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Experimental and numerical investigations of the fatigue behavior of ultra-high performance concrete
Publikationstyp
Conference Paper
Date Issued
2019
Sprache
English
TORE-URI
Start Page
105
End Page
112
Citation
Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures : 105-112 (2019)
Contribution to Conference
Scopus ID
This contribution deals with preliminary experimental and numerical results on the fatigue behavior of ultra-high performance concrete (UHPC). For this purpose, a set of experimental investigations has been performed on samples of UHPC, pure aggregate and binder. In order to obtain structural changes in detail, UHPC samples were examined using scanning and transmission electron microscopy (SEM and TEM) and tomography. For numerical investigations of the mechanical behavior of UHPC, the bonded-particle model (BPM) has been used and calibrated with experimental data. Additionally, to maintain realistic non-spherical shape of the aggregates, micro-CT analysis was used for the mesoscopic model. Furthermore, a rheological model for cement bonds was proposed to capture a plastic deformation for prospective fatigue simulations.
More Funding Information
We gratefully acknowledge financial support from the German Research Foundation (DFG) within the priority program SPP 2020 “Cyclic deterioration of High-Performance Concrete in an experimental-virtual lab” under the projects: SCHM 1473/29-1, RI 1516/2-1, DO 2026/2-1.