Long-term mechanical performance of reactive magnesia cements incorporating fly ash
Source abstract
Abstract
In this research, after producing reactive magnesia (RM) directly from the calcination of magnesite, reactive magnesia cement (RMC) specimens with fly ash were prepared and cured in two different environments to investigate their long-term mechanical performance after carbonation. To investigate the effect of carbonation on microstructure, X-ray diffraction profiles of the RMC samples were obtained and analysed. It was found that the strength of the RMCs was highly affected by the dosage of RM and the curing regime. In spite of the presence of nesquehonite (MgCO3.3H2O) in RMCs having no Portland cement (PC), no type of magnesium carbonate crystal was found for the cements with PC after carbon dioxide curing. The strength increase in the RMCs could be due to the incorporation of Mg2+ ions in calcite crystals.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnesium Oxide Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Hacettepe University Department of Civil Engineering, , Ankara,
Middle East Technical University Department of Civil Engineering, , Ankara, Türkiye
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