Abstract The strength of specimens made of cementitious materials increases with increasing loading rate. Herein, the model of Fischer et al. (CCR 58, 2014, 186–200) is revisited in the context of high-dynamic compression and extended to high-dynamic tension. The model is based on the assumptions (i) that cracking will start if the quasi-static material strength is reached, and (ii) that the high-dynamic strength gain refers to the increase of the stress during the failure process of the tested specimen. The model explains the behavior of cylindrical specimens made of dry cement paste, mortar, and concrete, subjected to high-dynamic compression. It also elucidates the performance of cylindrical specimens made of dry mortar and concrete, subjected to high-dynamic tension. It is concluded that the high-dynamic strength gain is a structural effect and that structures will be damaged if the dynamic stress exceeds the quasi-static strength, no matter how fast the stress is increased and how short the stress pulse lasts.

中文翻译：

---

由胶凝材料制成的试样的高动态压缩和拉伸强度

摘要 胶凝材料试件的强度随着加载速率的增加而增加。在此，Fischer 等人的模型。(CCR 58, 2014, 186–200) 在高动态压缩的背景下重新审视并扩展到高动态张力。该模型基于以下假设：(i) 如果达到准静态材料强度，就会开始开裂，以及 (ii) 高动态强度增益是指受试件破坏过程中应力的增加. 该模型解释了由干水泥浆、砂浆和混凝土制成的圆柱形试样在高动态压缩下的行为。它还阐明了由干砂浆和混凝土制成的圆柱形试样在高动态张力下的性能。