RT Journal Article
T1 Hydration Reactions and Mechanical Strength Developments of Iron- Rich Sulfobelite Eco-cements
A1 Álvarez-Pinazo, Gema
A1 Santacruz-Cruz, María Isabel
A1 León-Reina, Laura
A1 García-Aranda, Miguel Ángel
A1 Gómez-de-la-Torre, María de los  Ángeles
K1 Construcciones de hormigón
AB Belite calcium sulfoaluminate (BCSA) cements are low-CO2 building materials. However, their hydration behavior and its effect on mechanical properties have still to be clarified. Here, we report a full multitechnique study of thehydration behavior up to 120 days of nonactivated and activated BCSA laboratory-prepared clinkers, with β- or αH-belite as main phase, respectively. The effects of the amount of gypsum added were also studied. The hydration and crystallization processes are reported and discussed in detail. Finally, shrinkage/expansion data are also given. The optimum amount of gypsum was close to10 wt %. Our study has demonstrated that β-belite reacts at a higher pace than α′H-belite, irrespective of the gypsum content.The hydration mechanism of belite determines the development of the mechanical strengths. These are much higher for activated BCSA cement, ∼65 MPa at 120 days, against ∼20 MPa for nonactivated BCSA cement, with the latter having larger amounts of stratlingite.
SN 1520-5045
YR 2013
FD 2013
LK http://hdl.handle.net/10630/13654
UL http://hdl.handle.net/10630/13654
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026