KENICHIRO NAKARAI

Last Updated :2017/11/01

Affiliations, Positions
Graduate School of Engineering, Associate Professor
E-mail
nakaraihiroshima-u.ac.jp

Basic Information

Major Professional Backgrounds

  • 2002/10/16, 2006/08/15, The University of Tokyo, Research Associate
  • 2006/08/16, 2007/03/31, Gunma University, Faculty of Engineering, Lecturer
  • 2007/04/01, 2008/10/31, Gunma University, Graduate School of Engineering , Lecturer
  • 2008/11/01, 2012/03/31, Gunma University, Graduate School of Engineering , Associate Professor
  • 2012/04/01, Hiroshima University, Institute of Engineering, Associate Professor

Educational Backgrounds

  • The University of Tokyo, Japan, 2000/04, 2002/03
  • The University of Tokyo, Japan, 1998/04, 2000/03
  • The University of Tokyo, Japan, 1996/04, 1998/03

Academic Degrees

  • Doctor of Engineering, The University of Tokyo
  • Master of Engineering, The University of Tokyo

Research Fields

  • Engineering;Civil engineering;Structural engineering / Earthquake engineering / Maintenance management engineering

Research Keywords

  • Concrete Engineering
  • Durability
  • Concrete structures
  • Cement treated soils
  • Nuclear waste management

Educational Activity

Course in Charge

  1. 2017, Undergraduate Education, First Semester, Strength of Materials
  2. 2017, Undergraduate Education, First Semester, Reinforced Concrete Mechanics and Exercises
  3. 2017, Undergraduate Education, Second Semester, Bridge and Earthquake-resistance
  4. 2017, Undergraduate Education, First Semester, Experiments in Civil and Environmental Engineering
  5. 2017, Graduate Education (Master's Program) , First Semester, Advanced Structural Concrete
  6. 2017, Graduate Education (Master's Program) , First Semester, Advanced Structural Concrete
  7. 2017, Graduate Education (Master's Program) , Year, Civil and Environmental Engineering Research I
  8. 2017, Graduate Education (Master's Program) , Academic Year, Civil and Environmental Engineering Research I
  9. 2017, Graduate Education (Master's Program) , Year, Civil and Environmental Engineering Research II
  10. 2017, Graduate Education (Master's Program) , Academic Year, Civil and Environmental Engineering Research II
  11. 2017, Graduate Education (Doctoral Program) , Year, Civil and Environmental Engineering Research III
  12. 2017, Graduate Education (Doctoral Program) , Year, Civil and Environmental Engineering Research V
  13. 2017, Graduate Education (Doctoral Program) , Academic Year, Civil and Environmental Engineering Research V
  14. 2017, Graduate Education (Master's Program) , Year, Civil and Environmental Engineering Seminar II
  15. 2017, Graduate Education (Master's Program) , Academic Year, Civil and Environmental Engineering Seminar I
  16. 2017, Graduate Education (Master's Program) , Year, Civil and Environmental Engineering Seminar II
  17. 2017, Graduate Education (Master's Program) , Academic Year, Civil and Environmental Engineering Seminar II

