Setting Reactions of Gypsum Materials Investigated by X-Ray Diffraction

Abstract

Detection of X-ray diffraction peaks of CaSO₄·½H₂O and CaSO₄·2H ₂O was used to determine actual amounts of gypsum products and reactants at any time during setting. Experiments were then conducted to measure rates of gypsum product formation during setting of dental plaster and stone mixed at various WlP ratios.