Rony
Moderator
Abstract
The implementation of this study is based on methodology, exploring opportunities for adding of
inorganic mineral additives in suspension of β-hemihydrate form obtained from desulfo-gypsum. The
main purpose as to study the changes in gypsum slurry behaviour by incorporating three rates (5%,
15% and 25%) of Na-feldspar, dolomite and waste marble powder as substitutions of hemihydrate
material. The research framework includes tests based on standards for gypsum based building
materials. These incorporates analyzes of physical and chemical properties of the raw materials,
examination of prepared gypsum slurries and tests on the set composite samples. All types of mineral
additives included at gypsum mixture recipe have different morphological characteristics and
physicochemical properties, which impact in diverse ways of prepared gypsum bodies. The results
obtained show that the difference in structure, origin and chemical composition of minerals additives
determines the behaviour of prepared gypsum slurries and the properties of set gypsum bodies.
Key words: calcium sulphate, mineral additive, efficiency
The implementation of this study is based on methodology, exploring opportunities for adding of
inorganic mineral additives in suspension of β-hemihydrate form obtained from desulfo-gypsum. The
main purpose as to study the changes in gypsum slurry behaviour by incorporating three rates (5%,
15% and 25%) of Na-feldspar, dolomite and waste marble powder as substitutions of hemihydrate
material. The research framework includes tests based on standards for gypsum based building
materials. These incorporates analyzes of physical and chemical properties of the raw materials,
examination of prepared gypsum slurries and tests on the set composite samples. All types of mineral
additives included at gypsum mixture recipe have different morphological characteristics and
physicochemical properties, which impact in diverse ways of prepared gypsum bodies. The results
obtained show that the difference in structure, origin and chemical composition of minerals additives
determines the behaviour of prepared gypsum slurries and the properties of set gypsum bodies.
Key words: calcium sulphate, mineral additive, efficiency