Hiroshima University
Nakarai Laboratory
Structural Engineering Laboratory for Design and Maintenance of Structures

Publications

Peer-Reviewed Papers

  1. Kenichiro Nakarai, Surapong Uttama, and Toshiharu Kishi: Direct tensile strength of blast furnace slag mortar, Proceedings of the Japan Concrete Institute, Vol22, No.2, pp.505-510, 2000.6
  2. Kenichiro Nakarai, Masahiro Shinoda, Syunta Yamamoto, Kenichi Kojima, Masaru Tateyama, Taro Uchimura, and Fumio Tatsuoka: Natural frequency of pre-loaded and pre-stressed reinforce soil pier, Geosynthetics Engineering Journal, Vol.15, pp.302-311, 2000.12 https://doi.org/10.5030/jcigsjournal.15.302
  3. Syunta Yamamoto, Masahiro Shinoda, Kenichiro Nakarai, Toshihiro Natsuki, Tetsuhiro Kato, Yasuyuki Kitano, Norihisa Kato, Taro Uchimura, and Fumio Tatsuoka: Dynamic response of pre-loaded and pre-stressed reinforce soil structures with ratchet system, Geosynthetics Engineering Journal, Vol.15, pp.284-293, 2000.12 https://doi.org/10.5030/jcigsjournal.15.284
  4. Masahiro Shinoda, Takatoshi Ishimura, Kenichiro Nakarai, Syunta Yamamoto, Toshihiro Natsuki, Tetsuhiro Kato, Yasuyuki Kitano, Norihisa Kato, Taro Uchimura, and Fumio Tatsuoka: Dynamic response of pre-loaded and pre-stressed reinforce soil structures under level 2 seismic shaking, Geosynthetics Engineering Journal, Vol.15, pp.274-283, 2000.12 https://doi.org/10.5030/jcigsjournal.15.274
  5. Kenichiro Nakarai, Masahiro Shinoda, Kenji Watanabe, Masaru Tateyama, Taro Uchida, and Fumio Tatsuoka: Model shaking table test for pre-loaded and pre-stressed reinforce soil pier with improved prestressed system, Geosynthetics Engineering Journal, Vol.16, pp.45-52, 2001.12 https://doi.org/10.5030/jcigsjournal.16.45
  6. Akitoshi Furuya, Kenichiro Nakarai, Taro Uchimura, and Fumio Tatsuoka: Model shaking table test of pre-loaded and pre-stressed reinforce soil structure as seismic isolation foundation, Geosynthetics Engineering Journal, Vol.17, pp.41-48, 2002.12 https://doi.org/10.5030/jcigsjournal.17.41
  7. Kenichiro Nakarai, Kenji Watanabe, Masaru Tateyama, Taro Uchida, and Fumio Tatsuoka: Three dimensional model shaking table test for pre-loaded and pre-stressed reinforce soil pier, Geosynthetics Engineering Journal, Vol.17, pp.33-40, 2002.12 https://doi.org/10.5030/jcigsjournal.17.33
  8. Kenichiro Nakarai, Yasuhiro Miwa, and Koichi Maekawa: Three dimensional nonlinear analysis of deep beam and its verification, Proceedings of the Japan Concrete Institute, Vol.25, No.2, pp.1051-1056, 2003.7
  9. Hitoshi Tajima, Masahiko Kishida, Kenichiro Nakarai, Koichi Maekawa, and Kazutoshi Yamamoto: Seismic performance of corner part of digging tunnel concrete structure, Journal of Structural Engineering, Vol.50A, No.3, pp.969-978, 2004.3
  10. Nobuyuki Nabeshima, Takeshi Maki, Kenichiro Nakarai, and Katsunori Hirano: Experimental study on nonlinear response of RC pile foundation in liquefied soils, Proceedings of the Japan Concrete Institute, Vol.26, No.2, pp.1177-1182, 2004.7
  11. Kenichiro Nakarai, Tetsuya Ishida, Toshiharu Kishi, Koichi Maekawa: Interaction between cement hydration and pore structure under different temperature conditions, Proceedings of the Japan Concrete Institute, Vol.26, No.1, pp.567-572, 2004.7
  12. Kenichiro Nakarai, Tetsuya Ishida, Tatsuya Usui, Koichi Maekawa: Calcium leaching calculation coupling with cement pore structures, Proceedings of the Japan Concrete Institute, Vol.27, No.1, pp.715-720, 2005.7
  13. Tatsuya Usui, Tetsuya Ishida, Kenichiro Nakarai, and Takahito Sakimura: Calcium leaching simulation from cementitious materials contacting to bentonite and surrounding soils, Proceedings of the Japan Concrete Institute, Vol.27, No.1, pp.859-864, 2005.7
  14. Hai Le Duyen, Kenichiro Nakarai, and Koichi Maekawa: Numerical analysis of effect of discrete stirrups, Proceedings of the Japan Concrete Institute, Vol.27,No.2, pp.805-810, 2005.7
  15. Takeshi Maki, Koichi Maekawa, Kenichiro Nakarai, and Katsunori Hirano: Three dimensional FEM analysis of nonlinear dynamic response of RC pile foundations, Proceedings of the Japan Concrete Institute, Vol.27, No.2, pp.925-930, 2005.7
  16. Kenichiro Nakarai, Tetsuya Ishida, Toshiharu Kishi, and Koichi Maekawa: Enhanced thermodynamic modeling based on the temperature dependency of pore structure of hardened cement paste, Proceedings of Japan Society of Civil Engineers, No.802(V69), pp.61-78, 2005.11 https://doi.org/10.2208/jscej.2005.802_61
  17. Kenichiro Nakarai, Tetsuya Ishida, Koichi Maekawa, and Satoshi Nakane: Calcium leaching modeling of strong coherency with micro-pore formation of porous media and ion phase equilibrium, Proceedings of Japan Society of Civil Engineers, No.802(V69), pp.79-96, 2005.11 https://doi.org/10.2208/jscej.2005.802_79
  18. Kenichiro Nakarai, Tetsuya Ishida, and Koichi Maekawa: Physicochemical modeling of interaction between natural soil and cementitious material, Proceedings of Japan Society of Civil Engineers, No.802(V69), pp.137-154, 2005.11 https://doi.org/10.2208/jscej.2005.802_137
  19. Kenichiro Nakarai and Tetsuya Ishida: Shrinkage evaluation of fly ash concrete by thermodynamic modeling base on pore structure formation and moisture movement, Proceedings of the Japan Concrete Institute, Vol.28, No.1, pp.539-544, 2006.7
  20. Tatsuya Usui, Kenichiro Nakarai, and Tetsuya Ishida: Performance evaluation of engineered barrier system by thermodynamic modeling, Proceedings of the Japan Concrete Institute, Vol.28, No.1, pp.761-766, 2006.7
  21. Kenichiro Nakarai, Tetsuya Ishida, and Koichi Maekawa: Modeling of Calcium Leaching from Cement Hydrates Coupled with Micro-Pore Formation, Journal of Advanced Concrete Technology, Vol.4, No.3, pp.395-407, 2006.10 https://doi.org/10.3151/jact.4.395
  22. Kenichiro Nakarai, Tetsuya Ishida, and Koichi Maekawa: Multi-scale Physicochemical Modeling of Soil-Cementitious Material Interaction, Soils and Foundations, Vol.46, No.5, pp.653-663, 2006.10 https://doi.org/10.3208/sandf.46.653
  23. Kenichiro Nakarai, Tetsuya Ishida, Toshiharu Kishi, and Koichi Maekawa： Enhanced Thermodynamics Analysis Coupled with Temperature-Dependent Microstructures of Cement Hydrates, Cement and Concrete Research, Vol.37, Issue 2, pp.139-150, 2007.2 https://doi.org/10.1016/j.cemconres.2006.10.006
  24. Kenichiro Nakarai, Hai Le Duyen, Koichi Maekawa: Performance assessment of shear retrofitting on existing RC structures using dispersedly arranged shear reinforcement, Proceedings of Japan Society of Civil Engineers, Vol.63, No.1, pp.116-126, 2007.2 https://doi.org/10.2208/jsceje.63.116
  25. Atsuhiro Hagiwara, Yukikazu Tuji, Kenichiro Nakarai, and Chun-He Li: Applicability of constant work theory to CPC beam reinforced by FRP, Proceedings of the Japan Concrete Institute, Vol.29, No.1, pp.513-518, 2007.7
