土の材料特性に関する基礎的研究
Mechanical properties of geomaterials
・地盤材料の室内試験の高度化 Laboratory testing technique
・地盤材料(砂、礫、風化岩、改良土等)の変形強度特性の解明 Deformation and strength characteristics of various geomaterials, such as sand, gravel, weathered rock, improved soil and etc.