Time-dependent fracture of early age concrete

Lennart Østergaard, Henrik Stang, John Forbes Olesen

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Abstract

An experimental method suitable for the determination of the time-dependent tension softening response of early age concrete is presented. The method is based on the wedge splitting test by Tschegg, which is well known to be suited for the determination of fracture mechanical parameters, i.e. the fracture energy or the stress crack opening relationship as defined in the fictitious crack model by Hillerborg. The setup is designed in a way that eliminates self weight loading of the fracture process region and allows for determination of the time-dependent crack mouth opening displacement for a constant load applied to the setup. Possible modelling strategies are outlined in the paper and preliminary results are presented.
Original languageEnglish
Title of host publicationNon-Traditional Cement and Concrete
EditorsVlastimil Bilek
Number of pages528
Place of PublicationCzech Republic
PublisherBrno University of Technology
Publication date2002
Edition1
Pages394-408
ISBN (Print)80-21-41230-3
Publication statusPublished - 2002

Cite this

Østergaard, L., Stang, H., & Olesen, J. F. (2002). Time-dependent fracture of early age concrete. In V. Bilek (Ed.), Non-Traditional Cement and Concrete (1 ed., pp. 394-408). Brno University of Technology.