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Reinforcement effects of polyvinyl alcohol and polypropylene fibers on flexural behaviors of sulfoaluminate cement matrices |
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| Affiliation: | 1. School of Civil Engineering, Central South University, Changsha, Hunan 410083, PR China;2. Center for Built Infrastructure Research, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia;3. Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, USA;4. Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia;1. Department of Civil Engineering, Indian Institute of Technology Kharagpur, India;2. Material Science Centre, Indian Institute of Technology Kharagpur, India;3. Ranbir and Chitra Gupta School of Infrastructure and Management, Indian Institute of Technology Kharagpur, India;2. School of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, China;1. Research Group RecyCon, Materials and Constructions, Department of Civil Engineering, KU Leuven, Campus Bruges, 8200 Bruges, Belgium;2. Sustainable Materials Lab, Department of Chemical Engineering, KU Leuven, Campus Kulak Kortrijk, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium;3. School of Civil Engineering, National Engineering Laboratory for High Speed Railway Construction, Central South University, Changsha 410075, China |
| Abstract: | The fracture behavior of unoiled/uncoated polyvinyl alcohol (PVA) fiber reinforced sulphoaluminate cement (SAC) matrices was experimentally investigated and compared with those of polypropylene (PP) fiber reinforced SAC and PVA fiber reinforced Portland cement (PC) matrices in this study. In the experimental investigation, three-point bending tests were carried out for notched fiber reinforced cement beams. Special attentions were paid on their deflection-hardening and multiple crack patterns. The different flexural behaviors between the plain SAC and PC matrices were evaluated using the double-K fracture model. The results indicate that the PVA fiber reinforced SAC matrices exhibited better flexural behaviors when compared with the PVA fiber reinforced PC matrix having comparable matrix strength. The bond strength between SAC matrix and PVA fiber are relatively better than that between the counterpart PC matrix and PVA fiber, while the bond strength between SAC matrix and PVA fiber is obviously stronger than that between the SAC and PP fibers. |
| Keywords: | Sulfoaluminate cement Polyvinylalcohol (PVA) fiber Polypropylene (PP) fiber Flexural behaviors |
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