Open AccessEarly and late hydration of supersulphated cements of blast furnace slag with fluorgypsum
Author(s) -
M.E. Bazaldúa-Medellín,
Antonio F. Fuentes,
Alexander Gorokhovsky,
J.I. Escalante-Garcı́a
Publication year - 2015
Publication title -
materiales de construcción
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.539
H-Index - 30
eISSN - 1988-3226
pISSN - 0465-2746
DOI - 10.3989/mc.2015.06013
Subject(s) - ground granulated blast furnace slag , slag (welding) , materials science , metallurgy , blast furnace , environmental science , cement
The hydration, strength development and composition of hydration products of supersulphated cements were characterized from the first 48 hours up to 360 days. Two compositions of 80% Blast furnace slag, 10–15% Fluorgypsum and 10–5% Portland cement were cured in dry and wet conditions. The main hydration products were ettringite and C-S-H since the first hours and up to 360 days as evidenced by X-ray diffraction, thermal analysis and electron microscopy. The strength was favored by higher fluorgypsum contents and lower Portland cement contents. These cements generated heats of hydration of 40–57 KJ/Kg after 28 hours, which are lower than portland cement.Peer reviewe