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Professor Emeritus
Nagaoka University of Technology


Maruyama, Kyuichi is now a Professor Emeritus at Nagaoka University of Technology. His specialty is concrete engineering. The seismic design of concrete structures is his major field. He has been one of the most active members in the professional affiliation, such as Japan Society of Civil Engineers (JSCE, more than 35,000 enrollment), Japan Concrete Institute (JCI, about 8,000 enrollment). In particular, from 2010 to 2012 he served as a member of the executive directors of JSCE and has greatly contributed to the examination and recovery works concerning with the damage due to 2011 East Japan Earthquake.

From 2003 to 2007 he served as the chairperson of concrete committee of JSCE and contributed to solve many critical issues in the field. One of the big issues he involved was cracking of a newly constructed PRC bridge in 2005. He set up a special committee in JSCE and investigated the cause of so many cracks happened in concrete. It was firstly found that concrete could get shrunk at more than 0.001 with certain type of aggregates. The fact was immediately introduced in both JSCE and AIJ code provisions.

In JCI he served as a vice president from 2011 to 2013. In his career he served as an executive director twice, from 2000 to 2002 and from 2005 to 2007. In the first period he led research activities of JCI as a chairperson of the committee of research activities. His contribution has become wide to the international affairs of JCI, and served as a chairperson of the committee of international affairs in the second period of executive director. In 2013 he has set up a new committee to promote JCI-ACI collaboration and organized the first ACI-JCI joint seminar in Hawaii in July, 2014. He is now JCI president for two year term since June 2016

His leadership in JSCE and JCI resulted in publication of guidelines for design and construction of new materials, such as “Technical Report on Continuous Fiber Reinforced Concrete, JCI in 1998” and “Recommendations for Upgrading of Concrete Structures with Use of Continuous Fiber Sheets, JSCE in 2002.” Information from these publications has contributed to ISO provisions of FRP.

His professional activities have been acknowledged in the governmental and regional offices. He has been chairing the committee on repair and rehabilitation of concrete bridges damaged by salt attack set by the Ministry of Land, Infrastructure, Transport and Tourism. His contribution is not only to make up the guidelines but also to examine actual structures and to propose effective counter measures.

His working area is not limited to his professional field. He has been a professor at Nagaoka University of Technology for more than 35 years, and served as the executive director and vice president of university in 2003-2009. Based on his such background, he has contributed to the government, such as the Ministry of Education, Culture, Sport, Science and Technology, the Ministry of Economy, Trade and Industry as well as the Ministry of Land, Infrastructure, Transport and Tourism.

Research Interest

His Research interests include: Reinforced Concrete Structures, Earthquake Engineering, Civil Engineering Structures