The influence of elevated temperature on strength and microstructure of high strength concrete containing ground pumice and metakaolin

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dc.authorid0000-0001-7320-8409
dc.authorid0000-0003-3459-329X
dc.authorid0000-0001-8154-7590
dc.contributor.authorSaridemir, M.
dc.contributor.authorSevercan, M. H.
dc.contributor.authorCiflikli, M.
dc.contributor.authorCelikten, S.
dc.contributor.authorOzcan, F.
dc.contributor.authorAtis, C. D.
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2016
dc.departmentNiğde ÖHÜ
dc.description.abstractA laboratory study is performed to evaluate the influence of elevated temperature on the strength and microstructural properties of high strength concretes (HSCs) containing ground pumice (GP), and blend of ground pumice and metakaolin (MK) mixture. Twelve different mixtures of HSCs containing GP and MM were produced, water-to-binder ratio was kept constant as 0.20. Hardened concrete specimens were exposed to 250 degrees C, 500 degrees C and 750 degrees C elevated temperatures increased with a heating rate of 5 degrees C/min. Ultrasound pulse velocity (U-pv), compressive strength (f(c)), flexural strength (f(fs)) and splitting tensile strength (f(sts)) values of concrete samples were measured on unheated control concrete and after air-cooling period of heated concrete. The crack formation and alterations in the matrix, interface and aggregate of HSCs were examined by X-ray diffraction (XRD), scanning electron microscope (SEM) and polarized light microscope (PLM) analyses. XRD, SEM and PLM analyses have shown that, increasing target temperature result with decrease in mechanical properties i.e. U-pv, f(c), f(fs) and f(sts) values. Elevated temperature also results with crack formation, and increasing target temperature caused more cracks. Alterations in the matrix, interface and aggregate were, also observed by these analyses. The experimental results indicate that concrete made with MK + GP blend together as a replacement of cement in mass basis behaved better than control concrete made with cement only, and concrete containing only GP as a cement replacement. (C) 2016 Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.conbuildmat.2016.07.109
dc.identifier.endpage257
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-84984815345
dc.identifier.scopusqualityQ1
dc.identifier.startpage244
dc.identifier.urihttps://dx.doi.org/10.1016/j.conbuildmat.2016.07.109
dc.identifier.urihttps://hdl.handle.net/11480/3554
dc.identifier.volume124
dc.identifier.wosWOS:000385319300027
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherELSEVIER SCI LTD
dc.relation.ispartofCONSTRUCTION AND BUILDING MATERIALS
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectHigh strength concrete
dc.subjectElevated temperature
dc.subjectMicrostructure
dc.subjectInterface
dc.titleThe influence of elevated temperature on strength and microstructure of high strength concrete containing ground pumice and metakaolin
dc.typeArticle

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