Rate Sensitivity of Fracture Properties of HPC | ||
| ERJ. Engineering Research Journal | ||
| Article 4, Volume 37, Issue 4, October 2014, Pages 407-417 PDF (901.88 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/erjm.2014.66943 | ||
| Authors | ||
| Y.B.I. Shaheen; A.Abd El-Hamid Hamada; M. Ahmed Elsisey | ||
| Abstract | ||
| The response of concrete for dynamic loading is of interest in a variety of civilian and military applications. Characterization of the behavior of concrete under dynamic loading is a prerequisite for the design and analysis of these structures. This paper present the results of a series of experiments conducted to investigate the rate sensitivity and the effectiveness of fiber inclusions in the improvements of fracture toughness of High Performance Concrete (HPC)beams. Single-edge notched beams (0.5 notch ratio) were loaded in three point bending over a wide range of displacement rates (Do). Load-displacement curves show that their peak is higher as the Do increases, whereas the corresponding displacement is almost constant. Fracture energy, G f also increases but only under Do beyond a threshold value. The experimental finding of the present work addressed the positive roles of fibers (steel and polypropylene) in improving the performance of concrete under dynamic loading. | ||
| Keywords | ||
| Fracture mechanics; High performance concrete (HPC); Volume fraction, bending test | ||
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