Effect of Fines on Liquefaction Susceptibility of Sandy Soil

Authors: Ayad Salih Sabbar, Amin Chegenizadeh, Hamid Nikraz

Abstract:

Investigation of liquefaction susceptibility of materials that have been used in embankments, slopes, dams, and foundations is very essential. Many catastrophic geo-hazards such as flow slides, declination of foundations, and damage to earth structure are associated with static liquefaction that may occur during abrupt shearing of these materials. Many artificial backfill materials are mixtures of sand with fines and other composition. In order to provide some clarifications and evaluations on the role of fines in static liquefaction behaviour of sand sandy soils, the effect of fines on the liquefaction susceptibility of sand was experimentally examined in the present work over a range of fines content, relative density, and initial confining pressure. The results of an experimental study on various sand-fines mixtures are presented. Undrained static triaxial compression tests were conducted on saturated Perth sand containing 5% bentonite at three different relative densities (10, 50, and 90%), and saturated Perth sand containing both 5% bentonite and slag (2%, 4%, and 6%) at single relative density 10%. Undrained static triaxial tests were performed at three different initial confining pressures (100, 150, and 200 kPa). The brittleness index was used to quantify the liquefaction potential of sand-bentonite-slag mixtures. The results demonstrated that the liquefaction susceptibility of sand-5% bentonite mixture was more than liquefaction susceptibility of clean sandy soil. However, liquefaction potential decreased when both of two fines (bentonite and slag) were used. Liquefaction susceptibility of all mixtures decreased with increasing relative density and initial confining pressure.  

Keywords: Bentonite, brittleness index, liquefaction, slag.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1315422

References:

