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Geomechanics and Engineering
  Volume 13, Number 3, September 2017 , pages 371-384

Ultrasonic velocity as a tool for mechanical and physical parameters prediction within carbonate rocks
Mohamed Abdelhedi, Monia Aloui, Thameur Mnif and Chedly Abbes

    Physical and mechanical properties of rocks are of interest in many fields, including materials science, petrophysics, geophysics and geotechnical engineering. Uniaxial compressive strength UCS is one of the key mechanical properties, while density and porosity are important physical parameters for the characterization of rocks. The economic interest of carbonate rocks is very important in chemical or biological procedures and in the field of construction. Carbonate rocks exploitation depends on their quality and their physical, chemical and geotechnical characteristics. A fast, economic and reliable technique would be an evolutionary advance in the exploration of carbonate rocks. This paper discusses the ability of ultrasonic wave velocity to evaluate some mechanical and physical parameters within carbonate rocks (collected from different regions within Tunisia). The ultrasonic technique was used to establish empirical correlations allowing the estimation of UCS values, the density and the porosity of carbonate rocks. The results illustrated the behavior of ultrasonic pulse velocity as a function of the applied stress. The main output of the work is the confirmation that ultrasonic velocity can be effectively used as a simple and economical non-destructive method for a preliminary prediction of mechanical behavior and physical properties of rocks.
Key Words
    ultrasonic velocity; non-destructive testing; carbonate rocks; compressive strength; UCS; porosity; density
(1) Mohamed Abdelhedi, Monia Aloui, Thameur Mnif, Chedly Abbes:
Universite de Sfax Faculté des Sciences de Sfax, Route de Soukra, Département des Sciences de la Terre, BP 802, 3018 Sfax, Tunisie;
(2) Mohamed Abdelhedi, Monia Aloui, Chedly Abbes:
Laboratoire de Modélisation des Systèmes Géologiques et Hydrologiques (LR16ES17), Faculté des Sciences de Sfax, BP 802, 3018 Sfax, Tunisie;
(3) Thameur Mnif:
Laboratoire de Géoressources, Matériaux, Environnement et Changements Globaux (LR/13/ES-23), Faculte des Sciences de Sfax, BP 802, 3018 Sfax, Tunisie.

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