Gamma and neutron attenuation properties of alkali-activated cement mortars

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dc.authorid0000-0001-9907-0225en_US
dc.contributor.authorOzturk, Buket Canbaz
dc.contributor.authorKızıltepe, Cavit Cağatay
dc.contributor.authorOzden, Banu
dc.contributor.authorGuler, Erkan
dc.contributor.authorAydin, Serdar
dc.date.accessioned2021-03-20T20:12:23Z
dc.date.available2021-03-20T20:12:23Z
dc.date.issued2020
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.description.abstractRadiation-shielding properties of alkali-activated cement (AAC) mortar mixtures prepared using different precursors such as ground granulated blast furnace slag (GGBFS), fly ash (FA), metakaolin (MK) and waste clay material containing boron (WCB) were investigated comparatively with Ordinary Portland Cement (OPC) mixture. The gamma linear attenuation coefficients of the mixtures were determined both experimentally and theoretically. The experimental coefficients of the mixtures were measured with NaI(Tl) detection system for gamma energies of Cs-137 (662 keV) and Co-60 (1173 and 1332 keV) and the gamma transmission parameters (half-value layer, HVL; tenth-value layer, TVL and mean free path, MFP) were determined using these coefficient values. The theoretical coefficients of the mixtures were calculated using XCOM software for the energy range of 10-3000 keV. In addition, neutron attenuation coefficients of the mortar mixtures were theoretically calculated with the NCNR computation software for thermal (0.025-1 eV), slow (1-10 eV), resonance (10-300 eV), intermediate (300 eV-1 MeV) and the fast neutrons (1 MeV-20 MeV). Test results indicated that GGBFS and FA based alkali-activated cement mortars had similar gamma attenuation properties to the OPC mortar while the WCB and MK-incorporating AAC mixtures had slightly worse properties in this respect. In terms of thermal and slow neutron shielding properties only AAC mixtures containing WCB showed significantly better behaviour compared to OPC. For neutrons having higher energy levels than slow neutrons, all AAC and OPC mortar mixtures showed comparable properties.en_US
dc.identifier.doi10.1016/j.radphyschem.2019.108478en_US
dc.identifier.issn0969-806X
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttp://doi.org/10.1016/j.radphyschem.2019.108478
dc.identifier.urihttps://hdl.handle.net/20.500.12885/529
dc.identifier.volume166en_US
dc.identifier.wosWOS:000501394400050en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorKızıltepe, Cavit Cağatay
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofRadiation Physics And Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAlkali-activated cement mortarsen_US
dc.subjectGamma linear attenuationen_US
dc.subjectTransmission thicknessen_US
dc.subjectNeutron attenuationen_US
dc.subjectXCOMen_US
dc.subjectNCNRen_US
dc.titleGamma and neutron attenuation properties of alkali-activated cement mortarsen_US
dc.typeArticleen_US

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