PSI - Issue 64

Antonio Bossio et al. / Procedia Structural Integrity 64 (2024) 56–64 Author name / Structural Integrity Procedia 00 (2019) 000–000

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Main limits of the proposed model are the assumption of uniform corrosion and uncertainty on oxide volumetric expansion, the assumption of sudden drop of lateral pressure around bars at crack development and the bond strength linear reduction afterwards up to disengagement of bars when oxide occupies the ribs groove. Overall, this research provides valuable insights into how different factors influence the bond between corroded rebar and concrete. This can help researchers to plan future experimental activities and help engineers to design and maintain RC structures more effectively. Acknowledgements The authors gratefully acknowledge Accordo CSLLPP-ReLUIS attuativo del DM 578 del 17 dicembre 2020 e 204 del 1° luglio 2022 (WP–4 – Task 4.1 Durability Issues in bridges). References Bossio A., Lignola G.P., Fabbrocino F., Monetta T., Prota A., Bellucci F., Manfredi G. 2017. Nondestructive assessment of corrosion of reinforcing bars through surface concrete cracks. fib Structural Concrete, Volume18, Issue1, Pages 104-117. https://doi.org/10.1002/suco.201600034 Bossio A., Lignola G.P., Prota A. 2018. An overview of assessment and retrofit of corroded reinforced concrete structures, Procedia Structural Integrity, 11, pp. 394 - 401, https://doi.org/10.1016/j.prostr.2018.11.051 Bossio A., Monetta T., Bellucci F., Lignola G.P., Prota A., 2015. Modeling of concrete cracking due to corrosion process of reinforcement bars, Cement and Concrete Research, Volume 71, Pages 78-92, https://doi.org/10.1016/j.cemconres.2015.01.010. Bossio, A. Montuori, M. Bellucci, F. Lignola, G.P. Prota, A. Cosenza, E. & Manfredi, G. 2011. Analytical modeling of reinforcement corrosion effects on RC members degradation, 2nd Workshop The new boundaries of structural concrete: 205-213 Ancona: Imready. Carè, S. Nguyen, Q.T. L’Hostis, V. & Berthaud, Y. 2008. Mechanical properties of the rust layer induced by impressed current method in reinforced mortar, Elsevier Cement and concrete research 38: 1079-1091 Coronelli, D. 2002. Corrosion cracking and bond strength modeling for corroded bars in Reinforced Concrete. ACI structural journal 99(3): 267 276 EC2 Eurocode 2 (EN 1992-1-1:2004: E) 2004. Design of concrete structures-Part 1-1 General rules and rules for buildings. Brussels MC10 fib Model Code for Concrete Structures 2010 (2013) Ernst & Sohn, Berlin. ISBN: 978-3-433-03061-5 Lignola, G.P. Prota, A. Manfredi, G. & Cosenza, E. 2008 Unified theory for confinement of RC solid and allow circular columns, Elsevier Composites Part B 39: 1151, https://doi.org/10.1016/j.compositesb.2008.03.007 Lignola, G.P. Prota A. & Manfredi, G. 2014 Simplified modeling of rectangular concrete cross-sections confined by external FRP wrapping, Polymers 6: 1187-1206, https://doi.org/10.3390/polym6041187 Lignola, G. P. Menichino, G.P. Montuori, M. Bellucci, F. Cosenza, E. & Manfredi, G. 2010. FEM analysis of reinforcement corrosion effects on Benenato A., Ferracuti B., Imperatore S., Lignola G.P., 2022. Corrosion level estimation by means of the surface crack width, Construction and Building Materials, Volume 342, Part A, 128010, https://doi.org/10.1016/j.conbuildmat.2022.128010

RC members degradation. 1st Workshop the new boundaries of structural concrete, Salerno: CUES 107-114. Pedeferri P. & Bertolini L. 2000. La durabilità del calcestruzzo armato Milano: McGraw-Hill. In Italian UNI EN 206-1. CEN 2006. Concrete - Part 1: Specification, performance, production and conformity. Brussels