A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modeling of Chloride Concentration Effect on Reinforcement Corrosion
Abstract: The corrosion of reinforcement is one of the major causes of deterioration of reinforced concrete (RC) structures, considerably affecting their durability and reliability. The rate of reinforcement corrosion is governed by, among other factors, the presence of chlorides on the surface of the steel. The assessment of such deteriorating effects necessitates the development of relevant models and the utilization of advanced simulation techniques to enable the probabilistic analysis of concrete structures. In this article an approach for the assessment of the durability and reliability of RC structures under attack from chlorides is introduced. The field of chloride concentration at different locations in the structure (represented in 2D space by chosen longitudinal or cross sections) is modeled as a function of time by a cellular automata (CA) technique. The results of this simulation are then utilized for the assessment of a steel corrosion prognosis using a probabilistic 1D model at chosen points, although the rate of corrosion is based on experimental results. The concentrations of chlorides and pH levels are reflected in this way. The described approach is applied to an illustrative example showing the feasibility of capturing the effect of chloride concentration on the steel corrosion rate and consequently on the assessment of the service life and/or reliability of the structure.
Modeling of Chloride Concentration Effect on Reinforcement Corrosion
Abstract: The corrosion of reinforcement is one of the major causes of deterioration of reinforced concrete (RC) structures, considerably affecting their durability and reliability. The rate of reinforcement corrosion is governed by, among other factors, the presence of chlorides on the surface of the steel. The assessment of such deteriorating effects necessitates the development of relevant models and the utilization of advanced simulation techniques to enable the probabilistic analysis of concrete structures. In this article an approach for the assessment of the durability and reliability of RC structures under attack from chlorides is introduced. The field of chloride concentration at different locations in the structure (represented in 2D space by chosen longitudinal or cross sections) is modeled as a function of time by a cellular automata (CA) technique. The results of this simulation are then utilized for the assessment of a steel corrosion prognosis using a probabilistic 1D model at chosen points, although the rate of corrosion is based on experimental results. The concentrations of chlorides and pH levels are reflected in this way. The described approach is applied to an illustrative example showing the feasibility of capturing the effect of chloride concentration on the steel corrosion rate and consequently on the assessment of the service life and/or reliability of the structure.
Modeling of Chloride Concentration Effect on Reinforcement Corrosion
Vořechovská, Dita (author) / Podroužek, Jan (author) / Chromá, Markéta (author) / Rovnaníková, Pavla (author) / Teplý, Břetislav (author)
Computer‐Aided Civil and Infrastructure Engineering ; 24 ; 446-458
2009-08-01
13 pages
Article (Journal)
Electronic Resource
English
Modeling of Chloride Concentration Effect on Reinforcement Corrosion
| Online Contents | 2009
Effect of chloride concentration in soil on reinforcement corrosion
| Online Contents | 2007
Effect of chloride concentration in soil on reinforcement corrosion
| British Library Online Contents | 2007
Effect of chloride concentration in soil on reinforcement corrosion
| Elsevier | 2006
SP-234-14: Effect of Chloride Concentration on Reinforcement Corrosion in Concrete
| British Library Conference Proceedings | 2006