Extended Residual-State Creep Test and Its Application for Landslide Stability Assessment
1
Engineering Division, Okuyama Boring Co. Ltd., Tokyo 103-0004, Japan
2
Faculty of Civil Engineering, Wrocław University of Science and Technology, 50-370 Wrocław, Poland
3
Department of Building Engineering, Wrocław University of Environmental and Life Sciences, 50-375 Wrocław, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Angelo Marcello Tarantino
Materials 2021, 14(8), 1968; https://doi.org/10.3390/ma14081968
Received: 27 January 2021
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Revised: 31 March 2021
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Accepted: 12 April 2021
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Published: 14 April 2021
(This article belongs to the Special Issue Testing of Materials and Elements in Civil Engineering)
This paper contains the results of a newly developed residual-state creep test performed to determine the behavior of a selected geomaterial in the context of reactivated landslides. Soil and rock creep is a time-dependent phenomenon in which a deformation occurs under constant stress. Based on the examination results, it was found that the tested clayey material (from Kobe, Japan) shows tertiary creep behavior only under shear stress higher than the residual strength condition and primary and secondary creep behavior under shear stress lower or equal to the residual strength condition. Based on the data, a model for predicting the critical or failure time is introduced. The study traces the development of the limit state based on the contact model corresponding to Blair’s body. The time to occurrence of the conditions necessary for unlimited creep on the surface is estimated. As long-term precipitation and infiltrating water in the area of the landslides are identified as the key phenomena initiating collapse, the work focuses on the prediction of landslides with identified surfaces of potential damage as a result of changes in the saturation state. The procedure outlined is applied to a case study and considerations as to when the necessary safety work should be carried out are presented.
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Keywords:
residual-state creep; saturation front; landslides
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MDPI and ACS Style
Bhat, D.R.; Kozubal, J.V.; Tankiewicz, M. Extended Residual-State Creep Test and Its Application for Landslide Stability Assessment. Materials 2021, 14, 1968. https://doi.org/10.3390/ma14081968
AMA Style
Bhat DR, Kozubal JV, Tankiewicz M. Extended Residual-State Creep Test and Its Application for Landslide Stability Assessment. Materials. 2021; 14(8):1968. https://doi.org/10.3390/ma14081968
Chicago/Turabian StyleBhat, Deepak R., Janusz V. Kozubal, and Matylda Tankiewicz. 2021. "Extended Residual-State Creep Test and Its Application for Landslide Stability Assessment" Materials 14, no. 8: 1968. https://doi.org/10.3390/ma14081968
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