Existing reinforced concrete elements are subjected to the ageing and to corrosion phenomena, that can lead to a significant decay of the material and structural properties. The researches on the influence of the corrosion on the bond properties of reinforced concrete elements are numerous in the technical literature, and both theoretical and experimental surveys may be found. Nevertheless, small specimens (for which only the local bond-slip behaviour can develop) are typically employed. To evaluate the influence of the corrosion on the global tensile behaviour of reinforced concrete elements, three tie rods were cast, artificially corroded and tested at the Laboratory of Materials and Structures of the University of Rome Tor Vergata. Each specimen was characterized by a 150x150mm2 cross-section and a length of 3000 mm and reinforced with a 016 steel bar placed at the centerline of the element. The specimens were artificially corroded up to about 5% corrosion level (in terms of mass loss). The obtained results clearly highlight the influence of the corrosion of the bond transmission mechanism.
Imperatore, S., Rinaldi, Z., Spagnuolo, S. (2019). Experimental behaviour of reinforced concrete tie-rods damaged by corrosion. In Concrete Innovation in Materials, Design and Structures. Proceedings of the fib Symposium 2019, held in Krakow, Poland. 27-29 May 2019. (pp.1400-1407). Edited by: Derkowski W., Gwozdziewicz P., Hojdys L., Krajewski P., Pantak M..
Experimental behaviour of reinforced concrete tie-rods damaged by corrosion
Imperatore Stefania;Rinaldi Zila;Spagnuolo Simone
2019-01-01
Abstract
Existing reinforced concrete elements are subjected to the ageing and to corrosion phenomena, that can lead to a significant decay of the material and structural properties. The researches on the influence of the corrosion on the bond properties of reinforced concrete elements are numerous in the technical literature, and both theoretical and experimental surveys may be found. Nevertheless, small specimens (for which only the local bond-slip behaviour can develop) are typically employed. To evaluate the influence of the corrosion on the global tensile behaviour of reinforced concrete elements, three tie rods were cast, artificially corroded and tested at the Laboratory of Materials and Structures of the University of Rome Tor Vergata. Each specimen was characterized by a 150x150mm2 cross-section and a length of 3000 mm and reinforced with a 016 steel bar placed at the centerline of the element. The specimens were artificially corroded up to about 5% corrosion level (in terms of mass loss). The obtained results clearly highlight the influence of the corrosion of the bond transmission mechanism.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
