Reliability analysis of chloride penetration in saturated concrete

Jun g Sik Kong, Ayman N. Ababneh, Dan M. Frangopol, Yunping Xi

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Corrosion of reinforcement in concrete is a major durability problem of reinforced concrete structures. The corrosion is initiated by chloride penetration into the concrete, which is a diffusion-controlled process involving many complex physical and chemical mechanisms. Large random variation has shown in the corrosion damage of reinforced concrete structures, and there is a pressing need to develop a reliability analysis method for chloride penetration and for the onset of steel corrosion in concrete. In order to conduct a reliability analysis, a comprehensive material model for chloride concentration is developed and described, and some of the model parameters (water-cement ratio and curing time) are selected as random variables. By including uncertainties in the selected variables, the chloride penetration front at a point in time can be represented by a time-dependent probabilistic distribution. Similar to the concepts of supply and demand used in structural reliability analysis, the chloride penetration front at a target level (depth) with respect to time can be represented by the probability distribution of crossing the target level. A detailed description of the basic concepts and numerical examples are given. To include the effect of uncertainties of the material parameters, a recently developed Monte Carlo simulation program was used in numerical examples.

Original languageEnglish
Pages (from-to)305-315
Number of pages11
JournalProbabilistic Engineering Mechanics
Volume17
Issue number3
DOIs
Publication statusPublished - 2002 Jul 1
Externally publishedYes

Fingerprint

reliability analysis
Reliability analysis
penetration
chlorides
Concretes
Corrosion
corrosion
Concrete construction
Reinforced concrete
concrete structures
Steel corrosion
Random variables
Probability distributions
structural reliability
Curing
Reinforcement
Cements
Durability
random variables
pressing

Keywords

  • Chloride penetration
  • Concrete durability
  • Monte Carlo simulation
  • Reliability

ASJC Scopus subject areas

  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality

Cite this

Reliability analysis of chloride penetration in saturated concrete. / Kong, Jun g Sik; Ababneh, Ayman N.; Frangopol, Dan M.; Xi, Yunping.

In: Probabilistic Engineering Mechanics, Vol. 17, No. 3, 01.07.2002, p. 305-315.

Research output: Contribution to journalArticle

Kong, Jun g Sik ; Ababneh, Ayman N. ; Frangopol, Dan M. ; Xi, Yunping. / Reliability analysis of chloride penetration in saturated concrete. In: Probabilistic Engineering Mechanics. 2002 ; Vol. 17, No. 3. pp. 305-315.
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