Ippei Maruyama is a Professor of Graduate School of Environmental Studies at the Nagoya University and a Professor of Graduate School of Engineering at the University of Tokyo (cross-appointment), Japan.

He is a materials scientist and concrete engineer whose main research interests concern advancing understanding of the relation between microstructure, chemistry and properties of cementitious materials and performance of concrete structures. He is currently a lead researcher of several notional projects, namely,

1) Soundness evaluation of concrete subjected to irradiation,

2) Enhancement of soundness evaluation procedures of concrete structures in NPP using data of harvested materials from decommissioning plants,

3) Evaluation of concrete contamination of radio-active materials in Fukushima-daiichi plants, and

4) Impacts of drying on cement based materials from atomic scale to structural scale. He is an editor in chief of the Journal of Advanced Concrete Technology, which is published by Japan Concrete Institute.