Mechanisms of hydration and the design of low-carbon cement systems incorporating calcined low-grade clays and recycled concrete

This dissertation will focus on the investigation of early hydration mechanisms and strength development in low-carbon cement systems incorporating calcined low-grade clays, limestone, and recycled concrete. The primary objective is to evaluate how chemical composition, raw material reactivity, sulfate balance, and processing parameters affect the performance of these complex binder systems, particularly at early ages. Attention will also be devoted to the potential use of recycled concrete not only as an aggregate, but, following appropriate activation, also as a partially active binder.

The research will involve the experimental preparation of reference mixtures, the monitoring of hydration processes and microstructural changes using advanced analytical techniques, and the evaluation of relationships between composition, structure, and resulting properties. The anticipated outcomes include new insights into the behavior of these materials and the establishment of design principles for developing more sustainable cement-based composites with potential applications in both research and construction practice. The topic builds on current research on low-carbon binders and offers opportunities to participate in national and international research projects and to collaborate with foreign research institutions.