  26. Kenichiro Nakarai, Tetsuya Ishida, Chun-He Li, Hirotaka Miura: Mass transport simulation based on pore structure changes under different curing conditions, Proceedings of the Japan Concrete Institute, Vol.29, No.1, pp.723-728, 2007.7
  27. Naoki Togezaka, Takafumi Sugiyama, Yasunori Matsuda, Kenichiro Nakarai: Chloride penetration into concrete coated by polymer cement mortar, Proceedings of the Japan Concrete Institute, Vol.29, pp.975-980, No.1, 2007.7
  28. Chun-He Li, Hirotaka Ariga, Yukikazu Tsuji, and Kenichiro Nakarai: Flexural behavior of PPC beam using blast furnace slag PC grouting, Proceedings of the Japan Concrete Institute, Vol.29, No.3, pp.451-456, 2007.7
  29. Masashi Ikeda, Fumiyoshi Aoki, Kenichiro Nakarai, and Yukikazu Tuji: Fresh behavior of blast furnace slag PC grouting with different particle distribution, Proceedings of the Japan Concrete Institute, 61/2007, pp.142-147, 2008.2
  30. Chun-He Li, Yukikazu Tsuji, Kenichiro Nakarai, and Fumiyoshi Aoki: High strength blast furnace slag PC grouting with different particle distribution, Proceedings of the Japan Concrete Institute, Vol.61/2007, pp.148-153, 2008.2
  31. Hideki Fujita, Hidetoshi Kurauchi, Kenichiro Nakarai, and Yukikazu Tuji: Fresh properties and hardening behavior of mortar and concrete using low alkalinity cement containing Hauyne, Cement Science and Concrete Technology, Vol.61/2007, pp.248-254, 2008.2
  32. Atsuhiro Hagiwara, Yukikazu Tuji, Kenichiro Nakarai, and Chun-He Li: Expansive and flexural crack behaviors of steel-expansive concrete deck slab type composite girders, Cement Science and Concrete Technology, Vol.61/2007, pp.624-631, 2008.2
  33. Chun-He Li, Tetsuya Ishida, and Kenichiro Nakarai: Method for Estimating Mix Proportion in Hardened Concrete based on Physical and Chemical Analysis, Proceedings of the Japan Concrete Institute, Vol.30, No.1, pp.537-542, 2008.7
  34. Masaki Watanabe and Kenichiro Nakarai: Effect of NaHC03 in bentonite on calcium leaching from cementitious material, Proceedings of the Japan Concrete Institute, Vol.30, No.1, pp.717-722, 2008.7
  35. Masashi Ikeda, Chun-He Li, Yukikazu Tsuji, Kenichiro Nakarai: Flexural cracking behavior of PPC beams with different diameter tension reinforcements, Proceedings of the Japan Concrete Institute, Vol.30, No.3, pp.541-546, 2008.7
  36. Keitaro Kabe, Takafumi Sugiyama, Kenichiro Nakarai, and Yukikazu Tsuji: Evaluation of Chloride Penetration in Concrete by Resistivity, Journal of the Society of Materials Science, Japan, Vol.57, No.10, pp.1005-1010, 2008.10 https://doi.org/10.2472/jsms.57.1005
  37. Chun-He Li, Kenichiro Nakarai, and Yusuke Ishii: 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, Vol.62/2008, pp.128-134, 2009.2
  38. Kenichiro Nakarai, Atsuhiro Hagiwara, and Yukikazu Tsuji: Re-evaluation of work by expansive cement concrete with low reinforcement ratios, Cement Science and Concrete Technology, Vol.62/2008, pp.189-196, 2009.2
  39. Hideki Fujita, Hidetoshi Kurauchi, Kenichiro Nakarai, and Yukikazu Tsuji: Fresh properties and hardening behavior of mortar and concrete using low alkalinity cement containing Hauyne, Cement Science and Concrete Technology, Vol.62/2008, pp.283-288, 2009.2
  40. Masahiro Ono, Kenichiro Nakarai, and Yasuaki Yamada: Effect of unit cement content, aggregate particle size and curing period on calcium leaching from porous cementitious materials, Proceedings of the Japan Concrete Institute, Vol.31, No.1, pp.841-846, 2009.7
  41. Yusuke Ishii, Chun-He Li, Kenichiro Nakarai, and Kiyonori Yokozuka: Effect of drying and carbonation on cement hydrates and oxygen diffusion coefficient of cement paste, Proceedings of the Japan Concrete Institute, Vol.31, No.1, pp.961-966, 2009.7
  42. Shigemitsu Morito and Kenichiro Nakarai: Effect of drying shrinkage cracking on shear capacity of RC beams, Proceedings of the Japan Concrete Institute, Vol.31, No.2, pp.751-756, 2009.7
  43. Chun-He Li, Kenichiro Nakarai, Yusuke Ishii, and Kiyonori Yokozuka: 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, Vol.63/2009, pp.99-106, 2010.2 https://doi.org/10.14250/cement.63.99
  44. Yusuke Ishii, Kenichiro Nakarai, and Chun-He Li: Effect of changes in compositions and pore structures by carbonation on oxygen diffusion coefficient, Proceedings of the Japan Concrete Institute, Vol.32, No.1, pp.617-622, 2010.7
  45. Kenichiro Nakarai, Masaki Watanabe, Hirokazu Ishii, and Kiyoshi Koibuchi: Effect of mixing of carbonate into bentonite on leaching from cementitious materials, Proceedings of the Japan Concrete Institute, Vol.32, No.1, pp.713-718, 2010.7
  46. Shigemitsu Morito and Kenichiro Nakarai: Effect of shrinkage-induced stress and cracking on shear capacity of RC beams, Proceedings of the Japan Concrete Institute, Vol.32, No.2, pp.673-678, 2010.7
  47. Hideki Fujita, Hidetoshi Kurauchi, Kenichiro Nakarai, and Yukikazu Tsuji: Physical Properties of Mortar and Concrete Using Low-Alkalinity Cement Based on Sulphoaluminate Clinker, Journal of the Chinese Ceramic Society, Vol.38, No.9, pp.1623-1630, 2010.9
  48. Takeru Uehara, Chun-He Li, Kenichiro Nakarai, Yusuke Ishii: Influence of co2 concentration on micro-pore structure and oxygen diffusion coefficient of carbonated cement paste at early age, Cement Science and Concrete Technology, Vol.64/2010, pp.111-118, 2011.2 https://doi.org/10.14250/cement.64.111
  49. Kenichiro Nakarai, Masaru Morita, and Yukikazu Tsuji: Re-evaluation of work by expansive cement concrete with low reinforcement ratios, Cement Science and Concrete Technology, Vol.64/2010, pp.154-161, 2011.2 https://doi.org/10.14250/cement.64.154
  50. Kiyonori Yokozuka, Chun-He Li, and Kenichiro Nakarai: Influence of carbonation at early ages on depth distribution of oxygen diffusion coefficient of hardened cement paste, Cement Science and Concrete Technology, Vol.64/2010, pp.370-376, 2011.2
  51. Kiyonori Yokozuka, Kenichiro Nakarai, and Chun-He Li: Effect of specimen size and drying period on carbonation progress of cement-based materials, Proceedings of the Japan Concrete Institute, Vol.33, No.1, pp.725-730, 2011.7
  52. Takeru Uehara and Kenichiro Nakarai: Effect of curing temperature on oxygen diffusion coefficient of cement-based materials, Proceedings of the Japan Concrete Institute, Vol.33, No.1, pp.731-736, 2011.7
  53. Yuji Suzuki, Kenichiro Nakarai, Masanobu Mori, and Yusuke Kobayashi: Change in bending strength of wood chip porous mortar by calcium leaching, Proceedings of the Japan Concrete Institute, Vol.33 No.1, pp.1493-1498, 2011.7
  54. Nao Fukuda, Yukikazu Tsuji, Kenichiro Nakarai, and Tatsuya Mizukami: Expansive behavior of slab of composite beams of steel and expansive concrete, Proceedings of the Japan Concrete Institute, Vol.33 No.2, pp.1201-1206, 2011.7
  55. Kenichiro Nakarai, Yusuke Kurihara, Hiroshi Hashida, and Masato Tsujino: 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, pp.209-216, 2012.2 https://doi.org/10.14250/cement.65.209
