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Portland cement–based materials represent the most widely used construction materials worldwide. However, their production and application are associated with significant environmental burdens, including high CO2 emissions and the depletion of natural aggregate resources. In response to the growing demand for environmentally responsible construction solutions, this study focuses on the development of building materials based on an alternative binder. Magnesium oxychloride cement (MOC) is considered a more sustai...

In an effort to develop binders with a reduced environmental impact, magnesium silicate hydrate (MSH) cement has recently attracted considerable attention. This binder belongs to the family of magnesium-based cements; however, unlike magnesium sulphate and magnesium oxychloride cements, it is classified as a hydraulic cement. It forms through the reaction of reactive magnesium oxide with silica sources in the presence of water, producing magnesium silicate hydrate (MSH) gel. Caustic-calcined magnesite, typically p...

Magnesium silicate hydrate (M-S-H) is a promising binder phase for the development of low carbon cementitious materials. However, its formation mechanisms, phase evolution, and dependence on curing conditions remain poorly understood, particularly during the early and intermediate stages of hydration. This study investigates the formation and development of M S-H in model systems using reactive MgO and diatomite as the silica source, focusing on Mg/Si molar ratios of 0.75, 0.90, 1.05, and 1.20 under controlled cur...