Mini Symposia > MS2 : Dynamic failure of concrete and fibre-reinforced cement-based composites

MS2: Dynamic failure of concrete and fibre reinforced cement-based composites

Organisers: J. Ožbolt & V. Mechtcherine

Dynamic fracture is an important issue in safety assessment of structures under extreme loading. It is well known that concrete like materials exhibit dynamic response that strongly depends on the loading rate. With increase in the loading rate the resistance is increasing, failure mode is changing and there is a crack branching phenomena. We also know that with increasing loading rate the role of inertia increases at global as well as local (even micro) level. This all holds true also for fibre-reinforced cement-based composites (FRCC), while the fractures processes in such materials are strongly affected by fibre reinforcement. To use their great potential purposefully and to optimize them for particular scenarios of dynamic loading, a comprehensive knowledge of material and structural behavior is needed.

In the framework of the workshop a number of not yet well understood fundamental questions should be discussed, for example: How does the strain rate influence material properties, strength, crack propagation, crack bridging and fracture energy? What is the reason behind phenomena of crack branching and change of the failure mode, also with respect of action of fibre reinforcement in form of short fibre and textile? What is the role of inertia? How the crack propagation influence tensile constitutive law of concrete and FRCC in case of quasi-static vs. dynamic tests? How and why the type, amount and shape of short fibers or textile reinforcement influence dynamic response? etc.

All contributions from the experimental, numerical and theoretical fields of research on impact and blast resistance are welcome. Moreover, presentations on industrial real life applications are also of a great interest and are welcome.

 

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