Krishnan, SreejithZunino, FrancoBishnoi, ShashankScrivener, Karen2023-06-052023-06-052023-06-052023-03-0210.1016/j.cemconres.2023.107119https://infoscience.epfl.ch/handle/20.500.14299/198039WOS:000991758900001In this study, a protocol for synthesising beta-C2S using K2SO4 as a dopant has been reported. Quantitative X-Ray diffraction was used to characterise synthesised samples. It was observed that it is possible to synthesise beta-C2S with high purity (>96 wt%) and limit the formation of free lime to below 0.5 wt% using this protocol. Unreactive gamma-C2S was the main secondary phase present in the sintered samples. Isothermal calorimetry studies were conducted to understand the reaction kinetics which showed that beta-C2S reacts slowly but produces similar calorimetric curve profiles as that of C3S. The C-S-H formed from the hydration of C2S was observed to be morphologically and compositionally identical to the C-S-H produced from the hydration of C3S. The hydration kinetics of beta-C2S was seen to be affected by the presence of aluminosilicate pozzolan, such as calcined clay, which can have practical implications while producing blended cements with belitic clinkers.Construction & Building TechnologyMaterials Science, MultidisciplinaryMaterials Sciencebelitealuminaclinkerc -s -hcalorimetryc-s-hdicalcium silicatebelite cementsalitedissolutionmodeltext::journal::journal article::research article