RT Conference Proceedings
T1 Processing and hydration activation of limestone calcined clay belite rich cements.
A1 Redondo-Soto, Cinthya
A1 Fernández-Pérez, Noelia
A1 Cuesta-García, Ana María
A1 Santacruz-Cruz, María Isabel
A1 Gastaldi, Daniela
A1 Canonico, Fulvio
A1 García-Aranda, Miguel Ángel
K1 Cemento - Resistencia química
AB Belite-rich limestone calcined clay cements, BR-LC3, could be an alternative for low carbon binders with potentially very good durability properties, given the high amount of C-S-H gel from the cement hydration with additional C-(A)-S-H from the pozzolanic reaction. Nevertheless, BR-LC3 phase hydration rates at early ages are slow and they must be enhanced, for instance by using C-S-H nucleation seeding admixtures. In this work, a BR-LC3 binder was prepared using a clinker-activated Belite-rich cement, BC (58 wt%), kaolinitic calcined clay (26 wt%), limestone (13 wt%) and gypsum (3 wt%). Pastes were prepared with a water-to-binder (w/b) ratio of 0.40 and superplasticizer. Mortars were prepared with the w/b=0.40 and having a target slump self-flow of 210±20 mm. Paste hydration characterization was carried out by thermal analysis, Rietveld quantitative phase analysis and mercury intrusion porosimetry. The compressive strengths of the mortars were also determined. Remarkable compressive strength improvements at 7 and 28 days are shown by using a C-S-H seeding admixture. The improvement of mechanical strengths is not related to belite phase hydration acceleration but mainly to lower porosity.
YR 2023
FD 2023
LK https://hdl.handle.net/10630/27699
UL https://hdl.handle.net/10630/27699
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 22 ene 2026