Research Activities

Academic Papers

  1. Direct tensile strength of blast furnace slag mortar, Proceedings of the Japan Concrete Institute, 22(2), 505-510, 2000,6
  2. Natural frequency of pre-loaded and pre-stressed reinforce soil pier, Geosynthetics Engineering Journal, 15, 302-311, 2000,12
  3. Dynamic response of pre-loaded and pre-stressed reinforce soil structures with ratchet system, Geosynthetics Engineering Journal, 15, 284-293, 2000,12
  4. Dynamic response of pre-loaded and pre-stressed reinforce soil structures under level 2 seismic shaking, Geosynthetics Engineering Journal, 15, 274-283, 2000,12
  5. Model shaking table test for pre-loaded and pre-stressed reinforce soil pier with improved prestressed system, Geosynthetics Engineering Journal, 16, 45-52, 2001,12
  6. Model shaking table test of pre-loaded and pre-stressed reinforce soil structure as seismic isolation foundation, Geosynthetics Engineering Journal, 17, 41-48, 2002,12
  7. Three dimensional model shaking table test for pre-loaded and pre-stressed reinforce soil pier, Geosynthetics Engineering Journal, 17, 33-40, 2002,12
  8. Three dimensional nonlinear analysis of deep beam and its verification, Proceedings of the Japan Concrete Institute, 25, 1051-1056, 2003,7
  9. Seismic performance of corner part of digging tunnel concrete structure, Journal of Structural Engineering, 50A, 969-978, 2004,3
  10. Experimental study on nonlinear response of RC pile foundation in liquefied soils, Proceedings of the Japan Concrete Institute, 26(2), 1177-1182, 2004,7
  11. Interaction between cement hydration and pore structure under different temperature conditions, Proceedings of the Japan Concrete Institute, 26(1), 567-572, 2004,7
  12. Calcium leaching calculation coupling with cement pore structures, Proceedings of the Japan Concrete Institute, 27(1), 715-720, 2005,7
  13. Calcium leaching simulation from cementitious materials contacting to bentonite and surrounding soils, Proceedings of the Japan Concrete Institute, 27(1), 859-864, 2005,7
  14. Numerical analysis of effect of discrete stirrups, Proceedings of the Japan Concrete Institute, 27(2), 805-810, 2005,7
  15. Three dimensional FEM analysis of nonlinear dynamic response of RC pile foundations, Proceedings of the Japan Concrete Institute, 27(2), 925-930, 2005,7
  16. Enhanced thermodynamic modeling based on the temperature dependency of pore structure of hardened cement paste, Proceedings of Japan Society of Civil Engineers, 802(V69), 61-78, 2005,11
  17. Calcium leaching modeling of strong coherency with micro-pore formation of porous media and ion phase equilibrium, Proceedings of Japan Society of Civil Engineers, 802(V69), 79-96, 2005,11
  18. Physicochemical modeling of interaction between natural soil and cementitious material, Proceedings of Japan Society of Civil Engineers, 802(V69), 137-154, 2005,11
  19. Shrinkage evaluation of fly ash concrete by thermodynamic modeling base on pore structure formation and moisture movement, Proceedings of the Japan Concrete Institute, 28(1), 539-544, 2006,7
  20. Performance evaluation of engineered barrier system by thermodynamic modeling, Proceedings of the Japan Concrete Institute, 28(1), 761-766, 2006,7
  21. Modeling of Calcium Leaching from Cement Hydrates Coupled with Micro-Pore Formation, Journal of Advanced Concrete Technology, 4(3), 395-407, 2006,10
  22. Multi-scale Physicochemical Modeling of Soil-Cementitious Material Interaction, Soils and Foundations, Soils and Foundations, 46(5), 653-663, 2006,10
  23. Enhanced Thermodynamics Analysis Coupled with Temperature-Dependent Microstructures of Cement Hydrates, Cement and Concrete Research, 37(2), 139-150, 2007,2
  24. Performance assessment of shear retrofitting on existing RC structures using dispersedly arranged shear reinforcement, Proceedings of Japan Society of Civil Engineers, 63(1), 116-126, 2007,2
  25. Applicability of constant work theory to CPC beam reinforced by FRP, Proceedings of the Japan Concrete Institute, 29(1), 513-518, 2007,7
  26. Mass transport simulation based on pore structure changes under different curing conditions, Proceedings of the Japan Concrete Institute, 29(1), 723-728, 2007,7
  27. Chloride penetration into concrete coated by polymer cement mortar, Proceedings of the Japan Concrete Institute, 29(1), 975-980, 2007,7
  28. Flexural behavior of PPC beam using blast furnace slag PC grouting, Proceedings of the Japan Concrete Institute, 29(3), 451-456, 2007,7
  29. Fresh behavior of blast furnace slag PC grouting with different particle distribution, Proceedings of the Japan Concrete Institute, 61/2007, 142-147, 2008,2
  30. High strength blast furnace slag PC grouting with different particle distribution, Proceedings of the Japan Concrete Institute, 61/2007, 148-153, 2008,2
  31. Fresh properties and hardening behavior of mortar and concrete using low alkalinity cement containing Hauyne, Cement Science and Concrete Technology, 61/2007, 248-254, 2008,2
  32. Expansive and flexural crack behaviors of steel-expansive concrete deck slab type composite girders, Cement Science and Concrete Technology, 61/2007, 624-631, 2008,2
  33. Method for Estimating Mix Proportion in Hardened Concrete based on Physical and Chemical Analysis, Proceedings of the Japan Concrete Institute, 30(1), 537-542, 2008,7
  34. Effect of NaHC03 in bentonite on calcium leaching from cementitious material, Proceedings of the Japan Concrete Institute, 30(1), 717-722, 2008,7
  35. Flexural cracking behavior of PPC beams with different diameter tension reinforcements, Proceedings of the Japan Concrete Institute, 30(3), 541-546, 2008,7
  36. Evaluation of Chloride Penetration in Concrete by Resistivity, Journal of the Society of Materials Science, Japan, 57(10), 1005-1010, 2008,10
  37. Experimental study on effect of carbonation of early aged cement paste on micro-pore structure and effective diffusion coefficient of oxygen, Proceedings of the Japan Concrete Institute, 62/2008, 128-134, 2009,2
  38. Re-evaluation of work by expansive cement concrete with low reinforcement ratios, Cement Science and Concrete Technology, 62/2008, 189-196, 2009,2
  39. Fresh properties and hardening behavior of mortar and concrete using low alkalinity cement containing Hauyne, Cement Science and Concrete Technology, 62/2008, 283-288, 2009,2
  40. Effect of unit cement content, aggregate particle size and curing period on calcium leaching from porous cementitious materials, Proceedings of the Japan Concrete Institute, 31(1), 841-846, 2009,7
  41. Effect of drying and carbonation on cement hydrates and oxygen diffusion coefficient of cement paste, Proceedings of the Japan Concrete Institute, 31(1), 961-966, 2009,7
  42. Effect of drying shrinkage cracking on shear capacity of RC beams, Proceedings of the Japan Concrete Institute, 31(2), 751-756, 2009,7
  43. Experimental study on effect of carbonation of early aged cement paste on micro-pore structure and effective diffusion coefficient of oxygen, Cement Science and Concrete Technology, 63/2009, 99-106, 2010,2
