Evaluation of Shear Strength of Volcanic Soils in Mountainous Areas Using In-Situ Direct Shear Test Apparatus
DOI:
https://doi.org/10.64862/Keywords:
In-situ direct shear test, Volcanic soilsAbstract
Volcanic pumice soils are widely distributed in Japan and Asian countries, causing serious slope disasters. Their highly porous and loose structure is easily disturbed, so in-situ testing that maintains the original structure is desirable. In this study, a lightweight and small-sized in-situ direct shear test apparatus was newly developed. The improved loading system allows both monotonic and cyclic loading. The developed apparatus was applied to volcanic pumice soils in Japan, and representative examples are presented. The proposed in-situ direct shear test apparatus is an effective method to evaluate the mechanical behavior of sensitive volcanic pumice soils quickly and simply in the field.
References
Kawamura, S., Kawajiri, S., Hirose, W., and Watanabe, T. (2019). Slope failures/landslides over a wide area in the 2018 Hokkaido Eastern Iburi earthquake, Soils Found, 59(6), 2376-2395.
Hashimoto, H., Horinouchi, K., Sato, I., Kuno, M., Kuwano, R. (2023). Soil Structure in Volcanic Pumice Soil of Dozou-sawa River Evaluated from In Situ and Laboratory Tests. Geotec Test J. ASTM. 46(6).
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