3D Modelling of the bond behavior of naturally corroded reinforced concrete
Conference contribution, 2015

Corrosion of steel reinforcement causes cracking and spalling of concrete cover which affects the bond; this is a crucial factor in deterioration of concrete structures. Earlier, anchorage tests have been carried out on specimens with naturally corroded reinforcements. In an ongoing study, the focus is given to the modelling of these specimens. The aim is to evaluate the structural behaviour of the tested naturally corroded specimens. The analyses are performed in the FE program Diana. The frictional bond and corrosion models developed by Lundgren and Zandi are implemented in interface elements to model the interaction between the concrete and reinforcements. The preliminary results of the analysis showed differences in the shear crack pattern in comparison with the experiments. In the analysis, a longer remaining anchorage length was obtained in comparison with the experiment which resulted in a wrong failure mode. The issue might be related to the influence of aggregate interlock in FE analysis.

anchorage

natural corrosion

bond behaviour

RC structures

FE-modelling

Author

Karin Lundgren

Chalmers, Civil and Environmental Engineering, Structural Engineering

Mario Plos

Chalmers, Civil and Environmental Engineering, Structural Engineering

Mohammad Tahershamsi

Chalmers, Civil and Environmental Engineering, Structural Engineering

Extended abstract in “Residual Capacity of Deteriorated Concrete Structures” mini-seminar, 21st of April 2015, Oslo, Norway

Driving Forces

Sustainable development

Areas of Advance

Building Futures

Subject Categories

Civil Engineering

More information

Created

10/7/2017