  44. Effect of changes in compositions and pore structures by carbonation on oxygen diffusion coefficient, Proceedings of the Japan Concrete Institute, 32(1), 617-622, 2010,7
  45. Effect of mixing of carbonate into bentonite on leaching from cementitious materials, Proceedings of the Japan Concrete Institute, 32(1), 713-718, 2010,7
  46. Effect of shrinkage-induced stress and cracking on shear capacity of RC beams, Proceedings of the Japan Concrete Institute, 32(2), 673-678, 2010,7
  47. Physical Properties of Mortar and Concrete Using Low-Alkalinity Cement Based on Sulphoaluminate Clinker, Journal of the Chinese Ceramic Society, 38(9), 1623-1630, 2010,9
  48. Influence of co2 concentration on micro-pore structure and oxygen diffusion coefficient of carbonated cement paste at early age, Cement Science and Concrete Technology, 64/2010, 111-118, 2011,2
  49. Re-evaluation of work by expansive cement concrete with low reinforcement ratios, Cement Science and Concrete Technology, Cement Science and Concrete Technology, 64/2010, 154-161, 2011,2
  50. Influence of carbonation at early ages on depth distribution of oxygen diffusion coefficient of hardened cement paste, Cement Science and Concrete Technology, 64/2010, 370-376, 2011,2
  51. Effect of specimen size and drying period on carbonation progress of cement-based materials, Proceedings of the Japan Concrete Institute, 33(1), 725-730, 2011,7
  52. Effect of curing temperature on oxygen diffusion coefficient of cement-based materials, Proceedings of the Japan Concrete Institute, 33(1), 731-736, 2011,7
  53. Change in bending strength of wood chip porous mortar by calcium leaching, Proceedings of the Japan Concrete Institute, 33(1), 1493-1498, 2011,7
  54. Expansive behavior of slab of composite beams of steel and expansive concrete, Proceedings of the Japan Concrete Institute, 33(2), 1201-1206, 2011,7
  55. Analysis of applicability of simplified estimation method of expansive cement concrete using cylindrical light-weight steel mold based on mechanical work, Cement Science and Concrete Technology, 65/2011, 209-216, 2012,2
  56. Carbon dioxide fixation due to photosynthesis of euglena in porous mortar, Cement Science and Concrete Technology, Cement Science and Concrete Technology, 65/2011(536), 543, 2012,2
  57. Cooling effect of moisture evaporation of porous concrete using recycled aggregate, Proceedings of the Japan Concrete Institute, 34(1), 1468-1473, 2012,7
  58. Effect of autogenous shrinkage on performance evaluation of expansive concrete using lightweight mold, Proceedings of the Japan Concrete Institute, 34(1), 1906-1911, 2012,7
  59. Adsorptivity of heavy metals CuII, CdII, and PbII on woodchip-mixed porous mortar, Chemical Engineering Journal, 215-216, 202-208, 2013,1,15
  60. Effect of volumetric change in concrete on shear capacity of RC beams, Proceedings of the Japan Concrete Institute, 35(2), 649-654, 2013,7
  61. Internal curing effect of concrete by waste tile aggregate with salt, Proceedings of the Japan Concrete Institute, 35(2), 643-648, 2013,7
  62. Effect of curing conditions on strength of concrete using municipal solid waste fine aggregate, Proceedings of the Japan Concrete Institute, 35(2), 1585-1590, 2013,7
  63. Effect of moisture content and ponding condition on penetration and leaching of cesium in mortar, Cement Science and Concrete Technology, 67, 210-215, 2014,2
  64. Tension-softening effect of RC members repaired by epoxy resin, Proceedings of the Japan Concrete Institute, 36(2), 397-402, 2014,7
  65. Evaluation of shear strength of expansive RC beams with different effective depth and reinforcement ratio, Proceedings of the Japan Concrete Institute, 36(2), 445-450, 2014,7
  66. Effect of shrinkage and fracture energy on shear strength of RC beams, Proceedings of the Japan Concrete Institute, 36(2), 451-456, 2014,7
  67. Proposal of repair method of honeycombing by resin injection and evaluation of strengths of repaired materials, Proceedings of Japan Society of Civil Engineers, 70(2), 252-271, 2014,6
  68. Capturing in cement paste of heavy metal added with different methods, Cement Science and Concrete Technology, 68, 375-381, 2015,2
  69. Swelling deformation of bentonite mixed with inorganic materials in alkaline solution, Japanese Geotechnical Journal, 10(1), 45-55, 2015,3
  70. Experimental study on shear failure of RC beams with repaired honeycombing in the bottom, Journal of Structural Engineering, 61A, 715-724, 2015,3
  71. Pozzolanic reaction of fly ash cement paste in the presence of alkali activator, Proceedings of JCI Annual Convention, 37(1), 157-162, 2015,7
  72. Comparative study on cover concrete quality tests, Proceedings of the Japan Concrete Institute, 37(1), 673-678, 2015,7
  73. Bending shear failure of RC pillar specimens with repaired honeycombed concrete in the lower end, Proceedings of the Japan Concrete Institute, 37(2), 1231-1236, 2015,7
  74. Effect of carbonation on strength development of cement-treated Toyoura silica sand, Soils and Foundations, 55(4), 857-865, 2015,8
  75. A study on pozzolanic reaction of fly ash cement paste activated by an injection of alkali solution, Construction and Building Materials, 94, 28-34, 2015,9
  76. Shear strength of reinforced concrete beams: concrete volumetric change effects, Journal of Advanced Concrete Technology, 14, 229-244, 20160528
  77. Effect of internal alkali activation on pozzolanic reaction of low-calcium fly ash cement paste, Materials and Structures, 49(8), 3039-3053, 20150829
  78. Strength development of cement-treated soils: Effects of water content, carbonation, and pozzolanic reaction under drying curing condition, Construction and Building Materials, 134, 703-712, 20170301
  79. Shear Strength of Reinforced Limestone Aggregate Concrete Beams, ACI Structural Journal, 114(4), 1007-1017, 20170701
  80. Effect of early age demolding on concrete using waste tile and salt, Proceedings of JCI Annual Convention, 38(1), 603-608, 20160706
  81. Electrical resistance measurement to assess moisture transfer in cement-based mortar through water absorbing and drying processes, Proceedings of JCI Annual Convention, 38(1), 813-818, 20160706
  82. Strength and ecological evaluation of carbonated cement-treated soils, Proceedings of JCI Annual Convention, 38(1), 2241-2246, 20160706
  83. Size effect on shear strength of RC beams using limestone aggregate, Proceedings of JCI Annual Convention, 38(2), 271-276, 20160706
  84. Effects of drying shrinkage of concrete on shear behavior of reinforced concrete beams without shear reinforcement, Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures), 73(1), 50-69, 20170220
  85. Internal curing of Class-F fly-ash concrete using high-volume roof-tile waste aggregate, Materials and Structures, 50(203), 1-12, 20170721
  86. Characteristics of modified soil using calcium aluminate and compressive strength change by carbonation, Proceedings of JCI, 39(1), 2005-2010, 20170712
  87. Long-term pore structure of internally cured fly ash cement paste by an injection of water, Proceedings of JCI annual conference, 39(1), 109-114, 20170712

