Low-velocity flexural impact response of fiber-reinforced aerated concrete |
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| Affiliation: | 1. Department of Civil Environmental Engineering and Architecture, University of Parma, Parco Area delle Scienze 181/A, I 43124 Parma, Italy;2. Department of Civil and Mechanical Engineering, University of Cassino and SL, Via G. Di Biasio 43, I 03043 Cassino, Italy;1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China;2. Department of Structural Engineering, Magnel Laboratory for Concrete Research, Ghent University, Technologiepark-Zwijinaarde 904, 9052 Ghent, Belgium;1. School of Engineering and Resources, Walailuk University, Nakhornsithammarat, Thailand;2. School of Energy, Environment and Materials, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand;3. Department of Civil Engineering, Faculty of Engineering, Prince of Songkhla University, Songkhla, Thailand;1. The Join Graduated School of Energy and Environment, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand;2. School of Energy, Environment and Materials, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand;3. College of Industrial Technology, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand;4. Center for Energy Technology and Environment, Ministry of Education, Thailand;1. School of Materials Science and Engineering, Xi’an University of Architecture & Technology, Xi’an, 710055, China;2. Shanxi NITYA New Materials Technology Co. Ltd, Xi’an, 710055, China |
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| Abstract: | Impact response of fiber-reinforced aerated concrete was investigated under a three-point bending configuration based on free-fall of an instrumented impact device. Two types of aerated concrete: plain autoclaved aerated concrete (AAC) and polymeric fiber-reinforced aerated concrete (FRAC) were tested. Comparisons were made in terms of stiffness, flexural strength, deformation capacity and energy absorption capacity. The effect of impact energy on the mechanical properties was investigated for various drop heights and different specimen sizes. It was observed that dynamic flexural strength under impact was more than 1.5 times higher than the static flexural strength. Both materials showed similar flexural load carrying capacity under impact, however, use of 0.5% volume fraction of polypropylene fibers resulted in more than three times higher flexural toughness. The performed instrumented impact test was found to be a good method for quantifying the impact resistance of cement-based materials such as aerated concrete masonry products. |
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| Keywords: | Aerated concrete Fiber-reinforced concrete Impact Instrumentation Stiffness Toughness |
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