RT Journal Article
T1 Hydration and interactions between pure and doped C3S and C3A in the presence of different calcium sulfates
A1 Neto, José da Silva Andrade
A1 De Matos, Paulo R.
A1 Gómez-de-la-Torre, María de los  Ángeles
A1 Campos, Carlos E. M.
A1 Torres, Sandro M.
A1 Monteiro, Paulo J. M.
A1 Kirchheim, Ana Paula
K1 Yeso (Material)
AB This research studied the hydration of C3S-C3A-calcium sulfate systems made of combinations of two C3S (puretriclinic and Al-doped monoclinic), two C3A (pure cubic C3A and Na-doped orthorhombic), and two calciumsulfates (gypsum and hemihydrate). For each system, the hydration of four different SO3 contents (0.25–2.0 wt%)was assessed by calorimetry. The optimum SO3 content was fixed from calorimetry results, and the mixtures wereevaluated by in-situ XRD and TGA. The type of C3S was the factor that most affected the sulfate balance of thesystems. The mixes with Al-C3S produced a higher amount of ettringite in the first hours, resulting in muchearlier sulfate depletions when compared to the mixes with pure C3S. The mixes with ort-C3A also showed fastersulfate depletion due to its higher reactivity compared with cb-C3A. Finally, the replacement of gypsum byhemihydrate resulted in faster sulfate depletion caused by the faster hemihydrate dissolution
YR 2022
FD 2022
LK https://hdl.handle.net/10630/24536
UL https://hdl.handle.net/10630/24536
LA eng
NO Cement and Concrete Research, Volume 159, 2022, 106893
NO P18-RT-720 cofinanciado con FEDER
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 23 ene 2026