Impact of silica gel G on mechanical and microstructural properties of magnesium oxychloride Scientific paper
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Abstract
Magnesium oxychloride cement (MOC), a type of Sorel’s cement, has gained renewed attention as a sustainable building material due to its low carbon footprint and energy consumption. However, its application in construction remains limited, primarily due to its inadequate moisture resistance and reduced early-age strength under elevated temperature conditions. This research investigates the impact of silica gel G (SG) on the properties of MOC. SG was incorporated into MOC at varying proportions (0–20 wt. % MgO) to form MOC–SG composites. The study evaluated the physical and mechanical properties of these composites, including setting time, moisture ingress resistance and compressive strength. Additionally, FTIR, PXRD, SEM-EDX and TGA analyses were conducted to examine the crystalline phases of the composites. SG acts as a binding agent, enhancing the strength and durability of the composite. This research demonstrates the potential of MOC–SG composites as promising sustainable building material. Results indicate that the addition of 5 % SG significantly improves the properties of MOC.
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Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution license 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
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Council of Scientific and Industrial Research, India
Grant numbers 201610163511
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