Geomechanics and Engineering

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Mechanical properties of expanded polystyrene beads stabilized lightweight soil

  • Li, Mingdong (HoHai University) ;
  • Wen, Kejun (Department of Civil and Environmental Engineering, Jackson State University) ;
  • Li, Lin (Department of Civil and Environmental Engineering, Jackson State University) ;
  • Tian, Anguo (School of Civil Engineering, Huaihai Institute of Technology)
  • Received : 2016.05.17
  • Accepted : 2017.03.28
  • Published : 2017.09.25
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Abstract

To investigate the mechanical properties of Expanded Polystyrene (EPS) Beads Stabilized Lightweight Soil (EBSLS), Laboratory studies were conducted. Totally 20 sets of specimens according to the complete test design were prepared and tested with unconfined compressive test and consolidated drained triaxial test. Results showed that dry density of EBSLS ($0.67-1.62g/cm^3$) decreases dramatically with the increase of EPS beads volumetric content, while increase slightly with the increase of cement content. Unconfined compressive strength (10-2580 kPa) increases dramatically in parabolic relationship with the increase of cement content, while decreases with the increase of EPS beads volumetric content in hyperbolic relationship. Cohesion (31.1-257.5 kPa) increases with the increase of cement content because it is mainly caused by the bonding function of hydration products of cement. The more EPS beads volumetric content is, the less dramatically the increase is, which is a result of the cohesion between hydration products of cement and EPS beads is less than that between hydration products of cement and sand particles. Friction angle ($14.92-47.42^{\circ}$) decreases with the increase of EPS beads volumetric content, which is caused by the smoother surfaces of EPS beads than sand grains. The stress strain curves of EBSLS tend to be more softening with the increase of EPS beads content or the decrease of cement content. The shear contraction of EBSLS increases with the increase of $c_e$ or the decrease of $c_c$. The results provided quantitative relationships between physico-mechanical properties of EBSLS and material proportion, and design process for engineering application of EBSLS.

Keywords

Acknowledgement

Supported by : National Foundation of China

References

  1. Bera, A.K. and Chakraborty, S. (2015), "Compaction and unconfined compressive strength of sand modified by class F fly ash", Geomech. Eng., Int. J., 9(2), 261-273. https://doi.org/10.12989/gae.2015.9.2.261
  2. Deng, A. and Xiao, Y. (2010), "Measuring and modeling proportion-dependent stress-strain behavior of EPS-sand mixture", Int. J. Geomech., 10(6), 214-222. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000062
  3. Gu, J. (2013), "Mixed EPS Particles and Light Soil in Highway Application", Highway, 2013(10), 9-12.
  4. He, X. (2007), "Construction practice of filling Olympic Corridor with bubble mixed light soil for reduction of load", J. Railway Eng. Soc., 7, 29-32.
  5. Hema, K.I. (2007), "Development of soil-EPS mixer for geotechnical applications", Ph.D.; Queensland University of Technology, Brisbane, Australia.
  6. Hou, T. (2015), "Prescription equation of foamed particles in lightweight soil", Geotech. Geol. Eng., 33(1), 153-160. https://doi.org/10.1007/s10706-014-9814-z
  7. Ji, F. (2005), "Study on mechanical properties of lightweight bead-treated soil made from silt", Hohai University, Nanjing, China.
  8. Karabash, Z. and Cabalar, A. (2015), "Effect of tire crumb and cement addition on triaxial shear behavior of sandy soils", Geomech. Eng., Int. J., 8(1), 1-15. https://doi.org/10.12989/gae.2015.8.1.001
  9. Kim, Y., Kim, H. and Lee, G. (2008), "Mechanical behavior of lightweight soil reinforced with waste fishing net", Geotext. Geomembr., 26(6), 512-518. https://doi.org/10.1016/j.geotexmem.2008.05.004
  10. Kim, T., Kim, T. and Kang, G. (2013), "Performance evaluation of road embankment constructed using lightweight soils on an unimproved soft soil layer", Eng. Geol., 160(27), 34-43. https://doi.org/10.1016/j.enggeo.2013.03.024
  11. Kim, T., Kang, G. and Park, L. (2014), "Development and mechanical strength properties of a new lightweight soil", Environ. Earth Sci., 72(4), 1109-1116. https://doi.org/10.1007/s12665-013-3027-2
  12. Lambe, T.W. and Whitman, R.V. (1979), Soil Mechanics, Wiley Eastern Limited, New Delhi, India.
  13. Li, M. (2008), "Study of compaction properties of Lightweight Sand-EPS Beads Soil (LSES)", Ph.D.; Hohai University, Nanjing, China.
  14. Li, M., Zhu W., Ma D. and Ji, F. (2006), "Construction technology and application in-situ of expanded polystyrene treated lightweight soil", Chinese J. Geotech. Eng., 28(4), 533-536.
  15. Li, M.D., Zhu, W., Zhang, C.L. and Zhao, G. (2008), "Effect of compaction parameters on lightweight sand-EPS beads soil", J. Hohai Univ. (Natural Sciences), 36(6), 814-817.
  16. Liu, H. (2013), "Technological innovation methods and practices in geotechnical engineering", Chinese J. Geotech. Eng., 35(1), 34-58.
  17. Miao, L., Wang, F., Han, J., Lv, W. and Li, J. (2013), "Properties and applications of cement-treated sandexpanded polystyrene bead lightweight fill", J. Mater. Civil Eng., 25(1), 86-93. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000556
  18. Moghaddas Tafreshi, S.N. and Norouzi, A.H. (2015), "Application of waste rubber to reduce the settlement of road embankment", Geomech. Eng., Int. J., 9(2), 219-241. https://doi.org/10.12989/gae.2015.9.2.219
  19. Nicholas, T.R. and Ronaldo, L. (2013), "Mixtures of clay/EPS particulates and undrained shear strength", Proceedings of Geo-Congress 2013: Stability and Performance of Slopes and Embankments III, San Diego, CA, USA, March, pp. 2066-2075.
  20. Terzi, N.U., Erenson, C. and Selcuk, M.E. (2015), "Geotechnical properties of tire-sand mixtures as backfill material for buried pipe installations", Geomech. Eng., Int. J., 9(4), 447-464. https://doi.org/10.12989/gae.2015.9.4.447
  21. Padade, A.H. and Mandal, J.N. (2014), "Expanded polystyrene-based geomaterial with fly ash", Int. J. Geomech., 14(6), 06014013. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000390
  22. Park, H. and Kim, Y. (2011), "Prediction of strength of reinforced lightweight soil using an artificial neural network", Eng. Computat., 28(5), 600-615. https://doi.org/10.1108/02644401111141037
  23. Wang, S., Qi, J., Yu, F. and Liu, F. (2016), "A novel modeling of settlement of foundations in permafrost regions", Geomech. Eng., Int. J., 10(2), 225-245. https://doi.org/10.12989/gae.2016.10.2.225
  24. Zhu, W., Li, M., Zhang, C. and Li, H. (2009), "The optimum moisture content of sand EPS beads mixed lightweight soil", Chinese J. Geotech. Eng., 31(1), 21-25.

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