Invited Lecture, Oral Presentation, Poster Presentation

  1. Covercrete quality of concrete structures, Kenichiro Nakarai, 20150205, 2015/02/05, With Invitation
  2. Seismic stability of geosynthetic-reinforced soil bridge abutment, Nakarai, K., Shinoda, M., Watanabe, K., Tateyama, M., Uchimura, T. and Tatsuoka, F., International Conference on Geosynthetics, 7th, 2002/09, Without Invitation, Nice, France
  3. Modeling of Time-dependent Material Properties of Cemented Soil based on Thermodynamic Approach, Nakarai, K., Ishida, T., The Ninth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-9), 2003/12, Without Invitation, Nusa Dua, Bali
  4. Computational Platform for Life-cycle Assessment of RC/PC Infrastructures, Maekawa, K., Ishida, T. and Nakarai, K., International Conference on Construction IT, 2004/08, Without Invitation
  5. Multi-scale Modeling for Corroded Reinforced Concrete and Soil Foundation, Ishida, T., Nakarai, K., Toongoenthong, K. and Maekawa, K., World Conference on Computational Mechanics VI, 2004/09, Without Invitation, Beijing, China
  6. Damage Analysis of RC Members with Ruptured Main Reinforcement, Nakarai, K., Nagao, N., Igarashi, S. and Maekawa, K., The First International Conference of Asian Concrete Federation, 2004/10, Without Invitation, Chiang Mai, Thailand
  7. Enhanced Modeling of Microstructure Formation of Cement Hydrates Coupled with Thermodynamics, Nakarai, K., Ishida, T., Kishi, T. and Maekawa, K., Cementitious Materials as Model Porous Media: Nanostructure and Transport Processes, 2005/07, Without Invitation, Monte Verità, Switzerland
  8. Capacity Assessment of RC Members and Knee Joints with Ruptured Main Reinforcement, Construction Materials, Nakarai, K., Maekawa, K., ConMat'05 and Mindless Symposium, 2005/08, Without Invitation, Vancouver, Canada
  9. Multi-Scale Modeling of Concrete Performance, Ishida, T., Maekawa, K. and Nakarai, K., COE Workshop on Material Science in 21st century for the construction industry - Durability, repair and recycling of concrete structures, 2005/08, With Invitation, Sapporo, Japan
  10. Chemo-Physical and Mechanical Approach to Performance Assessment of Structural Concrete and Soil Foundation, Maekawa, K., Ishida, T. and Nakarai, K., Transport Properties and Concrete Quality Workshop, 2005/10, Without Invitation, Arizona, The United States
  11. A Unified Approach to Performance Evaluation of Existing Concrete Structure - Integration of a Numerical Simulation Scheme and Durability Indicators, Ishida, T., Maekawa, K. and Nakarai, K., International RILEM Workshop on Performance Based Evaluation and Indicators for Concrete Durability, 2006/03, Without Invitation, Madrid,Spain
  12. Multi-Scale Analysis of Calcium Leaching from Cement coupled with Pore Structure Formation, Nakarai, K., Ishida, T. and Maekawa, K., Seventh CANMET/ACI International Conference on Durability of Concrete, 2006/06, Without Invitation, Montreal, Canada
  13. Multi-Chemo Physical Approach to Life-Cycle Assessment of Structural Concrete, Maekawa, K., Ishida, T. and Nakarai, K.,, The Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), 2006/08, Without Invitation, Bangkok, Thailand
  14. Evaluation on the Stiffness of RC Member with Consideration to Moisture Transport and Change in Volume, Dinh, H. M., Nakarai, K. and Maekawa, K., The Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), 2006/08, Without Invitation, Bangkok, Thailand
  15. Multi-Scale Analysis of Calcium Leaching from Cemented Soil based on Thermodynamic Approach, Akioka, Y., Nakarai, K. and Ishida, T., The Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), Without Invitation, Bangkok, Thailand
  16. Performance Evaluation of Engineered Barrier based on Thermodynamic Modeling of Coupled Cementitious Material and Bentonite, Nakarai, K., Usui, T. and Ishida, T., The Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), Without Invitation, Bangkok, Thailand
  17. Numerical Evaluation of Calcium Leaching from Cementitious Materials in contact with Bentonite, Nakarai, K., Usui, T. and Ishida, T., The International Symposium on Social Management Systems (ISMS2007), 2007/03, Without Invitation, Yichang, China
  18. International Technical Standards in the Field of Concrete, Tsuji, Y., Nakarai, K. and Li, C.-H., The International Symposium on Social Management Systems (ISMS2007), 2007/03, Without Invitation, Yichang, China
  19. Effect of dry density of bentonite in contact with concrete on its alteration after electrical migration, Watanabe, M., Nakarai, K., Sugiyama, T., Tomizawa, N. and Tsuji, Y., 32th Conference on Our World in Concrete & Structures, 2007/08/29, Without Invitation, Singapore
