INFLUENCE OF PIPING ROUTE AND MEASUREMENT CONDITIONS ON THE SIMPLE EVALUATION OF CONCRETE PUMPABILITY

配管及び計測条件がコンクリートの簡易圧送性評価に与える影響

In this study, the authors used two kinds of pipes of different diameters, with bent pipes of different angles and numbers, equipped with an acceleration sensor for test pumping at the actual site in order to study their influence of the simple evaluation of concrete pumpability. As a result, the authors were able to confirm that the frequency of vibration generated by the friction and collision of aggregates in concrete and the pipe walls was approximately 1,000Hz to 1,500Hz regardless of the size of pipe diameters, and demonstrated that vibration peaked in the bent pipe closest to the concrete pumping vehicle regardless of the size of the angle of the bent pipe. The authors also indicated that a difference in pumpability could be evaluated using irregularities in acceleration values and the size of the peak value in amplitude. For these evaluations, the results of measurements taken in the bent pipe at the first position of the concrete pumping vehicle and the horizontal pipe beyond the bent pipe was shown to be effective.本研究では実機の試験圧送でベント管の角度や数と配管径の異なる2種類の配管条件が、配管に加速度センサーを取り付けて行うコンクリートの簡易圧送性評価に与える影響を検討した。その結果、配管径の大きさに関係なく、コンクリート中の骨材と管壁の摩擦、衝突によって生じる振動の周波数は1,000～1,500Hz付近に確認できること、ベント管の角度の大きさに関係なく、振幅のピーク値はポンプ車に一番近い位置のベント管で高くなることを示した。また、ポンプ車に近い位置のベント管とその先の水平管で計測した結果より、加速度の値の乱れや振幅のピーク値の大きさから圧送性の違いを評価できることを示した。

• Record URL:
  • https://doi.org/10.14250/cement.68.268
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=INFLUENCE+OF+PIPING+ROUTE+AND+MEASUREMENT+CONDITIONS+ON+THE+SIMPLE+EVALUATION+OF+CONCRETE+PUMPABILITY&author=S.+HASHIMOTO&author=Y.+EMOTO&author=T.+WATANABE&author=C.+HASHIMOTO&publication_year=2014
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09163182
• Authors:
  • HASHIMOTO, Shin-ichiro
  • EMOTO, Yukio
  • WATANABE, Takeshi
  • HASHIMOTO, Chikanori
• Publication Date: 2014

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: pp 268-274
• Serial:
  • Cement Science and Concrete Technology
  • Volume: 68
  • Issue Number: 1
  • Publisher: Japan Cement Association
  • ISSN: 0916-3182
  • EISSN: 2187-3313
  • Serial URL: https://www.jstage.jst.go.jp/browse/cement/-char/en
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Pipe; Pumped concrete; Routes; Sensors; Vibration
• Subject Areas: Construction; Materials; Pipelines; I32: Concrete; I50: Construction and Supervision of Construction;

Filing Info

• Accession Number: 01564500
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: May 26 2015 4:12PM