Effect of straw reinforcement on the shearing and creep behaviours of Quaternary loess

Abstract In addition to the shearing behavior of soil, the creep character is also considered crucial in determining the long-term shear strength. This especially holds true for the loess that possesses the metastable microstructure and is prone to landslide hazards. This study explored the potentia...

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Autores principales:	Zhong-Fei Xue, Wen-Chieh Cheng, Lin Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/52209c09c64d48bf8b5585bec6d71e32
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spelling	oai:doaj.org-article:52209c09c64d48bf8b5585bec6d71e322021-12-02T19:16:11ZEffect of straw reinforcement on the shearing and creep behaviours of Quaternary loess10.1038/s41598-021-99318-52045-2322https://doaj.org/article/52209c09c64d48bf8b5585bec6d71e322021-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-99318-5https://doaj.org/toc/2045-2322Abstract In addition to the shearing behavior of soil, the creep character is also considered crucial in determining the long-term shear strength. This especially holds true for the loess that possesses the metastable microstructure and is prone to landslide hazards. This study explored the potential application of straw reinforcement to enhance the shearing and creep properties of the Quaternary loess. The mechanism responsible for the straw reinforcement to elevate the peak shear strength was revealed. Furthermore, three creep characters, namely attenuating creep, non-attenuating creep, and viscous flow were identified in this study. The unreinforced and reinforced specimen behaved in a different manner under identical shear stress ratio condition. The reinforced specimen was superior in limiting the particle relative movement within the shear plane than the unreinforced specimen. The chain reaction of interparticle contact loss, accompanied with excessive viscous displacement, rapid weakening of creep resistance, and eventually accelerated creep displacement, provided an evidence for the formation mechanism of slow-moving landslide. The long-term shear strength using the isochronal stress–strain relationship may be used for optimising the design of high-fill embankment works.Zhong-Fei XueWen-Chieh ChengLin WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhong-Fei Xue Wen-Chieh Cheng Lin Wang Effect of straw reinforcement on the shearing and creep behaviours of Quaternary loess
description	Abstract In addition to the shearing behavior of soil, the creep character is also considered crucial in determining the long-term shear strength. This especially holds true for the loess that possesses the metastable microstructure and is prone to landslide hazards. This study explored the potential application of straw reinforcement to enhance the shearing and creep properties of the Quaternary loess. The mechanism responsible for the straw reinforcement to elevate the peak shear strength was revealed. Furthermore, three creep characters, namely attenuating creep, non-attenuating creep, and viscous flow were identified in this study. The unreinforced and reinforced specimen behaved in a different manner under identical shear stress ratio condition. The reinforced specimen was superior in limiting the particle relative movement within the shear plane than the unreinforced specimen. The chain reaction of interparticle contact loss, accompanied with excessive viscous displacement, rapid weakening of creep resistance, and eventually accelerated creep displacement, provided an evidence for the formation mechanism of slow-moving landslide. The long-term shear strength using the isochronal stress–strain relationship may be used for optimising the design of high-fill embankment works.
format	article
author	Zhong-Fei Xue Wen-Chieh Cheng Lin Wang
author_facet	Zhong-Fei Xue Wen-Chieh Cheng Lin Wang
author_sort	Zhong-Fei Xue
title	Effect of straw reinforcement on the shearing and creep behaviours of Quaternary loess
title_short	Effect of straw reinforcement on the shearing and creep behaviours of Quaternary loess
title_full	Effect of straw reinforcement on the shearing and creep behaviours of Quaternary loess
title_fullStr	Effect of straw reinforcement on the shearing and creep behaviours of Quaternary loess
title_full_unstemmed	Effect of straw reinforcement on the shearing and creep behaviours of Quaternary loess
title_sort	effect of straw reinforcement on the shearing and creep behaviours of quaternary loess
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/52209c09c64d48bf8b5585bec6d71e32
work_keys_str_mv	AT zhongfeixue effectofstrawreinforcementontheshearingandcreepbehavioursofquaternaryloess AT wenchiehcheng effectofstrawreinforcementontheshearingandcreepbehavioursofquaternaryloess AT linwang effectofstrawreinforcementontheshearingandcreepbehavioursofquaternaryloess
_version_	1718376969751494656

Effect of straw reinforcement on the shearing and creep behaviours of Quaternary loess

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