TL;DR: In this paper, the effect of two calcareous fillers (ground limestone and reagent quality CaCO 3 ) on the compressive strength of Portland cement, was studied and compared with the corresponding effect of pozzolanic fillers and one non-calcareous, non-hydraulic filler (reagent quality caF 2 ).
TL;DR: In this article, the effects of phosphogypsum and purified phosphogypum on the hydration of Portland cement and trass cement were investigated by measuring setting time, strengths of pastes, and chemical analysis as well as the electron microscopic (SEM) observation of hydration products.
TL;DR: It can be inferred that the performance of the natural pozzolans as a mineral additive in CPB is dependent intimately on their pozzolanic characteristics.
TL;DR: In this article, the effects on the setting and mechanical properties of partly refined boro- and phosphogypsum mixed with Portland and trass cements were studied and compared with a Portland cement containing high grade natural gypsum.
TL;DR: It was concluded that refined borogypsum can be used for Portland and trass cements and its effects on the setting and mechanical properties of these mixes were studied.