Reinforced concrete structures in service may be affected by aging, which may include changes in strength and stiffness beyond the baseline conditions which are assumed in structural design, in particular when the concrete is exposed to an aggressive environment. In this context, this paper provides a computational probabilistic approach to predict the time-evolution of the mechanical and geometrical properties of a reinforced concrete structural element (i.e., bridge pier) subjected to corrosion-induced deterioration, due to diffusive attack of chlorides, in order to evaluate its service life. Adopting appropriate degradation models of the material properties, concrete and reinforcing steel, as well as assuming appropriate probability density functions related to mechanical and deterioration parameters, the proposed model, based on Monte Carlo simulations, aims at estimating the time-variant reliability index. Finally, an application to estimate the expected lifetime of a r.c. bridge pier is described.

Reinforced concrete structures in service may be affected by aging, which may include changes in strength and stiffness beyond the baseline conditions which are assumed in structural design, in particular when the concrete is exposed to an aggressive environment. In this context, this paper provides a computational probabilistic approach to predict the time-evolution of the mechanical and geometrical properties of a reinforced concrete structural element (i.e., bridge pier) subjected to corrosion-induced deterioration, due to diffusive attack of chlorides, in order to evaluate its service life. Adopting appropriate degradation models of the material properties, concrete and reinforcing steel, as well as assuming appropriate probability density functions related to mechanical and deterioration parameters, the proposed model, based on Monte Carlo simulations, aims at estimating the time-variant reliability index. Finally, an application to estimate the expected lifetime of a r.c. bridge pier is described.

Effects of Chloride-Induced Corrosion on Structural Reliability of R.C. Structures / Castaldo, Paolo; Palazzo, Bruno; Mariniello, Alessio. - ELETTRONICO. - 1:(2016), pp. 15-24. (Intervento presentato al convegno The New Boundaries of Structural Concrete tenutosi a Capri (NA), Italy nel September 29th- October 1st, 2016).

Effects of Chloride-Induced Corrosion on Structural Reliability of R.C. Structures

CASTALDO, PAOLO;
2016

Abstract

Reinforced concrete structures in service may be affected by aging, which may include changes in strength and stiffness beyond the baseline conditions which are assumed in structural design, in particular when the concrete is exposed to an aggressive environment. In this context, this paper provides a computational probabilistic approach to predict the time-evolution of the mechanical and geometrical properties of a reinforced concrete structural element (i.e., bridge pier) subjected to corrosion-induced deterioration, due to diffusive attack of chlorides, in order to evaluate its service life. Adopting appropriate degradation models of the material properties, concrete and reinforcing steel, as well as assuming appropriate probability density functions related to mechanical and deterioration parameters, the proposed model, based on Monte Carlo simulations, aims at estimating the time-variant reliability index. Finally, an application to estimate the expected lifetime of a r.c. bridge pier is described.
2016
Reinforced concrete structures in service may be affected by aging, which may include changes in strength and stiffness beyond the baseline conditions which are assumed in structural design, in particular when the concrete is exposed to an aggressive environment. In this context, this paper provides a computational probabilistic approach to predict the time-evolution of the mechanical and geometrical properties of a reinforced concrete structural element (i.e., bridge pier) subjected to corrosion-induced deterioration, due to diffusive attack of chlorides, in order to evaluate its service life. Adopting appropriate degradation models of the material properties, concrete and reinforcing steel, as well as assuming appropriate probability density functions related to mechanical and deterioration parameters, the proposed model, based on Monte Carlo simulations, aims at estimating the time-variant reliability index. Finally, an application to estimate the expected lifetime of a r.c. bridge pier is described.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2664995
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