Empirical models to predict concrete expansion caused by sulfate attack

Kimberly E. Kurtis, Paulo J.M. Monteiro, Samer Madanat

    Research output: Contribution to journalArticle

    Abstract

    The development of empirical models to predict concrete expansion produced by sulfate attack is described. Data collected by the U.S. Bureau of Reclamation over a 40+ year period of non-accelerated testing form the basis for the model. In the nonaccelerated test program, concrete cylinders -were continuously submerged at room temperature in 2.1% sodium sulfate solution, which corresponds to severe field exposure conditions. Expansion measurements were made periodically. Over 8000 expansion measurements were collected for 114 specimens cast from 51 different mixtures. Analysis of the data showed the significance of water-cement ratio (w/c) and C3A content of the cement, with the data revealing distinct behavior for mixtures containing cements with low C3A content (< 8%) and high C3A content (> 10%). As a result, two models are proposed to predict expansion by sulfate attack as a function of\\/c, duration of exposure, and C3A content. The random effects method was used to capture unobserved heterogeneity in the data set, and the results from a simple regression and a regression including the random effects method are compared.

    Original languageEnglish (US)
    Pages (from-to)156-161
    Number of pages6
    JournalACI Structural Journal
    Volume97
    Issue number2
    StatePublished - Dec 1 2000

    Fingerprint

    Concretes
    Cements
    Sodium sulfate
    Reclamation
    Sulfates
    Testing
    Water
    Temperature

    Keywords

    • Accelerated tests
    • Concretes
    • Expansion
    • Sulfate attack

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction

    Cite this

    Empirical models to predict concrete expansion caused by sulfate attack. / Kurtis, Kimberly E.; Monteiro, Paulo J.M.; Madanat, Samer.

    In: ACI Structural Journal, Vol. 97, No. 2, 01.12.2000, p. 156-161.

    Research output: Contribution to journalArticle

    Kurtis, Kimberly E. ; Monteiro, Paulo J.M. ; Madanat, Samer. / Empirical models to predict concrete expansion caused by sulfate attack. In: ACI Structural Journal. 2000 ; Vol. 97, No. 2. pp. 156-161.
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