[1] Chheda, T., et al. The Physics and Mechanics of Liquefaction. in 2014 GSA Annual Meeting in Vancouver, British Columbia. 2014.
[2] Youd, T.L. and D.M. Perkins, Mapping liquefaction-induced ground failure potential. Journal of the Soil Mechanics and Foundations Division, 1978. 104(4): p. 433-446.
[3] Seed, H.B. and I.M. Idriss, Ground motions and soil liquefaction during earthquakes. Vol. 5. 1982: Earthquake Engineering Research Institute.
[4] Vaid, Y. and S. Sivathayalan, Fundamental factors affecting liquefaction susceptibility of sands. Canadian Geotechnical Journal, 2000. 37(3): p. 592-606.
[5] NRC, N.R.C., Liquefaction of soils during earthquakes. Vol. 1. 1985: National Academies.
[6] Kramer, S.L., Geotechnical earthquake engineering. 1996: Prentice Hall, Upper Saddle River (NJ).
[7] Yamamuro, J.A. and P.V. Lade, Static liquefaction of very loose sands. Canadian Geotechnical Journal, 1997. 34(6): p. 905-917.
[8] Liu, J., et al., Static liquefaction behavior of saturated fiber-reinforced sand in undrained ring-shear tests. Geotextiles and Geomembranes, 2011. 29(5): p. 462-471.
[9] Georgiannou, V., J. Burland, and D. Hight, The undrained behaviour of clayey sands in triaxial compression and extension. Geotechnique, 1990. 40(3): p. 431-449.
[10] Igwe, O., K. Sassa, and H. Fukuoka, Liquefaction potential of granular materials using differently graded sandy soils. 2004.
[11] Ishihara, K., Liquefaction and flow failure during earthquakes. Geotechnique, 1993. 43(3): p. 351-451.
[12] Ishihara, K., Y. Tsukamoto, and K. Kamada. Undrained behavior of near-saturated sand in cyclic and monotonic loading. in Proc. Conf., Cyclic Behavior of Soils and Liquefaction Phenomena. 2004.
[13] Konrad, J., Undrained response of loosely compacted sands during monotonic and cyclic compression tests. Géotechnique, 1993. 43(1): p. 69-89.
[14] Sadrekarimi, A., Effect of the mode of shear on static liquefaction analysis. Journal of Geotechnical and Geoenvironmental Engineering, 2014. 140(12): p. 04014069.
[15] Thevanayagam, S., Effect of fines and confining stress on undrained shear strength of silty sands. Journal of Geotechnical and Geoenvironmental Engineering, 1998. 124(6): p. 479-491.
[16] Seed, H.B., I. Idriss, and I. Arango, Evaluation of liquefaction potential using field performance data. Journal of Geotechnical Engineering, 1983. 109(3): p. 458-482.
[17] Pitman, T., P. Robertson, and D. Sego, Influence of fines on the collapse of loose sands. Canadian Geotechnical Journal, 1994. 31(5): p. 728-739.
[18] Rahman, M.M. and S. Lo, Undrained behavior of sand-fines mixtures and their state parameter. Journal of Geotechnical and Geoenvironmental Engineering, 2014. 140(7): p. 04014036.
[19] Thevanayagam, S. and G.R. Martin, Liquefaction in silty soils—screening and remediation issues. Soil Dynamics and Earthquake Engineering, 2002. 22(9): p. 1035-1042.
[20] Yang, S., S. Lacasse, and R. Sandven, Determination of the transitional fines content of mixtures of sand and non-plastic fines. Geotechnical Testing Journal, 2006. 29(2): p. 102.
[21] Belhouari, F., et al., Undrained Static Response of Loose and Medium Dense Silty Sand of Mostaganem (Northern Algeria). Arabian Journal for Science and Engineering, 2015. 40(5): p. 1327-1342.
[22] Yang, J. and L. Wei, Collapse of loose sand with the addition of fines: the role of particle shape. Geotechnique, 2012. 62(12): p. 1111-1125.
[23] Yamamuro, J.A. and K.M. Covert, Monotonic and cyclic liquefaction of very loose sands with high silt content. Journal of Geotechnical and Geoenvironmental Engineering, 2001. 127(4): p. 314-324.
[24] Bishop, A.W. Shear strength parameters for undisturbed and remoulded soil specimens. in Proceedings of the Roscoe Memorial Symposium, Cambridge University, Cambridge, Mass. 1971.
[25] Budihardjo, M.A., A. Chegenizadeh, and H. Nikraz, Application of Wood to Sand-slag and its Effect on Soil Strength. Procedia Engineering, 2015. 102: p. 640-646.
[26] Sabbar, A.S., A. Chegenizadeh, and H. Nikraz, Experimental Investigation on the Shear Strength Parameters of Sand-Slag Mixtures. International Journal of Geotechnical and Geological Engineering 2017. 11(3): p. 212-217.
[27] Sabbar, A., A. Chegenizadeh, and H. Nikraz, A Review of the experimental studies of the cyclic behaviour of granular materials: Geotechnical and pavement engineering. Australian Geomechanics Journal, 2016. 51(2): p. 89-103.
[28] Sabbar, A.S., A. Chegenizadeh, and H. Nikraz, Static liquefaction of very loose sand–slag–bentonite mixtures. Soils and Foundations, 2017. 57: p. 341-356.
[29] Head, K., Manual of soil laboratory testing: volume 3: Effective Stress Tests. Third ed. 2014, Scotland, UK: Whittles Publishing.
[30] Tang, X., L. Ma, and Q. Shao, Experimental Investigation on Effect of Bentonite Content to the Liquefaction Potential in Saturated Sand. Electronic Journal of Geotechnical Engineering, 2013. 18: p. 1409-1417.
[31] Tang, X.W., L. Ma, and S. Dieudonné. Influence of Bentonite Content on the Static Liquefaction Behavior of Sand. in Advanced Materials Research. 2013. Trans Tech Publ.
[32] Gratchev, I.B., et al., Undrained cyclic behavior of bentonite–sand mixtures and factors affecting it. Geotechnical and Geological Engineering, 2007. 25(3): p. 349.