Assoc. Prof.

Arcitectural Structure and Construction System
Graduate School of Environmental Studies
Nagoya University

Speciality

Cement chemistry, Concrete engineering, Structural engineering, Applied geochemistry

Biographical sketch

Ippei Maruyama is an Associate Professor in Graduate School of Environmental Studies at Nagoya University in Nagoya, Japan. He is also concurrent researcher of Gensai center.

He received his Dr. of Eng. in structural engineering from The University of Tokyo in March 2003. His Doctoral thesis was ”Time dependent property of cement based materials on the basis of micro-mechanics”. He was a visiting researcher at the TU Delft in the Netherlands in 2000-2001, and Research Associate at Hiroshima University in 2003-2005. He is currently a member of Architectural Institute of Japan (AIJ), Japan Society of Civil Engineers (JSCE), American Concrete Institute (ACI), RILEM and Japan Concrete Institute (JCI), Atomic Energy Society of Japan (AESJ). He is an associate editor of Materials and Structures and Journal of Advanced Concrete Technology. He is a Chair of International Committee on Irradiated Concrete (ICIC).

Honors and Awards

2013 The Young Scientists’ Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (Govenment of Japan)
-- Volume change mechanism of cement-based materials.
2012 The Prize of AIJ (Architectual institute of Japan) 2012, Research Theses Division
-- Water-related reaction, transfer, and volume change in concrete.
2010 JCA (Japan Cement Association) : The best paper award
-- Deformation of cement paste in early age
(with Mr. A. Teramoto)
2010 JCA (Japan Cement Assocation) : The best presentation award
-- IR-adsorption of C-S-H under drying process
2010 Best paper in the category of Scientific Value at Sixth International Conference Concrete under Severe Conditions
-- Quantification of water penetration into concrete through cracks to rebars by neutron radiography.
(with Assoc. Prof. M. Kanematsu, Ms. N. Tsuchiya, Assoc. Prof. T. Noguchi)
2009 JCA (Japan Cement Association) : The best paper award
-- Visualization and anaysis of water behavior around cracking of concrete by Neutron Radiography.
2009 JCI Annual Convention: Paper Encouragement Prize
-- Evaluation of crack width in massive reinforced concrete structures.
2007 AIJ (Architectural Institute of Japan): Encouragement Prize
-- Hydration Model of Portland Cement.
2006 ACF: "Best Concrete Technology" Award
-- Study on the Application of Low-quality Recycled Coarse Aggregate to Concrete Structure by Surface Modification Treatment.
(M.Tsujino, Assoc. Prof. T. Noguchi, M. Tamura, M. Kanematsu, I. Maruyama, H. Nagai)

2006 JCI (Japan Concrete Institute): Award for promising researcher
-- Modeling of early age concrete based on a hydration model.
2005 Yamada prize, The Maeda Engineering Foundation
-- Time depnedent property of cement based materials on the basis of micro-mechanics.
2003 JCI Annual Convention: Paper Encouragement Prize

