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dc.creatorRubinjoni, Luka
dc.creatorStanković, Srboljub J.
dc.creatorLončar, Boris
dc.date.accessioned2021-03-10T14:18:29Z
dc.date.available2021-03-10T14:18:29Z
dc.date.issued2020
dc.identifier.issn1451-3994
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/4432
dc.description.abstractCementation is the baseline technology for conditioning of low to intermediate level radioactive waste. Geopolymers, a class of alkali activated binders, are a promising new material for radioactive waste treatment. Coal fly-ash based geopolymers are a low-cost, low greenhouse gas footprint alternative to metakaolin based materials. Both the grouting of sludge/powders/liquids and encapsulation of solids/compacted waste rely on the grout maintaining optimal flow (theological properties) during the mixing and pouring operations, and achieving a set leading to proper long term solidification (mechanical properties). The initial and final setting time for fly-ash geopolymer paste, based on the SRPS EN 196-3 standard, has been measured upon irradiation by gamma rays in a Co-60 reference field positioned with a kerma air rate of 3.42 mGys(-1). The binder paste was prepared using fly-ash from the TENT B power plant's electrostatic filters without further sieving, activated by water glass with module 1.5 and mixed with distilled water until a satisfactory flow was obtained, and poured into the sample and control molds. The initial and final setting times for the irradiated sample and non-irradiated control were determined by the Vicat apparatus. The irradiated sample demonstrated an 11 % shorter initial setting time, and 16 % shorter final setting time, compared to the control.en
dc.publisherUniverzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43009/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/inst-2020/200135/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceNuclear Technology & Radiation Protection
dc.subjectgeopolymeren
dc.subjectsetting timeen
dc.subjectgamma irradiationen
dc.subjectalkali-activated binderen
dc.titleThe effect of co-60 gamma irradiation on coal fly-ash geopolymer paste setting timeen
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage153
dc.citation.issue2
dc.citation.other35(2): 150-153
dc.citation.rankM23
dc.citation.spage150
dc.citation.volume35
dc.identifier.doi10.2298/NTRP2002150R
dc.identifier.fulltexthttp://TechnoRep.tmf.bg.ac.rs/bitstream/id/2039/4429.pdf
dc.identifier.rcubconv_6240
dc.identifier.scopus2-s2.0-85092687663
dc.identifier.wos000581726200008
dc.type.versionpublishedVersion


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