  20. Computational approach to shrinkage of fly ash concrete based on integrated modeling of moisture state and pore structure formation, Nakarai, K., Ishida, T., International Seminar on Durability and Lifecycle Evaluation of Concrete Structures, 2007/09, Without Invitation, Higashi-Hiroshima,Japan
  21. Modeling of calcium leaching from cement hydrates coupled with microstructure formation, Nakarai, K., Ishida, T., Maekawa, K. and Kishi, T, 2nd international conference on concrete modeling (ConMod08), 2008/05/27, Without Invitation, Delft, Netherlands
  22. Modeling of Calcium Leaching from Cemented Composites Coupled with Micro-Pore Structural Reform, Maekawa, K., K., Nakarai, K. and Ishida, T., Joint 8th. World Congress on Computational Mechanics (WCCM8) and 5th. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008), 2008/07/01, With Invitation, Venice, Italy
  23. Numerical evaluation of influence of pozzolanic materials on shrinkage base on moisture state and pore structure, Nakarai, K., Ishida, T., Shrinkage and Durability of Concrete and Concrete Structures (CONCREEP8), 2008/09/30, Without Invitation, Ise-Shima, Japan
  24. Durability mechanics of concrete and concrete structures - re-definition and a new approach, Committee Reports of JCI, Sato, R., Shimomura, T., Maruyama, I. and Nakarai, K., 8th International Conference on Creep, Shrinkage and Durability of Concrete and Concrete Structures (CONCREEP8), 2008/10/01, Without Invitation, Ise-Shima, Japan
  25. Evaluation of long-term durability of engineered barrier system of bentonite and cementitious materials by migration technique, Nakarai, K.., Watanabe, M., Sugiyama, T. and Tsuji, Y., 2nd International Workshop: Mechanisms and modelling of waste/cement interactions (Cement08), 2008/10/14, Without Invitation, Le Croisic, France
  26. Comparative study using some advanced simulation methods for leaching of cementitious materials over thousands of years, Torichigai, T., Yokozeki, K., Ishida, T., Nakarai, K. and Sugiyama, D, Mechanisms and modelling of waste/cement interactions (Cement08), 2008/10/16, Without Invitation, Le Croisic, France
  27. Evaluation of long-term durability of concrete contact with bentonite mixed with NaHCO3 by electrical migration technique, Nakarai, K., Watanabe, M., and Koibuchi, K., International RILEM Workshop on Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plants and Waste Management (NUCPERF2009), 2009/04/01, Without Invitation, Cadarache, France
  28. Numerical evaluation of cement/bentonite interaction in engineered barrier system, Nakarai, K., Ishida, T, European Geosciences Union General Assembly 2009 (EGU2009), 2009/04/22, Without Invitation, Vienna, Austria
  29. Evaluation of long-term durability of concrete contact with bentonite by electrical migration technique for Nuclear Waste Management, Nakarai, K., Watanabe, M., Koibuchi, K. and Tsuji, Y., The Fred Glasser Cement Science Symposium, 2009/06/18, Without Invitation, Aberdeen, Scotland, UK
  30. Mechanical Behaviors and Evaluation of Expansive Concrete Applied to Reinforced Concrete Member, Suhara, K., Ashida, M., Nakarai, K., and Tsuji, Y., 4th International Conference on Construction Materials: Performance, Innovations and Structural Implications, 2009/08, Without Invitation, Nagoya, Japan
  31. Physical Properties of Mortar and Concrete Using Low-Alkalinity Cement Based on Sulphoaluminate Clinker, Fujita, H., Kurauchi, H., Nakarai, K., and Tsuji, Y., 7th International Symposium of Cement & Concrete, 2010/05/11, Without Invitation, Jinan, China
  32. Evolution of cement-bentonite interfaces: Experiments and models, Nakarai, K., Kosakowski, G., Berner, U., and Owada, H., ModelCare 2011, 2011/09/19, Without Invitation, Leipzig, Germany
  33. Swelling deformation of the bentonite mixed with silica fume or sodium carbonate in calcium hydroxide solution, Yuki Yokoyama, Kenichiro Nakarai, Second International Conference on Geotechnique, Construction Materials and Environment, 2012/11, Without Invitation, Kuala Lumpur, Malaysia
  34. Effect of carbonation on strength of cement treated sand, Kenichiro Nakarai, Tomomi Yoshida, Second International Conference on Geotechnique, Construction Materials and Environment, 2012/11, Without Invitation, Kuala Lumpur, Malaysia
  35. Evaporative cooling effect of porous concrete with recycled aggregate, Shinozaki Masumi, Nakarai Kenichiro, The First International Conference on Concrete Sustainability, 2013/05/27, Without Invitation, Tokyo
  36. Properties of concrete containing a molten slag as fine aggregate, Kawamura Kazumasa, Ogawa Yuko, Macharia Martin Mwangi, Nakarai Kenichiro and Sato Ryoichi, The First International Conference on Concrete Sustainability, 2013/05/27, Without Invitation, Tokyo
