Tokyo Tech News

Professor Emeritus Kyoji Tanaka Receives 2022 Architectural Institute of Japan Grand Prize


Published: June 6, 2022

Professor Emeritus Kyoji Tanaka has been awarded the 2022 Architectural Institute of Japan Grand Prize. The award was presented to Professor Emeritus Tanaka for his "Systematization of building waterproofing technology that contributes to the longevity of buildings and social contributions to research, education, and industrial fields related to building waterproofing." Founded in 1886, the Architectural Institute of Japan (AIJ) is an academic organization dedicated to the advancement and development of the science, technology, and art of architecture. It plays a major role in the Japanese architectural community and currently has about 35,000 members. The AIJ Grand Prize is awarded to individual members who have made particularly significant contributions to the development and improvement of architecture-related science, technology, and art through their achievements over many years (in principle, three awards are presented each year).

Comment from Professor Emeritus Kyoji Tanaka

Professor Emeritus Kyoji Tanaka
Professor Emeritus Kyoji Tanaka

Much of what this was awarded for was due to the support and cooperation of professors, colleagues, students, and others at Tokyo Tech. You are the reason for this award, and I am truly grateful. I was born in Sapporo and studied architecture in Hokkaido University. However, my research supervisor Dr. Michio Koike had transferred to Tokyo Tech, and because of this, I came to work at Tokyo Tech's Research Laboratory of Engineering Materials (later Materials and Structures Laboratory and Structural Engineering Research Center) as his assistant in 1971, immediately after finishing my master's degree program. Construction at the time was filled with well-known professors working at their prime, those I had known only from books, magazines, and the like—Dr. Makoto Yoshioka, Dr. Kazuo Goto, Dr. Toyokazu Shiire, Dr. Kiyoshi Seike, Dr. Kazuo Shinohara, Dr. Morihisa Fujimoto, Dr. Hiromi Kobayashi, and others—and I felt timid. The department was friendly, however, and the professors would approach me unassumingly and were quick to welcome me to the Construction Group. This continued until my retirement in 2011.

I think Tokyo Tech is liberal, and I think that is good for the Institute. It was strict about what I was researching and in the assessment against the standard, but there were no authoritarian constraints, and I was able to work on my research unhindered. What I found the most wonderful at Tokyo Tech was that I was always surrounded by my seniors, colleagues, and my juniors at a high level who would engage with me in debate about my research. It was the best environment for polishing the quality of my research. This is an asset that cannot be measured in monetary value, and I still believe that Tokyo Tech is a wonderful institute.

Research topic and achievements

Systematization of waterproofing technology for long-life building, and social contribution to research, education, and industry in waterproofing field.

Contribution to building longevity with building waterproofing
The development of cross-sectional study of building waterproofing with fields of building materials and construction methods
International contribution with Japanese building waterproofing
Contribution to research, education, and application fields of building waterproofing


Department of Architecture and Building Engineering,
School of Environment and Society

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