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.
|Title of host publication||Non-Traditional Cement and Concrete|
|Number of pages||528|
|Place of Publication||Czech Republic|
|Publisher||Brno University of Technology|
|Publication status||Published - 2002|