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A platform for research: civil engineering, architecture and urbanism
Tensile behaviour of FRC under high strain-rate
Abstract This paper presents experimental results on two types of concrete reinforced with steel and polyvinyl-alcohol (PVA) fibres subjected to dynamic tensile loading. The tests were carried out by using a Modified Hopkinson Bar apparatus on fibre reinforced concrete notched-specimens under three different strain-rates (50, 100, and 200 s−1). From the experiments it was found that there is a significant enhancement in tensile strength with increasing strain-rates. The dynamic tests on steel FRC with the smaller loading rate (50 s−1) showed a strength similar to the one measured from static tests; however, for increasing loading rates, a remarkable decrease of post-peak strength and ductility occurs. In specimens with PVA fibres, an enhancement of the tensile strength was also observed and a significant reduction of fracture energy and ultimate deformation occurred. Some experimental aspects are also discussed as the specimen shape, its dimension, the loading rate as well as the different post-peak behaviour from static and dynamic tests.
Tensile behaviour of FRC under high strain-rate
Abstract This paper presents experimental results on two types of concrete reinforced with steel and polyvinyl-alcohol (PVA) fibres subjected to dynamic tensile loading. The tests were carried out by using a Modified Hopkinson Bar apparatus on fibre reinforced concrete notched-specimens under three different strain-rates (50, 100, and 200 s−1). From the experiments it was found that there is a significant enhancement in tensile strength with increasing strain-rates. The dynamic tests on steel FRC with the smaller loading rate (50 s−1) showed a strength similar to the one measured from static tests; however, for increasing loading rates, a remarkable decrease of post-peak strength and ductility occurs. In specimens with PVA fibres, an enhancement of the tensile strength was also observed and a significant reduction of fracture energy and ultimate deformation occurred. Some experimental aspects are also discussed as the specimen shape, its dimension, the loading rate as well as the different post-peak behaviour from static and dynamic tests.
Tensile behaviour of FRC under high strain-rate
Cadoni, Ezio (author) / Meda, Alberto (author) / Plizzari, Giovanni A. (author)
Materials and Structures ; 42 ; 1283-1294
2009-07-31
12 pages
Article (Journal)
Electronic Resource
English
Tensile behaviour of FRC under high strain-rate
| Online Contents | 2009
Tensile behaviour of FRC under high strain-rate
| Online Contents | 2009
Tensile behaviour of FRC under high strain-rate
| British Library Online Contents | 2009
Tensile behaviour of FRC under high strain-rate
| British Library Conference Proceedings | 2009
Tensile behaviour of FRC under high strain-rate
| Online Contents | 2009