Estimation of elastic modulus of reinforcement corrosion products using inverse analysis of digital image correlation measurements for input in corrosion-induced cracking model
Publication: Research - peer-review › Article in proceedings – Annual report year: 2012
A combined experimental and numerical approach for estimating the elastic modulus of reinforcement corrosion products is presented. Deformations between steel and mortar were measured using digital image correlation during accelerated corrosion testing at 100 μA/cm2 (~1.16 mm/year). Measured deformations were compared to a numerical corrosion model that considers electrochemical, transport, and mechanical processes, including penetration of corrosion products into a ‘corrosion-accommodating region,’ provided by the mortar’s capillary porosity, directly surrounding the steel. Comparing model and experimental results provides an order-of-magnitude approximation of corrosion product stiffness of 2.0 GPa.
|Title||Proceedings of the 6th International Conference on Bridge Maintenance, Safety and Management|
|Conference||6th International Conference on Bridge Maintenance, Safety and Management|
|City||Stresa, Lake Maggiore|
|Period||08/07/12 → 12/07/12|
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