduled to be completed, the temperature of various materials, and the actual measured value of the temperature in the kneading section. A concrete production program including a predicted temperature calculation program 72 for calculating a predicted temperature at the completion of concrete production is stored. In the case of this management system 5, the weather forecast information notifying means 9 sends the weather forecast information in various places throughout the country at a predetermined time interval or at a predetermined time, as described above, by a private weather information company that has obtained a weather forecast business license. Since the weather information notification system distributed to the user terminal via the Internet or other communication network 8 is used every time, the personal computer 7 is connected to the Internet or other communication network 8 via the communication interface. To the weather information notification system 9. The temperature sensor 6 and the personal computer 7 are connected to each other by a network cable or the like. In this way, the temperature at the completion of the concrete production is predicted, and whether or not the concrete can be produced is determined based on the predicted temperature.

  As explained above, in this concrete management method and system, before mixing of various materials, the combination of the temperature around the storage unit, the temperature of the various materials, and the actual measured values of the temperature in the kneading unit, and the time when the concrete production is completed. Create a prediction formula for predicting the temperature at the time of completion of concrete production from the relationship with the measured value of temperature, and notify the weather forecast information at any point and time every predetermined time or every predetermined time Concrete production based on the above prediction formula by combining the predicted temperature value at the time of completion of production around the storage section, the temperature of various materials, and the actual measured values of the kneading section temperature obtained by the weather forecast information notification means Calculates the predicted temperature at completion, and determines whether concrete can be manufactured based on this predicted temperature. Measurement to, it is possible to improve the percentage of correct determination of the production whether the concrete, which makes it possible to prevent the production loss of the concrete.

この式３に、ｔ時間後の予測気温と、製造時の実測コンクリート温度を代入すれば、コンクリートの打設完了時の温度を得ることができる。
なお、Ｔ０、Ｔ１、Ｔ２の関係を定期的に分析することで、式３中の計数０．１５を見なおすことがある。

FIG. 7 shows a concrete management method for managing the concrete placing process in which concrete is transported to a concrete placement place and placed in the concrete placement place after completion of the concrete production under conditions where temperature change should be considered. Is shown. First, as shown in Step 5 of FIG. 7, the temperature at the completion of concrete production, the temperature of the concrete production site, the temperature of the concrete transportation route, and the temperature of the concrete placement site before the concrete placement. The concrete placement is based on the relationship between the measured temperature of the concrete, the manufacturing location of the concrete, the transport route, and the measured temperature at the placement location, and the measured temperature of the concrete at the time of completion of the concrete placement. Create a prediction formula to predict the temperature at completion. In this case, the temperature at the time of completion of placing the concrete is lower than the temperature of the concrete when kneaded in the kneading section due to heat loss during transportation and placing, and the degree of the decrease is 1 hour. The difference between the concrete temperature and the ambient temperature is about 15%. Therefore, we measured the temperature at the time of completion of concrete production, the temperature of the concrete production site, the temperature of the concrete transportation route, the temperature of the concrete placement site, and the temperature at the completion of concrete placement before the concrete placement. To do. Then, a prediction formula for predicting the temperature at the completion of concrete placement is derived from the relationship between the combination of the concrete temperature and the actual measurement values of each temperature and the actual measurement value at the time of completion of concrete placement.
The temperature T after completion of the concrete placement is obtained by the following equation (3), for example.

By substituting the predicted temperature after t hours and the actually measured concrete temperature at the time of manufacture into Equation 3, the temperature at the completion of concrete placement can be obtained.
Note that the count of 0.15 in Equation 3 may be reviewed by periodically analyzing the relationship between T0, T1, and T2.

  Next, as shown in step 6 of FIG. 7, the concrete production place obtained by the weather prediction information notification means for notifying the weather prediction information at an arbitrary point and time every predetermined time or every predetermined time, Based on the prediction formula, the predicted temperature at the completion of concrete placement is calculated based on the combination of the predicted temperature value at the transportation route and the placement location and the temperature at the completion of concrete production. In this case, the predicted temperature at the completion of concrete production calculated in the above concrete management method may be used as the temperature at the time of completion of concrete production, or the measured value at the time of completion of concrete production may be used. Alternatively, the predicted value or the actually measured value is substituted for the temperature T1 at the completion of the production of the concrete of Equation 3. Based on the predicted temperature, it is determined whether or not concrete can be placed.

  Next, as shown in step 7 of FIG. 7, the above measured values are accumulated and analyzed. In this case, accumulation and analysis of each of the above actual measurement values such as increasing the accuracy of the prediction formula by comparing the actual temperature measurement value at the completion of concrete placement and the predicted temperature at the completion of concrete placement. Therefore, it is desirable to make the predicted value as close as possible to the actually measured value and improve the accuracy of the prediction formula as much as possible.

  Then, as shown in Step 8 of FIG. 7, the predicted temperature at the completion of concrete placement is recorded and stored as evidence (management form) together with each actual measurement value (see FIG. 5). By creating such evidence, actual measured values such as temperature, predicted temperature value, and work instruction contents executed based on the prediction are recorded together with date and time information, and information necessary for performance certification is stored as a construction management form.

  FIG. 6 also shows a concrete management system for managing the concrete placing process based on this management method. As shown in FIG. 6, the management system 5B is configured integrally with a concrete management system 5A for managing the above-described concrete manufacturing process. That is, this management system 5B is realized by the computer 7, and the computer 7 (storage device) stores the temperature at the time of completion of concrete production, the temperature of the concrete production site before the concrete is placed, and the concrete transport route. Measure the temperature and the temperature at the concrete placement site, and measure the concrete temperature, the concrete production location, the transportation route, the measured temperature values at the placement site, and the temperature at the time of concrete placement. The prediction formula creation program 73 for creating a prediction formula for predicting the temperature at the time of completion of concrete placement from the relationship with the value, and the weather forecast information at an arbitrary point and time point at a predetermined time interval or at a predetermined time Predicted temperature of concrete production place, transportation route, placement place obtained by weather forecast information notification means 9 that notifies at each time When, in combination with the temperature of the preparation completion of concrete, based on the prediction equation are stored together predicted temperature calculation program 74 for calculating the predicted temperature at the completion pouring concrete. In this case, the actual measured values of the temperature at the concrete production site, the temperature of the concrete transportation route, and the temperature at the concrete placement site are measured by a temperature sensor at each site, and the measured values are transmitted via the communication network 8. The temperature data may be input to the personal computer 7 by using various weather information organizations or the above-mentioned weather forecast information notification system (9). Also good. Moreover, what is necessary is just to acquire using the weather prediction information notification system 9, as mentioned above about the predicted value of the temperature of concrete manufacturing place, a conveyance route, and a placement place. In this manner, the temperature at the completion of concrete placement is predicted, and whether concrete placement is possible is determined based on the predicted temperature.

  As described above, in this concrete management method and system, after completion of the concrete production, the concrete is transported to the concrete placement site, and the concrete is produced in the concrete placement step of placing the concrete at the concrete placement site. A combination of the temperature at the time of completion, the temperature of the concrete production site, the temperature of the concrete transportation route, and the temperature of the concrete placement site before the concrete placement, and the temperature at the completion of concrete placement Create a prediction formula to predict the temperature at the time of completion of concrete placement from the relationship with the actual measurement value of the concrete, and the predicted temperature value of the concrete production place, transportation route, placement place obtained by the weather forecast information notification means Based on the prediction formula, The predicted temperature at the completion of casting is calculated, and based on this predicted temperature, it is judged whether concrete can be placed. Therefore, the temperature at the completion of placing concrete is predicted as accurately as possible, It is possible to improve the correct answer rate for determining whether or not concrete can be placed, and thus it is possible to avoid useless placing work of concrete. In addition, if the predicted temperature value of the concrete placement location and the storage location for various materials of concrete is known using the weather forecast information notification system, the relationship between the temperature at the completion of concrete production and the temperature at the completion of concrete placement In addition, by combining predicted values of temperatures of various materials (which may be measured values), it is possible to determine whether or not the concrete is the most upstream process. Furthermore, when it takes a lot of time from concrete production to placement, such as transporting concrete to a remote location or placing a large amount of concrete, the concrete production is more theoretical than the previous judgment based on empirical values. It can be determined whether it is possible or not, and a series of steps from concrete production to transportation and placement can be carried out continuously without interruption.

