Influence of fiber properties on the inductive method for the steel-fiber-reinforced concrete characterization
2016
Juan-García, Pablo | Torrents Dolz, Josep M. | López Carreño, Rubén-Daniel | Pialarissi Cavalaro, Sergio Henrique | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental | Universitat Politècnica de Catalunya. IEB - Instrumentació Electrònica i Biomèdica | Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
The inductive method has shown to be a good method for the estimation of fiber dosage in steel-fiber-reinforced concrete. The current formulations reported a strong correlation between inductance and fiber content, as well as orientation. The objective of this paper is to study how the inductive measurements are affected by fiber properties, such as its dimensions, magnetic characteristics, and sample temperature. The results obtained from numerical, simulated, and experimental data propose a shape factor to be applied in the measurements to take into account the aspect ratio of fibers. They also show that the magnetic composition of the fibers is of great importance. As for temperature, the error introduced is less than 1%, so a corrective factor is not essential.
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