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August 22, 2026Next MaterialsOpen Access

Carbonation performance and CO₂ sequestration potential of magnesium oxysulfate cement incorporating thermally activated MgO-rich industrial waste

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Authors

ASAnila C. ShajuSDSudha DasPNPraveen Nagarajan

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Overview

Comparative study demonstrates enhanced carbon sequestration and mechanical performance in waste-derived magnesium oxysulfate cement, indicating viable low-carbon alternatives to Portland cement.

Key Points

  • To evaluate the mechanical properties, carbonation characteristics, and carbon dioxide sequestration capability of magnesium oxysulfate cement formulated from thermally activated, MgO-rich industrial byproducts.
  • Synthesized magnesium oxysulfate cement (MOSC) mortar using thermally activated, MgO-rich industrial waste and compared it against ordinary Portland cement (OPC) mortar.
  • Subjected mortar specimens to accelerated carbonation conditions comprising 3% CO₂, 65% relative humidity, and 24°C for 56, 63, and 70 days.
  • Evaluated carbonation depth, compressive strength, water absorption, and microstructural carbonate content using thermogravimetric analysis.
  • MOSC demonstrated deeper carbonation penetration and superior CO₂ reactivity compared to OPC across all exposure intervals.
  • Accelerated carbonation improved compressive strength and reduced water absorption in both binders, with MOSC frequently outperforming OPC.
  • Thermogravimetric analysis showed carbonate-related mass loss increased from 1.34% to 3.10% in MOSC, compared to an increase from 2.01% to 2.39% in OPC.

Cite This Study

Shaju et al. (2026) studied this question.

synapsesocial.com/papers/6a895effca7ade938187d33ehttps://doi.org/10.1016/j.nxmate.2026.103233
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Also Consider

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  4. 4Experimental Study on Preparation of Sustainable Low Carbon Magnesium Oxysulfate Cement (MOSC) Based on Brucite and Dilute Sulfuric Acid2026
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