Sulfate attack of concrete: Reliability analysis

David J. Corr*, Paulo J M Monteiro, Kimberly E. Kurtis, Armen Der Kiureghian

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

To determine the expected long-term performance of concrete in a sulfate-rich environment, a reliability analysis is performed using a previously developed model and data collected over more than 40 years by the U.S. Bureau of Reclamation (USBR). The reliability analysis contains three main phases: 1) an expected time to failure analysis; 2) a probability of failure analysis; and 3) a sensitivity analysis. This analysis demonstrates that the concrete mixtures of the USBR program subjected to a severe sulfate environment have expected times to failure of 19 to 89 years, depending on the concrete mixture proportions and the portland cement composition. Probability of failure increases with increasing exposure time, water-cement ratio (w/c), and C3A content, although at different rates. Through the use of a probability sensitivity analysis, it is found that uncertainty in the w/c is the most influential parameter in the reliability model; it is roughly twice as important as exposure time. Also, the influence of w/c is roughly one order of magnitude larger than the influence of the C3A content for cements with a C3A content less than 8%.

Original languageEnglish (US)
Pages (from-to)99-104
Number of pages6
JournalACI Materials Journal
Volume98
Issue number2
StatePublished - Mar 1 2001

Keywords

  • Analysis
  • Cement
  • Sulfate
  • Water-cement ratio

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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