RT Journal Article
T1 Anomalous behaviour of fine-grained transition soils from the San Cayetano Formation (Loja, Ecuador)
A1 Esparza, Carmen
A1 Lamas, Francisco
A1 Soto, John
A1 Azañón, J.M.
A1 Ruano, Patricia
A1 Tamay, José
A1 Martínez Moreno, Francisco José
AB Numerous landslides, either natural or produced by excavations in road works, occur in the intramontane Neogene Loja basin (southern Ecuadorian Andes) and can be associated with the clayey silts, low plasticity soils (ML). Thirty-two undisturbed samples from eight sites were tested in laboratory to characterize the stress-strain geotechnical soil response, showing a higher internal friction angle and higher cohesion with respect to the standard ML soil values. A testing profile of a road constructed on these soils has been modeled using finite element methods to calculate both the safety factor and the mechanism of evolution. Anomalous behavior is evidenced when a standard ML soil type is considered in the model, with a higher security factor than the less stable and more susceptible ML soils of Loja basin. Therefore, this contribution may serve as a warning to designers and engineers when constructing new structures on these soils. Additionally, it enables the identification of the most effective test for assessing high susceptibility in ML soils, contributing to the refinement and enhancement of methodological procedures during project execution.
PB Elsevier
SN 0895-9811
YR 2024
FD 2024-07-15
LK https://hdl.handle.net/20.500.14352/103973
UL https://hdl.handle.net/20.500.14352/103973
LA eng
NO Esparza, Carmen, et al. «Anomalous Behaviour of Fine-Grained Transition Soils from the San Cayetano Formation (Loja, Ecuador)». Journal of South American Earth Sciences, vol. 140, julio de 2024, p. 104922. DOI.org (Crossref), https://doi.org/10.1016/j.jsames.2024.104922.
NO MICIU/AEI 10.13039/501100011033
NO European Commission
NO Universidad Técnica Particular de Loja, Ecuador
DS Docta Complutense
RD 7 jun 2025