  56. Noritaka Uchikawa and Kenichiro Nakarai: Carbon dioxide fixation due to photosynthesis of euglena in porous mortar, Cement Science and Concrete Technology, Cement Science and Concrete Technology, 65/2011, pp.536-543, 2012.2 https://doi.org/10.14250/cement.65.536
  57. Masumi Shinozaki and Kenichiro Nakarai: Cooling effect of moisture evaporation of porous concrete using recycled aggregate, Proceedings of the Japan Concrete Institute, Vol.34, No.1, pp.1468-1473, 2012.7
  58. Yusuke Kurihara and Kenichiro Nakarai: Effect of autogenous shrinkage on performance evaluation of expansive concrete using lightweight mold, Proceedings of the Japan Concrete Institute, Vol.34, No.1, pp.1906-1911, 2012.7
  59. Masanobu Mori, Yoshimasa Sekine, Naoko Hara, Kenichiro Nakarai, Yuji Suzuki, Haruka Kuge, Yusuke Kobayashi, Akira Arai, and Hideyuki Itabashi: Adsorptivity of heavy metals CuII, CdII, and PbII on woodchip-mixed porous mortar, Chemical Engineering Journal, Vol.215-216, pp.202-208, 2013.1.15 https://doi.org/10.1016/j.cej.2012.10.097
  60. Shota Matsushita and Kenichiro Nakarai: Effect of volumetric change in concrete on shear capacity of RC beams, Proceedings of the Japan Concrete Institute, Vol.35, No.2, pp.649-654, 2013.7
  61. Katsutoshi Beppu, Ippei Maruyama, Kenichiro Nakarai, and Kazuo Yamada: Basic study on the contamination of concrete outer wall caused by radioactive cesium and its evaluation, Proceedings of the Japan Concrete Institute, Vol.35, No.2, pp.1939-1944, 2013.7
  62. Kenichiro Nakarai, Ryoichi Sato, Yuko Ogawa, and Kenji Kawai: Prediction of Long-Term Deflection of Prestressed Concrete Box Girders by Effective Flexural Stiffness Equation, Proceedings of the Japan Concrete Institute, Vol.35, No.2, pp.469-474, 2013.7
  63. Natsumi Hamamoto, Kenichiro Nakarai, Yuko Ogawa, and Ryoichi Sato: Internal curing effect of concrete by waste tile aggregate with salt, Proceedings of the Japan Concrete Institute, Vol.35, No.2, pp.643-648, 2013.7
  64. Yuko Ogawa, Kazumasa Kawamura, Kenichiro Nakarai, and Ryoichi Sato: Effect of curing conditions on strength of concrete using municipal solid waste fine aggregate, Proceedings of the Japan Concrete Institute, Vol.35, No.2, pp.1585-1590, 2013.7
  65. Masashi Itoh, Kenichiro Nakarai, Akihiko Hayashi, and Kenji Kawai: Effect of moisture content and ponding condition on penetration and leaching of cesium in mortar, Cement Science and Concrete Technology, Vol.67, pp.210-215, 2014.2 https://doi.org/10.14250/cement.67.210
  66. Naomi Sasaki, Kaoru Kobayashi, and Kenichiro Nakarai: Tension-softening effect of RC members repaired by epoxy resin, Proceedings of the Japan Concrete Institute, Vol.36, No.2, pp.397-402, 2014.7
  67. Kohei Sasada, Kazuya Miyamoto, Kenichiro Nakarai, and Ryoishi Sato: Evaluation of shear strength of expansive RC beams with different effective depth and reinforcement ratio, Proceedings of the Japan Concrete Institute, Vol.36, No.2, pp.445-450, 2014.7
  68. Nao Kawai, Kohei Sasada, Kenichiro Nakarai, and Ryoichi Sato: Effect of shrinkage and fracture energy on shear strength of RC beams, Proceedings of the Japan Concrete Institute, Vol.36, No.2, pp.451-456, 2014.7
  69. Naomi Sasaki, Kaoru Kobayashi, and Kenichiro Nakarai: Proposal of repair method of honeycombing by resin injection and evaluation of strengths of repaired materials, Proceedings of Japan Society of Civil Engineers, Vol.70, No.2, pp.252-271, 2014.6 https://doi.org/10.2208/jscejmcs.70.252
  70. Akihiko Hayashi, Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai: Capturing in cement paste of heavy metal added with different methods, Cement Science and Concrete Technology, Vol.68, No.1, pp.375-381, 2015.2 https://doi.org/10.14250/cement.68.375
  71. Makoto Shoji, Minoru Morioka, Tomomi Yoshida, and Kenichiro Nakarai: INSTIGATION ON MECHANISM OF LONG-TERM STRENGTH DEVELOPMENT OF CARBONATED CEMENT-TREATED SAND, Cement Science and Concrete Technology, Vol.68, No.1, pp.523-528, 2015.2 https://doi.org/10.14250/cement.68.523
  72. Yuki Yokoyama, Kenichiro Nakarai, Tizuru Shimakura, and Kiyoshi Koibuchi: Swelling deformation of bentonite mixed with inorganic materials in alkaline solution, Japanese Geotechnical Journal, Vol.10, No.1, pp.45-55, 2015.3 https://doi.org/10.3208/jgs.10.45
  73. Naomi Sasaki, Kaoru Kobayashi, and Kenichiro Nakarai: Experimental study on shear failure of RC beams with repaired honeycombing in the bottom, Journal of Structural Engineering, Vol.61A, pp.715-724, 2015.3 https://doi.org/10.11532/structcivil.61A.715
  74. Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai: Pozzolanic reaction of fly ash cement paste in the presence of alkali activator, Proceedings of JCI Annual Convention, Vol.37, No.1, pp.157-162, 2015.7
  75. Yuta Mori, Shota Yamanaka, Kenichiro Nakarai, and Sohei Nishio: Comparative study on cover concrete quality tests, Proceedings of the Japan Concrete Institute, Vol.37, No.1, pp.673-678, 2015.7
  76. Naomi Sasaki, Kaoru Kobayashi, and Kenichiro Nakarai: Bending shear failure of RC pillar specimens with repaired honeycombed concrete in the lower end, Proceedings of the Japan Concrete Institute, Vol.37, No.2, pp.1231-1236, 2015.7
  77. Kenichiro Nakarai and Tomomi Yoshida: Effect of carbonation on strength development of cement-treated Toyoura silica sand, Soils and Foundations, Vol.55, Issue.4, pp.857-865, 2015.8 https://doi.org/10.1016/j.sandf.2015.06.016
  78. Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai: A study on pozzolanic reaction of fly ash cement paste activated by an injection of alkali solution, Construction and Building Materials, Vol.94, pp.28-34, 2015.9.30 https://doi.org/10.1016/j.conbuildmat.2015.06.046
  79. Naomi Sasaki, Kaoru Kobayashi, and Kenichiro Nakarai: Analysis Of Delamination Behavior At Conventional Repaired Boundary Of Honeycombing Of RC Beams And Effectiveness Of Proposed Repair Method By Cyclic Loading test, Proceedings of Japan Society of Civil Engineers, E2, Vol.71, No.4, pp.365-384, 2015.11 https://doi.org/10.2208/jscejmcs.71.365
  80. Kenichiro Nakarai, Shigemitsu Morito, Masaki Ehara, and Shota Matsushita: Shear strength of reinforced concrete beams: concrete volumetric change effects, Journal of Advanced Concrete Technology, Vol.14, pp.229-244, 2016.5.28 https://doi.org/10.3151/jact.14.229
  81. Syota Yamanaka, Kenichiro Nakarai: Effect of demolding at early age on compressive strength of concrete with roof waste aggregate and salt, Proceedings of JCI Annual Convention, Vol.38, No.1, pp.603-608, 2016.7
  82. Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai: Electrical resistance measurement to assess moisture transfer in cement-based mortar through water absorbing and drying processes，Proceedings of JCI Annual Convention, Vol.38, No.1, pp.813-818, 2016.7.6
