Fracture energy of concrete at high loading rates in tension |
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| Authors: | Ahmed Brara Janusz R. Klepaczko |
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| Affiliation: | 1. National Center of Studies and Integrated Research on Building Engineering (CNERIB), Cité Nouvelle El-Mokrani, Souidania, Algiers, Algeria;2. Metz University, ISGMP, Laboratory of Physics and Mechanics of Materials, Ile de Saulcy – F-57045 METZ, Cedex, France |
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| Abstract: | The effect of high loading rates in tension on the failure energy and strength of concrete is reported in this paper. High loading rates exceeding 5000 GPa/s corresponding to strain rates higher than ∼120 s−1 can be applied by use of Hopkinson bar set-up designed to produce spall. Tension tests were performed on cylindrical specimens made of micro-concrete. At high loading rates, or strain rates, the failure energy of micro-concrete, as well as the strength, was found to substantially increase. |
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| Keywords: | Concrete Fracture energy Spalling High loading rates Tensile strength |
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