RT info:eu-repo/semantics/conferencePaper
T1 Temperature effects on the mechanical behavior of saline soils stabilized with lime
T2 Effets de la température sur le comportement mécanique des sols salins stabilisés à la chaux
A1 Bittar Marín, Eduardo José
A1 Quiñónez Samaniego, Rubén Alejandro
A1 López, Rubén Alcides
A2 Universidad Nacional de Asunción. Facultad de Ingeniería
AB Several problems related to earthen structures have been registered in the Occidental region of Paraguay known as the Paraguayan Chaco. Sedimentary fine sand and silty clay soils containing salts are typically found in this region, and these salts are mainly conformed by sodium chlorides, sodium sulfates, and calcium sulfates. In the Paraguayan Chaco, dispersive soils also known as erodible soils, were responsible for the failure of a number of slopes and embankments whereas sulfated soils caused several damages over hundreds of kilometers of pavements conformed by soil- lime bases and sub-bases. This work seeks to evaluate the use of lime in the improvement of the mechanical behavior of both dispersive and sulfated soils. To achieve that, unconfined compression tests, durability tests, and expansion tests are performed on dispersive and sulfated soils stabilized with different lime contents, dry unit weights and curing times. Moreover, two temperatures (23°C and 40°C) are assessed in the molding of specimens, considering the high temperatures commonly developed in this region. It is observed that the use of lime is efficient in the stabilization of dispersive soils, eliminating dispersive phenomenon and improving the strength and durability of the new geomaterial. However, in the case of sulfated soils, high swelling besides poor strength and durability evident that lime stabilization technique may be a new problem instead of a solution. Additionally, it is shown that subjecting soil-lime samples to 40°C improves the performance of the geomaterials conformed by both dispersive and sulfated soils.
PB Australian Geomechanics Society
SN 978-0-9946261-4-1
YR 2022
FD 2022
LK http://hdl.handle.net/20.500.14066/4877
UL http://hdl.handle.net/20.500.14066/4877
LA eng
NO Bittar, E., Quiñonez, A., & López, R. (2022). Temperature effects on the mechanical behavior of saline soils stabilized with lime. En M. Jaksa & M. Rahman (Eds.), Proceedings of the 20th International Conference on Soil Mechanics and Geotechnical Engineering (20ICSMGE) (pp. 2819-2827). Australian Geomechanics Society.https://www.issmge.org/publications/online-library
NO Correspondencia: ebittar@ing.una.py.
NO Consejo Nacional de Ciencia y Tecnología
DS MINDS@UW
RD 30-oct-2026