Study on Consolidation Behaviors of Peaty Soils Using a Viscoelastic Rheological-Consolidation Model in Kunming, China

Abstract

Due to the presence of organic matters, peaty soils have a highly compressible nature, and the consolidation process is complicated by the occurrence of rheological deformation. This paper presents the behaviors of the peaty soils sampled from the city of Kunming, the capital of Yunnan province in southwestern China. A series of one-dimensional compression tests are carried out on the peaty soil specimens with different organic matter contents. Considering the rheological properties of peaty soils, the three-element viscoelastic rheological model is introduced into the consolidation equation, then the analytical solution is derived for the viscoelastic rheological-consolidation model. Finally, the influences of consolidation pressures and organic matter contents on the model parameters determined by test data fitting are investigated. It has been shown that the model is coinciding fairly well with test results, and the consolidation pressure and organic matter content have a remarkable effect on the model parameters.

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Abbreviations

a 12 :

Coefficient of compressibility from 100 kPa to 200 kPa

C c :

Compression index

e :

Void ratio

E 0, E 1, η 0, k v :

Parameters of the viscoelastic rheological-consolidation model

G s :

Mean specific gravity

G sm :

Inorganic specific gravity

G so :

Organic specific gravity

p :

Consolidation pressure

S :

Axial deformation of the sample

t :

Elapsed time

W L :

Liquid limit

W P :

Plastic limit

W 0 :

Natural water content

References

  1. ASTM D854 (2014) Standard test methods for specific gravity of soil solids by water pycnometer. ASTM D854, American Society for Testing and Materials, West Conshohocken, PA, USA, DOI: https://doi.org/10.1520/D0854-14

    Google Scholar 

  2. ASTM D1997 (2013) Standard test method for laboratory determination of the fiber content of peat samples by dry mass. ASTM D1997, American Society for Testing and Materials, West Conshohocken, PA, USA, DOI: https://doi.org/10.1520/D1997-13

    Google Scholar 

  3. ASTM D2974 (2014) Standard test methods for moisture, ash, and organic matter of peat and other organic soils. ASTM D2974, American Society for Testing and Materials, West Conshohocken, PA, USA, DOI: https://doi.org/10.1520/D2974-14

    Google Scholar 

  4. ASTM D4318 (2010) Standard test methods for liquid limit, plastic limit, and plasticity index of soils. ASTM D4318, American Society for Testing and Materials, West Conshohocken, PA, USA, DOI: https://doi.org/10.1520/D4318-17E01

    Google Scholar 

  5. ASTM D4531 (2015) Standard test methods for bulk and dry density of peat and peat products. ASTM D4531, American Society for Testing and Materials, West Conshohocken, PA, USA, DOI: https://doi.org/10.1520/D4531-15

    Google Scholar 

  6. Barden L (1968) Primary and secondary consolidation of clay and peat. Geotechnique 18(1):1–24, DOI: https://doi.org/10.1680/geot.1968.18.3.387

    Article  Google Scholar 

  7. Berry PL, Poskitt TJ (1972) The consolidation of peat. Geotechnique 22(1):27–52, DOI: https://doi.org/10.1680/geot.1972.22.1.27

    Article  Google Scholar 

  8. Berry PL, Vickers B (1975) Consolidation of fibrous peat. Journal of the Geotechnical Engineering Division 101(8):741–753, DOI: https://doi.org/10.1016/0148-9062(75)90241-7

    Google Scholar 

  9. BS1377 (1990) Methods of test for soils for civil engineering purposes (classification tests). BS1377: Part 2, British Standards Institution, Milton Keynes, UK

  10. Butterfield R (1979) A natural compression law for soils. Géotechnique 29(4):469–480, DOI: https://doi.org/10.1680/geot.1979.29.4.469

    Article  Google Scholar 

  11. Choo H, Bate B, Burns SE (2015) Effects of organic matter on stiffness of overconsolidated state and anisotropy of engineered organoclays at small strain. Engineering Geology 184:19–28, DOI: https://doi.org/10.1016/j.enggeo.2014.10.022

    Article  Google Scholar 

  12. Cola S, Cortellazzo G (2005) The shear strength behaviour of two peaty soils. Geotechnical & Geological Engineering 23(6):679–695, DOI: https://doi.org/10.1007/s10706-004-9223-9

