Mechanical behavior of corroded reinforcing steel bars S500s tempcore under low cycle fatigue

Apostolopoulos, Charis

doi:10.1016/j.conbuildmat.2006.07.008

Cited by 147 publications

(72 citation statements)

References 11 publications

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“…Recent studies in the current literature [20,22] evidenced the progressive deterioration of the mechanical characteristics of steel reinforcing bars under aggressive environmental conditions. The effects of corrosion on the mechanical properties of bars were not usually taken into account since the presence of a correctly sized concrete cover, joined with ordinary external circumstances, is generally sufficient to guarantee the protection of reinforcing steel bars, providing a thin passive layer that covers the reinforcement avoiding the generation of rust.…”

Section: Elaboration Of a Protocol For Accelerated Corrosion Testsmentioning

confidence: 99%

“…Results are presented in terms of maximum and minimum deformation and stress and total density of dissipated energy, evaluated as presented by Apostolopoulos [20]:…”

Section: Evaluation Of the Seismic Ductility Demand (D) On Steel Barsmentioning

confidence: 99%

“…Moreover, beside the problems already presented regarding the mechanical A. Braconi, F. Braga, S. Caprili, R. Gigliotti, W. Salvatore characterization of the low-cycle fatigue/seismic behaviour of steel reinforcing bars, several works in the current literature [20] evidenced durability problems of TempCore bars in r.c. buildings located in aggressive environmental conditions (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Low-Cycle Fatigue and Corrosion Phenomena on the Ductile Behaviour of Steel Reinforcing Bars

Braconi¹,

Braga²,

Caprili³

et al. 2014

Proceedings of the 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Section: Elaboration Of a Protocol For Accelerated Corrosion Testsmentioning

confidence: 99%

“…Results are presented in terms of maximum and minimum deformation and stress and total density of dissipated energy, evaluated as presented by Apostolopoulos [20]:…”

Section: Evaluation Of the Seismic Ductility Demand (D) On Steel Barsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Low-Cycle Fatigue and Corrosion Phenomena on the Ductile Behaviour of Steel Reinforcing Bars

Braconi¹,

Braga²,

Caprili³

et al. 2014

Proceedings of the 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…The action could possibly bring major threats on structural safety and lead to catastrophic failure, such as the tragedy of the collapse of the Silver Bridge in 1967 (LeRose, 2001). Recent research has been carried out on the corrosion fatigue behavior of reinforcing bar or steel beams in the bridge (Apostolopoulos, 2007;Kashani, Lowes, Crewe, & Alexander, 2014;Xu & Wang, 2015;Zhang & Yuan, 2014). It is shown that corrosion-induced fatigue strength reduction has a large effect on fatigue life.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of Corroded Stud Shear Connectors under Fatigue Loading

Ju¹,

Jiang²

2016

Proceedings of the 5th International Conference on the Durability of Concrete Structures

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Experimental investigation was conducted on corroded composite push-out specimens to study the behavior of shear studs subjected to fatigue loading. A total of eight standard EC4 push-out specimens were tested. The expected corrosion rate of test specimens ranged from 0 to 50%. The main purpose of these tests was to determine the fatigue life and the reduction effect caused by the corrosion on the fatigue life. The effect of corrosion on the fatigue crack, load-slip curves, and failure modes was also studied. In addition, the test results were compared with current Eurocode design predictions, which is only for specimen without corrosion. It is shown that the current Eurocode design predictions are quite conservative for the test specimens in this study. Design equations were also proposed for fatigue life of corroded composite push-out specimens.

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“…162 [3]). However, analytical tools to manipulate the subject are rare and the absence of a specific design code, regarding retrofitting of existing old structures makes a complex and difficult problem (Tassios [12]; Tsonos [15]; Apostolopoulos [1,2]). …”

Section: Introductionmentioning

confidence: 99%

Towards a European code for seismic assessment and strengthening of existing buildings

Dritsos¹

2007

WIT Transactions on the Built Environment, Vol 93

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In Europe, actions towards preparing a code document regarding assessment and strengthening of existing reinforced concrete structures are already present in the draft document Part 3 of EC8. However, for the case of strengthening by the addition of new reinforced concrete, specific provisions, to check the capacity of the connections between contact surfaces, are missing.Structural design of strengthened concrete elements can be placed into the framework of the currently known processes of design, which are used for new constructions, supplemented by a crucial investigation at the interface between the contact surfaces, to ensure that failure in each strengthened element precedes failure at the interface, between the old and the new material. For that reason, shear forces and shear resistances at the interfaces, between the old and the new element, must be examined. An evaluation of the shear force that develops between the contact surfaces can be obtained in a similar way as for steel and concrete composite structural elements. The main mechanisms that contribute to the shear resistance at the interface are: (a) concrete-to-concrete adhesion, (b) concrete-to-concrete friction, (c) connecting action from steel bars placed across the interface between the old and the new concrete and (d) bent steel bars welded between the bars of the old and the new concrete. The total shear resistance between contact surfaces can be found by summing the individual shear resistances that are mobilised by each individual mechanism for a common interface slip. To prevent a brittle failure at the interface, a minimum amount of steel shear connectors in the form of dowels or bent steel bars must be provided.

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Mechanical behavior of corroded reinforcing steel bars S500s tempcore under low cycle fatigue

Cited by 147 publications

References 11 publications

Influence of Low-Cycle Fatigue and Corrosion Phenomena on the Ductile Behaviour of Steel Reinforcing Bars

Influence of Low-Cycle Fatigue and Corrosion Phenomena on the Ductile Behaviour of Steel Reinforcing Bars

Behaviour of Corroded Stud Shear Connectors under Fatigue Loading

Towards a European code for seismic assessment and strengthening of existing buildings

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