What do we know about concrete, steel, and bond-slip relation for corroded bars?
Paper i 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
Författare
Karin Lundgren
Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik
Mattias Blomfors
Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik
Teresa E Chen
Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik
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), ,
Hybridarmerade betongkonstruktioner i kloridhaltig miljö: beständighet, säkerhet och livscykelkostnader
Svenska Byggbranschens Utvecklingsfond (SBUF) (13683), 2019-10-01 -- 2020-08-31.
Trafikverket (TRV 2018/36506), 2018-06-01 -- 2020-08-30.
Cementa (17243), 2018-06-01 -- 2020-08-30.
Bedömning av bärförmåga hos befintliga betongkonstruktioner med korroderade släta armeringsstänger
Formas (2016-00568), 2017-01-01 -- 2020-12-31.
Trafikverket (TRV 2017/39084 6454), 2017-01-01 -- 2020-12-31.
Ämneskategorier
Annan samhällsbyggnadsteknik