Binder, E., Reihsner, R., Yuan, Y., Mang, H. A., & Pichler, B. (2020). High-dynamic compressive and tensile strength of specimens made of cementitious materials. Cement and Concrete Research, 129, Article 105890. https://doi.org/10.1016/j.cemconres.2019.105890
The strength of specimens made of cementitious materials increases with increasing loading rate. Herein, the<br />model of Fischer et al. (CCR 58, 2014, 186–200) is revisited in the context of high-dynamic compression and<br />extended to high-dynamic tension. The model is based on the assumptions (i) that cracking will start if the quasistatic<br />material strength is reached, and (ii) that the high-dynamic strength gain refers to the increase of the stress<br />during the failure process of the tested specimen. The model explains the behavior of cylindrical specimens made<br />of dry cement paste, mortar, and concrete, subjected to high-dynamic compression. It also elucidates the performance<br />of cylindrical specimens made of dry mortar and concrete, subjected to high-dynamic tension. It is<br />concluded that the high-dynamic strength gain is a structural effect and that structures will be damaged if the<br />dynamic stress exceeds the quasi-static strength, no matter how fast the stress is increased and how short the<br />stress pulse lasts.
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