  83. Takashi Sasaki, Masaaki Watanabe, Minoru Morioka, and Kenichiro Nakarai: Strength and ecological evaluation of carbonated cement-treated soils, Proceedings of JCI Annual Convention, Vol.38, No.1, pp.2241-2246, 2016.7.6
  84. Yuh Sasaki, Nao Kawai, Kenichiro Nakarai, and Ryoichi Sato: Size effect on shear strength of RC beams using limestone aggregate, Proceedings of JCI Annual Convention, Vol.38, No.2, pp.271-276, 2016.7.6
  85. Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai, Kenji Kawai: Effect of internal alkali activation on pozzolanic reaction of low-calcium fly ash cement paste, Materials and Structures, Vol.49, No.8, pp.3039-3053, 2015.8.29
    https://doi.org/10.1617/s11527-015-0703-6
  86. Lanh Si Ho, Kenichiro Nakarai, Yuko Ogawa, Takashi Sasaki, and Minoru Morioka: Strength development of cement-treated soils: Effects of water content, carbonation, and pozzolanic reaction under drying curing condition, Construction and Building Materials, Vol.134, pp.703-712, 2017.3.1 https://doi.org/10.1016/j.conbuildmat.2016.12.065
  87. Hikotsugu Hyodo, Ryoichi Sato, Kenji Kawai, and Kenichiro Nakarai: 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), Vol.73, No.1, pp.50-69, 2017.2.20 https://doi.org/10.2208/jscejmcs.73.50
  88. Kenichiro Nakarai, Ryoichi Sato, Yuko Ogawa, and Kenji Kawai: Shear strength of reinforced limestone aggregate concrete beams, ACI Structural Journal, Vol.114, Issue.4, pp.1007-1017, 2017.7.1 https://doi.org/10.14359/51689725
  89. Phuong Trinh Bui，Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai: Long-term pore structure of internally cured fly ash cement paste by an injection of water，Proceedings of JCI annual conference, Vol.39, No.1, pp.109-114，2017.7.12
  90. Takashi Sasaki, Masaaki Watanabe, Minoru Morioka, and Kenichiro Nakarai: Characteristics of modified soil using calcium aluminate and compressive strength change by carbonation, Proceedings of JCI, Vol.39, No.1, pp.2005-2010, 2017.7.12
  91. Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai, Kenji Kawai, and Ryoichi Sato: Internal curing of Class-F fly-ash concrete using high-volume roof-tile waste aggregate, Materials and Structures, Vol.50, 203, 2017.7.21 https://doi.org/10.1617/s11527-017-1073-z
  92. Halwan Alfisa Saifullah, Kenichiro Nakarai, Van Piseth, Nobuhiro Chijiwa, and Koichi Maekawa: Shear creep failures of RC slender beams without shear reinforcement, ACI Structural Journal, Vol.114, Issue.6, pp.1581-1590, 2017.11.1 https://doi.org/10.14359/51700916
  93. Lanh Si Ho, Kenichiro Nakarai, Yuko Ogawa, Takashi Sasaki, and Minoru Morioka: Effect of internal water content on carbonation progress in cement-treated sand and effect of carbonation on compressive strength, Cement and Concrete Composites, Vol.85, pp.9-21, 2017.10.3 https://doi.org/10.1016/j.cemconcomp.2017.09.016
  94. Lanh Si Ho, Kenichiro Nakarai, Myriam Duc, Alain Le Kouby, Abdelhak Maachi, and Takashi Sasaki: Analysis of strength development in cement-treated soils under different curing conditions through microstructural and chemical investigations, Construction and Building Materials, Vol.166, No.30, pp.634-646, 2018.2.22 https://doi.org/10.1016/j.conbuildmat.2018.01.112
  95. Koichiro Shitama, Yukikazu Tsuji, Kenichiro Nakarai, and Chun-He Li: Work done by expansive concrete restrained by eccentric double steel pipe, Cement Science and Concrete Technology, Vol.71, No.1, pp.218-225, 2018.3.30 https://doi.org/10.14250/cement.71.218
  96. Yuki Yokoyama, Yuya Sakai, Kenichiro Nakarai, and Toshiharu Kishi: CHANGE IN SURFACE AIR PERMEABILITY OF CONCRETE WITH DIFFERENT MIX DESIGNS AND CURING, Cement Science and Concrete Technology, Vol.71, No.1, pp.410-417, 2018.3.30 https://doi.org/10.14250/cement.71.410
  97. Kenichiro Nakarai, Koichiro Shitama, Sohei Nishio, Yuya Sasaki, Hiroshi Ueda, and Toshiharu Kishi: Long-term permeability measurements on site-cast concrete box culverts, Construction and Building Materials, Vol.198, pp.777-785, 2019.2.20 https://doi.org/10.1016/j.conbuildmat.2018.11.263
  98. Hoang Viet Nguyen, Kenichiro Nakarai, Akeru Okazaki, Hideaki Karasawa, Yuji Tadokoro, and Masato Tsujino: Applicability of a simplified estimation method to steam-cured expansive concrete, Cement and Concrete Composites, Vol.95, pp. 217-227, 2019.1 https://doi.org/10.1016/j.cemconcomp.2018.11.002
  99. May Huu Nguyen, Kenichiro Nakarai, Yasutaka Kubori, and Sohei Nishio: Validation of simple nondestructive method for evaluation of cover concrete quality, Construction and Building Materials, Vol.201, pp.430-438, 2019.1.3 https://doi.org/10.1016/j.conbuildmat.2018.12.109
  100. Kenichiro Nakarai, Yuji Suzuki, Masanobu Mori, Lanh Si Ho, Akira Arai, and Yusuke Kobayashi: Physicomechanical properties and durability of a new lightweight porous mortar utilizing woodchips, Journal of Cleaner Production, Vol.235, pp.158-165, 2019.10.20 https://doi.org/10.1016/j.jclepro.2019.06.244
  101. May Huu Nguyen, Kenichiro Nakarai, and Sohei Nishio: Durability index for quality classification of cover concrete based on water intentional spraying tests, Cement and Concrete Composites, Vol.104, 103355, 2019.6.26 https://doi.org/10.1016/j.cemconcomp.2019.103355
  102. Masayuki Yamamoto, Chieri Shimose, and Kenichiro Nakarai: Relationship between chloride diffusivity and air permeability of existing concrete structures, Proceedings of the Japan Concrete Institute, Vol.41, No.1, pp.623-628, 2019.7
  103. Yasutaka Kubori and Kenichiro Nakarai: Effect of sample preparation in water absorption tests of concrete, Proceedings of the Japan Concrete Institute, Vol.41, No.1, pp.635-640, 2019.7
  104. Masayuki Yamamoto, Masaaki Fuse, and Kenichiro Nakarai: Relationship between Chloride Ion Penetration and Apparent Deterioration Class in Existing Concrete Structures, Proceedings of the Concrete Structure Scenarios, Vol.19, pp.605-610, 201910
  105. Hidefumi Izuo, Kenichiro Nakarai, Masahiko Yoshida, and Masato Kiyota: Influence of water content of surrounding soil on surface strength of cement-treated soil, Japanese Geotechnical Journal, Vol.14, No.4, pp.307-320, 2019.12.25 https://doi.org/10.3208/jgs.14.307
  106. May Huu Nguyen, Kenichiro Nakarai, Yuya Kai, and Sohei Nishio: Early evaluation of cover concrete quality utilizing water intentional spray tests, Construction and Building Materials, Vol.231, 117144, 2019.10.15 https://doi.org/10.1016/j.conbuildmat.2019.117144
  107. Halwan Alfisa Saifullah, Kenichiro Nakarai, Nobuhiro Chijiwa, Koichi Maekawa, and Stefanus Kristiawan: Influence of Longitudinal Reinforcement Ratio on Shear Strength of RC Slender Beam Under Different Loading Rates, Applied Mechanics and Materials, Vol.897 pp91-97, 2020.4 https://doi.org/10.4028/www.scientific.net/AMM.897.91
