Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/161116
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dc.contributor.authorDung, Nguyen Tienen_US
dc.contributor.authorUnluer, Ciseen_US
dc.date.accessioned2022-08-16T05:37:30Z-
dc.date.available2022-08-16T05:37:30Z-
dc.date.issued2020-
dc.identifier.citationDung, N. T. & Unluer, C. (2020). Influence of accelerated hydration and carbonation on the performance of reactive magnesium oxide concrete. Advances in Cement Research, 32(2), 78-90. https://dx.doi.org/10.1680/jadcr.17.00186en_US
dc.identifier.issn0951-7197en_US
dc.identifier.urihttps://hdl.handle.net/10356/161116-
dc.description.abstractThe low dissolution of magnesium oxide (MgO) limits the performance of carbonated reactive magnesium oxide cement (RMC)-based formulations. The initial acceleration of hydration (IAH) of RMC samples involving the use of sodium bicarbonate (NaHCO3) (SBC) was enabled by way of the adjustment of curing conditions. The influence of IAH and SBC on hydration kinetics was evaluated by isothermal calorimetry, hydration degree and pH measurements. Mechanical performance results were supported by X-ray diffraction, thermogravimetric analysis and scanning electron microscopy, which identified the amount and morphology of the final phases. The use of IAH increased Mg2+ concentration and enhanced hydration and carbonation at early ages. The introduction of SBC increased CO32- concentration by providing higher initial pH and additional HCO3- that stimulated carbonation at later ages. RMC samples involving IAH and SBC outperformed others, resulting in ∼130% higher 28 d compressive strengths than the control. This increased performance was associated with improvements in the morphology and amount of carbonates, which were assessed by thermal analysis.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.language.isoenen_US
dc.relationRG 95/16en_US
dc.relation.ispartofAdvances in Cement Researchen_US
dc.rights© 2018 Thomas Telford (ICE Publishing). All rights reserved.en_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleInfluence of accelerated hydration and carbonation on the performance of reactive magnesium oxide concreteen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.identifier.doi10.1680/jadcr.17.00186-
dc.identifier.scopus2-s2.0-85078237747-
dc.identifier.issue2en_US
dc.identifier.volume32en_US
dc.identifier.spage78en_US
dc.identifier.epage90en_US
dc.subject.keywordsAccelerationen_US
dc.subject.keywordsCompressive Strengthen_US
dc.description.acknowledgementThe authors would like to acknowledge the financial support from the Singapore MOE Academic Research Fund Tier 1 (RG 95/16) for the completion of this research project.en_US
item.grantfulltextnone-
item.fulltextNo Fulltext-
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