Naslov
Modeling damage of concrete caused by corrosion of steel reinforcement

Autori
Ožbolt, Joško ; Oršanić, Filip ; Kušter, Marija ; Balabanić, Gojko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Durability of concrete structures - Proceedings of the 8th Central European Congresses on Concrete Engineering / Radić, Jure ; Kušter, Marija - Zagreb : SECON - CSSE, 2012, 47-58

ISBN
978-953-762114-8

Skup
Durability of concrete structures - 8th Central European Congresses on Concrete Engineering

Mjesto i datum
Plitvička Jezera, Hrvatska, 04.10.2012. - 06.10.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Reinforced concrete; Corrosion; Chemo-hygro-thermo-mechanical model; Finite elements; Microplane model; Damage; Corrosion products; Bond resistance; Pull-out capacity

Sažetak
Three-dimensional fully coupled chemo-hygro- thermo-mechanical model is used in a 3D transient FE analysis to study pull-out capacity of corroded steel reinforcement from a concrete beam-end specimen, which was exposed to aggressive environmental conditions. The expansion of corrosion products is modeled by 1D contact corrosion elements on the reinforcement-concrete contact surface. Once the reinforcement is depassivated (begin of corrosion), corrosion rate is calculated and corrosion contact elements are automatically activated generating radial compressive forces, which damage concrete cover. Finally, to predict the effect of corrosion on the pull-out capacity of reinforcement, the reinforcement bar is pulled out from the concrete specimen. Similar as in the experiments, it is shown that corrosion of steel reinforcement significantly reduces pull-out capacity.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti

POVEZANOST RADA