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Post-Cyclic Undrained Behavior of Compacted Composite Clay Subjected to Various Cyclic Loading Paths

  • H. R. Tavakoli
  • A. Shafiee
  • M. K. Jafari
Original paper

Abstract

Using a sequential procedure of undrained cyclic and post cyclic tests, the strength and stiffness degradation characteristics of compacted composite clays are studied immediately after various cyclic loading paths by triaxial and hollow cylinder tests. The effects of cyclic loading paths, sand contents, cyclic loading amplitude and confining pressure on the post-cyclic mechanical behavior of the composite clays are evaluated. The results point out different peculiarities which can be of interest in assessing the mechanical behavior of the composite clays under post seismic shaking. The results show that effect of cyclic loading on post cyclic pore water pressure build-up is significant when pore water pressure build-up is considerably lower than the associated value in monotonic loading. The effect of sand content and cyclic loading path on degradation of stiffness is more remarkable than shear strength. Test results also reveal that the effect of sand content on the post cyclic pore water pressure build-up is minor. However, when the aggregate content increases the shear strength increases.

Keywords

Post-cyclic Strength and stiffness degradation Pore pressure Cyclic loading path 

References

  1. Abeele WV (1986) The influence of bentonite on the permeability of sandy silts. Nuclear Chem Waste Manag 6:81–88CrossRefGoogle Scholar
  2. Asao I (1964) The Miboro dam. In: Proceedings of the 8th international congress on large dams, Edinburgh, vol III, pp 803–824Google Scholar
  3. ASTM D 698-00a (2002) Standard test methods for laboratory compaction characteristics of soil using standard effort. In Annual Book of ASTM Standards, vol. 04.08, sec. 4, ASTM International, West Conshohocken, PA, pp 78–88Google Scholar
  4. Chapuis RP (1990) Sand-bentonite liners: predicting permeability from laboratory tests. Can Geotech J 27(1):47–57CrossRefGoogle Scholar
  5. Chern JC, Lin CC (1994) “Post –cyclic consolidation behavior of loose sands.” Shuying Wang Page 17 Proceeding of Settlement 94, Geotechnical Special Publication, ASCE, No. 40Google Scholar
  6. Hall EB (1951) A triaxial apparatus for testing large soil specimens. Special Tech. Publ. No. 106 on Triaxial Testing of Soil Bituminous Mixtures, ASTM, pp 152–161Google Scholar
  7. Holtz WG, Ellis W (1961) Triaxial shear characteristics of clayey gravel soils. In: Proceedings of the 5th international conference. on soil mechanics and foundation engineering, Paris, vol 1, p 143Google Scholar
  8. Holtz WG, Willard M (1956) Triaxial shear characteristics of clayey gravel soils. J Soil Mech Foundation Eng 82:143–149Google Scholar
  9. Jafari MK, Shafiee A (2004) Mechanical behavior of compacted composite clays. Can Geotech J 41(6):1152–1167CrossRefGoogle Scholar
  10. Ladd RS (1978) Preparing test specimens using undercompaction. Geotech Testing J 1:16–23 GTJODJGoogle Scholar
  11. Lundgren TA (1981) Some bentonite sealants in soil mixed blankets. In Proceedings of 10th international conference on soil mechanics and foundation engineering, Stockholm, vol 2, pp 349–354Google Scholar
  12. Matsui T, Abe N (1981) Behavior of clay on cyclic stress-strain history. In: Proceedings of 10th international conference SMFE, Stockholm, V(3), 261–264Google Scholar
  13. Miller EA, Sowers GF (1957) Strength characteristics of soil-aggregate mixtures. Highway Res Board Bull 183:16–23Google Scholar
  14. Muir Wood D, Kumar G (2000) Experimental observations of behaviour of heterogeneous soils. Mech Cohesive-Frictional Mater 5:373–398CrossRefGoogle Scholar
  15. Pandian NS, Nagaraj TS, Raju PSRN (1995) Permeability and compressibility behavior of bentonite-sand/soil mixes. Geotech Testing J 18(1):86–93CrossRefGoogle Scholar
  16. Patwardhan AS, Rao JS, Gaidhane RB (1970) Interlocking effects and shearing resistance of boulders and large size particles in a matrix of fines on the basis of large scale direct shear tests. In: Proceedings of the 2nd Southeast Asian Conference on Soil Mechanics. Singapore, pp 265–273Google Scholar
  17. Shafiee A, Tavakoli HR, Jafari MK (2008) Undrained behavior of compacted sand-clay mixtures under monotonic loading paths. Appl Sci 8(18):3108–3118CrossRefGoogle Scholar
  18. Soroush A, Soltani-Jigheh H (2009) Pre- and post-cyclic behavior of mixed clayey soils. Can Geotech J 46:115–128CrossRefGoogle Scholar
  19. Vaid YP, Thomas J (1995) Liquefaction and postliquefaction behavior of sand. J Geotech Eng 121(2):163–173CrossRefGoogle Scholar
  20. Vallejo LE, Zhou Y (1994) The mechanical properties of simulated soil-roak mixtures. In: Proceedings of the 13th international Conference on soil mech and found Eng. New Delhi, India, vol 1, January 10, pp 356–368Google Scholar
  21. Yasuhara K (1985) Undrained and drained cyclic triaxial tests on a marine clay. In: Proceedings 11th ICSMFE, San Francisco, V(2), 1095–1098Google Scholar
  22. Yasuhara K, Yamanouchi T, Hirao K (1982) Cyclic strength and deformation of normally consolidated clay. Soils Foundations 22(3):77–91CrossRefGoogle Scholar
  23. Yasuhara K, Murakami S, Song BW, Yokokawa S, Hyde AFL (2003) Postcyclic degradation of strength and stiffness for low plasticity silt. J Geotech Geoenviron Eng 129(8):756–769CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Civil Engineering DepartmentBabol University of TechnologyBabolIran
  2. 2.Geotechnical Engineering Research CenterInternational Institute of Earthquake Engineering and SeismologyTehranIran
  3. 3.Geotechnical Engineering Research CenterInternational Institute of Earthquake Engineering and SeismologyTehranIran

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