  In this management system, various temperature data are directly input to the personal computer via the communication network. However, the various temperature data are imported to another device different from the personal computer, such as a mobile phone or a portable terminal. Alternatively, it may be input to the personal computer by manual input of the personal computer operator.

  Further, in this management method and system, the weather forecast information notification means is a private weather information company that has acquired a weather forecast business license, and the weather forecast information including the temperature in various parts of the country is sent every predetermined time or every predetermined time. However, this type of weather information notification system has been increasing in recent years, and it is most suitable for this management system. In addition to such a weather information notification system, the management system can predict the temperature at any point of the concrete production site, transportation route, and placement site. You may introduce your own weather forecasting system.

1 Concrete production plant 2 Storage section (receiving bin)
3 Kneading section (kneading chamber)
4 Control unit (control panel)
5A Concrete management system 5B Concrete management system 6 Temperature sensor 7 Computer (PC)
71 Prediction Formula Creation Program 72 Prediction Temperature Calculation Program 73 Prediction Formula Creation Program 74 Prediction Temperature Calculation Program 8 Communication Network 9 Weather Prediction Information Notification Means (Meteorological Information Notification System)

Claims (8)

A concrete management method for managing a concrete manufacturing process in which various materials are supplied from a storage unit storing various materials of concrete to a kneading unit and the various materials are kneaded in the kneading unit under conditions where temperature change should be considered Because
Before mixing the various materials, the temperature around the storage unit, the temperature of the various materials, and the temperature inside the kneading unit are measured, and the combination of the temperature, the temperature of the various materials, the measured value of the temperature inside the kneading unit, and A step of creating a prediction formula for predicting the temperature at the time of completion of the concrete production from the relationship with the actual measurement value of the concrete temperature at the time of completion of the concrete production;
Obtained by weather forecast information notification means for notifying the weather forecast information at an arbitrary point and time every predetermined time or every predetermined time, the predicted temperature value around the storage unit at the time when the concrete production is scheduled to be completed, and Calculating the predicted temperature at the completion of the production of the concrete based on the prediction formula by combining the temperature of the various materials before the mixing of the various materials and the actual measurement value of the temperature in the kneading part;
Have
Production of the concrete from the predicted temperature at the time of completion of the concrete production based on the predicted temperature value around the storage unit at the time of completion of the production of the concrete according to the prediction formula and weather prediction information before mixing the various materials To judge whether it is possible,
Concrete management method characterized by that.   The step of accumulating and analyzing each measured value and / or recording and storing the predicted temperature at the completion of concrete production together with each measured value following the step of calculating the predicted temperature at the completion of concrete production. The concrete management method according to 1. A concrete management method for transporting the concrete to the concrete placement site after completion of the concrete production under conditions that should take temperature changes into account, and managing the concrete placement process for placing the concrete in the concrete placement site Because
Measure the temperature at the time of completion of the concrete production and the temperature at the predetermined measurement point and point at the concrete production site, the concrete transport route, and the concrete placement site before the concrete placement. A combination of the temperature at the time of completion of the concrete production, the measured value of each temperature of the concrete production place, the transport route, and the placement place, and the measured value of the concrete temperature at the time of completion of the concrete placement. From the relationship, creating a prediction formula for predicting the temperature at the completion of the concrete placement;
The concrete production place, the transport route, and the placement before the concrete placement, obtained by weather forecast information notification means for notifying the weather forecast information at an arbitrary point and time every predetermined time or every predetermined time A step of calculating a predicted temperature at the time of completion of placing the concrete based on the prediction formula by a combination of the predicted temperature value at the predetermined measurement time and location at the place and the temperature at the time of completion of the concrete production. When,
