Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
Ryohei Ishikura Last modified date:2024.04.18

Associate Professor / Geotechnical Engineering laboratory / Faculty of Engineering


Papers
1. R. Ishikura, N. Yasufuku, A. Alowaisy, T. Kono and T. Fujisawa, Deterioration characteristics of cement stabilized soils with different fine fraction content under seawater environment, Proceedings of the 9th International Congress on Environmental Geotechnics(ICEG), 39-48, 2023.06.
2. 石藏良平,神山惇,工藤宗治,前田秀喜,田中聡,井上徹郎, 九州北部地域で発生した河川・ため池被害と筑後川堤防基礎地盤の被災分析, 地盤工学会災害調査論文報告集, 1, 1, 156-168, 2023.04.
3. M.Gobin, N. Yasufuku, G.Liu, M.Watanabe, R.ISHIKURA, Small strain stiffness, microstructure and other characteristics of an allophanic volcanic ash, Engineering Geology, https://doi.org/10.1016/j.enggeo.2022.106967, 313(106967), 2023.02.
4. Yuichiro Ito, Zentaro Furukawa, Adel Alowaisy, Noriyuki Yasufuku, Ryohei Ishikura, An analytical study on enhancing water preservation utilizing the capillary barrier system in drylands for cultivation, Journal of Arid Land Studies, 32, 101-105, 2022.12.
5. Jumana Hussary, Adel Alowaisy, Noriyuki Yasufuku, Ryohei Ishikura, Monther Abdelhadi, Drying front dynamics during the falling rate stage of evaporation from homogeneous sandy soil profiles, Journal of Arid Land Studies, 32, 177-180, 2022.12.
6. Adel Alowaisy, Jumana Hussary, Noriyuki Yasufuku, Ryohei Ishikura, Monther Abdelhadi, Analysis of the surface layer properties influence on the actual evaporation and efficiency of the soil-cover system to combat desertification, Journal of Arid Land Studies, 32, 171-175, 2022.12.
7. Ryohei ISHIKURA, Riku KUSANO, Noriyuki YASUFUKU and Shinichiro TSUJI, Experimental study on optimizing mattress width for bearing capacity characteristics of mattress reinforced ground, Proceedings of 2022 GeoAsia7 Conference, ID-R-006, 2022.11.
8. Meilani Adriyati, Noriyuki Yasufuku, Ryohei Ishikura1 and Ahmad Rifa’i, Optimizing modified large-scale consolidation testing for describing smear zone caused by mandrel-driven prefabricated vertical drain, Proceedings of 2022 GeoAsia7 Conference, ID-D-005, 2022.11.
9. M.A.Putera, N.Yasufuku, A.Alowaisy, R.Ishikura, J.Hussary, A.Rifa’i, Evaluating the Small-Strain Mechanical Properties of Cement-Treated Clayey Soils Based on the Confining Pressure, International Journal of Civil and Environmental Engineering, 16, 10, 269-277, 2022.10.
10. M.A.Putera, N.Yasufuku, A.Alowaisy, R.Ishikura, J.Hussary, A.Rifa’i, Evaluation of Elastic Settlement Behavior in Small-Strain Range of Cement-Treated Clayey Soil, Lowland Technology International Journal, 24, 2, 1-13, 2022.10.
11. Jumana Hussary, Adel Alowaisy, Noriyuki Yasufuku, Ryohei Ishikura, Monther Abdelhadi, Pore structure and falling rate stage of evaporation in homogeneous sandy soil profiles, Soils and Foundations, 62, 2, 101108, 2022.06.
12. Adel Alowaisy, Noriyuki Yasufuku, Ryohei Ishikura, Masanori Hatakeyama, Kyono Shuu, Rapid determination of the unsaturated hydraulic conductivity for sandy soils utilizing the continuous pressurization method, Proceedings of the 20th International Conference on Soil Mechanics and Geotechnical Engineering , 1413-1418, 2022.05.
13. Meilani Adriyati, Noriyuki Yasufuku, Ryohei Ishikura, Ahmad Rifa’, A Simulation of Embodied CO2 Emission of Ground Improvement Technique Using Life-Cycle Assessment in Runway Construction, Proceedings of the 7th World Congress on Civil, Structural, and Environmental Engineering, 236-1-236-5, 2022.04.
14. Toshifumi Mukunoki , Daisuke Suetsugu, Kazunari Sako, Satoshi Murakami,Yoshinori Fukubayashi, Ryohei Ishikura, Takenori Hino, Satoshi Sugimoto,Kota Wakinaka, Shinichi Ito, Atsushi Koyama, Reconnaissance report on geotechnical damage caused by a localized torrential downpour with emergency warning level in Kyushu, Japan, Soils and Foundations, 61, 600-620, 2021.04.
15. O.A.Purtra, N.Yasufuku, A.Alowaisy,R.Ishikura,A.Rifai and Y.Kawaguch, Shear strength characteristic of unsaturated undisturbed black volcanic soil in Kumamoto under static and cyclic loading, Lowland Technology International, 22, 2, 280-289, 2020.09.
16. Adel Alowaisy, Noriyuki Yasufuku, Ryohei Ishikura, Masanori Hatakeyama, Shuu Kyono, Continuous pressurization method for a rapid determination of the soil water characteristics curve for remolded and undisturbed cohesionless soils, Soils and Foundations, 10.1016/j.sandf.2020.03.014, 60, 3, 634-647, 2020.06.
17. Okri Asfino Putra, Noriyuki Yasufuku, Ryohei Ishikura, Ahmad Rifa'i, Adel Alowaisy, Yuko Kawaguchi, Effect of soil structure disturbance on the shear strength of black volcanic ash soil, 4th International Conference on Earthquake Engineering and Disaster Mitigation, ICEEDM 2019 E3S Web of Conferences, 10.1051/e3sconf/202015602004, 156, 2020.03.
18. S. Nagata, R. Ishikura, N. Yasufuku, A. Alowaisy , Evaluation of crushed Granulated Blast Furnace Slag – sand mixtures liquefaction characteristics under unified compaction energy
, Proceedings of the Technical Forum on Mitigation of Geo-disasters in Asia , 80-83, 2019.11.
19. A. Alowaisy, N. Yasufuku, R. Ishikura, M. Hatakeyama , Validation of the direct measurement of the soil water characteristics curve using the newly developed continuous pressurization method, Proceedings of the 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering (16ARC) , 2019.10.
20. J-G.Kang, N.Yasufuku, R.Ishikura, A. Purnama, Prediction of Uplift Capacity of Belled-type Pile with Shallow Foundation in Sandy Ground, Lowland Technology International Journal, Volume21, Issue2, 71-79, 2019.09.
21. G.J. Liu, N. Yasufuku, R. Ishikura, Correlation between shear wave velocity and liquefaction resistance for sandy soils with a shearing history using cyclic tri-axial tests, Lowland Technology International Journal (LTI), 21, 2, 80-89, 2019.09.
22. Alowaisy, A.M., Yasufuku, N., Ishikura, R., Hatakeyama, M., Kyono, S., Rapid concurrent measurement of the soil water characteristics curve and the hydraulic conductivity function utilizing the continuous pressurization method, Proceedings of 7th Asia-Pacific Conference on Unsaturated Soils, 7, 2, 366-375, Japanese Geotechnical Society Special Publication, 2019.08.
23. Hatakeyama, M., Kyono, S., Yasufuku, N., Ishikura, R., Alowaisy, A.M. , Pore water pressure profile development through soil water characteristics curve determination utilizing the continuous pressurization method, Proceedings of 7th Asia-Pacific Conference on Unsaturated Soils , 7, 2, 272-280, Japanese Geotechnical Society Special Publication, 2019.08.
24. Putra, O.A., Yasufuku, N., Ishikura, R., Alowaisy, A., Kawaguchi, Y., Mechanical behaviour of unsaturated undisturbed black volcanic ash soil under static and cyclic loading, Proceedings of 7th International Symposium on Deformation Characteristics of Geomaterials (IS-GLASGOW 2019), Vol. 92, EDP Sciences(p. 07004), 2019.06.
25. Guojun Liu, Noriyuki Yasufuku, Ryohei Ishikura, Qiang Liu, Study on the relationship between shear wave velocity and effective stress in double liquefaction processes for sandy soils based on cyclic tri-axial compression experiments, Proceedings of 7th International Symposium on Deformation Characteristics of Geomaterials (IS-GLASGOW 2019), Vol.92, EDP Sciences(p. 04009), 2019.06.
26. Alowaisy, A., Yasufuku, N., Ishikura, R., Hatakeyama, M., Kyono, S., Novel rapid measurement system of undisturbed soils water characteristics curve utilizing the continuous pressurization method, Proceedings of 7th International Symposium on Deformation Characteristics of Geomaterials (IS-GLASGOW 2019), Vol.92, EDP Sciences(p. 07008), 2019.06.
27. T. Sakata , N. Yasufuku , R.Ishikura , A.Alowaisy, Mechanical and hydrological time-dependent properties ofgranulated blast furnace slag-sand mixture in soft ground improvement, Lowland Technology International, 20, 3, 285-296, 2018.09.
28. Ryohei Ishikura, Wataru Arima, Noriyuki Yasufuku, Interface friction between soft clay and construction material considering the correlation between surface roughness and soil particle size, Proceedings ofthe 7th China-Japan Geotechnical Symposium, 99-104, 2018.03.
29. Guojun Liu, Noriyuki Yasufuku, Ryohei Ishikura, Velocity features of shear wave in sand in liquefying progress under cyclic tri-axial test with bender elements, Proceedings of the 7th China-Japan Geotechnical Symposiumu, 138-142, 2018.03.
30. Shoma Fujiwara, Ryohei Ishikura, Noriyuki Yasufuku, Mitsuru Taniyama, Accuracy verification of non-destructive testing method for estimating degree of compaction on embankment slope, Proceedings of the 7th China-Japan Geotechnical Symposium, 57-61, 2018.03.
31. T. Mukunoki, Kiyonobu Kasama, S. Murakami, Hiro Ikemi, Ryohei Ishikura, T. Fujikawa, Noriyuki Yasufuku, Y. Kitazono, Reconnaissance report on geotechnical damage caused by an earthquake with JMA seismic intensity 7 twice in 28 h, Kumamoto, Japan, Soils and Foundations, 10.1016/j.sandf.2016.11.001, 56, 6, 947-964, 2016.12.
32. Wataru Arima, Ryohei Ishikura, Noriyuki Yasufuku, Yosuke Kaida, Evaluation of soft clay-cement column interface strength and its application in settlement analysis, Proceedings of Geotechnics for sustainable infrastructure development, 768-774, 2016.11.
33. Weiwen Wang, Ryohei Ishikura, Noriyuki Yasufuku, Tomomi Sakata, Liquefaction Resistance of Granulated Blast Furnace Slag Mixed with Natural Sand, Proceedings of The 8th Asian Joint Symposium on Geotechnical and Geoenvironmental Engineering(JS-Tainan 2016), 81-84, 2016.11.
34. K. Vilayvong, Noriyuki Yasufuku, Ryohei Ishikura, Evaluation of rainfall erosivity and impact forces using strain gauges, Lowland Technology International, 10.14247/lti.17.4_207, 17, 4, 207-217, 2016.10.
35. Luky Handoko, Noriyuki Yasufuku, Ryohei Ishikura, Ahmad Rifa'i, Comparison of consolidation curves for remolded mud volcano of Sidoarjo, Indonesia, International Journal of GEOMATE, 10, 4, 1978-1982, 2016.06.
36. Ryohei Ishikura, Noriyuki Yasufuku, Michael J. Brown, An estimation method for predicting final consolidation settlement of ground improved by floating soil cement columns, Soils and Foundations, 10.1016/j.sandf.2016.02.005, 56, 2, 213-227, 2016.04.
37. Ryohei Ishikura, Wataru Arima, Zhenbo Jiang, Noriyuki Yasufuku, Mobilized Interface Friction between Soft Clay and Cement Column Focusing on the Surface Roughness, Proceedings of International Conference on Soft Ground Engineering, 327-335, 2015.12.
38. Babloo Chaudhary, Hemanta Hazarika, Naoya Monji, Kengo Nishimura, Ryohei Ishikura, Kiyonobu KASAMA, New reinforcing method for improving the bearing capacity of breakwater foundation against earthquake and tsunami, Proceedings of the 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, 1273-1278, 2015.11.
39. Noriyuki Yasufuku, Ryohei Ishikura, Mitsuru Taniyama, Compaction quality on the embankment slope and its evaluation method, Proceedings of the 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, 2002-2005, 2015.11.
40. Ryohei Ishikura, Shodai Soda, Shintaro Miyamoto, Consolidation effect of dredged soil by siphon method focusing on the porous filter material, 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, 10.3208/jgssp.JPN-058, 2002-2005, 2015.11.
41. Mohd Khaidir Abu Talib, N.Yasufuku, R.Ishikura, Effectiveness of Sugarcane Bagasse Ash (SCBA) as Partial Cement Replacement in Peat Stabilization, Memoirs of the Faculty of Engineering, Kyushu University, 74, 3, 69-78, 2015.09.
42. Jiang Zhenbo, Ryohei Ishikura, N.Yasufuku, Estimation of Consolidating Settlement Based on a Time-Dependent Skin Friction Model Considering Column Surface Roughness , Proceedings of 17th International conference on soil mechanics and geotechnical engineering , 17, 9, 92-99, 2015.09.
43. Luky Handoko, Ahmad Rifai, N.Yasufuku, Ryohei Ishikura, Physical properties and mineral content of Sidoarjo mud volcano, Proceedings of The 5th International Conference of Euro Asia Civil Engineering Forum (EACEF-5), 324-330, 2015.09.
44. Shodai Soda, R.Ishikura, N.Yasufuku, Luky Handoko, Investigation of the consolidation drainage of high water content clay by siphon method through unsaturated filter, Proceedings of The 5th International Conference of Euro Asia Civil Engineering Forum, 383-389, 2015.09.
45. M. K. Abu Talib, N. Yasufuku AbuTalib, Ryohei Ishikura, Effects of sugarcane bagasse ash (SCBA) on the strength and compressibility of cement stabilized peat, Lowland Technology International, 10.14247/lti.17.2_73, 17, 2, 73-82, 2015.09.
46. Z. B. Jiang, Ryohei Ishikura, Noriyuki Yasufuku, Evaluation of settlement behavior of the improved ground by using floating type columns during consolidation, Lowland Technology International, 10.14247/lti.17.2_59, 17, 2, 59-72, 2015.09.
47. AL-BAGHDADI, T, BROWN, M.J., KNAPPETT, J. A, Ryohei Ishikura, Modelling of laterally loaded screw piles with large helical plates in sand, Int. Symp. on Frontiers in Offshore Geotechnics. Oslo, Norway, 503-508, 2015.06.
48. M.K.Abu Talib, N. Yasufuku, R. Ishikura, Effects of sugarcane bagasse ash (SCBA) on the strength and compressibility of cement stabilized peat, Journal of Lowland Technology International , 17, 2, 73-82, 2015.06.
49. Z.B.Jiang, Ryohei Ishikura, Noriyuki Yasufuku, Evaluation of settlement behavior of the improved ground by using floating type columns during consolidation, Journal of Lowland Technology International, 17, 2, 59-72, 2015.06.
50. Mohd Khaidir Abu Talib, Noriyuki Yasufuku, Ryohei Ishikura, Effectiveness of Sugarcane Bagasse Ash (SCBA) as partial cement replacement in peat stabilization, Memoirs of the Faculty of Engineering, Kyushu University, 74, 3, 69-78, 2015.02.
51. Z. B. Jiang, Ryohei Ishikura, Noriyuki Yasufuku, Evaluation of settlement behaviors of the improved ground by using floating type cement-treated columns during consolidation, Proc. of the 14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014, 435-440, 2015.01.
52. Shodai Soda, Ryohei Ishikura, Noriyuki Yasufuku, Luky Handoko, Investigation of the consolidation drainage of high water content clay by siphon method through unsaturated filter, Procedia Engineering, 10.1016/j.proeng.2015.11.094, 125, 383-389, 2015.01.
53. Wonjin Baek, Juhyun Kim, Hiroshi Matsuda, Ryohei Ishikura, Koouho Hwang, Characteristics of Intermediate Soil with Low Plasticity from Inchon ,Korea, International Journal of Offshore and Polar Engineering, 24, 4, 309-319, 2014.12.
54. Z.B. Jiang, Ryohei Ishikura, Noriyuki Yasufuku, Evaluation of settlement behaviors of the improved ground by using floating type cement-treated columns during consolidation, Proceedings of Computer methods and Recent Advance in Geomechanics, ID114, 2014,9., 2014.09.
55. S.Miyamoto, N.Yasufuku, R.Ishikura, K.Omine, S.Kawai, A.Yamawaki, Shearing response and shear strength of solid waste material conducted by developed direct shear test apparatus, Proceedings of the 10th International Conference on Geosynthetics, Session25-5, 2014.09.
56. S. Miyamoto, N. Yasufuku, R. Ishikura, K. Omine, S. Kawai, A. Yamawaki, In-situ shearing response and shear strength of various solid waste ground focused on fibrous materials composition, Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, Vol.2, 1357-1362, 2014.09.
57. M.K.Abu Talib, N. Yasufuku, Ryohei Ishikura, Utilization of Sugarcane Bagasse Ash in Peat Stabilization, Proceedings of 9th International Symposium on Lowland Technology, pp.174-180, 2014.09.
58. Z.Jiang, Ryohei Ishikura, N. Yasufuku, Model Testing and Numerical Simulations of Floating Type Cement Treated Columns during Consolidation Settlement, Proceedings of 9th International Symposium on Lowland Technology,pp.42-49, 2014.09.
59. Ryohei Ishikura, N. Yasufuku, T. Kono, R. Kurokawa, Short Term Durability of Cement Stabilized Sandy Soil under Seawater Environment, Proceedings of International Symposium of Lowland Technology,pp.181-187, 2014.09.
60. M.Iwasaki, N. Yasufuku, Q.Liu, H. Hazarika, R. Ishikura, Evaporation Behavior of Sandy Soil Layer focusing on grain Size and Depth from the surface, Proceedings of 7th International Joint Symposium on Problematic Soils and Geoenvironment in Asia, 71-74, 2013.11.
61. Ryohei Ishikura, Hiroshi Matsuda, Naoyuki Igawa, Visualization of Settlement Behavior for Friction Pile Group during Consolidation, Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering , Paris, pp.2759-2762, 2013.09.
62. Rashidah ADON, Noriyuki Yasufuku, Ryohei Ishikura, Devapriya WIJEYESEKERA, New Technique Assessment of Plastic Limit of Soft Clay Particularly Peat Soils, Memoirs of the Faculty of Engineering, Kyushu University, 73, 1, 47-55, 2013.06.
63. Hiroshi Matsuda, Tran Thanh Nhan, Ryohei Ishikura, Excess Pore Water Pressure Accumulation and Recompression of Saturated Soft Clay Subjected to Uni-directional and Multi-directional Cyclic Simple Shear, Journal of Earthquake and Tsunami, Vol.7, No.4, 1250027-1-22, 2013.06.
64. Hiroshi Matsuda, Tran Thanh Nhan, Ryohei Ishikura, Prediction of Excess Pore Water Pressure and Post-Cyclic Settlement on Soft Clay Induced by Multi-directional Cyclic Shear as a Function of Strain Path Parameters, Soil Dynamics and Earthquake Engineering, Vol.49. pp.75-88, 2013.03.
65. Fumio Niiya, Hemanta Hazarika, Noriyuki Yasufuku, Ryohei Ishikura, Cyclic Frictional Behavior of Two and Three Dimensional Geosynthetics used in Liquefaction Countermeasure, 5th Taiwan-Japan Joint Workshopo on Geotechnical Hazards from Large Earthquakes and Heavy Rainfall, pp.SⅢ19-22, 2012.12.
66. Ryohei Ishikura, Hiroshi Matsuda, Naoyuki Igawa, Noriyuki Yasufuku, Kiyoshi Omine, Visualization of settlement behavior and bearing capacity of piled raft foundation in soft ground, Proceedings of International Joint Symposium on Urban Geotechnics for Sustainable Development, pp.90-93, 2012.11.
67. Ryohei ISHKURA, Hiroshi MATSUDA, Noriyuki YASUFUKU, Kiyoshi OMINE, Koji KASHIMA, Naoyuki IGAWA, Settlement behavior of piled raft foundation in soft ground, Proceedings of the 9th International Conference of on Testing and Design Methods for Deep Foundation, pp.485-490, 2012.09.
68. Ryohei Ishikura, Settlement Control of the Improved Ground by Combination of Surface Stabilization and Floating Type Cement-Treated Columns, Proceedings of Seventh Asian Young Geotechnical Engineer Conference, pp.289-296, 2012.09.
69. M. Wada, H. Matsuda, R. Ishikura and Y. Shinya, Self-Restoration Characteristics of Granulated Blast Furnace Slag as an Earthquake Resistant Material, 15World Conference on earthquake Engineering, Paper Number, 3224, 10pages, LISBON PORTUGAL, 2012.09.
70. H. Matsuda, T.T. Nhan, R. Ishikura, T. Inazawa and P.H. Andre, New Criterion for the Liquefaction Resistance under Strain-Controlled Multi-Directional Cyclic Shear, 15World Conference on earthquake Engineering, Paper Number, 4149, 10pages,LISBON PORTUGAL, 2012.09.
71. Hiroshi MATSUDA, Tran Thanh NHAN, Ryohei ISHIKURA and Andre Primantyo Hendrawan, Accumulation of excess pore water pressure and post-cyclic settlement of saturated soft clay subjected to multi-directional cyclic simple shear, Proceedings of 2nd International Conference on Transportation Geotechnics, 2012 Taylor & Francis Group, London, pp.598-603, 2012.09.
72. Hiroshi MATSUDA, Tran Thanh NHAN, Ryohei ISHIKURA, Andre Primantyo HENDRAWAN, Excess pore water pressure accumulation and recompression of saturated clay subjected to multi-directional cyclic simple shear, Proceedings of International Conference on Geotechnics for Sustainable Development, pp.433-442, 2011.10.
73. Matsuda, H., Hendrawan, A. P., Ishikura, R., Kawahara, S, Effective stress change and post-earthquake settlement properties of granular materials subjected to multi-directional cyclic shear, Soils and Foundations, Japanese Geotechnical Society, Vol.51,No.5,pp.873-884, 2011.10.
74. Ryohei ISHIKURA, Hiroshi MATSUDA, Hidetake MATSUI, Evaluation of Bearing Capacity on Floating Type Improved Ground, Proceedings of 14th Asian Region Conference on Soil Mechanics and Geotechnical Engineering, Paper ID268,6pages, 2011.05.
