PSI - Issue 66

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2025) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 66 (2024) 181–194

8th International Conference on Crack Paths Effect of Reinforcement Percentage and Corrosion on Fracture Properties of Reinforced Concrete Ram Lal Riyar a *, Sonali Bhowmik b

a Research Scholar, Dept of Civil Engineering, National Institute of Technology, Rourkela, India, 769008 b Asst. Professor, Dept of Civil Engineering, National Institute of Technology, Rourkela, India, 769008

Abstract Reinforced Concrete, extensively utilized in construction worldwide for various infrastructural purposes, remains a material that harbors several gaps in our understanding of its behavior. The intricate nature of reinforced concrete's behavior arises from the interplay between the concrete itself and the longitudinal reinforcement it encompasses. In-depth exploration of fracture within reinforced concrete proves to be particularly challenging, owing to micro-structural alterations in the concrete, and intricate interactions between reinforcement and concrete. This research aims to tackle the challenges by conducting experimental investigations focused on fracture behavior. By examining the impact of different beam sizes and reinforcement ratios, the study seeks insights into fracture mechanisms that lead to failure under static load. Additionally, it aims to determine crucial fracture properties, including critical crack length (a c ), fracture energy (G f ), and fracture toughness (K IC ), through a three-point bending test facilitated by a servo-hydraulic machine. The impact of corrosion on the fracture characteristics of reinforced concrete is another factor studied. The digital image correlation technique calculates the fracture process zone length. It is concluded that the increase in reinforcement will increase the resistance against crack propagation and by increasing the size of the beam, crack propagation increases. © 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) © 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 responsibility of CP 2024 Organizers

Peer-review under responsibility of CP 2024 Organizers Keywords: Concrete; Fracture properties; Reinforcement; corrosion

1. Introduction Quasi-brittle material like concrete extensively utilized in diverse engineering domains for developing

* Corresponding author.. E-mail address: 521ce1013@nitrkl.ac.in

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 responsibility of CP 2024 Organizers

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 responsibility of CP 2024 Organizers 10.1016/j.prostr.2024.11.069