Investigation of the Effect of Reinforcement Type on the Flexural Performance of Slab Tracks
Publication: Journal of Transportation Engineering, Part A: Systems
Volume 149, Issue 6
Abstract
This paper presents the results of a comprehensive experimental study on the flexural performance of ballastless discrete precast slab tracks with two alternative reinforcement types. These are the precast slab tracks produced using ordinary reinforcement [nonpost-tensioned (NPT)] and the precast slab tracks produced using post-tensioned (PT) reinforcement. The study aims to compare the flexural performances of NPT- and PT-type slab tracks using three-point bending tests, even though they continuously sit on the ground with different rigidities in real-life applications. The tests performed on four full-scale slab tracks in the longitudinal and transversal directions resulted in the first cracking and the ultimate loads were greater in PT specimens. Also, the maximum crack widths and residual displacements of PT specimens were smaller. Although the aforementioned performance parameters of NPT-type slab tracks are relatively behind those of PT-type slab tracks, their overall response is still acceptable, with the advantages of easier production and lower cost.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The study was conducted in the Structural and Earthquake Engineering Laboratory of Istanbul Technical University. It was achieved in the framework of the ITUNOVA Technology Transfer Office Research Project “Tracks Development of New Generation Precast Sleepers and Slab.” The financial support provided by YAPIRAY Railway Construction Systems Industry and Trade through this project is greatly appreciated. All the support is gratefully acknowledged.
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Published In
Journal of Transportation Engineering, Part A: Systems
Volume 149 • Issue 6 • June 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Sep 22, 2022
Accepted: Jan 27, 2023
Published online: Mar 27, 2023
Published in print: Jun 1, 2023
Discussion open until: Aug 27, 2023
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