Publications by authors named "Bastian Strybny"
Calcined clays (CCs) as supplementary cementitious materials (SCMs) can be a promising option to reduce clinker content and CO emissions in eco-friendly concretes. Although CCs as components of composite cements in combination with Ordinary Portland Cement (OPC) and limestone powder (LSP) have attracted industry interest, their use as concrete additives is limited. This study investigates the effects of the addition of CCs on the fresh and hardened properties of industry-standard ready-mixed concretes.
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- The study explores how the size of binder particles and the use of chemical additives affect the early strength and stiffness of eco-friendly mortars made with low clinker content and mixed cements that include high amounts of slag and limestone.
- By adjusting the particle size of the slag and using nano-granular C-S-H seeds, researchers found notable improvements in compressive strength—up to 162% in the first 24 hours—and rapid hydration effects within just 6 hours of mixing.
- The findings suggest that optimizing particle size and increasing C-S-H admixture levels enhance early mortar strength, allowing for a reduced use of clinker while still achieving a strong binder performance.