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arXiv · 2510.06272

Non-destructive diagnostics of fiber orientation in large planar fiber-reinforced concrete specimens

Václav Papež·Karel Künzel·Petr Konrád·Kristýna Carrera·Petr Konvalinka
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Abstract

The mechanical performance of fiber-reinforced concrete is critically dependent on the orientation and concentration of its reinforcing fibers. This paper presents a non-destructive method for diagnosing fiber parameters in large planar specimens. The proposed technique utilizes an electromagnetic measurement system using electrical coils with commercial LCR meters, but also a novel custom-made meter suitable for factory environments, offering a practical solution for quality control in prefabrication of high-performance structural elements. This study details the theoretical background, experimental setup and methodology, and provides an evaluation of the diagnostic system's effectiveness and accuracy. The results demonstrate a strong correlation between the electromagnetic measurements and the actual fiber parameters, confirming the method's reliability.

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Václav Papež, Karel Künzel, Petr Konrád, Kristýna Carrera, Petr Konvalinka. 2025-10-06. Non-destructive diagnostics of fiber orientation in large planar fiber-reinforced concrete specimens. https://arxiv.org/abs/2510.06272

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