  108. Xiangen Wang, Halwan Alfisa Saifullah, Hiroki Nishikawa, and Kenichiro Nakarai: Effect of water–cement ratio, aggregate type, and curing temperature on the fracture energy of concrete, Construction and Building Materials, Vol.259, 119646, 2020.6.23 https://doi.org/10.1016/j.conbuildmat.2020.119646
  109. May Huu Nguyen, Kenichiro Nakarai, and Roberto Torrent: Service life prediction of steam-cured concrete utilizing in-situ air permeability measurements, Cement and Concrete Composites, Vol.114, 103747, 2020.7.28 https://doi.org/10.1016/j.cemconcomp.2020.103747
  110. Hoang Viet Nguyen, Kenichiro Nakarai, Kien Hoang Pham, Saeko Kajita, and Takahiro Sagawa: Effects of slag type and curing method on the performance of expansive concrete, Construction and Building Materials, Vol 262, 120422, 2020.9.2 https://doi.org/10.1016/j.conbuildmat.2020.120422
  111. Lanh Si Ho, Kenichiro Nakarai, Kenta Eguchi, and Yuko Ogawa: Difference in Strength Development between Cement-Treated Sand and Mortar with Various Cement Types and Curing Temperatures, Materials, Vol.13, No.21, 4999, 2020.11.6 https://doi.org/10.3390/ma13214999
  112. Verónica Bueno, Kenichiro Nakarai, May Huu Nguyen, Roberto Juan Torrent, and Isao Ujike: Effect of surface moisture on air-permeability kT and its correction, Materials and Structures, Vol.54, 89, 2021.4.1 https://doi.org/10.1617/s11527-021-01666-1
  113. Kenichiro Nakarai, Masahito Shibata, Hiroyuki Sakamoto, Hitoshi Owada and Georg Kosakowski: Calcite precipitation at cement–bentonite interface. Part 1: Effect of carbonate admixture in bentonite, Journal of Advanced Concrete Technology, Vol.19, No.5, pp.433-446, 2021.5.25 https://doi.org/10.3151/jact.19.433
  114. Kenichiro Nakarai, Masaki Watanabe, Kiyoshi Koibuchi and Georg Kosakowski: Calcite Precipitation at Cement–Bentonite Interface. Part 2: Acceleration of Transport by an Electrical Gradient, Journal of Advanced Concrete Technology, Vol.19, No.5, pp.447-461, 2021.5.25 https://doi.org/10.3151/jact.19.447
  115. Yuki Yokoyama, Kenichiro Nakarai, Yuya Sakai, and Toshiharu Kishi: Influences of moisture change and pore structure alteration on transport properties of concrete cover, Cement and Concrete Composites, Vol.122, 104090, 2021.5.24 https://doi.org/10.1016/j.cemconcomp.2021.104090
  116. Yuki Yokoyama, Kenichiro Nakarai, Toshiharu Kishi: Correlation between penetration depths measured by spraying AgNO3 solution and results of non-destructive test, ，Proceedings of JCI annual conference, Vol.43, No.1, pp.407-412，2017.7
  117. Do Bui Cong, Kenichiro Nakarai, Hiroki Nishikawa: Effects of early-age thermal microcracking on material properties and structural performance of limestone aggregate concrete, Cement and Concrete Composites, Vol.124, 104267, 2021.9.22 https://doi.org/10.1016/j.cemconcomp.2021.104267
  118. Masanobu Mori, Ikuto Hiratsuka, Hideyuki Itabashi, Kenichiro Nakarai, Toru Inui: Woodchip-mixing porous mortar’s adsorption of cesium in aqueous media, Journal of Material Cycles and Waste Management, 2022.4.11 https://doi.org/10.1007/s10163-022-01397-7
  119. Kenichiro Nakarai, Kazuhito Niwase, Masanori Miyamoto, Tai Sasaki: Low-Level Radioactive Waste Disposal in Japan and Role of Cementitious Materials, Journal of Advanced Concrete Technology, Vol.20, No.5, p.359-374, 2022.5.16 https://doi.org/10.3151/jact.20.359
  120. May Huu Nguyen, Sohei Nishio, and Kenichiro Nakarai: Effect of temperature on nondestructive measurements for air permeability and water sorptivity of cover concrete, Construction and Building Materials, Vol.334, 127361, 2022.6.6
    https://doi.org/10.1016/j.conbuildmat.2022.127361
  121. Hidefumi Izuo, Kenichiro Nakarai, Dmitrii A. Kulik: Twenty-two-year investigation of strength development and surface deterioration of cement-treated clay in an in-situ field test, Cement and Concrete Composites, Vol. 134, 104783, 2022.11
    https://doi.org/10.1016/j.cemconcomp.2022.104783
  122. May Huu Nguyen, Kenichiro Nakarai, Roberto Juan Torrent, Vero´nica Bueno: Concrete carbonation prediction based on air-permeability tests with moisture compensation, Materials and Structures, Vol.56, No.3, 2023.
    http://dx.doi.org/10.1617/s11527-022-02081-w

  123. Adhitya Leonard Wijaya, Saeko Kajita, Yuji Tadokoro, Masayuki Uchino and Kenichiro Nakarai: Strength and air permeability of steam-cured expansive concrete: effects of chemical prestress, water-to-binder ratio, and curing condition, Materials ans Structures, 2023.8

    https://doi.org/10.1617/s11527-023-02223-8

  124. Duy Dung Khuat, Shota Yamanaka, May Huu Nguyen, Kenichiro Nakarai: Combined effect of internal curing and hydration promotion on concrete performances: Contributions of roof-tile waste aggregate and chloride-based accelerator, Construction and Building Materials, Vol.411, 134527, 2024.1.12

    https://doi.org/10.1016/j.conbuildmat.2023.134527

International Conference Presentations

  1. Kenichiro Nakarai, Masahiro Shinoda, Kenji Watanabe, Masaru Tateyama, Taro Uchimura, and Fumio Tatsuoka: Seismic stability of geosynthetic-reinforced soil bridge abutment, International Conference on Geosynthetics, 7th, Nice, France, pp.249-252, 2002.9.22-27
  2. Kenichiro Nakarai and Tetsuya Ishida: Modeling of Time-dependent Material Properties of Cemented Soil based on Thermodynamic Approach, The Ninth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-9), Bali, Indonesia, 2003.12.16-18
  3. Koichi Maekawa, Tetsuya Ishida, and Nakarai, K., Computational Platform for Life-cycle Assessment of RC/PC Infrastructures, International Conference on Construction IT, Beijing, China, 2004.8.15-17
  4. Tetsuya Ishida, Nakarai, K., Kukrit Toongoenthong, and Koichi Maekawa: Multi-scale Modeling for Corroded Reinforced Concrete and Soil Foundation, World Conference on Computational Mechanics VI, Beijing, China, 2004.9.5-10
  5. Kenichiro Nakarai, Naoya Nagao, Shunichi Igarashi, and Koichi Maekawa: Damage Analysis of RC Members with Ruptured Main Reinforcement, The First International Conference of Asian Concrete Federation, Chiang Mai, Thailand, 2004.10
  6. Kenichiro Nakarai, Tetsuya Ishida, Toshiharu Kishi, and Koichi Maekawa: Enhanced Modeling of Microstructure Formation of Cement Hydrates Coupled with Thermodynamics, Cementitious Materials as Model Porous Media: Nanostructure and Transport Processes, Monte Verità, Switzerland, 2005.7
  7. Kenichiro Nakarai and Koichi Maekawa: Capacity Assessment of RC Members and Knee Joints with Ruptured Main Reinforcement, Construction Materials, Proceedings of ConMat ’05 and Mindess Symposium, Vancouver, Canada, 2005.8
  8. Tetsuya Ishida, Koichi Maekawa, and Kenichiro Nakarai: Multi-Scale Modeling of Concrete Performance, COE Workshop on Material Science in 21st century for the construction industry – Durability, repair and recycling of concrete structures, Hokkaido University, Sapporo, Japan, 2005.8.