Recent representative publications

Recent project

Leading projects:
2015 - Present "Performance evaluation of RPV-pedestal of Fukushima-daiichi NPP"
2015 - Present "Durability mechanics of concrete structure based on nano-atomic scale alteration of C-S-H", Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2014 - Present “Control of alternation of colloidal C-S-H under drying process by nano-particles”, Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2012 - Present “Numerical simulation of long-term concrete performance in massive concrete members”, Kajima corporation.
2011 - Present “Performance evaluation of reinforced concrete member subjected to long-term neutrons and gamma-rays irradiation”, Nuclear Regulation Authority, Japan. 
2012 - Present “Prediction of drying shrinkage of concrete”, Mitsubishi Material Corporation.
2013 “Movement of radioactive ingredient in building skin and evaluation of gamma-rays shielding performance of building materials”, Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2011 - 2012 “Evaluation of long-term concrete performance”, Kajima corporation.
2009 - 2011 “Systematically evaluation of hydration, hardening, and volume change of cement paste”, Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2009 - 2011 “Development of new exterior material from clay”, collaboration research with Ishikawa-toki Corp.
2009 - 2010 “Development of design method for high-durable reinforced concrete column used by ultra high-strength concrete”, collaboration research with Taiheiyo Cement Corp. and ANDO Corp., Grant-in-Aid for Development of Leading Technology related to Housings and Buildings, Ministry of Land, Infrastructure, Transport and Tourism.
2009 - 2010 “Mechanism of high cracking risk of blast furnace slag cement”, Japan Cement Association0.
2008 - 2010 “Evaluation of concrete soundness by using numerical model”, Projects on Enhancement of Ageing Management and Maintenance of Nuclear Power Stations, Nuclear and Industrial Safety Agency Japan.
2007 - 2008 “Evaluation of time-dependent performance of ultra high-strength concrete by using hydration model”, Japan Cement Association.
2007 - 2008 “Performance prediction of ultra high-strength concrete by using a numerical model”, collaboration research with Taiheiyo Cement Corp, Grant-in-Aid for Development of Leading Technology related to Housings and Buildings, Ministry of Land, Infrastructure, Transport and Tourism.
2006 - 2008 “Structural performance of full-scale reinforced ultra high-strength concrete members”, KAKEN, JSPS.
2006 - 2007 “Development of rapid hardening high-strength repair material”, Tokai industrial research promotion association.
2005 - 2006 “Reduction of autogenous shrinkage of high strength concrete by using saturated recycled aggregate”, Chugoku Construction Assosiation.
2004 - 2005 “Evaluation of soundness of high-strength concrete under restraint condition”, KAKEN, JSPS.
2004 “Effect of aggregate interface in recycled concrete aggregate on chloride diffusion”, Japan Cement Association.
2002 “Mechanism of shrinkage-induced crack reduction due to relaxation/creep behavior of hardened cement paste, Japan Cement Association.
Collaborative projects:
2015 - present "Application of calcite concretion to the engineering field", Leader Prof. Hidekazu Yoshida (Nagoya University), Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2015 - present "Formation of Iron-shell concretion", Leader Prof. Hidekazu Yoshida (Nagoya University), Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2014-present “Natural analog study on CaCO3 concretion in nature for self-healing process of crack in bedrock”, Leader Prof. Hidekazu Yoshida (Nagoya University), Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2010-2013 “Research and investigation on repair, reinforcement, and preservation of cultural architectures damaged by terremoto dell'Aquila.”, Leader Prof. Takayoshi Aoki (Nagoya city University), Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2011-2013 “Durability mechanics on shrinkage effect of reinforced concrete beam.” Leader Prof. Ryoichi Sato (Hiroshima University), Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2009-2011 “Durability mechanics on reinforced concrete member with large shrinkage concrete.” Leader Prof. Ryoichi Sato (Hiroshima University), Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).
2003-2004 “Development of recycling technology of scrapping reinforced concrete members.” Leader Assoc. Prof. Takafumi Noguchi (The University of Tokyo), Grants-in-Aid for Scientific Research, Ministry of the Environment.
2004-2006 “Development of expansive high-strength concrete and systematization of structural response.” Leader Prof. Ryoichi Sato (Hiroshima University), Grants-in-Aid for Scientific Research (KAKEN), Japan Society for the Promotion of Science (JSPS).

Research Interests

Long time peformace evaluation of massive concrete for plant lifecycle management of nuclear power plant
KEY WORDS: Strength, Young's modulus, drying effect, heeting effect, C-S-H properties, thermodynamic analysis

Development of non-shrinkage concrete
KEY WORDS: Mechanism of shrinkage, and its control. Disjoining pressure concept is re-interpreted.

Modeling from cement hydration to detrioration of reinforced concrete and fracture of reinforced concrete structure
KEY WORDS: modeling of hydration of cement and other mineral admixtures, shrinkage behavior, creep behavior, bond behevior around reinforcing bar, cracking behavior, coupled heat and moisture transport, ion tranportation, chemical reaction with carbonic anhydride, cloride ion, acid and so on.

Ultra High-Strength Concrete: Autogenous under temperature history, structral effect of Autogenous shrinkage
KEY WORDS: This topic includes: developement of material for ultra high-sterength concrete and mixture propoertion, controlling autogenous shrinkage and heat of cement hydration, RC design considering concrete volume change and defect at initial stage due to volume change, modeling of RC structure with high-strength concrete.

Concrete aggregate problems
KEY WORDS: Whethering of rocks, clay minerals, silicate minerals, alkali-aggregate reactions, volume change of aggregate

New structural materials for Marine Plants
KEY WORDS: salt, ultra-violet, cyclic loading, fatigue analysis

Concrete with low environmental load: Recycled aggregate, By-product
KEY WORDS: properties of recycled aggregate, properties of concrete for recycling material, durability of concrete with recycled aggregate, and behavior of reinforced concrete structure with recycled aggregate, properties of concrete using by-product

Contact

please contact me by e-mail: ippei atmark dali.nuac.nagoya-u.ac.jp

For prospective students

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