  37. Structural Performance of RC Beams Containing a Molten Slag as Fine Aggregate, Nakarai Kenichiro, Kawamura Kazumasa, Ogawa Yuko and Sato Ryoichi, The First International Conference on Concrete Sustainability, 2013/05/29, Without Invitation, Tokyo
  38. An Effective Flexural Stiffness Equation for Long Term Deflection of Prestressed Concrete with and without Cracks, Sato Ryoichi, Nakarai Kenichiro, Ogawa Yuko and Kawai Kenji, The ninth international Conference on Creep, Shrinkage and Durability Mechanics of Concrete, 2013/09, Without Invitation, Cambridge, Massachusetts, United States
  39. Effect of pozzolan on cement-bentonite interaction in nuclear waste management, Nakarai Kenichiro, Yokoyama Yuki, The Third International Conference on Sustainable Construction Materials & Technologies, 2013/08/21, Without Invitation, Kyoto, Japan
  40. Behavior of Penetration and Leaching of Cesium in Mortar Having Various Fine Aggregates and Moisture Content, Ito Masashi, Nakarai Kenichiro, Hayashi Akihiko and Kawai Kenji, Third International Conference on Geotechnique, Construction Materials and Environment, 2013/11/15, Without Invitation, Nagoya, Japan
  41. Swelling Deformantion of Bentonite Mixed with Inorganic Materials in Alkaline Solution, Yokoyama Yuki, Nakarai Kenichiro, Third International Conference on Geotechnique, Construction Materials and Environment, 2013/11, Without Invitation, Nagoya, Japan
  42. Effect of volume change of concrete on shear capacity of RC beam and its evaluation, Nakarai, K., Matsushita, S. and Morito, S., Fourth international fib congress 2014, 2014/02/11, Without Invitation, Mumbai, India
  43. A new repair method of honeycombing by resin infusion without removing attached aggregates, Sasaki, N., Kobayashi, K., and Nakarai, K., Fourth international fib congress 2014, 2014/02/12, Without Invitation, Mumbai, India
  44. Sustainable construction work based on prediction and verification considering interaction in total system, Nakarai, K., International workshop on concrete sustainability, 2014/03/07, Without Invitation, Takamatsu, Japan
  45. Performance of Reinforced Concrete Beams Containing a Molten Slag as Fine Aggregate, Nakarai Kenichiro, Kawamura Kazumasa, Ogawa Yuko and Sato Ryoichi, Hybrid 2014 "Exploring the Potential of Hybrid Structures for Sustainable Construction, 2014/06/23, Without Invitation, Fribourg, Switzerland
  46. Calcium leaching of cement paste in contact with bentonite mixed with carbonate for engineered barrier system, Nakarai, K., Shibata, M. and Sakamoto, H., Fourth International Symposium on Life-Cycle Civil Engineering (IALCCE2014), 2014/10/19, Without Invitation, Tokyo, Japan
  47. Covercrete quality and durability verification of concrete structures: summary of JSCE335 technical report, Nakarai, K., Kurashige, I. and Kishi, T., International Conference on the Regeneration and Conservation of Concrete Structures (RCCS), 2015/07/02, Without Invitation, Japan Concrete Institute, Nagasaki, Japan
  48. Activity of JSCE TC 335 and subsequent deployment, Nakarai, K., International Workshop on Concrete Durability, 2015/07/04, Without Invitation, Japan Concrete Institute, Nagasaki, Japan
  49. Effect of lime stone aggregate on drying shrinkage and shear strength of RC beam, Nakarai, K., Sato, R., Ogawa, Y., and Kawai, K., Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP-10), 2015/09/21, Without Invitation, Vienna University of Technology, Vienna, Austria
  50. Experimental Study on Effects of Loading Rate on the Shear Performance of RC Beam, Piseth, V., Nakarai, K., Chijiwa, N. and Maekawa, K., Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP-10), 2015/09/22, Without Invitation, Vienna University of Technology, Vienna, Austria
  51. Experimental studies on effective creep coefficient in prestressed concrete girder, Ogawa, Y., Kameta, S., Sato, R., Nakarai, K., and Kawai, K., Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP-10), 2015/09/21, Without Invitation, Vienna University of Technology, Vienna, Austria
  52. Delayed shear crack formation of shallow RC box culverts in service, Chijiwa, N., Zhu, X., Ohno, H. Tanabe, S., Nakarai, K., and Maekawa, K., Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP-10), 2015/09/22, Without Invitation, Vienna University of Technology, Vienna, Austria
  53. Effect of lime stone aggregate on properties of concrete and reinforced concrete structure, Nakarai, K., Kawai, N., Sato, R., Ogawa, Y., and Kawai, K., The Third Scientific Conference in Transport Technology, 2015/10/17, Without Invitation, University of Transport Technology, Hanoi, Vietnam