    Article  Google Scholar 

  13. Dhowian AW, Edil TB (1980) Consolidation behaviour of peats. Geotechnical Testing Journal 3(3):105–114, DOI: https://doi.org/10.1520/GTJ10881J

    Article  Google Scholar 

  14. Elsayed A, Paikowsky S, Kurup P (2011) Characteristics and engineering properties of peaty soil underlying cranberry bogs. Geo-frontiers congress 2011, March 13–16, Dallas, TX, USA, 2812–2821, DOI: https://doi.org/10.1061/41165(397)288

  15. Fox PJ, Edil TB, Lan LT (1992) Cα/Cc Concept applied to compression of peat. Journal of Geotechnical Engineering 118(8):1256–1263, DOI: https://doi.org/10.1061/(ASCE)0733-9410(1992)118:8(1256)

    Article  Google Scholar 

  16. GB/T50123-1999 (1999) National standard of the People’s Republic of China: Standard for soil test method. GB/T50123-1999, China Planning Press, Beijing, China

  17. Gibson RE (1961) A theory of consolidation for soils exhibiting secondary compression. Report No. 41, Norwegian Geotechnical Institute Publication, Oslo, Norway

    Google Scholar 

  18. Gunaratne M, Stinnette P, Mullins AG, Kuo CL, Echelberger WF (1998) Compressibility relations for peat and organic soil. Journal of Testing and Evaluation 26(1):1–9, DOI: https://doi.org/10.1520/JTE11963J

    Article  Google Scholar 

  19. Hendry MT, Barbour SL, Martin CD (2014) Evaluating the effect of fiber reinforcement on the anisotropic undrained stiffness and strength of peat. Journal of Geotechnical and Geoenvironmental Engineering 140(9):04014054, DOI: https://doi.org/10.1061/(asce)gt.1943-5606.0001154

    Article  Google Scholar 

  20. Hendry MT, Sharma JS, Martin CD, Barbour SL (2012) Effect of fibre content and structure on anisotropic elastic stiffness and shear strength of peat. Canadian Geotechnical Journal 49(4):403–415, DOI: https://doi.org/10.1139/t2012-003

    Article  Google Scholar 

  21. JTG E40-2007 (2007) National standard of the People’s Republic of China: Test methods of soils for highway engineering. JTG E40-2007, China Communications Press, Beijing, China

  22. Karunawardena WA, Oka F, Kimoto S, Kulatilaka SAS (2007) Prediction of consolidation behavior of Sri Lankan peaty clay using an elasto-viscoplastic theory. PhD Thesis, University of Tokyo, Tokyo, Japan

    Google Scholar 

  23. Kazemian S, Prasad A, Huat BB, Barghchi M (2011) A state of art review of peat: Geotechnical engineering perspective. International Journal of Physical Sciences 6(8):1974–1981, DOI: https://doi.org/10.5897/IJPS11.396

    Google Scholar 

  24. Kværner J, Snilsberg P (2008) The romeriksporten railway tunnel-drainage effects on peatlands in the lake Northern Puttjern area. Engineering Geology 101(3–4):75–88, DOI: https://doi.org/10.1016/j.enggeo.2008.04.002

    Article  Google Scholar 

  25. Lee JS, Seo SY, Lee C (2015) Geotechnical and geophysical characteristics of muskeg samples from Alberta, Canada. Engineering Geology 195:135–141, DOI: https://doi.org/10.1016/j.enggeo.2015.04.030

    Article  Google Scholar 

  26. Liingaard M, Augustesen A, Lade PV (2004) Characterization of models for time-dependent behaviour of soils. International Journal of Geomechanics 4(3):157–177, DOI: https://doi.org/10.1061/(ASCE)1532-3641(2004)4:3(157)

    Article  Google Scholar 

  27. Long M, Boylan N (2013) Predictions of settlement in peat soils. Quarterly Journal of Engineering Geology & Hydrogeology 46(3): 303–322, DOI: https://doi.org/10.1144/qjegh2011-063

    Article  Google Scholar 

  28. Madaschi A, Gajo A (2015) One-dimensional response of peaty soils subjected to a wide range of oedometric conditions. Géotechnique 65(4):274–286, DOI: https://doi.org/10.1680/geot.14.p.144

    Article  Google Scholar 

  29. Mesri G, Ajlouni M (2007) Engineering properties of fibrous peats. Journal of Geotechnical and Geoenvironmental Engineering 133(7): 850–866, DOI: https://doi.org/10.1061/(asce)1090-0241(2007)133:7(850)

