TUHH Open Research
 

Experimental and numerical investigations of the fatigue behavior of ultra-high performance concrete

Start Page
105
End Page
112
Citation
fib Symposium 2019
Contribution to Conference
fib Symposium 2019  
Scopus ID
2-s2.0-85066092910
Publisher
International Federation for Structural Concrete
ISBN of container
978-294064300-4
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.
DDC Class
600: Technology
Funding(s)
Teilprojekt von SPP 2020: Hochauflösende elektronenmikroskopische Untersuchungen zum Ermüdungsverhalten von Hochleistungsbetonen und mehrskalige Modelierung mittels Bonded Particle Model  
Zyklische Schädigungsprozesse in Hochleistungsbetonen im Experimental-Virtual-Lab  
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.