  54. Effect of carbonation under drying condition on strength development of cement-treated soil, Ho, L.S., Nakarai, K., Sasaki, T., Watanabe, M. and Morioka, M., The Third Scientific Conference in Transport Technology, 2015/10/17, Without Invitation, University of Transport Technology, Hanoi, Vietnam
  55. Comparative Study of Permeability Tests of Covercrete, Mori, Y, Yamanaka, S., Nakarai, K., Nishio, S., The 14th International Conference on Civil and Environmental Engineering (ICCEE 2015), 2015/10/09, Without Invitation, NCU, Taoyuan, Taiwan
  56. Effect of limestone aggregate on shear strength of RC beams, Nao KAWAI, Kenichiro NAKARAI, Yuko OGAWA and Ryoichi SATO, The 14th International Conference on Civil and Environmental Engineering (ICCEE 2015), 2015/10/09, Without Invitation, NCU, Taoyuan, Taiwan
  57. Effect of volumetric changes of concrete and loading rates on shear strength of RC beams, Kenichiro Nakarai, The 14th International Conference on Civil and Environmental Engineering (ICCEE 2015), 2015/10/09, With Invitation, NCU, Taoyuan, Taiwan
  58. An Experimental Study on the Effect of Internal Curing with Roof Tile Waste on Relative Humidity of Fly Ash Concrete, Yuko Ogawa, Kenichiro Nakarai, Kenji Kawai and Ryoichi Sato, The Fourteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-14), 2016/01/06, Without Invitation, HCMC University of Technology, Ho Chi Minh City, Vietnam
  59. Effects of Carbonation and Water Content on Strength Development of Cement-Treated Soil, Lanh Si Ho, Kenichiro Nakarai, Takashi Sasaki, Masaaki Watanabe and Minoru Morioka, The Fourteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-14), 2016/01/06, Without Invitation, HCMC University of Technology, Ho Chi Minh City, Vietnam
  60. Effect of Internal Activation on Pozzolanic Reaction in Fly Ash Cement Paste by Using Sodium Hydroxide Solution, Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai and Kenji Kawai, Fourteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-14), 2016/01/06, Without Invitation, HCMC University of Technology, Ho Chi Minh City, Vietnam
  61. Effect of Internal Alkali Activation on Long-Term Pozzolanic Reaction of Fly Ash in Cement Paste, Trinh P. Bui, Kazuki Ootaishi, Yuko Ogawa, Kenichiro Nakarai and Kenji Kawai, Second International Conference on Concrete Sustainability (ICCS16), 2016/06/13, Without Invitation, International Center for Numerical Methods in Engineering, Madrid, Spain
  62. Effect of Injection of NaOH Solution on Pozzolanic and Hydration Reactions in Low-Calcium Fly Ash Cement Paste, Trinh P. Bui, Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai, The Fourth International Conference on Sustainable Construction Materials and Technologies (SCMT4), 2016/08/07, Without Invitation, University of Nevada, Las Vegas, Nevada
  63. Contribution of carbonation under drying curing condition to strength development of cement-treated soils, Lanh Ho Si, Kenichiro Nakarai, Takashi Sasaki, Masaaki Watanabe and Minoru Morioka, The 11th fib International PhD Symposium in Civil Engineering, 2016/08/29, Without Invitation, fib, Tokyo, Japan
  64. Effect of loading conditions on shear creep failure of RC beams, Halwan Alfisa Saifullah, Kenichiro Nakarai, Van Piseth, Nobuhiro Chijiwa and Koichi Maekawa, The 11th fib International PhD Symposium in Civil Engineering, 2016/08/31, Without Invitation, fib, Tokyo, Japan
  65. Effects of internal curing with high-volume roof tile waste on compressive strength and porosity of fly ash concrete, P.T. Bui, Y. Ogawa, K. Nakarai, K. Kawai and R. Sato, The 7th International Conference of Asian Concrete Federation (ACF2016), 2016/10/30, Without Invitation, Asian Concrete Federation, Hanoi, Vietnam
  66. Application of a simple evaluation method for steam cured expansive concrete, Yu Sasaki, Kenichiro Nakarai,Hideaki Karasawa,Yuji Tadokoro,Masato Tsujino, The 7th International Conference of Asian Concrete Federation (ACF2016), 2016/10/30, Without Invitation, Asian Concrete Federation, Hanoi, Vietnam
  67. An experimental investigation of hardness and pore structure of low-calcium fly ash cement paste internally alkali activated using roof tile waste aggregate, BUI P. Trinh, OGAWA Yuko, NAKARAI Kenichiro and KAWAI Kenji, 14th International Conference on Durability of Building Materials and Components, 2017/05/29, Without Invitation, Ghent University, Ghent, Belgium
  68. Concrete Engineering and its Contribution to Nuclear Waste Management, Kenichiro Nakarai, Research Conference on Cementitious Composites in Decommissioning and Waste Management (RCWM2017), 2017/06/20, With Invitation, JAEA, Tomioka, Fukushima, Japan