  9. Koichi Maekawa, Tetsuya Ishida, and Keinchiro Nakarai: Chemo-Physical and Mechanical Approach to Performance Assessment of Structural Concrete and Soil Foundation, Transport Properties and Concrete Quality Workshop, Arizona, The United States, 2005.10
  10. Tetsuya Ishida, Koichi Maekawa, and Kenichiro Nakarai: A Unified Approach to Performance Evaluation of Existing Concrete Structure – Integration of a Numerical Simulation Scheme and Durability Indicators, International RILEM Workshop on Performance Based Evaluation and Indicators for Concrete Durability, Madrid, Spain, 2006.3
  11. Kenichiro Nakarai, Tetsuya Ishida, and Koichi Maekawa: Multi-Scale Analysis of Calcium Leaching from Cement coupled with Pore Structure Formation, Seventh CANMET/ACI International Conference on Durability of Concrete, Montreal, Canada, 2006.6
  12. Koichi Maekawa, Tetsuya Ishida, and Kenichiro Nakarai: Multi-Chemo Physical Approach to Life-Cycle Assessment of Structural Concrete, The Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), Bangkok, Thailand, Vol.1, pp.81-90, 2006.8.3-5
  13. Hung M. Dinh, Kenichiro Nakarai, and Koichi Maekawa: Evaluation on the Stiffness of RC Member with Consideration to Moisture Transport and Change in Volume, The Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), Bangkok, Thailand, Vol.2, pp.217-222, 2006.8.3-5
  14. Yohei Akioka, Kenichiro Nakarai, and Tetsuya Ishida: Multi-Scale Analysis of Calcium Leaching from Cemented Soil based on Thermodynamic Approach, The Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), Bangkok, Thailand, Vol.6, pp.455-460, 2006.8.3-5
  15. Kenichiro Nakarai, Tatsuya Usui, and Tetsuya Ishida: Performance Evaluation of Engineered Barrier based on Thermodynamic Modeling of Coupled Cementitious Material and Bentonite, The Tenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), Bangkok, Thailand, Vol.6, pp.773-778, 2006.8.3-5
  16. Kenichiro Nakarai, Tatsuya Usui, and Tetsuya Ishida: Numerical Evaluation of Calcium Leaching from Cementitious Materials in contact with Bentonite, The International Symposium on Social Management Systems (ISMS2007), Yichang, China, 2007.3.9-11
  17. Yukikazu Tsuji, Kenichiro Nakarai, and Li Chunhe: International Technical Standards in the Field of Concrete, The International Symposium on Social Management Systems (ISMS2007), Yichang, China, 2007.3.9-11
  18. Masaki Watnabae, Kenichiro Nakarai, Takafumi Sugiyama, Naomi Tomizawa, and Yukikazu Tsuji: Effect of dry density of bentonite in contact with concrete on its alteration after electrical migration, 32th Conference on Our World in Concrete & Structures, Singapore, pp. 467-482, 2007.8.29
  19. Kenichiro Nakarai and Tetsuya Ishida: Computational approach to shrinkage of fly ash concrete based on integrated modeling of moisture state and pore structure formation, International Seminar on Durability and Lifecycle Evaluation of Concrete Structures, Higashi-Hiroshima, Japan, 2007.9
  20. Kenichiro Nakarai, Tetsuya Ishida, Koichi Maekawa, and Toshiharu Kishi: Modeling of calcium leaching from cement hydrates coupled with microstructure formation, 2nd international conference on concrete modeling (ConMod08), Delft, Netherlands, 2008.5.27
  21. Koichi Maekawa, Kenichiro Nakarai, and Tetsuya Ishida: Modeling of Calcium Leaching from Cemented Composites Coupled with Micro-Pore Structural Reform (Keynote Lecture), 8th World Congress on Computational Mechanics (WCCM8) and 5th. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008), Venice, Italy, 2008.7.1
  22. Kenichiro Nakarai and Tetsuya Ishida: Numerical evaluation of influence of pozzolanic materials on shrinkage base on moisture state and pore structure, 8th International Conference on Creep, Shrinkage and Durability of Concrete and Concrete Structures (CONCREEP8), Ise-Shima, Japan, 2008.9.30
  23. Ryoichi Sato., Takumi Shimomura, Ippei Maruyama, and Kenichiro Nakarai: Durability mechanics of concrete and concrete structures – re-definition and a new approach, Committee Reports of JCI, 8th International Conference on Creep, Shrinkage and Durability of Concrete and Concrete Structures (CONCREEP8), Ise-Shima, Japan, 2008.10.1
  24. Kenichiro Nakarai, Masaki Watanabe, Takafumi Sugiyama, and Yukikazu Tsuji: Evaluation of long-term durability of engineered barrier system of bentonite and cementitious materials by migration technique, 2nd International Workshop: Mechanisms and modelling of waste/cement interactions (Cement08), Le Croisic, France, 2008.10.14
  25. Takeshi Torichigai, Kousuke Yokozeki, Tetsuya Ishida, Kenichiro Nakarai, and Daisuke Sugiyama, Comparative study using some advanced simulation methods for leaching of cementitious materials over thousands of years, 2nd International Workshop: Mechanisms and modelling of waste/cement interactions (Cement08), Le Croisic, France, 2008.10.16
  26. Kenichiro Nakarai, Masaki Watanabe, and Kiyoshi Koibuchi: Evaluation of long-term durability of concrete contact with bentonite mixed with NaHCO3 by electrical migration technique, International RILEM Workshop on Long-Term Performance of Cementitious Barriers and Reinforced Concrete in Nuclear Power Plants and Waste Management (NUCPERF2009), Cadarache, France, 2009.4.1
  27. Kenichiro Nakarai and Tetsuya Ishida: Numerical evaluation of cement/bentonite interaction in engineered barrier system, European Geosciences Union General Assembly 2009 (EGU2009), Vienna, Austria, 2009.4.22
  28. Kenichiro Nakarai, Masaki Watanabe, Kiyoshi Koibuchi, and Yukikazu Tsuji: Evaluation of long-term durability of concrete contact with bentonite by electrical migration technique for Nuclear Waste Management, The Fred Glasser Cement Science Symposium, Aberdeen, Scotland, UK, 2009.6.18
  29. Kentaro Suhara, Masanobu Ashida, Kenichiro Nakarai, and Yukikazu Tsuji: Mechanical Behaviors and Evaluation of Expansive Concrete Applied to Reinforced Concrete Member, 4th International Conference on Construction Materials: Performance, Innovations and Structural Implications, Nagoya, Japan, pp.471-478, 2009.8.24-26
  30. Hideki Fujita, Hidetoshi Kurauchi, Kenichiro Nakarai, and Yukikazu Tsuji: Physical Properties of Mortar and Concrete Using Low-Alkalinity Cement Based on Sulphoaluminate Clinker, Proceedings of 7th International Symposium of Cement & Concrete, Jinan, China, 2010.5.11
  31. Kenichiro Nakarai, George Kosakowski, Berner Urs, and Hitoshi Owada: Evolution of cement-bentonite interfaces: Experiments and models, ModelCare 2011, Leipzig, Germany, 2011.9.19
  32. Yuki Yokoyama and Kenichiro Nakarai: Swelling deformation of the bentonite mixed with silica fume or sodium carbonate in calcium hydroxide solution, Second International Conference on Geotechnique, Construction Materials and Environment, Kuala Lumpur, Malaysia, pp.172-175, 2012.11.14-16
  33. Kenichiro Nakarai and Tomomi Yoshida: Effect of carbonation on strength of cement treated sand, Second International Conference on Geotechnique, Construction Materials and Environment, Kuala Lumpur, Malaysia, pp. 672-675, 2012.11
  34. Masumi Shinozaki and Kenichiro Nakarai: Evaporative cooling effect of porous concrete with recycled aggregate, Proceedings of the First International Conference on Concrete Sustainability, Tokyo, Japan, pp.233-238, 2013.5.27
  35. Kazumasa Kawamura, Yuko Ogawa, Macharia Martin Mwangi, Kenichiro Nakarai and Ryoichi Sato: Properties of concrete containing a molten slag as fine aggregate, Proceedings of the First International Conference on Concrete Sustainability, Tokyo, pp.252-257, 2013.5.27
  36. Kenichiro Nakarai, Kazumasa Kawamura, Yuko Ogawa and Ryoichi Sato: Structural Performance of RC Beams Containing a Molten Slag as Fine Aggregate, Proceedings of the First International Conference on Concrete Sustainability, Tokyo, Japan, pp.760-765, 2013.5.29
