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dc.contributor.author류두열-
dc.date.accessioned2019-11-27T20:42:30Z-
dc.date.available2019-11-27T20:42:30Z-
dc.date.issued2017-07-
dc.identifier.citationCONSTRUCTION AND BUILDING MATERIALS, v. 142, page. 363-375en_US
dc.identifier.issn0950-0618-
dc.identifier.issn1879-0526-
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S095006181730452X?via%3Dihub-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/115002-
dc.description.abstractThis study examines the rate dependent flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) beams with three different sizes. Two different loading rates (static and impact), fiber aspect ratios (l(f)/d(f) of 65 and 100), and fiber types (straight and twisted) were considered. Test results indicated that the static flexural performance, including the flexural strength and toughness, were improved by increasing the fiber aspect ratio or through the use of twisted steel fibers. The static flexural strength clearly decreased with an increase in specimen size due to a decrease in the number of fibers at the crack surface. The use of straight steel fibers with a higher aspect ratio of 100 provided the best impact resistance in terms of the highest post-cracking flexural strengths and the largest normalized energy dissipation rates, compared to those of twisted steel fibers and straight steel fibers with a reduced aspect ratio of 65. Thus, the use the straight steel fibers with high aspect ratios was recommended to improve the impact resistance of UHPFRC. Dynamic increase factor (DIF) on the flexural strength of UHPFRC beams was properly investigated with strain-rate, regardless of specimen size. In addition, there were no effects with regard to the fiber aspect ratio and type on the relationship between the DIF of the first-cracking flexural strength and the stress- (or strain-) rate. (C) 2017 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipThe authors wish to thank the Department of Civil Engineering at the University of British Columbia for providing financial support of this research. Continued support of IC-IMPACTS (Canada India Research Center of Excellence) is also appreciated.en_US
dc.language.isoen_USen_US
dc.publisherELSEVIER SCI LTDen_US
dc.subjectUltra-high-performance fiber-reinforced concreteen_US
dc.subjectFlexureen_US
dc.subjectImpacten_US
dc.subjectStrain-rateen_US
dc.subjectSize effecten_US
dc.subjectDynamic increase factoren_US
dc.titleSize-dependent impact resistance of ultra-high-performance fiber-reinforced concrete beamsen_US
dc.typeArticleen_US
dc.relation.volume142-
dc.identifier.doi10.1016/j.conbuildmat.2017.03.080-
dc.relation.page363-375-
dc.relation.journalCONSTRUCTION AND BUILDING MATERIALS-
dc.contributor.googleauthorYoo, Doo-Yeol-
dc.contributor.googleauthorBanthia, Nemkumar-
dc.relation.code2017006317-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ARCHITECTURAL ENGINEERING-
dc.identifier.piddyyoo-
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COLLEGE OF ENGINEERING[S](공과대학) > ARCHITECTURAL ENGINEERING(건축공학부) > Articles
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