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The effect of60co gamma irradiation on coal fly-ash geopolymer paste setting time
dc.creator | Rubinjoni, Luka | |
dc.creator | Stanković, S.J | |
dc.creator | Lončar, Biljana | |
dc.date.accessioned | 2023-06-01T10:19:36Z | |
dc.date.available | 2023-06-01T10:19:36Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 1451-3994 | |
dc.identifier.uri | https://riofh.iofh.bg.ac.rs/handle/123456789/707 | |
dc.description.abstract | Cementation is the baseline technology for conditioning of low to intermediate level radioac-tive 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/pow-ders/liquids and encapsulation of solids/compacted waste rely on the grout maintaining opti-mal flow (rheological 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 a60Co 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 dem-onstrated 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 | 43009, and contract no. 451-03-68/2020-14/200135. The authors would like to acknowledge the help of Dr. Miroslav Komljenović a | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Nuclear Technology and Radiation Protection | |
dc.subject | Setting time | en |
dc.subject | Geopolymer | en |
dc.subject | Gamma irradiation | en |
dc.subject | Alkali-activated binder | en |
dc.title | The effect of60co 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://riofh.iofh.bg.ac.rs/bitstream/id/314/704.pdf | |
dc.identifier.rcub | conv_1161 | |
dc.identifier.scopus | 2-s2.0-85092687663 | |
dc.identifier.wos | 000581726200008 | |
dc.type.version | publishedVersion |