  37. Ryoichi Sato, Kenichiro Nakarai, Yuko Ogawa and Kenji Kawai: An Effective Flexural Stiffness Equation for Long Term Deflection of Prestressed Concrete with and without Cracks, Proceedings of the ninth international Conference on Creep, Shrinkage and Durability Mechanics of Concrete, Massachusetts, the United States, pp.451-458, 2013.9
  38. Kenichiro Nakarai and Yuki Yokoyama: Effect of pozzolan on cement-bentonite interaction in nuclear waste management, Proceedings of the Third International Conference on Sustainable Construction Materials and Technologies (SCMT3), Kyoto, Japan, 7p., W1-1K-3, 2013.8.21
  39. Masashi Ito, Kenichiro Nakarai, Akihiko Hayashi, and Kenji Kawai: Behavior of Penetration and Leaching of Cesium in Mortar Having Various Fine Aggregates and Moisture Content, Proceedings of Third International Conference on Geotechnique, Construction Materials and Environment, Nagoya, Japan. pp.394-399, 2013.11.15.
  40. Yuki Yokoyama and Kenichiro Nakarai: Swelling Deformation of Bentonite Mixed with Inorganic Materials in Alkaline Solution, Proceedings of Third International Conference on Geotechnique, Construction Materials and Environment, Nagoya, Japan, 2013.11
  41. Kenichiro Nakarai, Shota Matsushita, and Shigemitsu Morito: Effect of volume change of concrete on shear capacity of RC beam and its evaluation, Fourth international fib congress 2014, Mumbai, India, 2014.2.11
  42. Naomi Sasaki, Kaoru Kobayashi, and Kenichiro Nakarai: A new repair method of honeycombing by resin infusion without removing attached aggregates, Fourth international fib congress 2014, Mumbai, India, 2014.2.12
  43. Kenichiro Nakarai: Sustainable construction work based on prediction and verification considering interaction in total system, International workshop on concrete sustainability, Takamatsu, Japan, 2014.3.7
  44. Kenichiro Nakarai, Kazumasa Kawamura, Yuko Ogawa and Ryoichi Sato: Performance of Reinforced Concrete Beams Containing a Molten Slag as Fine Aggregate, Hybrid 2014 Exploring the Potential of Hybrid Structures for Sustainable Construction, Fribourg, Switzerland, 2014.6.23.
  45. Kenichiro Nakarai, Masahito Shibata, and Hiroyuki Sakamoto: Calcium leaching of cement paste in contact with bentonite mixed with carbonate for engineered barrier system, Fourth International Symposium on Life-Cycle Civil Engineering (IALCCE2014), Tokyo, Japan, 2014.10.19
  46. Kenichiro Nakarai, Isao Kurashige, and Toshiharu Kishi: Covercrete quality and durability verification of concrete structures, International Conference on the Regeneration and Conservation of Concrete Structures (RCCS), Nagasaki, Japan, 2015.7.2
  47. Kenichiro Nakarai: Activity of JSCE TC 335 and subsequent deployment, International Workshop on Concrete Durability, Nagasaki, Japan, 2015.7.4
  48. Kenichiro Nakarai, Ryoichi Sato, Yuko Ogawa, and Kenji Kawai: Effect of lime stone aggregate on drying shrinkage and shear strength of RC beam, Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP-10), Vienna, Austria, 2015.9.21
  49. Van Piseth, Kenichiro Nakarai, Nobuhiro Chijiwa, and Koichi Maekawa: Experimental Study on Effects of Loading Rate on the Shear Performance of RC Beam, Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP-10), Vienna, Austria, 2015.9.22
  50. Yuko Ogawa, Shoichi Kameta, Ryoichi Sato, Kenichiro Nakarai, and Kenji Kawai: Experimental studies on effective creep coefficient in prestressed concrete girder, Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP-10), Vienna, Austria, 2015.9.21
  51. Nobuhiro Chijiwa, Xiaoxu Zhu, Hiroki Ohno, Shigeru Tanabe, Kenichiro Nakarai, and Koichi Maekawa: Delayed shear crack formation of shallow RC box culverts in service, Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP-10), Vienna, Austria, 2015.9.22
  52. Kenichiro Nakarai: Effect of volumetric changes of concrete and loading rates on shear strength of RC beams, The 14th International Conference on Civil and Environmental Engineering (ICCEE 2015), Taoyuan, Taiwan 2015.10.9
  53. Yuta Mori, Shota Yamanaka, Kenichiro Nakarai, and Sohei Nishio: Comparative Study of Permeability Tests of Covercrete, The 14th International Conference on Civil and Environmental Engineering (ICCEE 2015), Taoyuan, Taiwan, 2015.10.9
  54. Nao Kawai, Kenichiro Nakarai, Yuko Ogawa, and Ryoichi Sato: Effect of limestone aggregate on shear strength of RC beams, The 14th International Conference on Civil and Environmental Engineering (ICCEE 2015), Taoyuan, Taiwan, 2015.10
  55. Kenichiro Nakarai, Nao Kawai, Ryoichi Sato, Yuko Ogawa, and Kenji Kawai: Effect of lime stone aggregate on properties of concrete and reinforced concrete structure, The Third Scientific Conference in Transport Technology, Hanoi, Vietnam, 2015.10.17
  56. Lanh Si Ho, Kenichiro Nakarai, Takashi Sasaki, Masaaki Watanabe, and Minoru Morioka: Effect of carbonation under drying condition on strength development of cement-treated soil, The Third Scientific Conference in Transport Technology, Hanoi, Vietnam, 2015.10.17
  57. Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai: Effect of Internal Activation on Pozzolanic Reaction in Fly Ash Cement Paste by Using Sodium Hydroxide Solution, Proceedings of the Fourteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-14), Ho Chi Minh City, Vietnam, pp.1192-1199, 2016.1.6-8
  58. Yuko Ogawa, Kenichiro Nakarai, Kenji Kawai, and Ryoichi Sato: An Experimental Study on the Effect of Internal Curing with Roof Tile Waste on Relative Humidity of Fly Ash Concrete, Proceedings of the Fourteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-14), Ho Chi Minh City, Vietnam, pp.1215-1222, 2016.1.6-8
  59. Lanh Si Ho, Kenichiro Nakarai, Takashi Sasaki, Masaaki Watanabe, and Minoru Morioka: Effects of Carbonation and Water Content on Strength Development of Cement-Treated Soil, Proceedings of the Fourteenth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-14), Ho Chi Minh City, Vietnam, pp.1026-1032, 2016.1.6-8
  60. Phuong Trinh Bui, Kazuki Ootaishi, Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai: Effect of Internal Alkali Activation on Long-Term Pozzolanic Reaction of Fly Ash in Cement Paste, Proceedings of Second International Conference on Concrete Sustainability (ICCS16), Madrid, Spain, pp.1215-1226, 2016.6.13
  61. Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai, and Kenji Kawai: Effect of Injection of NaOH Solution on Pozzolanic and Hydration Reactions in Low-Calcium Fly Ash Cement Paste, Proceedings of the Fourth International Conference on Sustainable Construction Materials and Technologies (SCMT4), Las Vegas, Nevada, pp.601-610, 2016.8.7
  62. Lanh Si Ho, Kenichiro Nakarai, Takashi Sasaki, Masaaki Watanabe, and Minoru Morioka, Contribution of carbonation under drying curing condition to strength development of cement-treated soils, The 11th fib International PhD Symposium in Civil Engineering, Tokyo, Japan, 2016.8.29
  63. Halwan Alfisa Saifullah, Kenichiro Nakarai, Van Piseth, Nobuhiro Chijiwa and Koichi Maekawa: Effect of loading conditions on shear creep failure of RC beams, The 11th fib International PhD Symposium in Civil Engineering, Tokyo, Japan, 2016.8.31
  64. Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai, Kenji Kawai, and R. Sato: Effects of internal curing with high-volume roof tile waste on compressive strength and porosity of fly ash concrete, The 7th International Conference of Asian Concrete Federation (ACF2016), Hanoi, Vietnam, 2016.10.30
  65. Yuh Sasaki, Kenichiro Nakarai, Hideaki Karasawa, Yuji Tadokoro, and Masato Tsujino: Application of a simple evaluation method for steam cured expansive concrete, The 7th International Conference of Asian Concrete Federation (ACF2016), Hanoi, Vietnam, 2016.10.30
  66. Phuong Trinh Bui, Yuko Ogawa, Kenichiro Nakarai and Kenji Kawai: An experimental investigation of hardness and pore structure of low-calcium fly ash cement paste internally alkali activated using roof tile waste aggregate, Proceedings of 14th International Conference on Durability of Building Materials and Components, 12p., Ghent, Belgium, 2017.5.29-31.
  67. Kenichiro Nakarai: Concrete Engineering and its Contribution to Nuclear Waste Management, Research Conference on Cementitious Composites in Decommissioning and Waste Management (RCWM2017), Tomioka, Fukushima, Japan, 2017.6.20
  68. Xiangen Wang, Hiroki Nishikawa, and Kenichiro Nakarai: Fracture Energy of Concrete Subjected to Elevated Temperature at Early Ages, The 16th International Conference on Civil and Environmental Engineering (ICCEE2017), Tainan City, Taiwan, 2017.11.13
  69. Akeru Okazaki, Kenichiro Nakarai, Hideaki Karasawa, Yuji Tadokoro, and Masato Tsujino: Temperature influence analysis on performance evaluation of expansive concrete under steam curing, The 16th International Conference on Civil and Environmental Engineering (ICCEE2017), Tainan City, Taiwan, 2017.11.13
  70. Yasutaka Kubori and Kenichiro Nakarai: Influence of curing condition on water absorption and chloride penetration into concrete, international conference on civil and environmental engineering, The 16th International Conference on Civil and Environmental Engineering (ICCEE2017), Tainan City, Taiwan, 2017.11.14
  71. Hiroki Nishikawa, Yu Sasaki, Xiangen Wang and Kenichiro Nakarai: Effects of high temperature history at early age and drying on shear strength of RC beams with limestone aggregate, The 16th International Conference on Civil and Environmental Engineering (ICCEE2017), Tainan City, Taiwan, 2017.11.14
  72. Lanh Si Ho, Kenichiro Nakarai, Kenta Eguchi, Takashi Sasaki, and Minoru Morioka: Effect of cement types on strength development of cement-treated soils, Proceeding of The Seventh International Conference on Geotechnique, Construction Materials and Environment, GEOMATE 2017, Mie, Japan, pp. 212-217, 2017.11.22
  73. Kenichiro Nakarai: Shear strength of reinforced concrete beams: Effects of concrete volumetric change and limestone aggregate, 4th International Conference on Rehabilitation and Maintenance in Civil Engineering (ICRMCE), Solo, Indonesia, 2018.7.11
  74. Halwan Alfisa Saifullah, Kenichiro Nakarai, Nobuhiro Chijiwa, and Koichi Maekawa: Analytical Study on Creep Shear failures of RC Slender Beams Without Web Reinforcement, 4th International Conference on Rehabilitation and Maintenance in Civil Engineering (ICRMCE), Solo, Indonesia, 2018.7.12.
  75. Lanh Si Ho, Kenichiro Nakarai, Kenta Eguchi, Takashi Sasaki, and Minoru Morioka: Strength Development of Cement-Treated Sand Using Different Cement Types Cured at Different Temperatures, 4th International Conference on Rehabilitation and Maintenance in Civil Engineering (ICRMCE), Solo, Indonesia, 2018.7.12.
  76. Asuka Mizobe, Kenichiro Nakarai, Hiroki Nishikawa, and Halwan Alfisa Saifullah: Effect of shear reinforcement on shear strength of RC beam with Limestone aggregate, The 17th International Conference on Civil and Environmental Engineering (ICCEE2018), Dalian, China, 2018.10.15
  77. Saeko Kajita, Akeru Okazaki, Hoang Viet Nguyen, Kenichiro Nakarai, Hideaki Karasawa, and Yuji Tadokoro: Performance evaluation of expansive concrete members affected by drying, The 17th International Conference on Civil and Environmental Engineering (ICCEE2018), Dalian, China, 2018.10.15
  78. May Huu Nguyen, Kenichiro Nakarai, and Saeko Kajita: Air Permeability of Precast Concrete Box Culvert Applying Steam Curing Condition, The International Conference on Sustainable Civil Engineering and Architecture (ICSCEA 2019), Ho Chi Minh, Vietnam, pp 425-430, 2019.10.25
  79. Yuka Yoshizumi, Kenichiro Nakarai, May Huu Nguyen, Norie Tada, and Masayuki Yamamoto: Chloride Penetration Test of Concrete Simulating Deicing Salt Attack, The International Conference on Sustainable Civil Engineering and Architecture (ICSCEA 2019), Ho Chi Minh, Vietnam, pp 431-436, 2019.10.25
  80. Kengo Morita, Kenichiro Nakarai, Lanh Si Ho, and Takashi Sasaki: Fundamental study on durability of cement-treated clay in contact with surrounding clay, ICCEE2019, Pukyong National University, Pukyon, Korea, 2019.10.28
  81. May Huu Nguyen, Kenichiro Nakarai, and Saeko Kajita: Air permeability of cover concrete quality of precast box culverts affected by casting direction, The 5th International Conference on Geotechnics, Civil Engineering Works and Structures, Hanoi, Vietnam, pp.501-506, 2019.11.1
  82. Le Anh Van, Kenichiro Nakarai, Nguyen Huu May, Yasutaka Kubori, Toshikazu Matsuyama, and Hajime Kawakane: Air permeability coefficients of expansive concrete confined by rebars, The 5th International Conference on Geotechnics, Civil Engineering Works and Structures, Hanoi, Vietnam, pp.561-566, 2019.11.1
  83. La Vanny, Kenichiro Nakarai, Halwan Alfisa Saifullah, and Asuka Mizobe: Experimental investigation of loading rate effects on the shear capacity of reinforced concrete deep beams, The 5th International Conference on Geotechnics, Civil Engineering Works and Structures, Hanoi, Vietnam, pp.573-578, 2019.11.1
  84. Kenichiro Nakarai: Japanese durability design and a new index for quality classification of cover concrete, Present situation and future challenges of cementitious materials in Japan and France, Ifsttar, Marne-la-Vallée, France, 2019.12.10
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