Yoonjung Han joined the group in January 2020 and received her PhD in May 2025. Her work has been focused primarily on fundamental experimental characterization of pozzolanic reactions in cementitious binders. Before coming to Texas A&M, Yoonjung worked in a research center for two years, where she investigated lightweight concrete in addition to continuing her investigations of fiber-reinforced concrete and light-transmitting concrete that were the subject of her M.S. research at Seoul National University of Science and Technology. Yoonjung plans to accept a postdoctoral research associateship with Professor Shiho Kawashima at Columbia University in Fall 2025.