Dynamic behavior of a Mediterranean natural stone under tensile loading |
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| Authors: | Domenico Asprone Ezio Cadoni Andrea Prota Gaetano Manfredi |
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| Affiliation: | 1. Department of Structural Engineering, University of Naples “Federico II”, Naples, Italy;2. University of Applied Sciences of Southern Switzerland, Lugano, Switzerland;1. School of Civil and Resource Engineering, the University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia;2. The Australian Centre for Geomechanics, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia;1. ISISE, Department of Civil Engineering, University of Minho, Guimarães, Portugal;2. Department of Mechanical Engineering, University of Coimbra, Coimbra, Portugal;1. Department of Civil and Environmental Engineering, University of Catania, Italy;2. Laboratory of Structural and Material Testing, University of Catania, Italy;1. School of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, China;2. ARC Centre of Excellence for Geotechnical Science and Engineering, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, Australia |
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| Abstract: | Historical buildings are important structures commonly occurring in Mediterranean cities. The behavior of their constituent materials under high dynamic loads is fundamental to investigate the vulnerability of such structures under extreme dynamic events. The main aim of our investigation was to study the effect of high dynamic loading conditions on a classical porous natural stone from the Naples area, namely yellow tuff, used in hundreds of historical buildings and monuments in Naples and other Mediterranean cities. Hence, dynamic characterization was performed through high strain-rate failure tensile tests. A wide range of strain-rates was investigated, from 10?5 s?1 to 50 s?1. The obtained data were processed to obtain stress–strain relationships at different strain-rate levels. The results reveal that Neapolitan yellow tuff presents a significantly strain-rate sensitive behavior, exhibiting dynamic tensile strength increasing with strain-rate, up to about three times that from quasi-static conditions in the case of very high strain-rates. Dynamic increase factors (DIFs) vs. strain-rate curves for tensile failure stress were also evaluated and discussed. |
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