dc.contributor.author | Shi, Zhenguo | |
dc.contributor.author | Lothenbach, Barbara | |
dc.date.accessioned | 2021-10-26T08:27:21Z | |
dc.date.available | 2021-10-26T08:27:21Z | |
dc.date.created | 2020-09-10T17:02:08Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Cement and Concrete Research. 2020, 127 . | en_US |
dc.identifier.issn | 0008-8846 | |
dc.identifier.uri | https://hdl.handle.net/11250/2825567 | |
dc.description.abstract | Both alkalis and calcium play essential roles in the formation of alkali-silica reaction (ASR) products. Investigation of their combined effect helps to better understand the conditions of ASR. In this study, samples with a constant Ca/Si ratio of 0.3 but different K(or Na)/Si and K/Na ratios have been synthesized at 80 °C. Experimental studies and thermodynamic modelling show that a sufficient amount of K or Na is essential to initiate ASR; at low alkali concentrations C-S-H is stabilized instead. However, too high alkaline concentrations (≥900 mM at K(or Na)/Si ≥ 1) also favor C-S-H formation and suppress ASR product formation. The results reveal a strong effect of the alkalis (K and/or Na) on calcium concentrations and on the formation of ASR products; a maximum ASR product formation is observed at Na or K concentrations between 200 and 500 mM and at initial Ca/Si ratio between 0.1 and 0.4. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | The combined effect of potassium, sodium and calcium on the formation of alkali-silica reaction products | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | This is the authors' accepted manuscript to an article published by Elsevier. Locked until 6.11.2021 due to copyright restrictions. The AAM is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | en_US |
dc.source.pagenumber | 11 | en_US |
dc.source.volume | 127 | en_US |
dc.source.journal | Cement and Concrete Research | en_US |
dc.identifier.doi | 10.1016/j.cemconres.2019.105914 | |
dc.identifier.cristin | 1828859 | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |