Original Paper (Vol.61 No.1)

History and Current State of Development of Vacuum Consolidation Method in Japan
Seiji SUWA, Masashi KAMON, Masaaki KIYAMA and Mitsuharu FUKUDA	2
The Actual Situation and Tendency of the Elution of Hexavalent Chromium from Improved Soil by Cement -Analysis Based on Elution Test Data of Three Years in the Past-
Hideo SAKABE, Kohei SAWA, Yoshihisa NAKAYAMA and Otonobu SHIRAKI	7
Calcium Leaching Mechanism of Lime Treated Soil Immersed in Seawater
Hiroyuki HARA, Daisuke SUETSUGU, Shigenori HAYASHI	11
Strength Property of Soil Improvement Auxiliary Material Utilizing Stone Sludge
Minoru YAMANAKA, Hirohiko IWAHARA, Shuichi HASEGAWA, Masahide ISHIZUKA and Shoji TAKAHASHI	15
Granulation Technique of Coal Ash and Cohesive Soil and Meterial Properties of Granulated Materials as Geo-Material
Norimasa YOSHIMOTO, Masayuki HYODO, Yukio NAKATA	19
Fluoride Leaching Control of Waste Plasterboard Powder Using Light Burned Magnesite and Its Applicability to the Stabilization/Solidification of Clay
Mikio YAMADA, Hiroaki SANO and Shigeru TSUBOKAWA	25
Study on Hydrogen Sulfide Gas Production Potential Test for Ground Improvement by Recycled Gypsum and Lime
Kazuto ENDO, Mikako NAKAGAWA, Hirofumi SAKANAKURA, Yuzo INOUE, Masahiro I and Genichi SUGIHARA	31
Swelling Pressure for Water-Swelling Materials
Shinya INAZUMI, Tadashi WAKATSUKI, Kenji KATO and Masakatsu KOBAYASHI	37
Reinforcement Effect of Recycled Plastic Piles on Bearing Capacity of Shallow Ground
Mariko OKUZAWA, Junko SASAKI, Shigeyoshi HIRATA and Shuichi TAKAHASHI	41
Vacuum Consolidation for Construction of Expressway Embankment on Extremely Soft Ground
Minoru KAWAIDA, Toshiaki KOSAKA, Koichi YAMADA and Kazuyoshi NAKAKUMA	46
Development of Grouting Method of Fine Sand with Ultrafine Cement Grout
Yu KOIZUMI, Toshiyuki TANAKA, Jinya TAKEUCHI, Tomohiro KANAZAWA and Makoto NISHIGAKI	52
Evaluation of Bearing Capacity of Soil-Cement Column Reinforced with Wooden Core Used for Small Buildings
Keisuke KITAMURA and Yuji SHIMOHIRA	58
Dynamic Shear Strength of Improved Soil with B-Type Blast-Furnace Cement
Sadatomo ONIMARU, Junichi KOSEKI, Yukika MIYASHITA, Takeko MIKAMI and Yoshio SUZUKI	64
Improvement Effect Evaluation of Low-Replacement-Ratio SCP Method with RI-CPT
Tsunehiro SAKAIYA, Mitsuru TAKAHASHI, Tsutomu SAKAKIBARA and Takatoshi NO‚fUCHI	68
Bearing Capacity of Floating-Type Cement-Treated Columns with Shallow Stabilization
Ryohei ISHIKURA, Hiroshi MATSUDA, Noriyuki YASUFUKU, Kiyoshi OMINE and Koji KASHIMA	74
Long-Term Consolidation Settlement Prediction of D-Runway in Tokyo International Airport
Kenta MIZUNO, Yoichi WATABE, Masaki KOBAYASHI, Takatoshi NOGUCHI, Yasunori AOKI, Takanobu YAMAMOTO and Mitsuru TAKAHASHI	78
Relationship between the Permeability and Frozen Void Ratio of Saturated Fine-Grained Soils
Yuzuru ITO and Naoya HORIKE	85

Lecture (Vol.61 No.1)

Upgrading Technologies for Concrete Structures Focusing on Surface Protection and their Prospects ‡V: Examples of Application to Actual Structures
Hidenori HAMADA, Norikazu NOMURA, Tsutomu NIINA, Hiroshi WATANABE and Norio TERADA	89