Role of matrix structure and flaw size distribution modification on deflection hardening behavior of polyvinyl alcohol fiber reinforced engineered cementitious composites (PVA-ECC)

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dc.authorid0000-0002-3427-2317
dc.contributor.authorTosun Felekoğlu, Kamile
dc.contributor.authorGödek, Eren
dc.date.accessioned2020-02-03T10:38:42Z
dc.date.available2020-02-03T10:38:42Z
dc.date.issued2019en_US
dc.departmentHitit Üniversitesi, Teknik Bilimler Meslek Yüksekokulu, İnşaat Bölümü
dc.description.abstractThe multiple cracking and deflection hardening performance of polyvinyl alcohol fiber reinforced engineered cementitious composites (PVA-ECC) under four-point flexural loading have been investigated. Matrices with different binder combinations and W/B ratios (from 0.44 to 0.78) providing satisfactory PVA fiber dispersion were specially designed. Effect of pre-existing flaw size distribution modification on deflection hardening behavior was comparatively studied by adding 3 mm diameter polyethylene beads into the mixtures (6% by total volume). Natural flaw size distributions of composites without beads were determined by cross sectional analysis. The crack number and crack width distributions of specimens after flexural loading were characterized and the possible causes of changes in multiple cracking and deflection hardening behavior by flaw size distribution modification were discussed. Promising results from the view point of deflection hardening behavior were obtained from metakaolin incorporated and flaw size distribution modified PVA-ECCs prepared with W/B=0.53. The dual roles of W/B ratio and superplasticizer content on flaw size distribution, cracking potential and fiber-matrix bond behavior were evaluated. Flaw size distribution modification is found beneficial in terms of ductility improvement at an optimized W/B ratio.
dc.description.abstract????????????????????????PVA-ECC???????????????? ???????, ??????????????(W/B)?0.44~0.78?????? PVA ?????? ????????????????? 3 mm ??????????? 6%???????????? ???????????????????????????????????????????? ???????????????????????????????????????????? ????????????????? W/B=0.53 ?????????????????????? PVA-ECC, ???????????????? W/B ????????????????????? ???-???????????????? W/B ??????????????????????
dc.description.provenanceSubmitted by Zeynep Umut Arslan (umutarslan@hitit.edu.tr) on 2020-02-03T10:38:24Z No. of bitstreams: 0en
dc.description.provenanceApproved for entry into archive by Zeynep Umut Arslan (umutarslan@hitit.edu.tr) on 2020-02-03T10:38:42Z (GMT) No. of bitstreams: 0en
dc.description.provenanceMade available in DSpace on 2020-02-03T10:38:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2019en
dc.identifier.citationFelekoğlu, K. T., Gödek, E. (2019). Role of matrix structure and flaw size distribution modification on deflection hardening behavior of polyvinyl alcohol fiber reinforced engineered cementitious composites (PVA-ECC). Journal of Central South University, 26(12): 3279-3294.
dc.identifier.doi10.1007/s11771-019-4252-y
dc.identifier.endpage3294en_US
dc.identifier.issn2095-2899
dc.identifier.issue12en_US
dc.identifier.scopusqualityQ1
dc.identifier.startpage3279en_US
dc.identifier.urihttps://doi.org/ 10.1007/s11771-019-4252-y
dc.identifier.urihttps://hdl.handle.net/11491/5680
dc.identifier.volume26en_US
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherCentral South University of Technology
dc.relation.ispartofJournal of Central South University
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectFiber Reinforced Cementitious Compositesen_US
dc.subjectMetakaolinen_US
dc.subjectDeflection Hardeningen_US
dc.subjectMultiple Crackingen_US
dc.subjectFlaw Size Distributionen_US
dc.subject纤维增强胶凝复合材料en_US
dc.subject偏高岭土en_US
dc.subject挠度硬化en_US
dc.subject多重开裂en_US
dc.subject缺陷尺寸分布en_US
dc.titleRole of matrix structure and flaw size distribution modification on deflection hardening behavior of polyvinyl alcohol fiber reinforced engineered cementitious composites (PVA-ECC)
dc.title.alternative???????????????????????? ???????(PVA-ECC)?????????en_US
dc.typeArticle

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