    Article  Google Scholar 

  30. Mesri G, Choi YK (1985) Settlement analysis of embankments on soft clays. Journal of Geotechnical Engineering 111(4):441–464, DOI: https://doi.org/10.1061/(ASCE)0733-9410(1985)111:4(441)

    Article  Google Scholar 

  31. Mesri G, Stark TD, Ajlouni MA, Chen CS (1997) Secondary compression of peat with or without surcharging. Journal of Geotechnical and Geoenvironmental Engineering 123(5):411–421, DOI: https://doi.org/10.1061/(asce)1090-0241(1997)123:5(411)

    Article  Google Scholar 

  32. Oikawa H (1987) Compression curve of soft soils. Soils and Foundations 27(3):99–104, DOI: https://doi.org/10.3208/sandf1972.27.3_99

    Article  Google Scholar 

  33. O’Kelly BC, Sivakumar V (2014) Water content determinations for peat and other organic soils using the oven-drying method. Drying Technology 32:631coi200122000002643, DOI: https://doi.org/10.1080/07373937.2013.849728

    Google Scholar 

  34. Onitsuka K, Hong Z, Hara Y, Yoshitake S (1995) Interpretation of oedometer test data for natural clays. Soils and Foundations 35(3): 61coi20012200000270, DOI: https://doi.org/10.3208/sandf.35.61

    Article  Google Scholar 

  35. Robinson RG (2003) A study on the beginning of secondary compression of soils. Journal of Testing and Evaluation 31(5):388–397, DOI: https://doi.org/10.1520/JTE12362J

    Google Scholar 

  36. Skempton AW, Petley DJ (1970) Ignition loss and other properties of peats and clays from Avonmouth, King’s Lynn and Cranberry Moss. Geotechnique 20(4):343–356, DOI: https://doi.org/10.1680/geot.1970.20.4.343

    Article  Google Scholar 

  37. Sobhan K, Ali H, Riedy K, Huynh H (2007) Field and laboratory compressibility characteristics of soft organic soils in Florida. Proceedings of Geo-Denver 2007, February 18–21, Denver, CO, USA, 1–10, DOI: https://doi.org/10.1061/40917(236)8

  38. Taylor DW, Merchant W (1940) A theory of clay consolidation accounting for secondary compression. Journal of Mathematics and Physics 19(1–4):167–185, DOI: https://doi.org/10.1002/sapm1940191167

    Article  Google Scholar 

  39. Xie KH, Xie XY, Li XB (2008) Analytical theory for one-dimensional consolidation of clayey soils exhibiting rheological characteristics under time-dependent loading. International Journal for Numerical and Analytical Methods in Geomechanics 32(14):1833–1855, DOI: https://doi.org/10.1002/nag.698

    Article  Google Scholar 

  40. Yue G, Jian FU, Cheng-Kun WU, Jing C, Yu-Feng G (2016) Hydraulic conductivity of lacustrine peaty soil in plateau areas and its mechanism analysis. Rock & Soil Mechanics 37(11):3197–3207, DOI: https://doi.org/10.16285/j.rsm.2016.11.020

    Google Scholar 

  41. Zhang L, O’Kelly BC, Nagel T (2017) Tensile and compressive contributions of fibres in peat. 6th Biot conference on poromechanics, July 9–13, Paris, France, 1466–1473, DOI: https://doi.org/10.1061/9780784480779.182

  42. Zwanenburg C, Den Haan EJ, Kruse GAM, Koelewijn AR (2012) Failure of a trial embankment on peat in Booneschans, the Netherlands. Géotechnique 62(6):479, DOI: https://doi.org/10.1680/geot.9.P.094

    Article  Google Scholar 

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Acknowledgements

This work is supported by the National Natural Science Foundation of China under Grant No. 41572258.

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Correspondence to Kan Liu.

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Zhang, FG., Liu, K. & Yang, M. Study on Consolidation Behaviors of Peaty Soils Using a Viscoelastic Rheological-Consolidation Model in Kunming, China. KSCE J Civ Eng 24, 752–761 (2020). https://doi.org/10.1007/s12205-020-0587-z

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Keywords

  • Peaty soils
  • Organic matter
  • One-dimensional compression
  • Rheological model
  • Parameters