Investigation of the Effect of Temperature on the Undrained Shear Strength of Kaolinite

Document Type : Research Article

Authors

Department of Structural and Engineering Geology, School of Geology, College of Science, University of Tehran

Abstract

Investigation of the effect of temperature on soil strength is one of the issues which has been considered by many researchers in recent decades. In this study to investigate the effect of temperature on the undrained shear strength (Cu) of clay soils, a cell with the capability of both changing and keeping fixed the temperature of sample, was designed and constructed. After determining the index properties of samples for Kaolinite clay soil, undrained shear strength (Cu) test was carried out on saturated clay soil at 10, 20, 30, 40, 50, 60 and 70 ° C. Repeatability of the results was confirmed by repeating tests on samples with the same properties a given temperature. The results showed that by increasing the temperature, the Cu values decreased so that, as the temperature raised from 10 ° C to 70 ° C, the values Cu were reduced from 26.6 to 10.94 kPa. Accordingly, in the studied temperature range, an empirical relationship between temperature and Cu (with R2 = 0.96) was proposed. The general shape of the stress–strain curves of the samples in different temperature was the same and in strain level of 20% was linear. Increasing the temperature caused to decline in the range of elastic deformation and enhancement in the range of plastic deformation of the samples; in addition, by increasing the temperature, the angle of the failure plane was decreased. The measurement of axial expansion stress (AES) indicated enhancement of the stress by increasing the temperature.

Keywords

Main Subjects

References

[1]R.G. Campanella, J.K, Mitchell, Influence of temperature variations on soil behavior, Journal of Soil Mechanics & Foundations Div. 1968.
[2]C. Cekerevac, L. Laloui, Experimental study of thermal effects on the mechanical behaviour of a clay, International journal for numerical and analytical methods in geomechanics, 3(28) (2004) 228-209.
[3]D. De Bruyn, J.F. Thimus, The influence of temperature on mechanical characteristics of Boom clay: the results of an initial laboratory programme, Engineering Geology, -1(41(4 (1996) 126-117.
[4]L. Laloui, Thermo-mechanical behaviour of soils, Revue française de génie civil, 6(5( (2001) 843-809.
[5]N. Yavari, A.M. Tang, J.M. Pereira, G. Hassen, Effect of temperature on the shear strength of soils and the soil– structure interface, Canadian Geotechnical Journal, 7(53( (2016), 1194-1186.
[6]A. Di Donna, A. Ferrari, L. Laloui, Experimental investigations of the soil–concrete interface: physical mechanisms, cyclic mobilization, and behaviour at different temperatures, Canadian Geotechnical Journal, 4(53( (2015) 672-659.
[7]Li, H., Zhu, Y., Zhang, J. and Lin, C., 2004. “Effects of temperature, strain rate and dry density on compressive strength of saturated frozen clay” Cold regions science and technology, 1(39(, pp.45-39.
[8]M.R. Shirazi, Effect of Temperature on hydro-mechanical behavior of compacted expansive soil, Doctoral dissertation, Eastern Mediterranean University (EMU(Doğu Akdeniz Üniversitesi (DAÜ) (2014).
[9]T. Hueckel, R. Pellegrini, Effective stress and water pressure in saturated clays during heating–cooling cycles, Canadian Geotechnical Journal, 6(29( (1992) 1102-1095.
[10]W.Z. Chen, Y.S. Ma, H.D. Yu, F.F. Li, X.L. Li, X., Sillen, Effects of temperature and thermally-induced microstructure change on hydraulic conductivity of Boom Clay, Journal of Rock Mechanics and Geotechnical Engineering, 3(9( (2017) 395-383.
[11]G. Baldi, T. Hueckel, R. Pellegrini Thermal volume changes of the mineral–water system in low-porosity clay soils, Canadian geotechnical journal, 4(25( (1988)825 -807 .
[12]YJ. Cui, N. Sultan, P. Delage, A thermomechanical model for saturated clays”, Canadian Geotechnical Journal, 3(37( (2000) 620-607.
[13]H.M. Abuel-Naga, D.T. Bergado, A., Bouazza, Thermally induced volume change and excess pore water pressure of soft Bangkok clay, Engineering Geology, 2-1(89( (2007) 154-144.
[14]C. Li, G. Kong, H. Liu, H. Abuel-Naga, Effect of temperature on behavior of red clay–structure interface. Canadian Geotechnical Journal, 1(56( (2018) 134-126.
[15]H. Yu, W. Chen, Z. Gong, Y. Ma, G. Chen, X. Li, Influence of temperature on the hydro-mechanical behavior of Boom Clay. International Journal of Rock Mechanics and Mining Sciences, 108, (2018)197-189 .
[16]R. Bag, A. Rabbani, A., Effect of temperature on swelling pressure and compressibility characteristics of soil. Applied Clay Science, (2017)136 , 7-1.
[17]J. Graham, N. Tanaka, T. Crilly, M. Alfaro, Modified CamClay modelling of temperature effects in clays, Canadian geotechnical journal, 3(38( (2007) 621-608.
[18]P. Kuntiwattanakul, I. Towhata, K.hishi, I., Seko, Temperature effects on undrained shear characteristics of clay, Soils and Foundations, 1(35( (1995) 162-147.
[19]S.L. Houston, W.N. Houston, N.D. Williams, Thermomechanical behavior of seafloor sediments, Journal of Geotechnical Engineering, 11(111( (1995) 1263-1249.
[20]A. Burghignoli, A. Desideri, S., Miliziano, Deformability of clays under non isothermal conditions, RIG, 4 (1992).
[21]K.H. Head, R., Epps, Manual of soil laboratory testing 1, (2( (1980), London: Pentech Press.
[22]G.P. Tschebotarioff, Foundations, retaining and earth structures, (1973) McGraw-Hill Book.
[23]J.V. Parcher, R.E. Means, Soil mechanics and foundations, (1968) Charles E. Merrill, Columbus, Ohio.
[24]K. Terzaghi, R.B. Peck, G. Mesri, Soil mechanics in engineering practice, (1996) John Wiley & Sons.
[25]M.D. Braja, Advanced soil mechanics, (2008) Taylor & Francis, 270, pp.180-170.
Amirkabir Journal of Civil Engineering
Volume 52, Issue 8
November 2020
Pages 1971-1982

Files

Share

How to cite

Statistics