Gypsum content determination in Portland cements by thermogravimetry

Gypsum quantitative determination in cements may be done from their thermogravimetric analysis (TG) data, which uses the mass of the water released from its gypsum dehydration during cement analysis, to determinate its content stoichiometrically. Depending on the operational conditions used to mill the gypsum with clinker, its partial dehydration may occur, which leads to unreal results when only unhydrated cement TG data are used. To solve this...