Experimental study on effect of temperature on shear behavior of saturated clays

FEI Kang; ZHOU Ying; FU Chang-yun

doi:10.11779/CJGE202009012

Volume 42 Issue 9

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Chinese Journal of Geotechnical Engineering > 2020 > 42(9): 1679-1686. > DOI: 10.11779/CJGE202009012

FEI Kang, ZHOU Ying, FU Chang-yun. Experimental study on effect of temperature on shear behavior of saturated clays[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(9): 1679-1686. DOI: 10.11779/CJGE202009012

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Experimental study on effect of temperature on shear behavior of saturated clays

Institute of Geotechnical Engineering, Yangzhou University, Yangzhou 225127, China

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Received Date: November 17, 2019
Available Online: December 07, 2022

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Abstract

Abstract

The effect of temperature on shear behavior of saturated clays is investigated by means of the temperature-controlled triaxial tests. Two kinds of normally consolidated saturated clays are tested. The test program involves different heating and consolidation sequences and drained conditions. The influences of the temperature change on the shear strength, the stress-strain relationship, the excess pore water pressure response and the flow rule are analyzed. The experimental results show that the temperature change significantly affects the shear behavior of the clay, while the temperature effect on the shear behavior of the silty clay is negligible. An increase in temperature increases the undrained and drained peak strength, but the critical friction angle does not change. The excess pore water pressures built up during undrained shear of clay specimens at different temperatures are all found to be positive, and the volume changes under drained shear are always contractive. It implies the reason that the stress-strain softening behavior at high temperature is not shear dilatancy, which is usually used to explain the softening behavior of heavily over-consolidated clays. The temperature effect on the shear behavior is also relevant with the temperature-stress path. The undrained shear strength of the specimen subjected to heat after consolidation is smaller than that of the specimen first heated. After a temperature cycle, the undrained shear strength increases markedly.
- clay,
- silty clay,
- triaxial test,
- shear behavior,
- temperature effect

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References (21)

References

[1]	刘汉龙, 孔纲强, 吴宏伟. 能量桩工程应用研究进展及PCC能量桩技术开发[J]. 岩土工程学报, 2014, 36(1): 176-181. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201401024.htm LIU Han-long, KONG gang-qiang, NG C W W. Applications of energy piles and technical development of PCC energy piles[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(1): 176-181. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201401024.htm
[2]	BRANDL H. Energy foundations and other thermo-active ground structures[J]. Géotechnique, 2006, 56(2): 81-122. doi: 10.1680/geot.2006.56.2.81
[3]	NOBLE C A, DEMIREL T. Effect of Temperature on Strength Behavior of Cohesive Soil[M]. Washington D C: Highway Research Board, Special Report 103, 1969: 204-219.
[4]	UCHAIPICHAT A, KHALILI N. Experimental investigation of thermo-hydro-mechanical behaviour of an unsaturated silt[J]. Géotechnique, 2009, 59(4): 339-353. doi: 10.1680/geot.2009.59.4.339
[5]	SHERIF M A, BURROUS C M. Temperature Effects on the Unconfined Shear Strength of Saturated, Cohesive Soil[M]. Washington D C: Highway Research Board, Special Report 103, 1969: 267-272.
[6]	MITCHELL J K, SOGA K. Fundamentals of Soil Behavior[M]. New York: John Wiley & Sons, 2005.
[7]	LADD C C. Physico-Chemical Analysis of the Shear Strength of Saturated Clays[D]. Cambridge: Massachusetts Institute of Technology, 1961.
[8]	KUNTIWATTANAKUL P, TOWHATA I, OHISHI K, et al. Temperature effects on undrained shear characteristics of clay[J]. Soils and Foundations, 1995, 35(1): 147-162. doi: 10.3208/sandf1972.35.147
[9]	TANAKA N, GRAHAM J, CRILLY T. Stress-strain behaviour of reconstituted illitic clay at different temperatures[J]. Engineering Geology, 1997, 47(4): 339-350. doi: 10.1016/S0013-7952(96)00113-5
[10]	YAO Y P, ZHOU A N. Non-isothermal unified hardening model: a thermo-elasto-plastic model for clays[J]. Géotechnique, 2013, 63(15): 1328-1345. doi: 10.1680/geot.13.P.035
[11]	白冰, 赵成刚. 温度对黏性土介质力学特性的影响[J]. 岩土力学, 2003, 24(4): 533-537. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200304012.htm BAI Bing, ZHAO Cheng-gang. Temperature effects on mechanical characteristics of clay soils[J]. Rock and Soil Mechanics, 24(4): 533-537. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200304012.htm
[12]	ZHOU C, FONG K Y, NG C W W. A new bounding surface model for thermal cyclic behaviour[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 2017, 41(16): 1656-1666. doi: 10.1002/nag.2688
[13]	ABUEL-NAGA H M, BERGADO D T, LIM B F. Effect of temperature on shear strength and yielding behavior of soft Bangkok clay[J]. Soils and Foundations, 2007, 47(3): 423-436. doi: 10.3208/sandf.47.423
[14]	GRAHAM J, TANAKA N, CRILLY T, et al. Modified Cam-Clay modelling of temperature effects in clays[J]. Canadian Geotechnical Journal, 2001, 38(3): 608-621. doi: 10.1139/t00-125
[15]	GHAHREMANNEJAD B. Thermo-Mechanical Behaviour of Two Reconstituted Clays[D]. Sydney: University of Sydney, 2003.
[16]	BAI B, YANG G, LI T, et al. A thermodynamic constitutive model with temperature effect based on particle rearrangement for geomaterials[J]. Mechanics of Materials, 2019, 139: 103180. doi: 10.1016/j.mechmat.2019.103180
[17]	杨光昌, 白冰. 基于颗粒物质热动力学理论的非饱和土热水力耦合模型研究[J]. 岩土工程学报, 2019, 41(9): 1688-1697. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201909014.htm YANG Guang-chang, BAI Bing. A thermo-hydro- mechanical coupled model for unsaturated soils based on thermodynamic theory of granular matter[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(9): 1688-1697. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201909014.htm
[18]	XIONG Y, YANG Q, SANG Q, et al. A unified thermal-hardening and thermal-softening constitutive model of soils[J]. Applied Mathematical Modelling, 2019, 74: 73-84. doi: 10.1016/j.apm.2019.04.034
[19]	马时冬. 拟似超固结黏土的应力-应变-强度特性[J]. 岩土工程学报, 1987, 9(1): 53-60. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC198701005.htm MA Shi-dong. On the stress-strain-strength characteristics of quasi- overconsolidated clay[J]. Chinese Journal of Geotechnical Engineering, 1987, 9(1): 53-60. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC198701005.htm
[20]	费康, 戴迪, 付长郓. 热–力耦合作用下黏土体积变形特性试验研究[J]. 岩土工程学报, 2019, 41(9): 1752-1758. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201909023.htm FEI Kang, DAI Di, FU Chang-yun. Experimental study of the volume change behavior of clay subjected to thermo-mechanical loads[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(9): 1752-1758. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201909023.htm
[21]	DI D A, LALOUI L. Response of soil subjected to thermal cyclic loading: experimental and constitutive study[J]. Engineering Geology, 2015, 190: 65-76.