TY - GEN
T1 - Influence of anti-corrosive coatings on bond behavior of corroded rebar
AU - Natino, Mohammad Ridduhan
AU - Yang, Yizhou
AU - Nakamura, Hikaru
AU - Miura, Taito
N1 - Publisher Copyright:
© Proceedings of the fib Symposium 2020: Concrete Structures for Resilient Society. All rights reserved.
PY - 2020
Y1 - 2020
N2 - This research aims to investigate the influence of anti-corrosive coating on the bond behavior of coated corroded rebar to concrete. Two different types of anti-corrosive coating materials have been considered and each is to be applied manually. The test specimens are divided into six groups. Group I contains sound or non-corroded rebar serve as control group, Group II and III are the coated sound rebar groups serve to investigate the direct effect of coating, while Group IV is the bare corroded rebar group, and the Group V and VI are the coated corroded rebar groups. The accelerated electric corrosion method is employed for the Group IV-VI with a varying target degree of corrosion ranging from 5% to 10%. After the target corrosion degree is achieved, laser scanning test is conducted to investigate the change in geometrical properties of the sound/coated and the coated corroded rebar groups. Thereafter, Group I-III are casted and Group IV-VI are re-casted into new specimens and bond-slip relationships are measured through two-end pull out test. As important findings, the anti-corrosive coating materials have a significant influence on the bond behavior. Cementitious coated exhibits a brittle bond-slip behavior and shows a better performance as compared to epoxy coated with a ductile bond-slip behavior.
AB - This research aims to investigate the influence of anti-corrosive coating on the bond behavior of coated corroded rebar to concrete. Two different types of anti-corrosive coating materials have been considered and each is to be applied manually. The test specimens are divided into six groups. Group I contains sound or non-corroded rebar serve as control group, Group II and III are the coated sound rebar groups serve to investigate the direct effect of coating, while Group IV is the bare corroded rebar group, and the Group V and VI are the coated corroded rebar groups. The accelerated electric corrosion method is employed for the Group IV-VI with a varying target degree of corrosion ranging from 5% to 10%. After the target corrosion degree is achieved, laser scanning test is conducted to investigate the change in geometrical properties of the sound/coated and the coated corroded rebar groups. Thereafter, Group I-III are casted and Group IV-VI are re-casted into new specimens and bond-slip relationships are measured through two-end pull out test. As important findings, the anti-corrosive coating materials have a significant influence on the bond behavior. Cementitious coated exhibits a brittle bond-slip behavior and shows a better performance as compared to epoxy coated with a ductile bond-slip behavior.
KW - Anti-corrosive coating
KW - Bond-slip relationship
KW - Corrosion
KW - Laser scanning
KW - Two end pull-out test
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M3 - Conference contribution
AN - SCOPUS:85102401498
T3 - Proceedings of the fib Symposium 2020: Concrete Structures for Resilient Society
SP - 2205
EP - 2213
BT - Proceedings of the fib Symposium 2020
A2 - Zhao, Bin
A2 - Lu, Xilin
PB - International Federation for Structural Concrete
T2 - 2020 fib Symposium: Concrete Structures for Resilient Society
Y2 - 22 November 2020 through 24 November 2020
ER -