A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONTROL SYSTEM FOR KNEADING TEMPERATURE OF CONCRETE
PROBLEM TO BE SOLVED: To provide a control system for the kneading temperature of a shotcrete capable of accurately measuring a concrete temperature at optional time point in a mixer using a temperature measurement system in addition to measurement of temperature in various concrete materials, and capable of efficiently, economically controlling the kneading temperature by: measuring a concrete temperature at a construction site in consideration of temperature change involving time elapse after kneading completion; and setting the concrete temperature using the estimated equation of a kneading finish temperature obtained from the specific heat and mass or heat capacity of each material for setting the target range of the kneading temperature.SOLUTION: A control system for kneading temperature of concrete is characterized by: measuring the temperature of various materials of concrete; obtaining the heat capacity values of various materials for setting the target range of the concrete kneading temperature with reference to measured temperature of various materials ; setting a heating or cooling temperature for a kneading water and an aggregate using the equation estimating a kneading finish temperature from the heat capacity values; and controlling the concrete kneading temperature by heating or cooling the materials.SELECTED DRAWING: Figure 1
【課題】各種コンクリート材料温度の測定に加え、温度測定システムを用いたミキサー内での任意時点のコンクリート温度を正確に測定でき、練り上がり完了後の時間経過に伴う温度変化を考え施工場所でコンクリート温度を測定し、練り混ぜ温度の目標範囲とするための各材料の比熱と質量もしくは熱容量から求める練り上がり温度の推定式を用いて設定し、効率的に経済的に練り混ぜ温度の制御が行える吹付けコンクリートの練り上がり温度の制御システムを提供することを目的とする。【解決手段】コンクリートの各種材料の温度を測定し、測定した材料の温度を参考にコンクリート練り混ぜ温度の目標範囲とするための各種材料の熱容量値を求め、熱容量値から練り上がり温度を推定する式を用いて、練り混ぜ水、骨材の加温温度あるいは冷却温度を設定し、材料の加温あるいは冷却によりコンクリートの練り混ぜ温度の制御を行うことを特徴とする。【選択図】 図1
CONTROL SYSTEM FOR KNEADING TEMPERATURE OF CONCRETE
PROBLEM TO BE SOLVED: To provide a control system for the kneading temperature of a shotcrete capable of accurately measuring a concrete temperature at optional time point in a mixer using a temperature measurement system in addition to measurement of temperature in various concrete materials, and capable of efficiently, economically controlling the kneading temperature by: measuring a concrete temperature at a construction site in consideration of temperature change involving time elapse after kneading completion; and setting the concrete temperature using the estimated equation of a kneading finish temperature obtained from the specific heat and mass or heat capacity of each material for setting the target range of the kneading temperature.SOLUTION: A control system for kneading temperature of concrete is characterized by: measuring the temperature of various materials of concrete; obtaining the heat capacity values of various materials for setting the target range of the concrete kneading temperature with reference to measured temperature of various materials ; setting a heating or cooling temperature for a kneading water and an aggregate using the equation estimating a kneading finish temperature from the heat capacity values; and controlling the concrete kneading temperature by heating or cooling the materials.SELECTED DRAWING: Figure 1
【課題】各種コンクリート材料温度の測定に加え、温度測定システムを用いたミキサー内での任意時点のコンクリート温度を正確に測定でき、練り上がり完了後の時間経過に伴う温度変化を考え施工場所でコンクリート温度を測定し、練り混ぜ温度の目標範囲とするための各材料の比熱と質量もしくは熱容量から求める練り上がり温度の推定式を用いて設定し、効率的に経済的に練り混ぜ温度の制御が行える吹付けコンクリートの練り上がり温度の制御システムを提供することを目的とする。【解決手段】コンクリートの各種材料の温度を測定し、測定した材料の温度を参考にコンクリート練り混ぜ温度の目標範囲とするための各種材料の熱容量値を求め、熱容量値から練り上がり温度を推定する式を用いて、練り混ぜ水、骨材の加温温度あるいは冷却温度を設定し、材料の加温あるいは冷却によりコンクリートの練り混ぜ温度の制御を行うことを特徴とする。【選択図】 図1
CONTROL SYSTEM FOR KNEADING TEMPERATURE OF CONCRETE
コンクリートの練り上がり温度制御システム
HIRAMA AKINOBU (author) / TSUTSUI TAKANORI (author) / KUMAGAI KOJU (author) / MATSUDA HIROO (author) / TAKINAMI MASUMI (author) / KOBAYASHI SATOSHI (author) / HATA HIDEAKI (author) / ENDO NOBUHIRO (author)
2017-08-03
Patent
Electronic Resource
Japanese
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