Geomechanics and Engineering

  • 제25권5호
  • /
  • Pages.417-428
  • /
  • 2021
  • /
  • 2005-307X(pISSN)
  • /
  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Effect of microstructure on water retention behavior of lateritic clay over a wide suction range

  • Jin, Pan (College of Civil Engineering and Architecture, Quzhou University) ;
  • Zhen, Wenzhan (China Railway Eryuan Engineering Group Co. LTD) ;
  • Chen, Bo (College of Civil Engineering and Architecture, Quzhou University) ;
  • Sun, De'an (Department of Civil Engineering, Shanghai University) ;
  • Gao, You (School of Civil and Environmental Engineering, Ningbo University) ;
  • Xiong, Yonglin (School of Civil and Environmental Engineering, Ningbo University)
  • 투고 : 2020.09.15
  • 심사 : 2021.06.03
  • 발행 : 2021.06.10
⟨ 이전 논문 다음 논문 ⟩

초록

To investigate the effects of soil structrue and dry density on water retention behavior of lateritic clay over a wide suction range, the axial translation technique (ATT), filter paper technique (FPT) and vapour equilibrium technique (VET) were combined to obtain soil-water retention curves (SWRCs) of specimens with different structures and dry densities. Measured SWRCs indicate that the air-entry value (AEV) and descent gradient in terms of saturation degree versus suction relationship are smallest for undisturbed specimens, and are largest for pre-consolidated specimens. The SWRCs obtained from compacted specimens with different dry densities illustrate that the AEV and descent gradient of saturation degree versus suction relationship increase with increasing the dry density. However, the effects of soil structure and dry density on the water retention behavior can be negligible at high suctions, which are verified by the curves of gravimetric water content (w) verusus suction (s) coincided after a limiting suction for specimens with different structures and dry densities. In addition, the water retention behavior can be well illustrated by pore size distributions (PSDs), obtained from mercury intrusion porosimetry (MIP). The AEVs depend on the diameters that corresponding to dramatically increase in differential intruded void ratio. And the descent gradients in the saturation degree versus suction relationship depend on their distinct PSD ranges and incremental peaks in the dominant pore sizes. Furthermore, the consistences of the AEVs and limiting suctions, deduced from the PSDs and SWRCs, demonstrate that the water retention behavior is highly dependent on the PSDs, and the SWRC features can be captured well by the PSDs.

키워드

과제정보

This study is supported financially by Public Welfare Technology Research Projects of Zhejiang Province (No. LGG19E080002), the National Natural Science Foundation of China (No. 41902279) and Natural Science Foundation of Zhejiang Province (LY19E080012).

