The structural behavior of Reinforced Concrete (RC) elements damaged by pitting corrosion is a main challenge to overcome in order to guarantee the structural safety and, eventually, to properly design the strengtening intervention. However, the effects of pitting corrosion on RC beam behavior in flexure is still under discussion on the scientific community. In this context, the present paper presents an analytical and numerical study focused on the effects of pitting corrosion on the flexural behavior of RC elements characterized by a longitudinal reinforcement ration of about 0.8%. In particular, section and beams analyses were carried out on RC elements were longitudinal rebars were properly modelled to take into account pitting corrosion. Numerical results showed how pitting corrosion can affect both flexural strength and ductility, and how this can be different at sectional or structural level. Finally, results showed that the evaluation of ductility of a RC beam at sectional level is no longer reliable when a thresolde value of corrosion attack is overcome.
Influence of pitting corrosion on the flexural behavior of reinforced concrete beams
Piemonti A.;Plizzari G.;Conforti A.
2025-01-01
Abstract
The structural behavior of Reinforced Concrete (RC) elements damaged by pitting corrosion is a main challenge to overcome in order to guarantee the structural safety and, eventually, to properly design the strengtening intervention. However, the effects of pitting corrosion on RC beam behavior in flexure is still under discussion on the scientific community. In this context, the present paper presents an analytical and numerical study focused on the effects of pitting corrosion on the flexural behavior of RC elements characterized by a longitudinal reinforcement ration of about 0.8%. In particular, section and beams analyses were carried out on RC elements were longitudinal rebars were properly modelled to take into account pitting corrosion. Numerical results showed how pitting corrosion can affect both flexural strength and ductility, and how this can be different at sectional or structural level. Finally, results showed that the evaluation of ductility of a RC beam at sectional level is no longer reliable when a thresolde value of corrosion attack is overcome.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