Have
Before the concrete is placed, the concrete is placed according to the prediction formula and the weather prediction information, the concrete production place, the transport route, the predetermined measurement time at the placement place and the predicted temperature value at the spot. From the predicted temperature of the above, determine whether the concrete can be placed,
Concrete management method characterized by that.   The concrete management method according to claim 3, wherein the predicted temperature at the completion of concrete production calculated by the concrete management method according to claim 1 is used as the temperature at the completion of concrete production.   The concrete management method according to claim 3, wherein an actual measurement value is used as the temperature at the completion of the concrete production.   Subsequent to the step of calculating the predicted temperature at the time of concrete placement completion, the step of accumulating and analyzing each actual measurement value and / or the step of recording and storing the predicted temperature at the time of concrete placement completion together with each actual measurement value. The concrete management method according to any one of claims 3 to 5. A concrete management system for managing a concrete manufacturing process in which various materials are supplied to a kneading unit from a storage unit for storing various materials of the concrete under conditions that should take into account temperature changes, and the various materials are kneaded in the kneading unit Because
Before mixing the various materials, the temperature around the storage unit, the temperature of the various materials, and the temperature inside the kneading unit are measured, and the combination of the temperature, the temperature of the various materials, the measured value of the temperature inside the kneading unit, and Means for creating a prediction formula for predicting the temperature at the time of completion of the concrete production from the relationship with the actual measurement value of the concrete temperature at the time of completion of the concrete production;
Obtained by weather forecast information notification means for notifying the weather forecast information at an arbitrary point and time every predetermined time or every predetermined time, the predicted temperature value around the storage unit at the time when the concrete production is scheduled to be completed, and Means for calculating the predicted temperature at the completion of the production of the concrete based on the prediction formula by combining the temperature of the various materials before the mixing of the various materials and the measured value of the temperature in the kneading part,
With
Production of the concrete from the predicted temperature at the time of completion of the concrete production based on the predicted temperature value around the storage unit at the time of completion of the production of the concrete according to the prediction formula and weather prediction information before mixing the various materials To judge whether it is possible,
Concrete management system characterized by that. A concrete management system for transporting the concrete to the concrete placement site after completion of the concrete production under conditions that should take into account temperature changes and managing the concrete placement process for placing the concrete in the concrete placement site Because
Measure the temperature at the time of completion of the concrete production and the temperature at the predetermined measurement point and point at the concrete production site, the concrete transport route, and the concrete placement site before the concrete placement. A combination of the temperature at the time of completion of the concrete production, the measured value of each temperature of the concrete production place, the transport route, and the placement place, and the measured value of the concrete temperature at the time of completion of the concrete placement. From the relationship, means for creating a prediction formula for predicting the temperature at the time of completion of the concrete placement,
The concrete production place, the transport route, and the placement before the concrete placement, obtained by weather forecast information notification means for notifying the weather forecast information at an arbitrary point and time every predetermined time or every predetermined time Means for calculating the predicted temperature at the completion of the concrete placement based on the prediction formula by combining the predicted temperature value at the predetermined measurement point and point at the place and the temperature at the completion of the concrete production When,
With
Before the concrete is placed, the concrete is placed according to the prediction formula and the weather prediction information, the concrete production place, the transport route, the predetermined measurement time at the placement place and the predicted temperature value at the spot. From the predicted temperature of the above, determine whether the concrete can be placed,
Concrete management system characterized by that.

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