Continuous Quality Control Method for Fresh Concrete Using Probe inside Drum

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Other Title
  • アジテータ車のドラム内に設置したプローブによるコンクリート品質の連続管理
  • アジテータシャ ノ ドラム ナイ ニ セッチ シタ プローブ ニ ヨル コンクリート ヒンシツ ノ レンゾク カンリ

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Abstract

Continuous concrete quality control equipment is a technology introduced from overseas that consists in a measuring instrument featuring a built-in strain gauge and thermometer (hereafter, “probe”) attached inside the drum on an agitator truck, making it possible to estimate slump from concrete loading to unloading, as well as concrete temperature and loading weight. The information obtained from the probe can be grasped in real time through wireless communication, thus enabling continuous control of the quality of ready-mixed concrete during transportation. This paper provides an overview of said equipment along with application examples, examining the estimation accuracy of slump, temperature and other characteristics of various types of concrete, as well as the applicability of this technology to realtime measurement. The results show that this equipment allows highly accurate estimation of slump and temperature, and since it allows monitoring of slump and other characteristics over time, it is deemed to be useful for quality control.

Journal

  • Concrete Journal

    Concrete Journal 54 (4), 353-361, 2016

    Japan Concrete Institute

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