PSI - Issue 70

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ScienceDirect

Procedia Structural Integrity 70 (2025) 183–190

Structural Integrity and Interactions of Materials in Civil Engineering Structures (SIIMCES-2025) Performance analysis of Fibre Reinforced Concrete with a binary blend of Steel and Polyester Fibres

R. Ashwathi a,* , A. Mohanraj a , M. Seenirajan b , S. Yuvaraj c , A. Dinesh d a Department of Civil Engineering, Bannari Amman Institute of Technology, Sathyamangalam 638401, Tamilnadu, India b Department of Civil Engineering, Sengunthar Engineering College, Tiruchengode 637205, Tamilnadu, India c Department of Civil Engineering, KPR Institute of Engineering and Technology, Coimbatore 641402, Tamilnadu, India d Department of Civil Engineering, Sri Ramakrishna Engineering College, Coimbatore 641022, Tamilnadu, India

Abstract Fibre Reinforced Concrete, one of the transformative advancements in the modern erection as it has a greater contribution towards the structural behaviour particularly due to its enriched mechanical properties, and capability to address the confines over conventional concrete. This research examines the incorporation of steel fibre and polyester fibre along its hybrid combination to address the limitations over traditional one including nominal tensile strength and susceptibility to cracking. It could extend the life of the structure with reduction of cost and improved sustainability. This hybrid composite improves the overall performance under varying loading conditions. In specific, steel fibres aids to greater tensile strength coupled with crack resistance while polyester fibres enhance the improved toughness and impact resistance. On incorporating these fibres either separately or in the hybrid form, the mechanical strength and resistance to shrinkage cracking gets enhanced thereby improving the overall performance of the structure. The ultimate purpose of the investigation is to identify the optimised percentage incorporation of fibre into the structure. Experimental investigation revealed that the optimum percentage of fibre enhanced the structural behaviour particularly in a high stress environment. FRC is a crucial finding in tackling the contemporary challenges, flagging the way towards the resilient and effective infrastructure solutions. © 2025 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 the responsibility of International Conference on Structural Integrity Organizers

Keywords: Fibre Reinforced Concrete; Steel fibre; Polyester fibre; Structural integrity; Sustainability

* Corresponding author. Tel.: +91-7904056447 E-mail address: ashwathi@bitsathy.ac.in; ashwathisingh@gmail.com

2452-3216 © 2025 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 the responsibility of International Conference on Structural Integrity Organizers 10.1016/j.prostr.2025.07.042