Contact
please contact me by e-mail: go.igarashi"(at)"concrete.t.u-tokyo.ac.jp
Area of interest
Hydration mechanism of cementitious materials
Thermodynamic modeling of cement concrete system
Moisture movement in porous media
Water vapor adsorption on the silanol groups
Education
2019.04-present Project Assistant Professor, Graduate School of Engineering, The University of Tokyo
2014.04-2019.3 Assistant Professor, Graduate School of Engineering, Tohoku University
2012.05-11 Academic guest, Swiss Federal Laboratories for Materials Science and Technology (EMPA)
2011.04-2014.03 Research Fellow of the Japan Society for the Promotion of Science (JSPS) DC1
2014.03 Graduated doctral program in engineering at Nagoya University (Doctor of Engineering)
2011.03 Graduated master program in engineering at the school of Environmental studies, Nagoya University (Master of Engineering)
2009.03 Graduated the department of engineering, Nagoya University (Bachelor of Engineering）
Membership
Japan Concrete Institute (JCI)，Architectural Institute of Japan (AIJ)，Japan Society of Civil Engineers (JSCE), Atomic Energy Society of Japan (AESJ)
Honors and Awards
| 2014 | 2014 The TOKAI Prize of Architectural Institute of Japan (AIJ) for Research Thesis（2014.2.11） --Relationship between water vapor BET specific surface area and chemically bound water of various Portland cement and blast furnace slag cement paste |
| 2013 | 2013 JCA(Japan Cement Association) Annual Convention: Best Presentation Prize（2013.7.31） --Suggestion for simple test method for drying shrinkage of aggregate based on loss on ignition |
| 2011 | 2011 JCI(Japan Concrete Institute) Annual Convention: Paper Encouragement Prize（2011.7.13） --Relationship between Young's modulus and phase composition of hardened cement paste under each relative humidity |
| 2010 | 2010 JCI(Japan Concrete Institute) Annual Convention: Paper Encouragement Prize（2010.7.9） --Development of the Poisson's ratio of the hardened cement paste in Early age |
| 2009 | 2009 AIJ(Architectural Institute of Japan): Bachelor's theses Encouragement（2009.7.29） --Effect of elevated temperature history on hydration and properties of hardened cement |
List of Publications
| Authors | Title | Information |
| Papers (peer review) in English | ||
| I. Maruyama, Y. Nishioka, G. Igarashi, K. Matsui | Microstructural and bulk property changes in hardened cement paste during the first drying process | Cement and Concrete Research，Vol.58, pp.20-34, 2014.04 |
| I. Maruyama, A. Teramoto, G. Igarashi | Strain and thermal expansion coefficients of various cement pastes during hydration at early ages | Materials and Structures，Vol.47, No.1-2, pp.27-37, 2014.01 |
| I. Maruyama, G. Igarashi | Hydration model of Portland cement for structural integrity analysis | Proceedings of 4th International Symposium on the Ageing Management & Maintenance of Nuclear Power Plants (ISaG2010), pp.123-144, 2011.3 |
| Papers (peer review) in Japanese | ||
| I. Maruyama, G. Igarashi, Y. Nishioka, Y. Tanigawa | Carbonation and fastening strength deterioration of calcium silicate board -Analysis of materials collected from a ceiling collapse accident- | Journal of Structural and Construction Engineering (Transactions of AIJ), Vol.78, No.689, pp.1203-1208, 2013.07 |
| I. Maruyama, Y. Nishioka, A. Sugie, G. Igarashi | Alteration of Sorption Properties of Hardened Cement Paste under Drying Process | Journal of the Society of Materials Science, Japan, Vol.62, No.3, pp.219-223, 2013.03 |
