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3D Modelling of the bond behavior of naturally corroded reinforced concrete

Karin Lundgren (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; Mario Plos (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; Kamyab Zandi Hanjari ; Mohammad Tahershamsi (Institutionen för bygg- och miljöteknik, Konstruktionsteknik)
Extended abstract in “Residual Capacity of Deteriorated Concrete Structures” mini-seminar, 21st of April 2015, Oslo, Norway (2015)
[Konferensbidrag, övrigt]

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.

Nyckelord: FE-modelling, natural corrosion, anchorage, bond behaviour, RC structures



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Denna post skapades 2017-05-05. Senast ändrad 2017-05-05.
CPL Pubid: 249141

 

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Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Konstruktionsteknik (2005-2017)

Ämnesområden

Building Futures
Hållbar utveckling
Samhällsbyggnadsteknik

Chalmers infrastruktur