Abstract
The thermal responses of the saturated silty clay to repeated heating–cooling are studied in laboratory. Results show that the pore pressure induced by undrained heating increases with increasing temperature, but the peak pore pressure appears a degradation trend with increasing temperature cycles. During the consolidation process at an elevated temperature, the specimen contracts due to the dissipation of the pore pressure; however, the thermally induced pore pressure is under no conditions fully dissipated to zero, therefore, there always exists a residual pore pressure in the specimens once a thermal loading higher than the ambient temperature is applied. During the undrained cooling, pore pressure continues to decline and eventually falls below zero. During the isothermal consolidation at the original temperature, the specimen begins to expand due to water absorption caused by the negative pore pressure, and eventually reaches a steady value. In addition, the consolidation volumetric strain generated during the drainage process at 50°C is greater than that during the water absorption process at 25°C, the difference seems to be most obvious for the first three cycles, and begins to diminish gradually thereafter.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Abbreviations
- w L :
-
Liquid limit
- w P :
-
Plastic limit
- I P :
-
Plasticity index
- G s :
-
Specific gravity of solids
- w :
-
Water content
- γ d :
-
Dry unit weight
- e :
-
Void ratio
- S r :
-
Degree of saturation
- \({\sigma _{3}^{\prime}}\) :
-
Confining pressure
- u :
-
Pore pressure
- N :
-
Number of heating–cooling cycle
- \({u/\sigma_{\rm 3}^{\prime}}\) :
-
Normalized pore pressure
- \({\varepsilon _{\rm v}}\) :
-
Consolidation volumetric strain
- \({(u/\sigma_{3}^{\prime})_{\rm peak}}\) :
-
Normalized peak pore pressure
- a :
-
Fitting parameter
- b :
-
Fitting parameter
- c :
-
Fitting parameter
- d :
-
Fitting parameter
- R 2 :
-
Coefficient of determination
References
Abuel H.M., Bergado D.T., Bouazza A.: Volume change behaviour of saturated clays under drained heating conditions: experimental results and constitutive modeling. Can. Geotech. J. 44(8), 942–956 (2007)
Bai B.: Fluctuation responses of saturated porous media subjected to cyclic thermal loading. Comput. Geotech. 33(4), 396–403 (2006)
Bai B., Chen X.X.: Test apparatus for thermal consolidation of saturated soils and its application. Chin. J. Geotech. Eng. 33(6), 896–900 (2011)
Blond E., Schmitt N., Hild F.: Responses of saturated porous media to cyclic thermal loading. Int. J. Numer. Anal. Methods Geomech. 27(11), 883–904 (2003)
Burghignoli A., Desideri A., Miliziano S.: A laboratory study on the thermomechanical behaviour of clayey soils. Can. Geotech. J. 37(4), 764–780 (2000)
Cekerevac C., Laloui L., Vulliet L.: A novel triaxial apparatus for thermo-mechanical testing of soils. Geotech. Test. J. 28(2), 161–170 (2005)
Cui Y.J., Lu Y.F., Delage P.: Field simulation of in situ water content and temperature changes due to ground–atmospheric interactions. Geotechnique 55(7), 557–567 (2005)
Delage P., Sultan N., Cui Y.J.: On the thermal consolidation of Boom clay. Can. Geotech. J. 37(4), 343–354 (2000)
Ghabezloo S., Sulem J.: Temperature induced pore fluid pressurization in geomaterials. Ital. Geotech. J. 1, 29–43 (2010)
Graham J., Tanaka N., Crilly T., Alfaro M.: Modified Cam-Clay modelling of temperature effects in clays. Can. Geotech. J. 38(3), 608–621 (2001)
Khalili N., Uchaipichat A., Javadi A.A.: Skeletal thermal expansion coefficient and thermo-hydro-mechanical constitutive relations for saturated homogeneous porous media. Mech. Mater. 42, 593–598 (2010)
Laloui L., Cekerevac C.: Thermo-plasticity of clays: an isotropic yield mechanism. Comput. Geotech. 30(8), 649–660 (2003)
Monfared M., Delage P., Sulem J., Mohajerani M., Tang A.M., Tang A.M., Tang A.M.: A new hollow cylinder triaxial cell to study the behavior of geo-materials with low permeability. Int. J. Rock Mech. Min. Sci. 48, 637–649 (2011)
Rice J.R.: Heating and weakening of faults during earthquake slip. J. Geophys. Res. 111(5), 311–316 (2006)
Sultan N., Delage P., Cui Y.J.: Temperature effects on the volume change behaviour of Boom clay. Eng. Geol. 64(2–3), 135–145 (2002)
Yilmaz G.: The effects of temperature on the characteristics of kaolinite and bentonite. Sci. Res. Essays 6(9), 1928–1939 (2011)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Bai, B., Su, Z. Thermal Responses of Saturated Silty Clay During Repeated Heating–Cooling Processes. Transp Porous Med 93, 1–11 (2012). https://doi.org/10.1007/s11242-012-9939-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11242-012-9939-6