Ippei Maruyama

Dr. Ippei Maruyama is a professor of Graduate School of Environmental Studies at Nagoya University and a professor of The University of Tokyo. He is also a concurrent research of Disaster Mitigation Research Center of Nagoya Univ.

He earned his B.Eng. in 1998, M.Eng. in 2000 and Dr.Eng. in 2003 from The University of Tokyo. Before he joined Nagoya University, he was visiting researcher at Delft University of Technology and assistant professor at Hiroshima University. His current research topics include architectural engineering, building material engineering, design of concrete structures, cement chemistry and concrete engineering, aging management of concrete structures, preservation of historical buildings and civil structures, radiation physics and chemistry for concrete, cement chemistry, applied geochemistry (mainly calcite and ferrite concretion phenomena, and geo-material applications). He has received several awards from Japanese government, Architectural Institute of Japan (AIJ), Japan Cement Association (CAJ), and Japan Concrete Institute (JCI). He is a recipient of Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (The Young Scientists’ Prize) in 2013.

He is a technical lead of a national project of “Evaluation of soundness of concrete subjected to irradiation (2016-present)” founded by Agency of Natural Resources and Energy, Japan. This project is after the project ”Development of soundness evaluation methods for irradiated concrete members” funded by Nuclear Regulatory Authority, Japan (2008-2016). So far, he has elucidated a mechanism of concrete performance change under long-term drying, heating, gamma-ray and/or neutron irradiation conditions. Because this problem is common to the countries operating nuclear power plants more than 40 years and the huge cost is required for the irradiation experiments, international collaboration network, named as “International Committee on Irradiated Concrete” has been launched among 7 countries including Japan, USA and Spain, and he was selected as a chair (2014-2016).

He is also contributing to the problems with the aftermath of the 2011 Tōhoku earthquake and tsunami. He has proposed a part of specification and design of concrete and concrete structure of an isolated repository for garbage containing radioactive substances under a national project. In addition, for people in region near Fukushima daiich nuclear power plant, shielding performance of building and mobility of Cs-ion in concrete and other building material have been analyzed and published. Currently he is technical lead of a project named “Estimation of contamination distribution in concrete members of Fukushima Daiichi NPS buildings based on mechanism-understanding of radioactive nuclides contamination of cement-based materials” funded by Ministry of Education, Culture, Sports, Science and Technology.