| G. Igarashi, A. Teramoto, I. Maruyama | Relationship between water vapor BET specific surface area and chemically bound water of various Portland cement and blast furnace slag cement paste | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.77, No.682, pp.1819-1828, 2012.12 |
| G. Igarashi, A. Sugie, I. Maruyama | Relationship between thermal conductivity and phase composition of hardened cement paste under hydration process | Japan Concrete Institute Annual Papers, Vol.34, No.1, pp.538-543, 2012.7 |
| Y. Nishioka, G. Igarashi, I. Maruyama | Prediction about carbonation of early-demolded concrete | Japan Concrete Institute Annual Papers, Vol.34, No.1, pp.658-663, 2012.07 |
| G. Igarashi, I. Maruyama | Relationship between specific surface area of C-S-H by vapor adsorption isotherm and silanol group on the surface of C-S-H | Cement Science and Concrete Technology (Transactions of JCA)，No.65, pp.140-145, 2012.3 |
| A. Teramoto, G. Igarashi, I. Maruyama | Study in the effect of aggregate volume fraction on dynamic elasticity in hardening process | Cement Science and Concrete Technology (Transactions of JCA), No.65, pp.132-139, 2012.03 |
| I. Maruyama, A. Teramoto, G. Igarashi | Discussion on "Mechanism of early heat curing influence on compressive strength and autogenous shrinkage of over 200MPa-class ultra high strength concrete" | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.77, No.673, pp.509-510, 2012.3 |
| I. Maruyama, G. Igarashi | Prediction of strength of concrete in long-lived concrete member | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.77, No.673, pp.323-332, 2012.3 |
| A. Teramoto, G. Igarashi, I. Maruyama | Early age volume changing of Portland cement paste under high temerature history | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.77, No.672, pp.153-160, 2012.2 |
| I. Maruyama, G. Igarashi, N. Kishi | Fundamental study on water transfer in Portland cement paste | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.76, No.668, pp.1737-1744, 2011.10 |
| G. Igarashi, N. Horiguchi, I. Maruyama | Relationship between Young's modulus and phase composition of hardened cement paste under each relative humidity | Japan Concrete Institute Annual Papers，Vol.33, No.1, pp. 365-370, 2011.7 |
| N. Horiguchi, G. Igarashi, I. Maruyama | Fundamental study on moisture content dependency of volume change of various coarse aggregate | Japan Concrete Institute Annual Papers，Vol.33, No.1, pp. 131-136, 2011.7 |
| I. Maruyama, G. Igarashi | Water vapor adsorption isotherm model of Portland cement paste | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.76, No.664, pp.1033-1041, 2011.6 |
| I. Maruyama, G. Igarashi | Hydration of Portland cement and surface area of hardened cement paste by water vapor adsorption measurement | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.75, No.663, pp.865-873, 2011.5 |
| G. Igarashi, I. Maruyama | Relationship between supecific surface area and hydration reaction of hardened cement paste | Cement Science and Concrete Technology (Transactions of JCA)，No.64, pp.103-110, 2011.3 |
| I. Maruyama, G. Igarashi | Mechanism of moisture sorption hysteresis of hardened cement paste | Cement Science and Concrete Technology (Transactions of JCA)，No.64, pp.96-102, 2011.3 |
| I. Maruyama, N. Kishi, G. Igarashi | Hydration pressure in hardened cement paste containing blust furnace slag | Cement Science and Concrete Technology (Transactions of JCA)，No.64, pp.89-95, 2011.3 |
| G. Igarashi, I. Maruyama | Relationships between mechanical properties and phase composition of hardened cement paste | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.76, No.660, pp.213-222, 2011.2 |