Awards

  1. 2003年11月11日, Best Presentation Award, Japan Society of Civil Engineers
  2. 2004年10月28日, Best Presentation Award, Japan Society of Civil Engineers
  3. 2004年05月28日, Yoshida Young Researcher Award, Japan Society of Civil Engineers
  4. 2005年06月22日, Best Paper Award, Japan Concrete Institute
  5. 2005年07月11日, Best Presentation Award, Japan Cement Association
  6. 2005年07月22日, Best Presentation Award, Japanese Geotechnical Society
  7. 2005年12月26日, Best Presentatoin Award, Japan Society of Civil Engineers
  8. 2006年05月26日, Best Paper Award for Young Researcher, Japan Society of Civil Engineers
  9. 2007年05月22日, Best Paper Award for Young Researcher, Japan Concrete Institute
  10. 2007年06月08日, Maeda Engineering Award, Maeda Engineering Foudation
  11. 2008年05月29日, Best Paper Award for Young Researcher, Japan Geotechnical Engineering
  12. 2008年12月10日, Best Presentatoin Award, Japan Society of Civil Engineers
  13. 2009年04月14日, The Young Scientists' Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Ministry of Education, Culture, Sports, Science and Technology
  14. 2009年05月08日, Best Teacher Award, Gunma University
  15. 2010年02月05日, Yokoyama Science and Technology Award, Yokoyama Science and Technology Award Committee
  16. 2010年07月09日, Best Paper Award, Japan Concrete Institute
  17. 2011年07月07日, Best Presentation Award, Japan Cement Association
  18. 2015年05月13日, Best paper, Japan Cement Association, Capturing in cement paste of heavy metal added with different methods
  19. 2015年12月01日, Best Presentatoin Award, Japan Society of Civil Engineers