Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
권호 표지

The Characteristics of Consolidation and Permeability in Normally Consolidated Region Using a Remolded Decomposed Mudstone Soil

재성형된 이암풍화토를 이용한 정규압밀영역의 압밀 및 투수특성

  • 김영수 (경북대학교 공과대학 토목공학과) ;
  • 김기영 (경북대학교 공과대학 토목공학과 박사과정 수료) ;
  • 이상웅 (경북대학교 공과대학 토목공학과 박사과정 수료)
  • Published : 2000.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

When clay foundations of embankments are treated with vertical drain, essentially, the strain occurs to vertical direction but the water flow is radial. The initial horizontal permeability and its variation with the vertical compression are key parameters for the choice of the type of drains, their spacing, and affect to the cost of the project. In this study, CRS consolidation test is performed to investigate the anisotropic characteristics of decomposed mudstone soil and direct permeability test is performed on the same specimens. The results of testing show that Ch is larger than Cv. specially, the Cv - $\sigma$v relationship for a soil sample is viewed from three different curve segments corresponding to overconsolidated, transition and normally consolidated states. The anisotropic ratio, rk(kh/kv) is 2.19. Coefficient of permeability in normally consolidated state is related to its void ratio and permeability parameter n. C can be determined from a linear plot of log[k(1+e)] versus log e. The slope, n, of graphs is the same, whereas the vertical intercept, log C, seems to vary somewhat for anisotropic.

Keywords

References

  1. 지반공학회지 일정변형률 압밀시험에 따른 이암풍화통의 압밀특성 김영수;김기영;김대만
  2. '97 대한토목학회 학술발표회 논문집 v.Ⅲ 재형성된 이암퐁화토의 이방성에 따른 $K_0$정규압밀특성 김영수;김기영;김종승
  3. 대한토목학회지 v.19 no.Ⅲ-4 CRS시험의 적정변형속도 산정에 관한연구 이송;이규환;최점식
  4. 지반공학회지 v.14 no.4 일정 변형률 및 표준압밀시험을 이용한 해성점토의 압밀특성 연구 이우진;임형덕;이원제
  5. Journal of the Geotechnical Engineering Division v.100 no.GT12 Permeability of Cohesionless Soils Amer, A.M.;Awad, A.A.
  6. Consolidation of Soils: Testing Evaluation Improved Technique for the Constant Rate of Strain Consolidation Test Armour, D.W;Drnevich, V.P.;Young, R. N.(ed.);TownSend. F. C.(ed.)
  7. ASTM Designation : D4 186-82 Standard Test Method for One-Dimensional consolidation Properties of Soils Using Controlled-Strain Loading
  8. M. Sc. thesis, Universite Laval De l'anisotropie de permeabilite des argiles varvees de la region de Matagami Bergeron, L.
  9. Can. Geotec. J. v.10 no.3 Laboratory Investigation of Permeability ratio of New Liskeard varved soil Chan, H.T.;Kenney, T.C.
  10. Ph. D. Thesis, University of Illinois at Urbanachamp-aign Compressibility and Permeability of Natural Soft Clays and Surc-harging to Reduce Settlements Feng, T. W.
  11. Soil Mechanic Lambe, T. W.;Whitman, R. V.
  12. Can, Gedtec. J. 27 v.27 Perm-eability anisotropy og natural clays as a function of strain Leroueil, S.;Bouclin, G.;Tavenas, F.;Bergeron, L.;La Rochelle, P.
  13. 13th ICSMFE Permeability Characteristics of Soft Clays Mersi, G.;Feng, T.W.;Ali, S.;Hayat, T.M.
  14. Proc 7th IOPEC v.1 Major Effect of Grain Size Distribution to Coefficient of Marine Clay Misuharu, F.;Seiji, S.;Takao, U.
  15. ASTM Measurement of the Hydraulic Conductivity of Fine-grained Soils Olson, R. E.;Daniel, D. e.
  16. Journal of Geotechnical Engineering Division v.108 no.GT6 Permeability and Consol-idation of Normally Consolidated Soils Samarasinghe, A. M.;Haung, Y. H.;Drnevich, V. P
  17. Proceedings, Fourth Australia-New Zealand Conference on Geomechnics v.1 An Empirical Relation for Co-efficient of Permeability of Sand Shahabi, A.M.;Das, B.M.;Tarquin, A.J.
  18. Proc. of the 3rd Int. Conf. Soil Mech. Foun. Eng. v.1 The Colloidal Activity of Clay Skempton, A. W.
  19. Journal of the Soil Mechanics and Foundations Divistion, ASCE v.95 no.SM2 Consolidation under Constant Rates of Strain Smith, R. E.;Wahls, H. E.
  20. Part Ⅱ; Permeability Characteristics. Can. Geotec. J. 20 v.20 The Permeability of Natural Soft Clay Travenas, F.;Jean, P.;Leblond. P.;Leroueil, S.
  21. Fundamental Soil Mechanics Taylor, D. W.
  22. Journal of the Soil Mechanics and Foundations Engineering Divison v.97 no.SM10 Consoidation at Constant Rate of Strain Wissa, A.E.Z.;Christian, J.T.;Davis, E.H.;Heilber, S.