ABSTRACT
Coupled analysis of mass transport and damage mechanics associated with steel corrosion is presented for structural performance assessment of reinforced concrete. Multi-scale modelling of micro-pore formation and transport phenomena of moisture and ions are mutually linked for predicting the corrosion of reinforcement and volumetric changes. The interaction of crack propagation with corroded gel migration is simulated. Two computer codes for multi-chemo physical simulation (DuCOM) and nonlinear dynamic mechanics of structural concrete (COM3) were combined. This computational system was verified by the laboratory scale experiments of damaged reinforced concrete members under static loads, and has been applied to safety and serviceability assessment of existing bridges.
