Abstract
The mesoscale fracture modeling of concrete requires explicit descriptions of the mesostructure and the fracture behavior of its phases. To identify the fracture properties, an in situ three-point bending test on a notched beam was carried out in an X-ray scanner. The kinematic fields at different loadings and crack propagation steps were measured via Digital Volume Correlation. A realistic mesh was created for mechanical simulations to be run. The experimental displacement fields were used as kinematic boundary conditions of a region of interest around the crack. Fracture of the cement paste was modeled with a phase field method. The numerical cracking pattern is compared to the experimental observation.
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The authors gratefully acknowledge financial support from EDF and CEA.
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Tsitova, A., Bernachy-Barbe, F., Bary, B., Hild, F. (2021). In-situ X-CT Test on Mortar Micro-specimen Coupled with Mesoscale Numerical Simulations of Fracture. In: Kanavaris, F., Benboudjema, F., Azenha, M. (eds) International RILEM Conference on Early-Age and Long-Term Cracking in RC Structures. CRC 2021. RILEM Bookseries, vol 31. Springer, Cham. https://doi.org/10.1007/978-3-030-72921-9_20
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