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The effect of co-60 gamma irradiation on coal fly-ash geopolymer paste setting time
dc.creator | Rubinjoni, Luka | |
dc.creator | Stanković, Srboljub J. | |
dc.creator | Lončar, Boris | |
dc.date.accessioned | 2021-03-10T14:18:29Z | |
dc.date.available | 2021-03-10T14:18:29Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 1451-3994 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4432 | |
dc.description.abstract | Cementation 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.publisher | Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43009/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200135/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Nuclear Technology & Radiation Protection | |
dc.subject | geopolymer | en |
dc.subject | setting time | en |
dc.subject | gamma irradiation | en |
dc.subject | alkali-activated binder | en |
dc.title | The effect of co-60 gamma irradiation on coal fly-ash geopolymer paste setting time | en |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dc.citation.epage | 153 | |
dc.citation.issue | 2 | |
dc.citation.other | 35(2): 150-153 | |
dc.citation.rank | M23 | |
dc.citation.spage | 150 | |
dc.citation.volume | 35 | |
dc.identifier.doi | 10.2298/NTRP2002150R | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/2039/4429.pdf | |
dc.identifier.scopus | 2-s2.0-85092687663 | |
dc.identifier.wos | 000581726200008 | |
dc.type.version | publishedVersion |