Kei-ichi Imamoto is a Professor at Department of Architecture, Tokyo University of Science. His research interest includes conservation of RC buildings, reuse of industrial by-product to building materials, creep and shrinkage of Concrete. He belongs to Architectural Institute of Japan, Japan Concrete Institute, RILEM and ACI. He is a member of RILEM Technical Advisory Committee, Bureau and contributed as a deputy chair of RILEM TC 192-ECM, TC 255-FRS, TC 270-CIM and TC-DOC. Also, he contributed as a keynote speaker of RILEM Spring Convention at Rovinj (2019), 14th DBMC at Ghent (2017) and RILEM International workshop of TC 230-PSC at Zagreb (2014) and, so far, published more than 300 papers.