참고문헌

  1. Alonso, E.E., Pinyol, N.M. and Gens, A. (2013), "Compacted soil behavior: initial state, structure and constitutive modelling". Geotechnique, 63(6), 463-478. https://doi.org/10.1680/geot.11.P.134.
  2. Aqtash, U.A. and Bandini, P. (2015), "Prediction of unsaturated shear strength of an adobe soil from the soil-water characteristic curve", Constr. Build. Mater., 98, 892-899. https://doi.org/10.1016/j.conbuildmat.2015.07.188.
  3. ASTM Standard D 5298-03, (2007), Standard test method for measurement of soil potential (suction) using filter paper. ASTM International, West Conshohocken, Pennsylvania, U.S.A
  4. Azizi, A., Jommi, C. and Musso, G. (2017), "A water retention model accounting for the hysteresis induced by hydraulic and mechanical wetting-drying cycles", Comput. Geotech., 87, 86-98. https://doi.org/10.1016/j.compgeo.2017.02.003.
  5. Blatz, J.A., Cui, Y.J. and Oldecop, L. (2008), "Vapour equilibrium and osmotic technique for suction control", Geotech. Geol. Eng., 26(6), 661-673. https://doi.org/10.1007/s10706-008-9196-1.
  6. Burland, J.B. (1990), "On the compressibility and shear strength of natural clay". Geotechnique, 40(3), 329-378. https://doi.org/10.1680/geot.1990.40.3.329.
  7. Burton, G.J., Sheng, D.C. and Campbell, C. (2014), "Bimodal pore size distribution of a high-plasticity compacted clay", Geotech. Lett., 4, 88-93. https://doi.org/10.1680/geolett.14.00003.
  8. Chen, Y.H., Li, B.Y., Xu, Y.T., Zhao, Y.P. and Xu, J. (2019), "Field study on the soil water characteristics of shallow layers on red clay slopes and its application in stability analysis", Arab. J. Sci. Eng., 44, 5107-5116. https://doi.org/10.1007/s13369-018-03716-3.
  9. Delage, P. and Lefebvre, G. (1984), "Study of the structure of a sensitive Champlain clay and of its evolution during consolidation", Can. Geotech. J., 21(1), 21-35. https://doi.org/10.1139/t84-003.
  10. Delage, P., Audiguier, M., Cui, Y.J. and Howat, M.D. (1996), "Microstructure of a compacted silt", Can. Geotech. J., 33(1), 150-158. https://doi.org/10.1139/t96-030.
  11. Dieudonne, A.C., Vecchia, G.D. and Charlier, R. (2017), "Water retention model for compacted bentonites", Can. Geotech. J., 54(7), 915-925. https://doi.org/10.1139/cgj-2016-0297.
  12. Diamond, S. (1970), "Pore size distribution in clays", Clay Clay Miner., 18(1), 7-23. https://doi.org /10.1346/CCMN.1970.0180103.
  13. Fredlund, D.G. and Rahardjo, H. (1993), Soil Mechanics for Unsaturated Soils, John Wiley and Sons Inc., New York, U.S.A.
  14. Gao, Y., Li, Z., Sun, D.A. and Yu, H.H. (2021), "A simple method for predicting the hydraulic properties of unsaturated soils with different void ratios", Soil Till. Res., 209, 104913. https://doi.org/10.1016/j.still.2020.104913.
  15. Gidigaso, M.D. (1972), "Mode of formation and geotechnical characteristics of laterite materials of Ghanan in relation to soil forming factors", Eng. Geol., 6(2), 79-150. https://doi.org/10.1016/0013-7952(72)90034-8.
  16. Griffiths, F.J. and Joshi, R.C. (1989), "Change in pore size distribution due to consolidation of clays", Geotechnique, 39(1), 159-167. https://doi.org/10.1680/geot.1989.39.1.159.
  17. Greespan, L. (1977), "Humidity fixed points of binary saturated aqueous solutions", J. Res. National Bureau Standards, 81(1), 89-96. https://doi.org/10.6028/jres.081A.011.
  18. Hou, X.K., Qi, S.W., Li, T.L., Guo, S.F., Wang, Y., Li, Y. and Zhang, L.X. (2020), "Microstructure and soil-water retention behavior of compacted and intact silt loess", Eng. Geol., 277, 105814. https://doi.org/10.1016/j.enggeo.2020.105814.
  19. Hoyos, L.R., Laloui, L. and Vassalo, R. (2008), "Mechanical testing in unsaturated soils", Geotech. Geol. Eng., 26, 675-689. https://doi.org/10.1007/s10706-008-9200-9.
  20. Jeong, S.S. and Kim, Y.M. (2017), "Modeling of shallow landslides in an unsaturated soil slope using a coupled model", Geomech. Eng., 13(2), 353-370. http://doi.org/10.12989/gae.2017.13.2.353.
  21. Kew, G. and Gilkes, R. (2006), "Classification, strength and water retention characteristics of lateritic regolith", Geoderma, 136, 184-198. https://doi.org/10.1016/j.geoderma.2006.03.025.
  22. Leong, E.C., He, L. and Rahardjo, H. (2002), "Factors affecting the filter paper method for total and matric suction measurements", Geotech. Test. J., 25(3), 1-12. https://doi.org/10.1520/GTJ11094J.
