Moment-Axial Domain of Corroded R.C. Columns
In the present paper, a simplified model to determine the moment-axial force domain of the cross-section of reinforced concrete columns subjected to corrosion process is presented. The model considers members with square and rectangular cross-sections and it accounts for cover spalling, buckling of longitudinal reinforcing bars, loss of bond of bar in tension, reduction of confinement pressures (due to the reduction of the area of stirrups and cracking of concrete induced by rust formation). The analytical expressions for prediction of the area reduction of steel, bond strength and critical load of longitudinal bars utilized were verified against experimental data available literature.
KeywordsMoment-axial force domain Confinement Buckling Corrosion Cover spalling
The research was performed within the 2014/18 Research Project “DPC–ReLUIS (Dipartimento Protezione Civile - Rete dei Laboratori Universitari di Ingegneria Sismica)”, Linea di Ricerca Cemento Armato. The related financial support was greatly appreciated.
- Bergmann R, Matsui C, Meinsma C, Dutta D (1995) Design guide for concrete filled hollow section columns under static and seismic loading. Verlag TUV RheinhaldGoogle Scholar
- Eurocode 4 (2004) Design of composite steel and concrete structures. EN 1994-1-1Google Scholar
- Fernandez I, Bairàn JM, Marì AR (2016) Mechanical model to evaluate steel reinforcement corrosion effects on σ-ε and fatigue curves. Experimental calibration and validation. Constr Build Mater 118:320–333Google Scholar
- MacGregor JG (1997) Reinforced concrete: mechanics and design, 3rd edn. Prentice-Hall, Upper Saddle RiverGoogle Scholar
- Rodriguez J, Ortega L, Garcia A (1994) Corrosion of reinforcing bars and service life of R/C structures: Corrosion and bond deterioration. In: Proceedings of international conference on concrete across borders, vol II, pp 315–326Google Scholar
- Eurocode 2 (2004) Design of concrete structures, EN-1992-1-1 Google Scholar