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Immobilization of cesium with alkali-activated blast furnace slag
dc.creator | Komljenović, Miroslav M | |
dc.creator | Tanasijević, Gordana | |
dc.creator | Džunuzović, Nataša | |
dc.creator | Provis, J. L. | |
dc.date.accessioned | 2022-04-05T15:26:30Z | |
dc.date.available | 2022-04-05T15:26:30Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 0304-3894 | |
dc.identifier.uri | http://rimsi.imsi.bg.ac.rs/handle/123456789/1321 | |
dc.description.abstract | Alkali-activated binders (AABs), as a promising alternative to Portland cement, are now being used on a commercial scale in various applications around the world, including hazardous and radioactive waste immobilization. In this paper, the leaching resistance, strength, and nanostructural alteration of alkali-activated blast furnace slag (AABFS) doped with 2 % and 5 % cesium were investigated. The addition of cesium caused a significant increase in the compressive strength of AABFS, followed by mild strength reduction after leaching. AABFS can be considered a potentially efficient matrix for cesium immobilization, since the mean leachability index in both cases (2 % and 5 % of Cs added) was above the threshold value of 6. Both doping with Cs and leaching caused the transformation of the AABFS nanostructure. The majority of the aluminum that was released from the C-A-S-H gel due to leaching remained within the AABFS matrix, initiating gel reconstruction: the C-A-S-H gel was converted to C-S-H gel, and an additional N-(C)-A-S-H gel was also formed. Cesium was preferentially associated with the N-(C)-A-S-H gel rather than with the C-A-S-H gel. The results of this research seem to be in good agreement with the Cross-linked Substituted Tobermorite Model (CSTM). | en |
dc.publisher | Elsevier, Amsterdam | |
dc.relation | NATO SPS programme [G5402] | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/34026/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Journal of Hazardous Materials | |
dc.subject | Solidification | en |
dc.subject | Nanostructure | en |
dc.subject | Leaching | en |
dc.subject | Hazardous waste | en |
dc.subject | Alkali-activated binder | en |
dc.title | Immobilization of cesium with alkali-activated blast furnace slag | en |
dc.type | article | |
dc.rights.license | BY | |
dc.citation.other | 388: - | |
dc.citation.rank | aM21 | |
dc.citation.volume | 388 | |
dc.identifier.doi | 10.1016/j.jhazmat.2019.121765 | |
dc.identifier.fulltext | http://rimsi.imsi.bg.ac.rs/bitstream/id/257/1318.pdf | |
dc.identifier.pmid | 31928790 | |
dc.identifier.scopus | 2-s2.0-85077709263 | |
dc.identifier.wos | 000524462500040 | |
dc.type.version | publishedVersion |