Qiuni investigates load-bearing capacities and mechanisms, and failure modes of composite structures using recycled aggregate concrete and proposes the respective mechanics-based and data-driven resistance models for structural design. The objective is to ensure the safety and optimise the design, of structural elements made from recycled material with a high variability. This work is funded by the highly prestigious Marie Skłodowska-Curie Actions (MSCA) Postdoctoral Fellowships (RECOMPOSE). So far, Qiuni has published 22 articles in peer-reviewed high-rank journals (h-index=13, according to Scopus), and serves as a reviewer of dozens of reputable journals.