Effectiveness of Geosynthetics at Preventing Subgrade Instability under Cyclic Loading
Publication: Geo-Congress 2023
ABSTRACT
Recent laboratory investigations indicate that low-to-medium plasticity subgrade is vulnerable to subgrade fluidisation due to excessive local hydraulic gradients that develop under cyclic loading. This study primarily investigates the role of geosynthetics to dissipate accumulated excess pore water pressure (EPWP), and minimise particle migration and subgrade fluidisation in typical railway track environments using the dynamic filtration apparatus (DFA). The experiments indicate there is an upward migration of moisture and fine particles towards the ballast-subgrade interface which cause the soil specimen to soften (slurry) under undrained cyclic tests. The combined prefabricated vertical drains (PVDs) and geocomposite system can dissipate the rapid accumulation of EPWPs due to the reduction in drainage path lengths and additional confinement at the ballast and subgrade interface. The excess pore pressure gradients (EPPG) that developed at different depths of the soil specimens were measured to assess the potential for the upward migration of fine particles.
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REFERENCES
Abeywickrama, A., Indraratna, B., Nguyen, T., and Rujikiatkamjorn, C. 2021. “Laboratory Investigation on the Use of Vertical Drains to Mitigate Mud Pumping under Rail Tracks”, Australian Geomechanics Journal, vol. 56, no. 3, pp. 117–26.
Alobaidi, I., and Hoare, D. J. 1996. “The development of pore water pressure at the subgrade-subbase interface of a highway pavement and its effect on pumping of fines”, Geotextiles and geomembranes, vol. 14, no. 2, pp. 111–35.
Alobaidi, I. M. 1991. Some aspects of the role of geocomposites in controlling pumping of fines, PhD Thesis, University of Birmingham, United Kingdom, p. 360.
Arivalagan, J., Indraratna, B., Rujikiatkamjorn, C., and Warwick, A. 2022. “Effectiveness of a Geocomposite-PVD system in preventing subgrade instability and fluidisation under cyclic loading”, Geotextiles and Geomembranes, vol. 50, no. 4, pp. 607–17.
Arivalagan, J., Rujikiatkamjorn, C., Indraratna, B., and Warwick, A. 2021. “The role of geosynthetics in reducing the fluidisation potential of soft subgrade under cyclic loading”, Geotextiles and Geomembranes, vol. 49, no. 5, pp. 1324–38.
Ayres, D. 1986. “Geotextiles or geomembranes in track? British railways' experience”, Geotextiles and Geomembranes, vol. 3, no. 2-3, pp. 129–42.
Faure, Y.-H., Baudoin, A., Pierson, P., and Ple, O. 2006. “A contribution for predicting geotextile clogging during filtration of suspended solids”, Geotextiles and Geomembranes, vol. 24, no. 1, pp. 11–20.
Hansbo, S. 1979. “Consolidation of clay by bandshaped prefabricated drains”, Ground Engineering, London, vol. 12, no. 5, pp. 16–27.
Hansbo, S. 1997. “Aspects of vertical drain design: Darcian or non-Darcian flow”, Geotechnique, vol. 47, no. 5, pp. 983–92.
Holtz, R. D., Jamiolkowski, M., Lancellotta, R., and Pedroni, R. 1991. Prefabricated Vertical Drains: Design and Performance, Construction Industry Research & Information Assoc, London : CIRIA ; Oxford : Butterworth-Heinemann.
Indraratna, B., Attya, A., and Rujikiatkamjorn, C. 2009. “Experimental investigation on effectiveness of a vertical drain under cyclic loads”, Journal of geotechnical and geoenvironmental engineering, vol. 135, no. 6, pp. 835–9.
Indraratna, B., Korkitsuntornsan, W., and Nguyen, T. T. 2020a, “Influence of Kaolin content on the cyclic loading response of railway subgrade”, Transportation Geotechnics, vol. 22, p. 100319.
Indraratna, B., Rujikiatkamjorn, C., Ewers, B., and Adams, M. 2010. “Class A prediction of the behavior of soft estuarine soil foundation stabilized by short vertical drains beneath a rail track”, Journal of geotechnical and geoenvironmental engineering, vol. 136, no. 5, pp. 686–96.
Indraratna, B., Rujikiatkamjorn, C., and Ni, J. 2011. “Cyclic behaviour of soft soil subgrade improved by prefabricated vertical drains”, International Symposium on Deformation Characteristics of Geomaterials, September 1~3, 2011, Seoul, Korea 5, pp. 559–64.
Indraratna, B., Singh, M., Nguyen, T. T., Leroueil, S., Abeywickrama, A., Kelly, R., and Neville, T. 2020b. “Laboratory study on subgrade fluidization under undrained cyclic triaxial loading”, Canadian Geotechnical Journal, vol. 57, no. 11, pp. 1767–79.
Israr, J., Indraratna, B., and Rujikiatkamjorn, C. 2016. “Laboratory investigation of the seepage induced response of granular soils under static and cyclic loading”, Geotechnical Testing Journal, vol. 39, no. 5, pp. 795–812.
Jiang, M., Konrad, J., and Leroueil, S. 2003. “An efficient technique for generating homogeneous specimens for DEM studies”, Computers and geotechnics, vol. 30, no. 7, pp. 579–97.
Kermani, B., Stoffels, S. M., and Xiao, M. 2019. Assessment of geotextile effectiveness in decreasing subgrade pumping and increasing service life in rigid pavements using scaled model mobile load simulator, American Society of Civil Engineers Reston, VA, pp. 357–67.
Korkitsuntornsan, W. 2020. Mechanisms of Mud pumping and the Effects of the Fines content, PhD Thesis, University of Wollongong, Australia, p. 190.
Mamou, A., Powrie, W., Priest, J., and Clayton, C. 2017. “The effects of drainage on the behaviour of railway track foundation materials during cyclic loading”, Géotechnique, vol. 67, no. 10, pp. 845–54.
Mohammadinia, A., Arulrajah, A., Disfani, M. M., and Darmawan, S. 2019. “Small-Strain Behavior of Cement-Stabilized Recycled Concrete Aggregate in Pavement Base Layers”, Journal of Materials in Civil Engineering, vol. 31, no. 5.
Nguyen, T. T., Indraratna, B., Kelly, R., Phan, N. M., and Haryono, F. 2019. “Mud pumping under railtracks: mechanisms, assessments and solutions”, Aust Geomech J, vol. 54, no. 4, pp. 59–80.
Selig, E. T., and Waters, J. M. 1994. Track Geotechnology and Substructure Management, Thomas Telford, London, U.K.
Sharpe, P. 1988. “Track foundation reinforcement–The performance of six experimental track foundations”,.
Sharpe, P., Roskams, T., and Valero, S. N. 2014. The development of a geocomposite to prevent mud pumping, pp. 346–53.
Singh, M., Indraratna, B., Rujikiatkamjorn, C., and Kelly, R. 2020. “Cyclic response of railway subgrade prone to mud pumping”, Australian Geomechanics Journal, vol. 55, no. 1, pp. 43–54.
Trani, L. D. O., and Indraratna, B. 2010. “Use of impedance probe for estimation of porosity changes in saturated granular filters under cyclic loading: calibration and application”, Journal of geotechnical and geoenvironmental engineering, vol. 136, no. 10, pp. 1469–74.
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