Verification of a New Semidiscrete Beam Model for Fiber-Reinforced Concrete Beams
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 7
Abstract
This article shows through the analysis of three independent tests that the presented new semidiscrete analytical (SDA) beam model is efficiently applicable in the evaluation of test results. The model is based on fracture mechanics, takes the real distribution of the macrofibers into consideration in the critical cross-section of the beam, and uses a precise approximation of the pull-out behavior of the fibers. The SDA model is applicable to evaluate synthetic and also steel fiber reinforced concrete beams. Furthermore, it is shown that the new method can predict the changes of the residual loadbearing capacity caused by the different length, diameter, tensile strength, maximal friction stress, or other features of the fiber with the use of only one series of experiments with given fiber parameters (e.g., tests with only one fiber length and diameter). Thus, the application of the SDA model can decrease the cost and time of testing new types of fibers because the required number of samples and, therefore, the total time of the lab tests can be radically decreased.
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Data Availability Statement
Some or all data, models, or code used during the study were provided by a third party (experimental data of Olivér Czoboly, Károly Péter Juhász, and Vivien Kis). Direct requests for these materials may be made to the provider, as indicated in the “Acknowledgments.”
Some or all data, models, or code generated or used during the study are available from the corresponding author by request (SageMath code for the calculations).
Acknowledgments
The authors would like to thank Olivér Czoboly, Vivien Kis, and Károly Péter Juhász for sharing the experimental results.
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Information & Authors
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 7 • July 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Apr 30, 2019
Accepted: Dec 9, 2019
Published online: Apr 18, 2020
Published in print: Jul 1, 2020
Discussion open until: Sep 18, 2020
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