  23. Li, J. and Cameron, D.A. (2002), "A case study of a courtyard house damaged by expansive soils", J. Perform. Constr. Fac., 16(4), 169-175. https://doi.org/10.1061/(ASCE)0887-3828(2002)16:4(169).
  24. Lipiec, J., Walczak, R., Witkowska-Walczak, B., Nosalewicz, A., Slowinska-Jurkiewicz, A. and Slawinski, C. (2007), "The effect of aggregate size on water retention and pore structure of two silt loam soils of different genesis", Soil Till Res., 97(2), 239-246. https://doi.org/10.1016/j.still.2007.10.001.
  25. Lubelli, B., Winter, D.A.M., Post, J.A., Van-Hees, R.P.J. and Drury, M.R. (2013), "Cryo-FIB-SEM and MIP study of porosity and pore size distribution of bentonite and kaolin at different moisture contents", Appl. Clay Sci., 80-81, 358-365. https://doi.org/10.1016/j.clay.2013.06.032.
  26. Meshida, E.A. (2006), "Highway failure over talc-tremolite schist terrain: A case study of the Ife to Ilesha highway, South Western Nigeria", B. Eng. Geol. Environ., 65(4), 457-461. https://doi.org/10.1007/s10064-005-0037-7.
  27. Miguel, M.G. and Bonder, B.H. (2012), "Soil-water characteristic curves obtained for a colluvial and lateritic soil profile considering the macro and micro porosity", Geotech. Geol. Eng., 30, 1045-1420. https://doi.org/10.1007/s10706-012-9545-y.
  28. Niu, G., Shao, L.T., Sun, D.A. and Guo, X.X. (2020), "A simplified directly determination of soil-water retention curve from pore size distribution", Geomech. Eng., 20(5), 411-420. https://doi.org/10.12989/gae.2020.20.5.411
  29. Ng, C.W.W., Sadeghi, H., Hossen, B., Chiu, C.F., Alonso, E.E. and Baghbanrezvan, S. (2016), "Water retention and volumetric characteristics of intact and re-compacted loess", Can. Geotech. J., 53(8), 1258-1269. https://doi.org/10.1139/cgj-2015-0364.
  30. Otalvaro, I.F., Neto, M.P.C. and Caicedo, B. (2015), "Compressibility and micro- structure of compacted laterites". Transp. Geotech., 5:20-34. http://doi.org/10.1016/j.trgeo.2015.09.005
  31. Peron, H., Hueckel, T. and Laloui, L. (2007), "An improved volume measurement for determining soil water retention curves", Geotech. Test J., 30(1), 1-8. https://doi.org/10.1520/GTJ100167.
  32. Rahimi, A., Rahardjo, H. and Leong, E.C. (2015), "Effects of soil water characteristic curve and relative permeability equations on estimation of unsaturated permeability function", Soils Found., 55(6), 1400-1411. https://doi.org/10.1016/j.sandf.2015.10.006.
  33. Rasool, A.M. and Kuwano, J. (2020), "Effect of constant loading on unsaturated soil under water infiltration conditions", Geomech. Eng., 20(3), 221-232. https://doi.org/ 10.12989/gae.2020.20.3.221.
  34. Romero, E., Gens, A. and Lloret, A. (1999), "Water permeability, water retention and microstructure of unsaturated compacted Boom clay", Eng. Geol., 54(1-2), 117-127. https://doi.org/10.1016/S0013-7952(99)00067-8.
  35. Sun, D.A., Gao, Y., Zhou, A.N. and Sheng, D.C. (2016), "Soil-water retention curves and microstructures of undisturbed and compacted Guilin lateritic clay", B. Eng. Geol. Environ., 75(2), 781-791. https://doi.org/ 10.1007/s10064-015-0765-2.
  36. Tan, Y.Z., Yu, B., Liu, X.L., Wan, Z. and Wang, H.X. (2015), "Pore size evolution of compacted laterite under desiccation shrinkage process effects", Rock Soil Mech., 36(2), 369-375 (in Chinese). https://doi.org/10.16285/j.rsm.2015.02.010.
  37. Vanapalli, S.K., Wright, A. and Fredlund, D.G. (2000), "Shear strength behavior of a silty soil over the suction range from 0 to 1,000,000 kPa", Proceedings of the 53rd Canadian Geotechnical Conference, Montreal, Canada, October.
  38. Wang, J. (2020), "Study on the hydro-mechanical behaviors and microstructure of lateritic clay over a wide suction range", M. Sc. Thesis, Shanghai University, Shanghai, China.
  39. Zhang, F., Cui Y.J. and Ye, W.M. (2018a), "Distinguishing macro- and micro-pores for materials with different pore populations", Geotech. Lett., 8, 1-9. https://doi.org/10.1680/jgele.17.00144.
  40. Zhang, F., Cui Y.J., Zeng, L.L., Robinet, J.C., Conil, J. and Talandier J. (2018b), "Effect of degree of saturation on the unconfined compressive strength of natural stiff clays with consideration of air entry value", Eng. Geol., 237, 140-148. https://doi.org/10.1016/j.enggeo.2018.02.013.
  41. Zhou, X.Y., Sun, D.A. and Xu, Y.F. (2021), "A new thermal analysis model with three heat conduction layers in the nuclear waste repository", Nucl. Eng. Des., 317, 110929. https://doi.org/10.1016/j.nucengdes.2020.110929.