Alumni

Former Staff

Secretary Michiko Shigeta (2017.7-2019.5)
Technical Assistant May Huu Nguyen (2020.10-2021.3)
JSPS Postdoctoral Researcher Yuki Yokoyama (2019.10-2021.6)
Assistant Professor Ho Si Lanh (2019.4-2022.3)
Secretary Kaori Minami (2019.5-2022.7)

Graduates from Doctoral Program

Dr. Naomi Sasaki

Dr. Naomi Sasaki obtained her doctoral degree in March 2015. The title of her dissertation was “Development of resin injection repair method of honeycombing in concrete structures.”

• Naomi Sasaki, Kaoru Kobayashi, Kenichiro Nakarai: A new repair method of honeycombing by resin infusion without removing attached aggregates, Proceedings of the fourth international fib congress, No.24, pp.248-257, 2014.2
• Naomi Sasaki, Kaoru Kobayashi, Kenichiro Nakarai: Proposal of repair method of honeycombing by resin injection and evaluation of strengths of repaired materials, Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures), Vol.70, Issue 2, pp.252-271, 2014.6 (in Japanese)
• Naomi Sasaki, Kaoru Kobayashi, Kenichiro Nakarai: Tension-stiffening effect of RC members repaired by resin, Journal of JCI Annual Convention, Vol.36, No.2, pp.397-402, 2014.7 (in Japanese)
• Naomi Sasaki, Kaoru Kobayashi, 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 (in Japanese)

Dr. Lanh Si Ho

Dr. Lanh Si Ho from Vietnam studied supported by a MEXT scholarship and obtained his doctoral degree in March 2018. The title of his dissertation was “Analysis of strength development mechanism of cement-treated soils under different curing conditions through chemical and microstructural investigations.”

• 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
• 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
• 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, pp.634-646, 2018.2.22 https://doi.org/10.1016/j.conbuildmat.2018.01.112

Dr. Halwan Alfisa Saifullah

Dr. Halwan Alfisa Saifullah from Indonesia studied supported by a MEXT scholarship and obtained his doctoral degree in September 2018. The title of his dissertation was “Shear creep failures of reinforced concrete beams without shear reinforcement.”

• 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
• 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, No.6, pp.1581-1590, 2017.11.1 https://doi.org/10.14359/51700916

Dr. Hoang Viet Nguyen

Dr. Hoang Viet Nguyen from Vietnam studied supported by the PEACE program of Hiroshima University with a JASSO scholarship and obtained his doctoral degree in September 2020. The title of his dissertation was “Performance assessment of expansive slag concrete under different curing conditions.”

• 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
• 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

Dr. May Huu Nguyen

Dr. May Huu Nguyen from Vietnam studied supported by a MEXT scholarship and obtained his doctoral degree in September 2020. The title of his dissertation was “Utilization of a simplified non-destructive test with water spraying for cover concrete quality inspection.”

• 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
• 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
• 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
• May Huu Nguyen, Kenichiro Nakarai, Robetor Torrent, Service life prediction of steam cured concrete utilizing in-situ air permeability. Cement and Concrete Composites, Vol.114,103747, 2020.7.28 https://doi.org/10.1016/j.cemconcomp.2020.103747

Dr. Hidefumi Izuo

Dr. Hidefumi Izuo from Japan Cement Association obtained his doctoral degree in November 2022. The title of his dissertation was “Long-term strength development and surface deterioration of volcanic cohesive soil treated with cement .”

• Hidefumi Izuo, Kenichiro Nakarai, Masahiko Yoshida, Masato Kiyota, Influence of water content of surrounding soil on surface strength of cement-treated soil, Japanese Geotechnical Journal, Vol. 14, Issue 4, pp.307-320, 2019.12 https://doi.org/10.3208/jgs.14.307
  
• 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