75. Hendrawan, A. P., Matsuda, H., Ishikura, R., Tran Than Nhan, Effective stress change of granulated blast furnace slag under multi-directional cyclic simple shear, International Journal of Academic Research, Vol.3, No.2, pp.491-495, 2011.03.
76. Hiroshi Matsuda, Andre Primantyo Hendrawan, Ryohei Ishikura, Tran Thanh Nhan, Influence of Relative Density on Effective Stress Change of Saturated Granular Materials under Multi-Directional Cyclic Shear, Proceedings of the International Symposium, Hanoi Geotechnical Engineering, pp.53-58, 2010.11.
77. Andre Primantyo HENDRAWAN, Hiroshi MATSUDA, Ryohei ISHIKURA, Satoshi KAWAHARA, Effective stress change and settlement characteristics of saturated granular materials under multi-directional cyclic shear, Proceedings of International Joint Symposium of Geodisaster Prevention and Geoenvironment in Asia, pp.123-128, 2009.11.
78. Taizo KOBAYASHI, Kiyoshi OMINE, Yusuke SUYAMA, Ryohei ISHIKURA, Evaluation of Gravity Dependency on Bearing Capacity of Lunar Surface, Proceedings of 17th International Conference on Soil Mechanics and Geotechnical Engineering, pp.656-659, Alexandria, Egypt, 2009.10.
79. Ryohei ISHIKURA, Hidetoshi OCHIAI, Hidetake MATSUI, Estimation of Settlement of In-situ Improved Ground Using Shallow Stabilization and Floating-type Columns, Proceedings of 17th International Conference on Soil Mechanics and Geotechnical Engineering, pp.2394-2398, Alexandria, Egypt, 2009.10.
80. Ryohei ISHIKURA, Hidetoshi OCHIAI, Kiyoshi OMINE, Noriyuki YASUFUKU, Hiroshi MATSUDA, Bearing Capacity of Improved Ground with a Combined Technology of Shallow Stabilization and Floating-type Cement Treated Columns, Proceedings of International Symposium on Deep mixing and Admixture Stabilization, pp.321-326, 2009.05.
81. Hiroshi MATSUDA, Haruhiko SHINOZAKI, Ryohei ISHIKURA, Naoyoshi KITAYAMA, Application of Granulated Blast Furnance Slag to the Earthquake Resistant Earth Structure as a Geo-material, Proceedings of 14th World Conference on Earthquake Engineering, Paper ID 04-01-0082,8pages, 2008.10.
82. Hidetake MATSUI,Hidetoshi OCHIAI, Noriyuki YASUFUKU, Kiyoshi OMINE, Taizo KOBAYASHI, Ryohei ISHIKURA, Improvement in Bearing Capacity of Shallow Improvement Ground by Mixing Short Fibers, Proceedings of Fifth International Symposium on Earth Reinforcement, pp.613-618, 2007.11.
83. Ryohei ISHIKURA, Hidetoshi OCHIAI, Noriyuki YASUFUKU, Kiyoshi OMINE, Hidetake MATSUI, Evaluation of Settlement of the Improved Ground with Floating Type Columns in Low Improvement Ratio, Proceedings of Recent Developments of Geotechnical and Geo-Environmental Engineering in Asia, Dalian University Press, pp.505-510, 2006.11.
84. Ryohei ISHIKURA, Hidetoshi OCHIAI, Noriyuki YASUFUKU, Kiyoshi OMINE, Taizo KOBAYASHI, Estimation of the Settlement of Improved Ground with Floating-type Cement-treated columns, Proceedings of Fourth International Conference on Soft Soil Engineering, pp.625-635, 2006.11.
85. Ryohei ISHIKURA, Hidetoshi OCHIAI, Noriyuki YASUFUKU, Kiyoshi OMINE, Taizo KOBAYASHI, Consolidation and Deformation Properties of Improved Ground with Floating Type Cement-Treated Columns, Proceedings of Recent Developments of Geotechnical Engineering in Soft Soil Ground,, pp.322-327, 2005.10.