What do we know about concrete, steel, and bond-slip relation for corroded bars?
Paper in proceeding, 2020
Reinforcement corrosion influences the deformation and load capacity of steel rebars. Further, it generates splitting stresses that weaken the concrete and strongly affect the bond between reinforcement and concrete. Here, a recently published engineering model to determine the deformation
capacity of rebars with pitting corrosion is described. Further, the effect of corrosion on bond is described in a systematic way, with an overview of the effect for various cases depending on reinforcement type, existence of transverse reinforcement, and confinement due to concrete and boundaries.
Finally, an engineering model to determine bond-slip relationships for ribbed bars is presented.
capacity of rebars with pitting corrosion is described. Further, the effect of corrosion on bond is described in a systematic way, with an overview of the effect for various cases depending on reinforcement type, existence of transverse reinforcement, and confinement due to concrete and boundaries.
Finally, an engineering model to determine bond-slip relationships for ribbed bars is presented.
concrete
existing reinforced concrete structures
reinforcement corrosion
reinforcement
bond
Author
Karin Lundgren
Chalmers, Architecture and Civil Engineering, Structural Engineering
Mattias Blomfors
Chalmers, Architecture and Civil Engineering, Structural Engineering
Teresa E Chen
Chalmers, Architecture and Civil Engineering, Structural Engineering
Capacity Assessment of Corroded Reinforced Concrete Structures. Proceedings of the fib CACRCS DAYS 2020
2617-4820 (ISSN)
978-2-940643-10-3 (ISBN)
fib CACRCS DAYS 2020 - Capacity Assessment of Corroded Reinforced Concrete Structures
Parma (on-line event), ,
Parma (on-line event), ,
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Development Fund of the Swedish Construction Industry (SBUF) (13683), 2019-10-01 -- 2020-08-31.
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Cementa (17243), 2018-06-01 -- 2020-08-30.
Assessment of the load-carrying capacity of existing structures with corroded smooth reinforcement bars
Formas (2016-00568), 2017-01-01 -- 2020-12-31.
Swedish Transport Administration (TRV 2017/39084 6454), 2017-01-01 -- 2020-12-31.
Subject Categories
Other Civil Engineering