[2L06-09] Bentonite

[2L08] A study on ultrasonic measurement for water distribution investigation in compacted bentonite

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

Keywords:Geological disposal, Bentonite, Ultrasonic measurement, Water saturation determination

Ultrasonic measurement method for water saturation level in unsaturated compacted bentonite was proposed. Transmitted waves in compacted bentonite were observed using laser Doppler vibrometer. It can be confirmed that ultrasonic wave propagates uniformly for the radial direction under the uniform degree of saturaion condition.