Effects of temperature, pore fluid composition and rate of shearing on the residual shear strength of soils

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10483564" target="_blank" >RIV/00216208:11310/24:10483564 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1201/9781003431749-242" target="_blank" >https://doi.org/10.1201/9781003431749-242</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1201/9781003431749-242" target="_blank" >10.1201/9781003431749-242</a>

Result language

angličtina

Original language name

Effects of temperature, pore fluid composition and rate of shearing on the residual shear strength of soils

Original language description

The residual shear strength is a crucial parameter in the post-failure behaviour of landslides. Many studies have shown that this parameter depends on the rate of shearing according to the normal stress and soil composition. Some researchers have shown that the composition of the pore fluid, which in landslide shear zones is typically an aqueous solution containing various dissolved ions, also can affect the residual shear strength. Smectites, in particular, can exhibit dramatic strengthening upon exposure to a concentrated salt solution. Few researchers have begun to evaluate the residual shear strength while also controlling the temperature during testing. Results demonstrated both strengthening and weakening upon heating, depending on soil composition. Owing to the coupled nature of hydraulic, thermal, chemical, and mechanical processes in soil, coupled effects also are expected; however, these effects are largely unexplored. We performed ring-shear experiments on pure clays and natural soils to obtain some insight into these coupled effects. We observed, for instance, that the effect of temperature fades away as the rate of shearing increases or the clay fraction decreases. We also observed some relationship between the shear rate effect and pore fluid composition. Understanding coupled processes in soils remains challenging; however, experiments may help improve our understanding of field-scale events, such as landslide reactivation and runout upon complex changes in boundary conditions.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10505 - Geology

Project

<a href="/en/project/LL2316" target="_blank" >LL2316: Thermally-induced instability of slopes under climate change</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the XVIII ECSMGE 2024

ISBN

978-1-03-254816-6

ISSN

—

e-ISSN

—

Number of pages

5

Pages from-to

1325-1329

Publisher name

CRC Press

Place of publication

Boca Raton, FL

Event location

Lisbon

Event date

Aug 26, 2024

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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