Dr. Ippei Maruyama is a professor at the University of Tokyo. He is a visiting professor of the Museum at Nagoya University and of the Research Center for Green X-tech at Tohoku University. He earned his B.Eng. in 1998, M.Eng. in 2000, and Dr.Eng. in 2003 from the University of Tokyo. Before he joined the University of Tokyo, he was an assistant professor at Hiroshima University (2003-2005), associate professor (2005-2016), and professor (2016-2022) at Nagoya University. He is the chair of the International Committee on Irradiated Concrete, the editor-in-chief of the Journal of Advanced Concrete Technology, and an associate editor of Materials and Structures. He is leading or contributing to several national projects relating to the aging management of concrete structures in nuclear power plants, the Fukushima Daiichi decommissioning process, calcium carbonate circulation system for construction, and the standardization of quantification methods for mineralized CO2 using cementitious materials.