Magnetized modifi ed water could signifi cantly aff ect the dissolution and crystallization process of raw gypsum, while the

mechanism was still unclear. In this work, the enhancement mechanism of raw gypsum solubility by magnetized modifi ed

water was fi rst systemically investigated. Viscosity, surface tension analysis, scanning electron microscope (SEM), Fourier

transform infrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS) exhibited that magnetization treatment

could signifi cantly change the properties of distilled water and the microstructure of raw gypsum. Magnetization treatment

reduced the surface tension and viscosity of distilled water and increased the proportion of hydrophilic hydroxyl group in

distilled water, which promoted the molecular affi nity between water molecules and raw gypsum, resulting in an enhanced

affi nity between Ca 2+ ions and water molecules at the active site of raw gypsum surface. In addition, an applied magnetic fi eld

leaded to a decreased crystallinity and an increase in the (020) interplanar spacing of raw gypsum, which was conducive to

contact with water, and fi nally enhanced the solubility of raw gypsum by 65.50%. This study can provide a theoretical basis

for the use of magnetized modifi ed water to regulate the dissolution behavior of raw gypsum.