Innovative test setup for the cyclic loading of multiple large-format concrete specimens

Przondziono, R. and Schulte-Schrepping, C. and Breitenbücher, R.

Volume: 113 Pages: 48-57
DOI: 10.1002/best.201700075
Published: 2018

Innovative test setup for the cyclic loading of multiple large-format concrete specimens. In case of concrete structures, cyclic loading can cause a microstructural degradation long before critical fatigue failure. In combination with other exposures, such as de-icing agents or sea water, this can result in an impairment of the durability. Therefore, load-dependent and load-independent cyclic loads must be distinguished. Load-independent but recurring loads are defined by thermal and hygroscopic deformations during the annual and daily changes for each concrete component. Load-dependent cyclic loads can be caused by i.e. traffic on concrete pavements or bridges or from the rotor blades of wind power plants. In order to be able to record the influence of the cyclic loads and their consequences on the durability (degradation of the concrete structure), also in combination with other exposures, a test setup was developed at the Institute of Building Materials at the Ruhr-University Bochum. This test setup allows a realistic simulation of cyclic loads on large-scale concrete specimens. The development, the functional principle and the successful use of the multiple test setup in several research projects are presented in this publication. Copyright © 2018 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin

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