1. 1) Coastal Development Institute of Technology (2008a): Technical manual for pneumatic mixing cement treated soil (revised edition). in Japanese
2. 2) Coastal Development Institute of Technology (2008b): Technical manual for airfoam treated lightweight soil (revised edition). in Japanese
3. 3) JIS A 1205 (2009): Test method for liquid limit and plastic limit of soils
4. 4) JIS A 1216 (2009): Method for unconfined compression test of soils
5. 5) Kitazume, M. and Satoh, T. (2003): Development of pneumatic flow mixing method and its application to Central Japan International Airport construction, Ground Improvement, 7(3), 139-148.