RT Journal Article
T1 Tailored setting times with high compressive strengths in bassanite calcium sulfoaluminate eco-cements
A1 García-Maté, Marta
A1 Londono-Zuluaga, Diana
A1 Gómez-de-la-Torre, María de los  Ángeles
A1 Ramírez-Losilla, Enrique
A1 Cabeza-Díaz, Aurelio
A1 García-Aranda, Miguel Ángel
A1 Santacruz-Cruz, María Isabel
K1 Cristalografía por rayos X
K1 Cemento
AB This work deals with the hydration of a calcium sulfoaluminate (CSA) eco-cement prepared with bassanite and different additives (type and content) at a fixed water/CSA ratio of 0.5. Pastes prepared with bassanite show high water demands, high viscosity values and short initial setting times which are related to the fast dissolution rate of bassanite and the subsequent precipitation of gypsum. These facts have a dramatic effect onto the mechanical strength values, and make necessary the addition of additives.Here, the addition of different amounts of specific retarders (polycarboxylate, tartaric acid and phosphonic acid) not only improved the workability of pastes and mortars, but also delayed the setting time, by modifying the dissolution rates of the phase(s), and improved mechanical strengths. Finally, mortars with high compressive strengths (46 and 84 MPa at 1 and 7 days of hydration, respectively) and, chiefly, tailored setting times with high strengths have been prepared.
PB Elsevier
SN 0958-9465
YR 2016
FD 2016-09
LK http://hdl.handle.net/10630/13622
UL http://hdl.handle.net/10630/13622
LA eng
NO Cement and Concrete Composites 72 (2016) 39-47
NO Funding from Junta de Andalucía (P11-FQM-7517 and P12-FQM-1656), FEDER/University of Málaga (FC14-MAT-23), MINECO (BIA2014-57658-C2-1-R and BIA2014-57658-C2-2-R, the latter co-funded by FEDER) are acknowledged.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 22 ene 2026