Strain-Rate Dependence of Triaxial Compressive Strength of Artificial Methane-Hydrate-Bearing Sediment

In this study, drained triaxial compression tests were conducted on artificial methane-hydrate-bearing sediment samples to obtain the strain-rate dependence. In the tests, an axial load was applied at a constant or alternating strain rate. On the basis of the results, we examined the strain-rate dep...

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Bibliographic Details
Main Authors: Miyazaki, Kuniyuki, Masui, Akira, Aoki, Kazuo, Sakamoto, Yasuhide, Yamaguchi, Tsutomu, Okubo, Seisuke
Format: Article in Journal/Newspaper
Language:English
Published: The International Society of Offshore and Polar Engineers 2010
Subjects:
Online Access:https://oceanrep.geomar.de/id/eprint/43536/
https://oceanrep.geomar.de/id/eprint/43536/1/Miyazaki.pdf
Description
Summary:In this study, drained triaxial compression tests were conducted on artificial methane-hydrate-bearing sediment samples to obtain the strain-rate dependence. In the tests, an axial load was applied at a constant or alternating strain rate. On the basis of the results, we examined the strain-rate dependence of the peak strength and residual strength and considered the deformation mechanism of the specimen. We found that the strain-rate dependence of the artificial methane-hydrate-bearing sediment is as strong as or slightly stronger than that of frozen sand and is stronger than that of many other geomaterials.