Undrained behavior of compacted sand-clay mixtures under monotonic loading paths

被引：19

作者：

Shafiee, A. ^{[1
]}

Tavakoli, H.R. ^{[1
]}

Jafari, M.K. ^{[1
]}

机构：

[1] Geotechnical Engineering Research Center, International Institute of Earthquake Engineering and Seismology, Tehran

来源：

Journal of Applied Sciences | 2008年 / 8卷 / 18期

关键词：

Compression; Extension; Pore pressure; Secant modulus; Shear strength;

D O I：

10.3923/jas.2008.3108.3118

中图分类号：

学科分类号：

摘要：

This study describes an experimental study on compacted sand-clay mixtures to investigate pre-failure and failure characteristics of such mixtures under monotonic compression and extension loading paths. Results reveal that pore pressure, secant modulus, undrained shear strength and angle of shearing resistance increase when sand content was raised in both compression and extension. It was also found that the tested materials were overconsolidated by the fact that normalized shear strength depends on initial confining stress. The compacted sand-clay mixtures exhibit anisotropy in mechanical behavior so that undrained shear strength and angle of shearing resistance were greater in compression than in extension. The extent of the anisotropy increases with sand content. © 2008 Asian Network for Scientific Information.

引用

页码：3108 / 3118

页数：10

共 19 条

[1]

Abichou T., Benson C.H., Edil T.B., Micro-structure and hydraulic conductivity of simulated sand-bentonite mixtures, Clays Clay Minerals, 50, pp. 537-545, (2002)

[2]

Chandler R.J., The in situ Measurement of the Undrained Shear Strength of Clays Using the Field Vane, STP 1014, Strength Testing in Soils: Field and Laboratory Studies, pp. 13-44, (1988)

[3]

Chapuis R.P., Sand-bentonite liners: Predicting permeability from laboratory tests, Canadian Geotech J., 27, pp. 47-57, (1990)

[4]

Duncan J.M., Seed H.B., Strength variation along failure surface in clay, J. Soil Mech. Foundat. Division ASCE., 92, pp. 81-104, (1966)

[5]

Fragaszy R.J., Su J., Siddiqi F., Carlton L.H., Modeling strength of sandy gravel, J. Geotech. Eng., 118, pp. 920-935, (1992)

[6]

Ishihara K., Tatsuoka F., Yasuda S., Undrained deformation and liquefaction of sand under cyclic stresses, Soils Foundations, 15, pp. 19-44, (1975)

[7]

Jafari M.K., Shafiee A., Mechanical behavior of compacted composite clays, Can. Geotech. J., 41, pp. 1152-1167, (2004)

[8]

Ladd R.S., Preparing test specimens using undercompaction, Geotech. Testing J., 1, pp. 39-49, (1978)

[9]

Muir Wood D., Kumar G., Experimental observations of behaviour of heterogeneous soils, Mech. Cohesive-Frictional Mater., 5, pp. 373-398, (2000)

[10]

Muir Wood D., Geotechnical modeling, (2004)

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