| N. Horiguchi, G. Igarashi, I. Maruyama | Young's modulus and poisson's ratio of hardened cement paste under differentrelative humidity | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.76, No.660, pp.231-236, 2011.2 |
| I. Maruyama, G. Igarashi, T. Matsushita, T. Noguchi, Y. Hosokawa, K. Yamada | Hydration of 3CaO・Al2O3 and 4CaO・Al2O3・Fe2O3 in Portland cement --Hydration system of Portland cement Part2-- | Journal of Structural and Construction Engineering (Transactions of AIJ)，Vol.76, No.659, pp.1-8, 2011.1 |
| I. Maruyama, N. Kishi, A. Teramoto, G. Igarashi | Relationship between shrinkage and mineral compositon of various Portland cement paste | Japan Concrete Institute Annual Papers，Vol.32, No.1, pp. 347-352, 2010.7 |
| G. Igarashi, I. Maruyama, A. Teramoto, N. Horiguchi | Development of the Poisson's ratio of the hardened cement paste in Early age | Japan Concrete Institute Annual Papers，Vol.32, No.1, pp. 281-286, 2010.7 |
| G. Igarashi, I. Maruyama, N. Takamatsu, K. Yamada | Effect of elevated temperature history on hydration and properties of hardened cement | Japan Concrete Institute Annual Papers，Vol.31, No.1, pp. 715-720, 2009.7 |
| N. Takamatsu, I. Maruyama, G. Igarashi, A. Teramoto | Volume change and hydration reaction of blast furnace slag cement with early temperature history | Japan Concrete Institute Annual Papers，Vol.31, No.1, pp. 187-192, 2009.7 |
| Presentations in the International Conference | ||
| I. Maruyama, Y. Nishioka, G. Igarashi | Microstructure and strength change of hardened cement paste under dyring process | Int. Conf. on Sustainable Construction Materials and Technologies, Kyoto, Japan, 18th-21st Aug., 2013, e358 |
| I. Maruyama, O. Kontani, S. Sawada, M. Takizawa, G. Igarashi, O. Sato | Evaluation of Irradiation Effects on Concrete Structure -Background and preparation of neutron irradiation test- | ASME 2013 Power Conference, Boston, Massachusetts, 98114, 2013.07.29-08.01 |
| I. Maruyama, G. Igarashi | Prediction of strength of concrete in long-lived concrete member | Int. Conf. Numerical Modeling Strategies for sustainable concrete structures, FP-279, Aix-en-Provence, France, 29.May-1st June, 2012 |
| G. Igarashi, N. Takamatsu, K. Yamada, I. Maruyama | The effect of elevated temperature history on properties and hydration of hardened cement paste | Proceedings of 4th International Conference on Construction Materials: Performance, Innovations, and Structural Implications (ConMat’09), Nagoya, Japan, pp.1135-1141,2009.8.24-26 |
| Presentations in the Domestic Conference | ||
| D. Hashimoto, I. Maruyama, G. Igarashi, H. Hamasaki, T. Aoki | Basic study on relationships between deterioration of bricks by salt crystallization and conditions of site | Proceedings of annual Meeting of the Tokai Branch of AIJ，Vol.52, pp.1-4，2014.2 |
| G. Igarashi, S. Sawada, I. Maruyama, M. Takizawa, O. Kontani, O, Sato | Properties change of concrete under irradiated condition -Part 4 Process of concrete mixture design for neutron-ray and gamma-ray irradiation test- | Summaries of Technical Papaers of Annual Meeting of AIJ，pp.1313-1314, 2013.9 |
| A. Sugie, G. Igarashi, I. Maruyama | Basic study on measurement method of hardening process of cement paste | Summaries of Technical Papaers of Annual Meeting of AIJ，pp.245-246, 2013.9 |
| Y. Nishioka, G. Igarashi, I. Maruyama | Experimental study on changes of pore structure of drying cement paste by low temperature DSC | Summaries of Technical Papaers of Annual Meeting of AIJ，pp.89-90, 2013.9 |
| I. Maruyama, M. Ito, Y. Nishioka, G. Igarashi | Evaluation technique of drying shrinkage behavior of hardened cement paste made with shrinkage reducing agent | Proceedings of annual Meeting of JCA, Vol.67，pp.182-183, 2013.5.13-15 |
