RT Journal Article
T1 Reactivity of C3S and model cement in presence of Na2S2O3 and NaSCN
A1 Gonzalez-Panicello, Laura
A1 Gómez-de-la-Torre, María de los  Ángeles
A1 Palacios, Marta
K1 Cemento
AB The impact of NaSCN and Na2S2O3 on the reactivity, microstructure and morphology of C3S andmodel cement (with a clinker containing 85% C3S and 15% C3A) pastes was systematically investigated.Results concluded that both alkali salts mainly act enhancing the reactivity of the C3S phase while notsignificant influence on the reactivity of C3A was measured. While both admixtures rose the reactivity ofC3S over the studied 7 days of hydration, they only increased the reactivity of model cement pastes up to14–20 h. NaSCN and Na2S2O3 did not modify the C–S–H stoichiometry but they influenced its morphology.In particular, thicker convergent C–S–H needles were formed in pastes containing Na2S2O3 comparedto non-admixed systems, while a higher number of thinner C–S–H needles were formed in presence ofNaSCN. Furthermore, greater portlandite clusters and intermixing of AFm and C–S–H were observed in admixed C3S and model cement pastes, respectively, compared to plain systems.
PB Springer
YR 2023
FD 2023-01
LK https://hdl.handle.net/10630/25977
UL https://hdl.handle.net/10630/25977
LA eng
NO Materials and Structures (2023) 56:23
NO Open Access funding provided thanks to the CRUECSICagreement with Springer Nature.Consejería de Educación e Investigación (Comunidad de Madrid) is thanked for funding the 2016-T1/AMB-1434 project in the frame of ‘‘Ayudas de Atracción de Talento Investigador’’. Dr. Palacios also thanks CSIC for funding the PIE 202160I023 project. Prof. De la Torre thanks Junta de Andalucía for the P18-RT-720 research project (cofunded by ERDF).
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026