Effect of Polypropylene Fibers on Self-Healing and Dynamic Modulus of Elasticity Recovery of Fiber Reinforced Concrete

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dc.contributor.authorEl-Newihy, Adham
dc.contributor.authorAzarsa, Pejman
dc.contributor.authorGupta, Rishi
dc.contributor.authorBiparva, Alireza
dc.date.accessioned2018-03-30T15:37:10Z
dc.date.available2018-03-30T15:37:10Z
dc.date.copyright2018en_US
dc.date.issued2018-01
dc.description.abstractThis study aims to evaluate self-healing properties and recovered dynamic moduli of engineered polypropylene fiber reinforced concrete using non-destructive resonant frequency testing. Two types of polypropylene fibers (0.3% micro and 0.6% macro) and two curing conditions have been investigated: Water curing (at ~25 Celsius) and air curing. The Impact Resonance Method (IRM) has been conducted in both transverse and longitudinal modes on concrete cylinders prior/post crack induction and post healing of cracks. Specimens were pre-cracked at 14 days, obtaining values of crack width in the range of 0.10–0.50 mm. Addition of polypropylene fibers improved the dynamic response of concrete post-cracking by maintaining a fraction of the original resonant frequency and elastic properties. Macro fibers showed better improvement in crack bridging while micro fiber showed a significant recovery of the elastic properties. The results also indicated that air-cured Polypropylene Fiber Reinforced Concrete (PFRC) cylinders produced ~300 Hz lower resonant frequencies when compared to water-cured cylinders. The analyses showed that those specimens with micro fibers exhibited a higher recovery of dynamic elastic moduli.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThe authors would like to acknowledge the contribution of Propex Inc. for their donation of the fibers used in this study.en_US
dc.identifier.citationEl-Newihy, A., Azarsa, P., Gupta, R. & Biparva, A. (2018). Effect of Polypropylene Fibers on Self-Healing and Dynamic Modulus of Elasticity Recovery of Fiber Reinforced Concrete. Fibers, 6(1), 9. http://dx.doi.org/10.3390/fib6010009en_US
dc.identifier.urihttp://dx.doi.org/10.3390/fib6010009
dc.identifier.urihttp://hdl.handle.net/1828/9185
dc.language.isoenen_US
dc.publisherFibersen_US
dc.subjectconcrete self-healingen_US
dc.subjectdynamic modulus of elasticityen_US
dc.subjectfiber reinforced concreteen_US
dc.subjectImpact Resonance Methoden_US
dc.subjectcracken_US
dc.titleEffect of Polypropylene Fibers on Self-Healing and Dynamic Modulus of Elasticity Recovery of Fiber Reinforced Concreteen_US
dc.typeArticleen_US

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