Corrosion of rebars, causing a reduction of their cross-section and ductility, can significantly alter the structural behavior of reinforced concrete elements. Two main approaches can be found in literature: a first one in which corrosion effects are accounted for, in an engineering approach, through a modification of the constitutive law; a second one considering a reduction of the rebar area. In both cases a decay of the ultimate strain is considered. The work includes an experimental ongoing survey on artificially corroded steel rebars embedded in concrete prisms. Different diameters and corrosion degrees are considered. The results of the monotonic tensile tests allow the calibration of suiTable decay laws for the nominal yielding, ultimate strength, and ultimate strain. The study also addresses corrosion collecting and analyzing existing literature. to provide useful data and serve as a valuable resource for developing phenomenological degradation laws for corroded steel rebars.
Bartoli, M., Di Carlo, F., Rinaldi, Z. (2024). Implementation of an experimental database for new phenomenological degradation laws for corroded steel rebars. In fib Symposium (pp.385-391). Lausanne : fib (International Federation for Structural Concrete).
Implementation of an experimental database for new phenomenological degradation laws for corroded steel rebars
Bartoli M.
;Di Carlo F.;Rinaldi Z.
2024-01-01
Abstract
Corrosion of rebars, causing a reduction of their cross-section and ductility, can significantly alter the structural behavior of reinforced concrete elements. Two main approaches can be found in literature: a first one in which corrosion effects are accounted for, in an engineering approach, through a modification of the constitutive law; a second one considering a reduction of the rebar area. In both cases a decay of the ultimate strain is considered. The work includes an experimental ongoing survey on artificially corroded steel rebars embedded in concrete prisms. Different diameters and corrosion degrees are considered. The results of the monotonic tensile tests allow the calibration of suiTable decay laws for the nominal yielding, ultimate strength, and ultimate strain. The study also addresses corrosion collecting and analyzing existing literature. to provide useful data and serve as a valuable resource for developing phenomenological degradation laws for corroded steel rebars.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
