Analysis of the attenuative behaviour of accelerated cement based materials through a series of ultrasound Pulse Echo measurements

Khatib, N.; Ouacha, E.; Faiz, B.; Ezzaidi, M.; Banouni, H.

Growing Science » Engineering Solid Mechanics » Analysis of the attenuative behaviour of accelerated cement based materials through a series of ultrasound Pulse Echo measurements

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Engineering Solid Mechanics

ISSN 2291-8752 (Online) - ISSN 2291-8744 (Print) Quarterly Publication Volume 7 Issue 2 pp. 109-120 , 2019

Analysis of the attenuative behaviour of accelerated cement based materials through a series of ultrasound Pulse Echo measurements Pages 109-120 Download PDF

Authors: Nabil Khatib, El Houssaine Ouacha, Bouazza Faiz, Mohamed Ezzaidi, Hicham Banouni

DOI: 10.5267/j.esm.2019.4.002

Keywords: Non-destructive testing, Ultrasound, Pulse echo method, Mortar, Alkaline Accelerator

Abstract: In this study, the effects of alkaline accelerating admixture and its dosage on cementitious material’s behavior at early ages were evaluated through a series of ultrasound Pulse echo measurements. Thus, those measurements consist on following the evolution of frequency dependent attenuation coefficient during cementitious material age. Four stages can be identified on the attenuation coefficient vs. mortar age graphs, indicating that the development of the attenuation parameter is closely related to the setting and the hardening phenomena. Also, the ultrasound histograms, representing the evolution of the different echoes backscattered by the media of the container, filled with cementitious material’s samples, were characterized in order to assess the attenuative effect of alkaline accelerator and its dosage during the setting and the hardening period. Thus, the combined use of ultrasound P-wave measured density and young modulus parameters results in a comprehensive ultrasound method that gives a more effective picture of the void volume and resistivity of the accelerated cementitious materials. Ultrasound P-waves were generated using a 1 MHz central frequency immersion transducer and mortar samples were prepared with Portland composite cement CPJ 45.

How to cite this paper

 Khatib, N., Ouacha, E., Faiz, B., Ezzaidi, M & Banouni, H. (2019). Analysis of the attenuative behaviour of accelerated cement based materials through a series of ultrasound Pulse Echo measurements.Engineering Solid Mechanics, 7(2), 109-120.

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