Crack Width Evolution of R/C Structures Subject to Corrosion and Fatigue

Abstract:

Corrosion modifies the steel-concrete interface in reinforced concrete structures. Moreover in structures subjected to cyclic load, a simultaneous mechanical deterioration due to the load is present. Both phenomena can lead to an evolution of cracks width during the service life. In order to evaluate the crack openings increase, an experimental campaign on reinforced concrete ties subjected to simultaneous loading and corrosion have been realized. Transversal crack opening, initially due to loading and longitudinal corrosion cracks evolution is monitored. Results highlight the differences in terms of corroded and uncorroded specimens, static and cycling test and also different loading amplitude. Finally it can be observed as the growing of the damage is significantly different when a cycling action, combined with a chemical attack is present.

• Periodical: Key Engineering Materials (Volumes 452-453)
• Pages: 417-420
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.452-453.417
• Online since: November 2010
• Authors: Luca Giordano, Francesco Tondolo
• Keywords: Corrosion, Crack Opening, Degradation

References

[1] Fib, Model code for Service life Design, Bullettin n°34, p.116. (2006).

[2] DuraCrete, Probabilistic Performance Based Durability Design of Concrete Structures, Report No.: BE 95-1347, p.139. (2000).

[3] Giordano L, Mancini G, Tondolo F, Numerical interpretation of bond between steel and concrete in presence of corrosion and cyclic action. Key Engineering Materials Vol. 417-418, pp.349-352. (2010).

DOI: 10.4028/www.scientific.net/kem.417-418.349

[4] Giordano, L., Mancini, G. and Tondolo, Experimental evaluation of corrosion effect on bond between steel and concrete in presence of cyclic action', Key Engineering Materials Vol. 417418, pp.350-353. (2010).

DOI: 10.4028/www.scientific.net/kem.417-418.345

[5] EN 1991-2, Actions on structures Part 2: Traffic load on bridges. (2005).