An experimental and numerical study of reinforced ultra-high performance concrete slabs under blast loads |
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| Affiliation: | 1. School of Civil, Environmental and Mining Engineering, The University of Adelaide, North Terrace, SA 5005, Australia;2. Tianjin Chengjian University & University of Adelaide Joint Research Centre on Disaster Prevention and Mitigation, Australia;3. Department of Civil Engineering, Curtin University, Kent Street, Bentley, WA 6845, Australia;1. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA;2. U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA;3. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, USA;1. Tianjin University and the University of Western Australia Joint Research Centre of Protective Structures, Tianjin, China;2. School of Civil and Resource Engineering, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia;1. Department of Civil Engineering, University of Missouri Kansas City, 352 Flarsheim Hall, 5100 Rockhill Road, Kansas City, MO 64110, USA;2. U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Rd, Vicksburg, MS 39180, USA;1. School of Civil Engineering and Surveying, University of Portsmouth, Portland Building, Portland Street, Portsmouth PO1 3AH, UK;2. Department of Engineering, University of Liverpool, Brownlow Hill, Liverpool L69 3GH, UK;3. VSL Infrastructure Protection Ltd, 25 Senoko Way, Woodlands East Industrial Estate, Singapore 758047, Singapore |
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| Abstract: | ![]()
Ultra-high performance concrete (UHPC) which is characterized by high strength, high ductility and high toughness has been widely applied in modern structure construction. Outstanding mechanical feature of UHPC not only enables strong yet slim structure design but also highlights its potential in protective engineering against extreme loads like impact or explosion. In this research a series of reinforced concrete slabs are tested to determine their response under explosive loading conditions. Concrete materials used in the slab construction are ultra-high strength concrete (UHPC) and normal strength concrete (NSC). In total five slabs are tested including four UHPC slabs with varying reinforcement ratios and one control NSC slab with normal reinforcement. Explosive charges with TNT equivalent weights ranging from 1.0 to 14.0 kg at scaled distances ranging from 0.41 to 3.05 m/kg1/3 are used in the current experiments. Test results verified the effectiveness of UHPC slabs against blast loads. Numerical models are established in LS-DYNA to reproduce the field blast tests on UHPC slabs. The numerical results are compared with the field test data, and the feasibility and validity of the numerical predictions of UHPC slab responses are demonstrated. |
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| Keywords: | UHPC slab Blast load Experimental tests Numerical simulation |
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