Oualit, MehenaSarri, Arezki2024-10-202024-10-2020240167-577Xhttps://www.sciencedirect.com/science/article/abs/pii/S0167577X24011959?via%3Dihubhttps://doi.org/10.1016/j.matlet.2024.137056https://dspace.univ-boumerdes.dz/handle/123456789/14439This paper investigates the use of solid alkaline carbonates (Na2CO3 and K2CO3) as activators for the production of one-part hybrid cement from a combination of three precursors: blast furnace slag, metakaolin, and clinker. The impact of activator dosage and the nature of the alkaline cation (Na+ or K+) on the compressive strength (Cs) and microstructure of the elaborated materials was studied. The results indicate that the highest Cs values are achieved with 5 % Na2CO3. The analysis of the reaction products’ microstructure reveals that the inclusion of Na2CO3 mainly produces (N,C)-A-S-H and C-A-S-H cementitious gels, along with metastable carboaluminates and different types of calcium carbonate. Additionally, the presence of K2CO3 results in the creation of hemicarboaluminate.enAlkaline activationCeramicsHybrid cementMetakaolinMicrostructureSlagArticle