dc.contributor.author | Park, Solmoi | |
dc.contributor.author | Lothenbach, Barbara | |
dc.contributor.author | Jang, Jeong Gook | |
dc.contributor.author | Kim, Hyeong-Ki | |
dc.contributor.author | Lee, Namkon | |
dc.date.accessioned | 2023-03-30T06:50:42Z | |
dc.date.available | 2023-03-30T06:50:42Z | |
dc.date.created | 2023-03-15T18:29:08Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | ACS Sustainable Chemistry and Engineering. 2022, 11 (10), 4049-4063. | en_US |
dc.identifier.issn | 2168-0485 | |
dc.identifier.uri | https://hdl.handle.net/11250/3061020 | |
dc.description.abstract | The present study investigates the carbonation of slags activated by NaOH, Na2SiO3, Na2CO3, and Na2SO4. The main hydrates in those activated with NaOH or Na2SiO3 were C-(N-)A-S-H, strätlingite, and MgAl-layered double hydroxide phases as observed using different experimental characterization techniques and thermodynamic modeling. The use of a Na2CO3 activator led to the formation of calcium carbonate and monocarbonate instead of strätlingite, and Na2SO4 to ettringite formation. Carbonation of the alkali-activated slags in a powdered form at 1 vol % concentration of the CO2 environment proceeded rapidly, while little change was observed after 7 d. The main carbonation products commonly identified were calcium carbonate, carbonate containing-MgAl-layered double hydroxide, and N-A-S-H. In Na2SiO3- and Na2SO4-activated slags, M-S-H formation was predicted, which destabilized the MgAl-layered double hydroxide phases. Strätlingite and monocarbonate, which were initially present or formed as a transient phase, were transformed to N-A-S-H during carbonation, while C-(N-)A-S-H was only partially decalcified and destabilized. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Chemical Society | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Thermodynamic Modeling and Experimental Study of Carbonation of Alkali-Activated Slag Cements | en_US |
dc.title.alternative | Thermodynamic Modeling and Experimental Study of Carbonation of Alkali-Activated Slag Cements | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.source.pagenumber | 4049-4063 | en_US |
dc.source.volume | 11 | en_US |
dc.source.journal | ACS Sustainable Chemistry and Engineering | en_US |
dc.source.issue | 10 | en_US |
dc.identifier.doi | 10.1021/acssuschemeng.2c05789 | |
dc.identifier.cristin | 2134265 | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |