Mesoscopic Modeling of Concrete under Different Moisture Conditions and Loading Rates

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    Abstract

    We present a mesoscopic finite element model for simulating the rate- and moisture-dependent material behavior of concrete. The idealized mesostructure consists of aggregates surrounded by an interfacial transition zone embedded in the bulk material. We examine the influence of the most significant constitutive model parameters on global and local response. Different distributions and shapes of the aggregates are tested. Three model parameter sets, corresponding to different moisture conditions, are employed in the analysis of two specimens in which the applied loading rate is significantly different. The results indicate that the loading rate has a stronger influence than the saturation level on fracture processes and global strength.
    Original languageEnglish
    Title of host publicationUnderstanding the Tensile Properties of Concrete
    EditorsJ. Weerheijm
    Number of pages27
    Place of PublicationCambridge
    PublisherWoodhead Publishing
    Publication date2013
    Pages268–294
    Chapter9
    ISBN (Print)978-0-85709-045-3
    ISBN (Electronic)978-0-85709-045-4
    DOIs
    Publication statusPublished - 2013
    SeriesCivil and Structural Engineering Series
    Number48

    Keywords

    • Mechanical Properties
    • Mesoscopic Modeling
    • Concrete
    • Finite Element Analysis

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