Mesoscopic analysis of drying shrinkage damage in a cementitious material

P. Moonen, R.R. Pedersen, A. Simone, L.J. Sluys, J. Carmeliet

    Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

    Abstract

    Concrete and cement-based materials exhibit shrinkage when exposed to drying. Structural
    effects and inhomogeneity of material properties adverse free shrinkage, hereby inducing
    stress concentrations and possibly damage. In this contribution, the magnitude of shrinkage-
    induced damage during a typical sample preparation procedure is assessed. To this extent, a
    coupled hygro-thermo-mechanical model, incorporating rate-effects, is developed. The
    constitutive model is applied at a mesoscopic level where the aggregates and the interfacial
    transition zone (ITZ) are explicitly modelled. Two drying temperatures are considered: 35 °C
    and 50 °C. Significantly more micro-damage and higher internal stresses are found for the
    latter, revealing the importance of drying shrinkage damage, even at laboratory scale.

    OriginalsprogEngelsk
    TitelConcrete Modelling CONMOD'08 Proceedings of the International RILEM Symposium
    RedaktørerErik Schlangen, Geert De Schutter
    Antal sider8
    ForlagRilem publications
    Publikationsdato2008
    Sider691-698
    ISBN (Trykt)978-2-35158-060-8
    StatusUdgivet - 2008
    BegivenhedConcrete Modelling CONMOD-08 - Delft, Holland
    Varighed: 26 maj 200828 maj 2008
    Konferencens nummer: PRO 58

    Konference

    KonferenceConcrete Modelling CONMOD-08
    NummerPRO 58
    Land/OmrådeHolland
    ByDelft
    Periode26/05/200828/05/2008

    Citationsformater