[2H18-23] Engineering

[2H21] A Study on Evaluation of Elastic Properties in Unsaturated Compacted Bentonite by Ultrasonic Measurement

*Shun Kimura¹, Kazumi Kitayama¹, Hideharu Takahashi¹, Kazushi Kimoto², Katsuyuki Kawamura¹, Hiroshige Kikura¹ (1. Tokyo Tech., 2. Okayama Univ.)

Keywords:Geological disposal, Bentonite, Ultrasound, Elastic properties

Ultrasonic velocity measurement method in unsaturated compacted bentonite was developed. The effect of a degree of saturation on the longitudinal and shear wave velocities was investigated experimentally. In addition, the elastic properties in unsaturated compacted bentonite were evaluated by ultrasonic velocities.