Investigation of fire and chemical effects on the properties of alkali-activated lightweight concretes produced with basaltic pumice aggregate

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dc.authoridCELIKTEN, SERHAT/0000-0001-8154-7590
dc.contributor.authorSaridemir, Mustafa
dc.contributor.authorCelikten, Serhat
dc.date.accessioned2024-11-07T13:31:30Z
dc.date.available2024-11-07T13:31:30Z
dc.date.issued2020
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractThis paper evaluates the properties of alkali-activated lightweight concretes (AALWCs) produced with basaltic pumice aggregate. The AALWC mixtures using the replacement ratios of 0, 25 and 50% blast furnace slag (BFS) by weight of fly ash (FA) are produced in addition to a reference lightweight concrete (RLWC) produced by only Portland cement. Sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) are employed as activating agents in the AALWC mixtures. The experimental studies are performed to investigate the properties of AALWCs. In these studies, the strength properties like compressive strength (f(c)), flexural strength (f(fs)) and splitting tensile strength (f(sts)) are determined. Moreover, the durability properties such as water absorption, acid and sulfate attacks resistance, and behaviour at elevated temperatures are studied. The residual f(c) and mass loss of lightweight concretes (LWCs) including the RLWC are examined after the durability tests. The results of AALWCs are compared with each other and RLWC. The change in the microstructures of LWCs due to the elevated temperatures are researched by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) spot, X-ray diffraction (XRD) and polarized light microscope (PLM) analyses. The results show that the AALWCs have superior durability properties than the RLWC. Moreover, the recovery of wastes such as BFS and FA contributes to both reducing environmental pollution and reducing CO2 emissions. (C) 2020 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipNigde Omer Halisdemir University project Investigation of the properties of alkali-activated lightweight concretes [FEB2018/10-BAGEP]
dc.description.sponsorshipSEM, EDS and XRD analyses are performed with the devices in Central Laboratory of Nigde Omer Halisdemir University, 51240 Nigde, Turkey. Moreover, this study is supported by Nigde Omer Halisdemir University project Investigation of the properties of alkali-activated lightweight concretes, project code FEB2018/10-BAGEP.
dc.identifier.doi10.1016/j.conbuildmat.2020.119969
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85086823700
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2020.119969
dc.identifier.urihttps://hdl.handle.net/11480/14870
dc.identifier.volume260
dc.identifier.wosWOS:000573926800008
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
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.snmzKA_20241106
dc.subjectAlkali-activated lightweight concrete
dc.subjectStrength
dc.subjectDurability
dc.subjectBasaltic pumice
dc.subjectMicrostructure
dc.titleInvestigation of fire and chemical effects on the properties of alkali-activated lightweight concretes produced with basaltic pumice aggregate
dc.typeArticle

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