A new group of MgO-bearing binders has been developed recently which showed improved sustainability and technical performance compared to Portland cement (PC). However, the application of these MgO-bearing binders in the Solidification/Stabilisation (S/S) techniques is very limited. This study investigates the three-year performance of a highly contaminated soil treated by in-situ S/S using MgO...

The thermal decomposition of hydrotalcites (HTs) with different interlayer anions in the 298-523 K region has been investigated by using transmission electron microscopy (TEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and IR, 27Al MAS-NMR and X-ray absorption near-edge structure (XANES) spectroscopy. The thermal stability of the HT with interlayer oxalate was remarkably higher...

MgO cements have great potential for carbon sequestration as they have the ability to carbonate and gain strength over time. The hydration of reactive MgO occurs at a similar rate as ordinary Portland cement (PC) and forms brucite (Mg(OH)₂, magnesium hydroxide), which reacts with CO₂ to form a range of hydrated magnesium carbonates (HMCs). However, the formation of HMCs within the MgO-CO₂-H₂O s...

A novel and aqueous gel-casting process has been successfully developed to fabricate porous MgAl₂O₄ ceramics by using hydratable alumina and MgO powders as raw materials and deionized water as hydration agent. The effects of different amounts of deionized water on the hydration properties, apparent porosity, bulk density, microstructure, pore size distribution and compressive strength of the sa...

Mg is one of the few materials choice for biodegradable implants, despite its rapid degradation when used without surface protection treatment. This study presents effect carbonation time on formation hydrophobic carbonate coatings grown pure magnesium using a simple, green chemical conversion method in carbonated water. The evolution coating with immersion carbonating solution was studied orde...

Abstract. We report the results of friction experiments on brucite under both dry and wet conditions various normal stresses (10–60 MPa). The final coefficients were determined to be 0.40 0.26 for cases, respectively, independent stress. Under conditions, velocity-weakening behavior was observed in all at stresses. velocity weakening low stress (10 20 MPa), whereas strengthening a higher applie...