PSI - Issue 82

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2026) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 82 (2026) 234–238

© 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers Abstract This study aims to assess the prolonged performance of concrete C20/25 containing the local tire-derived steel fibers (TDFs) from Bratislava, Slovakia, after 599 days. The pilot research evaluates two fiber combinations: 0.50 and 0.70 per concrete volume, a hybrid mix (CTF) comprising 70% TDF and 30% industrial hook-end steel fiber, IHF. A mix with 0.50 IHF per concrete volume is used for comparison. The performance of the mixtures is assessed through water absorption, carbonation, and tensile strength. © 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers Keywords: Tire-derived steel fibers; Hybrid fibers; Concrete; Long-term behavior; Water absorption 1. Introduction Waste tires are among the major contributors to global solid waste, posing significant environmental and disposal challenges (Godlewska, 2017; Mmereki et al., 2019). In recent years, the incorporation of tire-derived steel fibers (TDFs) into concrete has gained considerable attention as a sustainable recycling approach (Awolusi et al., 2021; Zia et al., 2022). Numerous studies have investigated the mechanical performance of TDF-reinforced concrete, particularly focusing on compressive strengths ranging between 20 MPa and 45 MPa (Alabdulkarim et al., 2024; Li et al., 2022; Su et al., 2023). 8th International Conference on Structural Integrity and Durability (ICSID2025) Prolonged Behavior of Normal-Strength Concrete Reinforced with Tire-Derived Steel Fibers Asad Zia a,b *, Ivan Holly a a University of Technology, Faculty of Civil. Eng., Department of Concrete Structures and Bridges, Bratislava, 81105, Slovakia b Centre for Critical Infrastructure, School of Civil Engineering, University College Dublin, Belfield, Ireland

* Corresponding author. Tel.: +421-951-881403 E-mail address: asad.zia@stuba.sk

2452-3216 © 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers 10.1016/j.prostr.2026.04.036