Pore-Water Pressure and Shear Characteristics of Lateritic Clay under Different Temperature Paths
Publication: International Journal of Geomechanics
Volume 24, Issue 12
Abstract
The thermal-induced pore-water pressure and shear characteristics of lateritic clay under different temperature paths without drainage are studied through a series of temperature-controlled undrained triaxial shear tests with temperatures ranging from 5°C to 50°C. The effects of different temperature paths under undrained conditions on pore-water pressure and shear behavior are discussed. The results indicate that monotonic heating and multistage heating have equivalent effects on the accumulation of pore-water pressure when the initial temperature and target temperature are the same. The initial positive pore-water pressure induced by heating leads to a lower bearing capacity during the early stage of the shearing process. The secant elastic modulus (εa = 0.1%) shows a significant decrease with increasing temperature, suggesting that mechanical properties at small strains are influenced by temperature. However, undrained heating has no influence on the shear strength finally. Furthermore, under undrained conditions, temperature variations do not alter the unique relationships among void ratio, deviator stress, and mean effective stress.
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Data Availability Statement
All data, models, and codes generated or used during the study appear in the published article.
Acknowledgments
The study was supported by the National Natural Science Foundation of China (No. 4240070651), the Changzhou University Talent Introduction Project (No. ZMF23020066), and the Changzhou Leading Innovative Talent Introduction and Cultivation Project (No. KYZ23020054).
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International Journal of Geomechanics
Volume 24 • Issue 12 • December 2024
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© 2024 American Society of Civil Engineers.
History
Received: Feb 6, 2024
Accepted: Jun 26, 2024
Published online: Sep 23, 2024
Published in print: Dec 1, 2024
Discussion open until: Feb 23, 2025
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