Optimization of reactive powder concrete by means of barite aggregate for both neutrons and gamma rays

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dc.authorid36782041200
dc.authorid56084370500
dc.authorid55225657200
dc.contributor.authorGökçe H.S.
dc.contributor.authorYalçınkaya Ç.
dc.contributor.authorTuyan M.
dc.date.accessioned20.04.201910:49:12
dc.date.accessioned2019-04-20T21:43:01Z
dc.date.available20.04.201910:49:12
dc.date.available2019-04-20T21:43:01Z
dc.date.issued2018
dc.departmentBayburt Üniversitesien_US
dc.description.abstractHigh performance concrete has been often preferred in special engineering structures and in challenging composites products. Researchers have recently focused on the radiation shielding characteristics of these type concrete mixtures due to rising nuclear industry in the developing world. In the study, performance of reactive powder concrete was researched with regard to gamma-ray and neutron attenuation when its normal weight aggregate replaced with heavyweight aggregate (barite). For this purpose, reactive powder concrete mixtures were prepared 100% quartz aggregate, 100% barite aggregate and their blending 50–50%, by volume. Some physical and mechanical characteristics such as density, compressive strength, fracture energy, flexural strength and modulus of elasticity of the mixtures were determined. Gamma-ray attenuation coefficients and transmission thickness values were theoretically established for commonly known gamma energies (661.7, 1173.2 and 1332.5 keV). Optimization of the reactive powder mixtures was performed for both neutron and gamma-ray attenuation at 8 MeV. As a result, barite significantly increased the gamma-ray attenuation coefficients of reactive powder concrete. The mechanical performance of reactive powder concrete, however, was markedly reduced as a result of barite substitution. Replacement of quartz by barite aggregate has a more adverse impact on flexural strength than that of compressive strength. A mix that contains 40% barite aggregate of total aggregate volume was found as an optimum RPC mixture for simultaneously shielding neutrons and gamma rays. © 2018 Elsevier Ltden_US
dc.identifier.doi10.1016/j.conbuildmat.2018.09.022
dc.identifier.endpage477
dc.identifier.issn0950-0618
dc.identifier.scopus2-s2.0-85053130200en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage470
dc.identifier.urihttps://dx.doi.org/10.1016/j.conbuildmat.2018.09.022
dc.identifier.urihttps://hdl.handle.net/20.500.12403/344
dc.identifier.volume189
dc.identifier.wosWOS:000449133200044en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Ltd
dc.relation.ispartofConstruction and Building Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBarite proportion
dc.subjectMechanical properties
dc.subjectOptimization
dc.subjectReactive powder concrete
dc.subjectSimultaneously shielding neutrons and gamma rays
dc.subjectAggregates
dc.subjectBarite
dc.subjectBending strength
dc.subjectBlending
dc.subjectCompressive strength
dc.subjectConcrete mixtures
dc.subjectConcrete products
dc.subjectDeveloping countries
dc.subjectElectromagnetic wave attenuation
dc.subjectHigh performance concrete
dc.subjectMechanical properties
dc.subjectMixtures
dc.subjectNeutrons
dc.subjectNuclear industry
dc.subjectOptimization
dc.subjectQuartz
dc.subjectRadiation shielding
dc.subjectEngineering structures
dc.subjectGamma-ray attenuation
dc.subjectGamma-ray attenuation coefficients
dc.subjectMechanical characteristics
dc.subjectMechanical performance
dc.subjectNeutron attenuation
dc.subjectReactive powder concrete
dc.subjectShielding characteristic
dc.subjectGamma rays
dc.subjectBarite proportion
dc.subjectMechanical properties
dc.subjectOptimization
dc.subjectReactive powder concrete
dc.subjectSimultaneously shielding neutrons and gamma rays
dc.subjectAggregates
dc.subjectBarite
dc.subjectBending strength
dc.subjectBlending
dc.subjectCompressive strength
dc.subjectConcrete mixtures
dc.subjectConcrete products
dc.subjectDeveloping countries
dc.subjectElectromagnetic wave attenuation
dc.subjectHigh performance concrete
dc.subjectMechanical properties
dc.subjectMixtures
dc.subjectNeutrons
dc.subjectNuclear industry
dc.subjectOptimization
dc.subjectQuartz
dc.subjectRadiation shielding
dc.subjectEngineering structures
dc.subjectGamma-ray attenuation
dc.subjectGamma-ray attenuation coefficients
dc.subjectMechanical characteristics
dc.subjectMechanical performance
dc.subjectNeutron attenuation
dc.subjectReactive powder concrete
dc.subjectShielding characteristic
dc.subjectGamma rays
dc.titleOptimization of reactive powder concrete by means of barite aggregate for both neutrons and gamma raysen_US
dc.typeArticleen_US

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