Energy absorption capacity of a sustainable Ultra-High Performance Fibre Reinforced Concrete (UHPFRC) in quasi-static mode and under high velocity projectile impact |
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| Affiliation: | 1. State Key Lab of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China;2. Department of the Built Environment, Eindhoven University of Technology, The Netherlands;3. ENCI HeidelbergCement Benelux, The Netherlands;1. State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science & Technology, Nanjing, 210007, China;2. State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Research Institute of Building Science, Nanjing, 210001, China;1. Department of Civil Engineering, The University of British Columbia, 6250 Applied Science Lane, Vancouver BC V6T 1Z4, Canada;2. School of Civil, Environmental and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea;1. Department of the Built Environment, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands;2. School of Civil Engineering, Wuhan University, 430072 Wuhan, PR China;3. College of Liberal Arts and Science, National University of Defense Technology, 410073 Changsha, PR China;1. Department of Architectural Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea;2. Department of Civil Engineering, The University of British Columbia, 6250 Applied Science Lane, Vancouver, BC V6T 1Z4, Canada |
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| Abstract: | This paper investigates the energy absorption capacity of a sustainable Ultra-High Performance Fibre Reinforced Concrete (UHPFRC) in quasi-static mode and under high velocity projectile impact. The design of the sustainable concrete mixtures aims on achieving a densely compacted cementitious matrix with a relatively low binder amount, employing the modified Andreasen & Andersen particle packing model. The experiments on UHPFRC are performed using a 4-point bending test and high velocity projectile impact tests. The obtained results show that although the utilization of hybrid steel fibre enhances the mechanical properties of the developed UHPFRC, the application of fibres with hooked ends is crucial in improving the energy absorption capacity of the sustainable UHPFRC in quasi-static mode. However, under high velocity projectile impact, the UHPFRC mixture with hybrid fibres shows a much better energy absorption capacity than the one with hooked steel fibres only, particularly in resisting the scabbing at the rear surface. The intrinsic mechanisms for the energy absorption capacity of the sustainable UHPFRC in quasi-static mode and under high velocity projectile impact are studied and analysed. |
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| Keywords: | Sustainable Ultra-High Performance Fibre Reinforced Concrete (UHPFRC) Energy absorption capacity Quasi-static mode High velocity projectile impact |
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