Study on the volume reduction of the fine-grained soil by the ultrasonic wave

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656290
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Geotechnical engineering
• Research Institution: Tokuyama College of Technology
• Principal Investigator: UE SHUNJI 徳山工業高等専門学校, 土木建築工学科, 教授 (30124093)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 超音波 / 細粒土 / 相対密度 / 減容化 / 浚渫土

Outline of Final Research Achievements

The purpose of this research is to clarify the volume reduction of fine-grained soils by using ultrasonic wave. Frequency uses 28kHz,40kHz,60kHz and output voltage uses 100V, 300V, 400V. About particle sizes of three different kinds of fine grained soil. Volume reduction tests was held when the ultrasonic irradiation from the horizontal direction. After the test, water content and wet density, dry density, void ratio, the relative density and volume reduction rate was calculated. It became clear that the volume reduction race of fine soil was improved by irradiating an ultrasonic wave from horizontal direction and the characteristics of the volume reduction were different due to differences of particle size, frequency and output voltage.

Free Research Field

地盤工学