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Ultrasonic monitoring of setting and hardening of cement mortar—A new device

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Abstract

An almost fully automated device has been developed which is suitable for the continuous monitoring of setting and hardening of cement paste and fresh mortar. Some special features are presented and discussed with respect to the reliable contact of ultrasound transmitter and recorder. The analysis of the US signals employs a modified Hinkley criterion.

Résumé

Un appareil presque entièrement automatisé a été développé afin de pouvoir exercer un contrôle continu sur la prise et le durcissement de la pâte de ciment et du mortier frais. L’article présente certaines caractéristiques spécifiques et aborde la fiabilité du contact d’un transmetteur-enregistreur à ultrasons. L’analyse des signaux ultrasons se base sur l’utilisation du critère de Hinkley modifié.

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References

  1. Keating, J., Hannant, D. J. and Hibbert, A. P., ‘Comparison of shear modulus and pulse velocity techniques to measure the build-up structure in fresh cement pastes used in oil well cementing’,Cement and Concrete Res. 9 (1989) 554–566.

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  3. Große, C. and Reinhardt, H. W., ‘Locating automatically the sources of sound’,MP Materialprüfung/Materials Testing 41 (1999) 342–347 (in German).

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  4. Herb, A., Große, C. and Reinhardt, H. W., ‘Ultrasonic testing device for mortar’,Otto Graf Journal 10 (1999) 144–155.

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Authors and Affiliations

  1. Institut für Werkstoffe im Bauwesen, University of Stuttgart, Stuttgart, Germany

    H. W. Reinhardt, C. U. Große & A. T. Herb

Authors
  1. H. W. Reinhardt
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  2. C. U. Große
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  3. A. T. Herb
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Additional information

Editorial Note Prof. Dr.-Ing. Hans Wolf Reinhardt is a RILEM Fellow, Senior and Titular Member. He is also a Member of the Board of Editors of Materials and Structures and Associate Editor of Concrete Science and Engineering. He is Chairman of the new RILEM TC ATC ‘Advanced testing of cement-based materials during setting and hardening’.

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Reinhardt, H.W., Große, C.U. & Herb, A.T. Ultrasonic monitoring of setting and hardening of cement mortar—A new device. Mat. Struct. 33, 581–583 (2000). https://doi.org/10.1007/BF02480539

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  • DOI: https://doi.org/10.1007/BF02480539

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