Thermal analysis of borogypsum and its effects on the physical properties of Portland cement

Strength and fresh properties of borogypsum concrete

“…This denser microstructure of mixture may be used to explain the increases in the compressive strength. It was mentioned that when 5% borogypsum mixes with water, it can give higher strength and stability than gypsum because the particles in hemihydrate are in close contact and the crystals produced form a dense and hardened mass [2,25].…”

“…There are a number of studies in the literature which investigated the use of borogypsum as a cement additive [1][2][3][4]. Some studies focused on the use of borogypsum in mortar production as a cement replacement [5][6][7][8].…”

Kinetic study of the thermal dehydration of borogypsum

“…High amount of boron content, which has toxicological effect leads economic losses and also causes environmental pollution [3][4][5]. To reduce pollution and disposal of this industrial waste, several works have been carried out for the utilization for borogypsum as calcium sulfate dihydrate (gypsum) in cement production [6][7][8][9][10][11][12]. It has been reported that the mortar obtained from the cement with calcinated borogypsum gives better mechanical strength than cement prepared using natural gypsum and borogypsum.…”

Thermal treatment of moroccan phosphogypsum

“…Cependant, les valeurs bibliographiques des températures correspondantes ont un écart remarquable : des pics ont été obtenus à 130-180, à 180-215 ou à 149-169°C, Sebbahi et Elbeyli [12,13]. Kacimi a étudié la valorisation du phosphogypse dans la production du ciment et son influence sur la température du traitement du clinker [14].…”