| I. Maruyama, Y. Nishioka, G. Igarashi | Alteration of Properties of Hardened Cement Paste under Drying Process -V. from the point of view of mechanical properties- | Proceedings of annual Meeting of JCA, Vol.67，pp.234-235, 2013.5.13-15 |
| I. Maruyama, Y. Nishioka, G. Igarashi | Alteration of Properties of Hardened Cement Paste under Drying Process -IV. from the point of view of long and short term length change isotherm- | Proceedings of annual Meeting of JCA, Vol.67，pp.232-233, 2013.5.13-15 |
| I. Maruyama, G. Igarashi, K. Matsui, N. Sakamoto | Alteration of Properties of Hardened Cement Paste under Drying Process -III. from the point of view of SAXS- | Proceedings of annual Meeting of JCA, Vol.67，pp.178-179, 2013.5.13-15 |
| I. Maruyama, G. Igarashi, K. Matsui, M. Nayuki | Alteration of Properties of Hardened Cement Paste under Drying Process -II. from the point of view of NMR- | Proceedings of annual Meeting of JCA, Vol.67，pp.176-177, 2013.5.13-15 |
| I. Maruyama, Y. Nishioka, G. Igarashi | Alteration of Properties of Hardened Cement Paste under Drying Process -I. from the point of view of nitrogen and vapor adsorption isotherm- | Proceedings of annual Meeting of JCA, Vol.67，pp.174-175, 2013.5.13-15 |
| G. Igarashi, Y. Nishioka, I. Maruyama, H. Yoshida | Suggestion for simple test method for drying shrinkage of aggregate based on loss on ignition | Proceedings of annual Meeting of JCA, Vol.67，pp.346-347, 2013.5.13-15 |
| B. Jeon, G. Igarashi, I. Maruyama | Analysis of degree of hydration ultra high strength class cement paste by quantitative Rietveld method | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.51, pp.37-40, 2012.3.5 |
| A. Sugie, G. Igarashi, I. Maruyama | Basic study on measurement method of hardening process of cement paste from fluent phase to solid phase | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.51, pp.41-44, 2012.3.5 |
| I. Maruyama, G. Igarashi, Y. Nishioka, T. Sugiyama | Basic study on test method for drying shrinkage of sandstone aggregate | Proceedings of annual Meeting of JCA, Vol.66，pp.268-269, 2012.5.29-31 |
| G. Igarashi, I. Maruyama | Relationship between thermal conductivity and phase composition of hardened cement paste | Proceedings of annual Meeting of the Tokai Branch of JSMS, Vol.6, pp.77-78, 2012.3.5 |
| H. Sasano, A. Teramoto, G. Igarashi, I. Maruyama, M. Tanimura, Y. Mitani | Evaluation of autogenous shrinkage process of ultra high strength cement paste based on the hydration pressure theory | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.50, pp.93-96, 2012.2.19 |
| Y. Nishioka, G. Igarashi, I. Maruyama | Modeling of concrete carbonation based on water transfer and process of carbonation | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.50, pp.85-88, 2012.2.19 |
| G. Igarashi, I. Maruyama | Temperature dependency of virgin isothermal desorption and BET surface area of hardened cement paste | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.50, pp.81-84, 2012.2.19 |
| G. Igarashi, A. Teramoto, I. Maruyama | Development of statistical thickness of adsorbed vapor layer of various hardened cement paste | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.50, pp.77-80, 2012.2.19 |
| G. Igarashi, I. Maruyama | Specific surface area of calcium silicate hydrate based on vapor adsorption isotherm | Proceedings of annual Meeting of JSCE, Vol.66, pp.991-992, 2011.9 |
| G. Igarashi, I. Maruyama | Effect of temperature on the number of silanol group in calcium silicate hydrate based on thermodynamic model | Summaries of Technical Papaers of Annual Meeting of AIJ, pp.623-624, 2011.8 |
