1. 1) H.Hayashi, S.Nishimoto, K.Ohishi, and M.Terashi, ‘‘Long-term strength characteristics of cement-stabilized soil, Part 1, Onsite survey of a soil-cement column constructed by the DJM method’’, Monthly Report, Civil Engineering Research Institute for Cold Region, No. 611, pp. 11 - 19 (2004).
2. 2) N.Yoshida, G.Kuno, and K.Kataoka, ‘‘A follow-up survey of soil stabilized by the shallow mixing method at 15 years after construction’’, Proceedings of the 27th Conference of theJapanese Geotechnical Society, pp. 2323 - 2324 (1992).
3. 3) M.Ikegami, T.Ichiba, K.Ohishi, and M.Terashi, ‘‘Long-term strength change of cement treated soil at Daikoku Pier’’, Proceedings of Soft Ground Engineering in Coastal Areas, pp.241-246(2002).
4. 4) S.Saito, ‘‘Experimental Examination on the Engineering Properties of Cement-Treated Soil Constructed by the Deep Mixing Stabilization Method’’, doctoral thesis, Nihon University(1988).
5. 5) M.Inagaki, Y.Fukushima, M.Nozu, Y.Yanagawa, and Y.Kasahara, ‘‘Quality of the deep mixed soil-cement column directly under the fill of an expressway at 10 years in service’’, Proceedings of the Conference of the 37th Geotechnical Engineering Society, pp. 1117 - 1118(2002).