Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2010.03a
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- Pages.198-207
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- 2010
Estimation of Void Ratio by Elastic Wave Velocities
탄성파 속도를 이용한 간극비 산정 기법 연구
- Yoon, Hyung-Koo (School of Civil, Environmental and Architectural Engineering, Korea University) ;
- Jung, Soon-Hyuck (School of Civil, Environmental and Architectural Engineering, Korea University) ;
- Jeong, Hun-Jun (Geotechnical Engineering & Consultant) ;
- Lee, Jong-Sub (School of Civil, Environmental and Architectural Engineering, Korea University)
- Published : 2010.03.25
Abstract
Many methods and techniques have been developed to obtain the accurate design parameters in soft soils. In particular, several researchers suggest the techniques to get the void ratio for understanding the soil behavior. The objective of this paper verifies the accuracy of the proposed analytical solution for determining the void ratio based on the elastic wave velocities. The paper covers the theories of Wood, Biot, Gassmann and Foti proposed chronological order. The total theory represents the wave propagation in fully saturated medium. To verify the proposed analytical solution, the laboratory and field tests are carried out. After measuring the elastic wave, the void ratios are assessed using proposed equation. The volume based void ratios are also obtained for comparing with the estimated value by several equations. The values estimated by volume, Gassmann and Biot are show good similarity. However, the void ratios based on Wood and Foti methods have a slightly different trend. This study suggests that the theories of Biot and Gassmann may be a useful equation for assessing the void ratio using elastic wave velocities in the field.