| G. Igarashi, I. Maruyama | Relationships between specific surface area and the degree of hydration of various hardened cement paste | Proceedings of annual Meeting of JCA, Vol.65, pp.20-21, 2011.5 |
| G. Igarashi, I. Maruyama | Modelling of water adsorption of calcium silicate hydrate | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.49, pp.73-76, 2011.2.19 |
| G. Igarashi, N. Horiguchi, I. Maruyama | Relationship between Young's modulus and phase composition of hardened cement paste under each relative humidity | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.49, pp.77-80, 2011.2.19 |
| N. Horiguchi, G. Igarashi, I. Maruyama | Volume change of aggregate under each relative humidity | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.49, pp.61-64, 2011.2.19 |
| G. Igarashi, I. Maruyama | Physical properties and hydration process in hardened cement paste with different curing temperature | Summaries of Technical Papaers of Annual Meeting of AIJ，pp. 1327-1328，2010.9.11 |
| I. Maruyama, H. Hayano, A. Teramoto, G. Igarashi | Control of volume change rate of concrete by porous aggregate and alkali solution | Summaries of Technical Papaers of Annual Meeting of AIJ，pp. 909-910，2010.9.9 |
| I. Maruyama, G. Igarashi, T. Taniguchi | Infrared spectra of C-S-H under each drying condition | Proceedings of annual Meeting of JCA, Vol.64, pp.132-133, 2010.5.25 |
| G. Igarashi, N. Horiguchi, I. Maruyama | Relative humidity dependence of bulk modulus hardened cement paste | Proceedings of annual Meeting of JCA, Vol.64, pp.126-127, 2010.5.25 |
| I. Maruyama, N. Kishi, G. Igarashi | Disjoining pressure in hardened cement paste containing blust furnace slag | Proceedings of JSCE333 comitee symposium on physical properties change and performance evaluation of concrete containing admixture, No.2，pp. 385-392, 2010.5.24 |
| N. Horiguchi, G. Igarashi, I. Maruyama | Moisture content dependence of Young's modulus and Poisson's ratio of hardened cement paste | Proceedings of annual Meeting of the Tokai Branch of JSMS，Vol.4, pp.45-46, 2010.3.5 |
| G. Igarashi, I. Maruyama | Relationship between Hydration and Mechanical Properties of Hardened Cement Paste in Early Age | Proceedings of annual Meeting of the Tokai Branch of JSMS，Vol.4, pp.41-42, 2010.3.5 |
| G. Igarashi, A. Teramoto, I. Maruyama, N. Horiguchi | Time Dependence of Poisson's ratio of Cement Paste in Very Early Age | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.48, pp. 61-64, 2010.2.20 |
| G. Igarashi, A. Teramoto, I. Maruyama, N. Horiguchi | The Measuring Method of Poisson's ratio of Cement Paste in Very Early Age | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.48, pp. 57-60, 2010.2.20 |
| A. Teramoto, I. Maruyama, G. Igarashi | Effect of aggregate volume and aggregate size on autogenous shrinkage in ultra high-strength concrete | Proceedings of annual Meeting of the Tokai Branch of AIJ, Vol.48, pp. 37-40, 2010.2.20 |
| G. Igarashi, I. Maruyama, T. Matsushita, T. Noguchi | The effect of curing temperature on hydration of aluminate in various hardened cement paste | Summaries of Technical Papaers of Annual Meeting of AIJ，pp. 787-788, 2009.8.26 |
| N. Takamatsu, G. Igarashi, I. Maruyama | Hydration reaction of blast furnace slag cement with early temperature history | Summaries of Technical Papaers of Annual Meeting of AIJ，pp. 519-520, 2009.8.26 |
| N. Kishi, G. Igarashi, I. Maruyama | Experimental investigation for moisture transport of hardened cement paste | Summaries of Technical Papaers of Annual Meeting of AIJ，pp. 248-249, 2009.8.26 |