Influence of temperature on the residual shear strength of landslide soil: role of the clay fraction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F25%3A00637665" target="_blank" >RIV/67985891:_____/25:00637665 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/25:10499889
Result on the web
<a href="https://doi.org/10.1007/s10064-025-04405-w" target="_blank" >https://doi.org/10.1007/s10064-025-04405-w</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10064-025-04405-w" target="_blank" >10.1007/s10064-025-04405-w</a>
Alternative languages
Result language
angličtina
Original language name
Influence of temperature on the residual shear strength of landslide soil: role of the clay fraction
Original language description
The occurrence and fate of landslides are, among other factors, controlled by the shear strength of the materials involved and by how this strength changes during the landslide process. Temperature affects the strength of pure clays according to their mineralogy, stress history, and hydro-mechanical boundary conditions. However, natural soils often consist of heterogeneous mixtures of various clay and non-clay minerals. The effect of temperature on the residual shear strength of low-plasticity soils, in particular, remains poorly understood. To address this gap, ring-shear experiments were conducted on remoulded soil samples from a landslide-prone portion of the Melamchi Catchment in Nepal. The tests were performed in water-saturated conditions under representative normal stresses (50, 100, 150 kPa) and a constant rate of shearing (0.1 mm/min). Specimens with clay fractions ranging from 10 to 24% were subjected to heating-cooling cycles (20-50-20 degrees C) after attaining the residual shear condition. The results were analysed statistically, and a t-test was implemented to discern possible thermal effects from the experimental noise. A decrease in residual friction angle by up to 1 degrees upon heating (thermal weakening) was seen in specimens richer in clay under larger normal stresses. However, the effect was non-significant in many cases, suggesting a minor role of thermo-mechanical coupling in shear zones of slow-moving landslides. Further research encompassing a wider range of soil compositions is warranted to better quantify the influence of temperature on the shear strength of landslide soils.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/LL2316" target="_blank" >LL2316: Thermally-induced instability of slopes under climate change</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Bulletin of Engineering Geology and the Environment
ISSN
1435-9529
e-ISSN
1435-9537
Volume of the periodical
84
Issue of the periodical within the volume
8
Country of publishing house
DE - GERMANY
Number of pages
20
Pages from-to
394
UT code for WoS article
001526105400001
EID of the result in the Scopus database
2-s2.0-105010152846