Experimental study of scaling effect related to post-cracking behaviours of metal fibres reinforced concretes (MFRC)

摘要

Post-cracking behaviour in uniaxial tension of metal fibre-reinforced concretes (MFRC) constitutes the principal mechanical characteristic required for performing numerical analysis with this type of materials. This mechanical characteristic is obtained from a uniaxial tensile test performed on notched specimens. In this paper, the possible scale effect related to this mechanical characteristic is studied. To achieve this objective, nine specimens per three different specimen diameters and per three different MFRC mix designs are tested (81 specimens in total). The mean conclusion obtained is that there is no significant scale effect on the uniaxial tension post-cracking behaviour of MFRC (average post-cracking curves).