International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 9, September 2017

International Journal of Science and Technology


Sonic Auscultation and Mechanical Characterization of Metallic & Synthetic Fiber-Reinforced Self-Compacting Concrete

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Author M.Benaicha, O.Jalbaud, A.Alaoui Hafidi, Y.Burtschell
On Pages 91-100
Volume No. 3
Issue No. 1
Issue Date January, 2013
Publishing Date January, 2013
Keywords ultrasonic velocity, transmission mode, homogeneity, fiber-reinforced self-compacting concrete.


Abstract

This experimental study focuses on the relationship between ultrasonic velocity measured by sensors of 50 mm diameter and 54 kHz frequency and elastic modulus and compressive strength of concrete. Samples (prismatic: 10x10x40cm and cylindrical: 16x32cm) are made with five different concrete mixtures (metallic and synthetic fiber-reinforced self-compacting concrete). The ultrasonic velocity measurements were determined with direct, semi-direct and indirect transmission mode. This methodology is based on European standard EN 12504-4. The results showed that sonic auscultation can be very useful to study the homogeneity of fiber-reinforced concrete and a beneficial supplement to characterize the quality of the concrete. Based on these experimental results, an analytical formula was set up to evaluate the compression strength of concrete by determining the velocity of sound in concrete. The resulting calibration curves for strength estimation were compared with others from previous published literature.

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