RT Conference Proceedings
T1 Activation of LC3 low-carbon cements by C-S-H seeding.
A1 Morales-Cantero, Alejandro
A1 Gómez-de-la-Torre, María de los  Ángeles
A1 Cuesta-García, Ana María
A1 Santacruz-Cruz, María Isabel
A1 Mazanec, Oliver
A1 Dalla-Libera, Alessandro
A1 Dhers, Sebastien
A1 Schwesig, Peter
A1 Borralleras, Pere
A1 García-Aranda, Miguel Ángel
K1 Cemento Portland
K1 Arcilla
AB Portland-based Limestone Calcined Clay Cements (LC3) are attracting a lot of the attention from scholarsand field applications due to the reduction in CO2 emissions. However, their low mechanical strengths atearly ages are a key bottleneck for their widespread use. Calcined clays can also lead to a strong reductionof the fluidity in the first hours after mixing, which is an important second drawback. Here, these two issueshave been addressed. Three LC3 binders were prepared based on a PC-52.5R cement and three calcinedclays, with variable amounts of kaolinite in the raw materials ranging 29-74 wt%. The particle sizes of thecalcined clays were adjusted by milling to Dv,50=13±2 μm. The results show that the loss of fluidity of LC3mortars during the first hours can be solved by a recently developed PCE-based superplasticizer,specifically tailored for this application. Moreover, the compressive strengths at 1 day for LC3 mortars havebeen boosted by a C-S-H nucleation seeding admixture and the gains are maintained at 28 days. It is notedthat the compressive strengths at 1 day and room temperature were increased by 45-100 %, when comparedto the corresponding unseeded mortars.
YR 2023
FD 2023
LK https://hdl.handle.net/10630/27736
UL https://hdl.handle.net/10630/27736
LA spa
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026