Improving the performance of reactive MgO cement-based concrete mixes

Tien-Dung Nguyen, Unluer Cise

Research output: Contribution to journalArticlepeer-review


Low hydration and high water demand of MgO limits strength gain in MgO cement-based formulations. This study enhanced the microstructure and performance of MgO concrete mixes by increasing hydration and lowering water demand via the introduction of hydration (HA) and dispersion (DA) agents. Hydration and carbonation mechanisms were evaluated by isothermal calorimetry, TGA, XRD, FTIR and SEM. HA increased MgO dissolution and brucite precipitation. DA reduced water content and resulted in denser microstructures by increasing CO2 diffusion. Formation of dense carbonate networks with improved morphologies resulted in 28-day strengths of 45 MPa, which were >50% higher than the control sample.
Original languageEnglish
Pages (from-to)747-758
JournalConstruction and Building Materials
Publication statusPublished - 15 Nov 2016


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