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Rate and scale effects in fracture of concrete and rocks

Acronimo FERAS

Abstract High-rate dynamic fracture of concretes and rocks is of a great theoretical and practical interest. This is connected with a wide variety of applications where high-rate effects cannot be neglected if one wants to receive reasonable coincidence between theoretical prediction and reality. The applications include fracture mechanics of structures and geological objects that can (or should) be affected by intensive high-rate loads. Practical examples include antiterroristic protection, seismic safety of buildings, high-speed transport infrastructure, tunnel boring etc. In this connection the central problem consists in formulation of reliable and simple-to-use criterion being able to predict fracture of concrete and rocks under high-rate loads (impact, explosive, etc.). Planned joint research is concentrated on implementation of new experiments with concrete and rocks loaded using Swiss (Modified Hopkinson bar) and Russian (magnetic pulse installation) equipment able of creating intense short high-rate loads. The activities will also be aimed on studies of fracture on different scale levels, that will probably lead to improvement of high-rate fracture criteria for concrete and rocks.

Enti SUPSI coinvolti Laboratorio SUPSI Dynamat

Persone coinvolte Daniele Forni, Gianmario Riganti

Responsabili Ezio Cadoni

Data di inizio progetto 1 giugno 2011

Data di chiusura progetto 1 dicembre 2011