Abstract
A nonlinear theory of consolidation under linear loading is formulated for various load-increment ratios. Variable coefficients of permeability and volume decrease and constant coefficient of consolidation are assumed during consolidation. The results obtained for a very small load-increment ratio very closely follow those of Schiffman's linear loading theory. A hydraulic loading odometer having provisions for applying linear loading and multipoint pore-pressure measurement is developed. Laboratory linear loading tests on kaolin and Calcuttta silty clay under a load-increment ratio K of 0.25 indicate that the experimental pore pressures dissipate at a faster rate than predicted by both non-linear and Schiffman theories. Improved agreement between experiment and theories are observed for K = 4. A quasi-preconsolidation effect is observed during early stages of consolidation. The void ratio effective stress relationship based on base pore pressures and isochrones obtained during slow rate of linear loading tests very closely follows the curve determined conventionally.
Issue Section:
Research Papers
References
1.
Terzaghi
, K.
, Theoretical Soil Mechanics
, John Wiley
, New York
, 1943
.2.
Terzaghi
, K.
and Frohlich
, O. K.
, Theorieder Setzung von Tonschichten
, Deuticke
, Vienna
, 1936
.3.
Taylor
, D. W.
, Fundamentals of Soil Mechanics
, John Wiley
, New York
, 1948
.4.
Schiffman
, R. L.
, “Consolidation of Soils Under Time Dependent Loading and Variable Permeability
,” Proceedings of Highway Research Board
, Vol. 37
, Washington, DC
, 1958
, pp. 584
-617
.5.
Barden
, L.
and Berry
, P. L.
, “Consolidation of Normally Consolidated Clay
,” Journal of the Soil Mechanics and Foundations Division
0044-7994. Proceedings of the American Society of Civil Engineers
, Vol. 91
, No. SMS
, 09
1965
, pp. 15
-45
.6.
Davis
, E. H.
and Raymond
, G. P.
, “A Non-Linear Theory of Consolidation
,” Geotechnique
0016-8505, Vol. 15
, No. 2
, 06
1965
, pp. 161
-173
.7.
Janbu
, N.
, “Consolidation of Clay Layers Based on Non-Linear Stress-Strain
,” Proceedings of Sixth International Conference on Soil Mechanics and Foundation Engineering
, Vol. 2
, Montreal
, 1965
, pp. 83
-87
.8.
Barden
, L.
, “Consolidation of Clay with Non-Linear Viscosity
,” Geotechnique
0016-8505, Vol. 15
, No. 4
, 12
1965
, pp. 345
-352
.9.
Leonards
, G. A.
and Girault
, P.
, “A Study of the One-Dimensional Consolidation Test
,” Proceedings of the Fifth International Conference on Soil Mechanics and Foundation Engineering
, Vol. 1
, Paris
, 1961
, p. 213.10.
Leonards
, G. A.
and Ramiah
, B. K.
, “Time Effects in the Consolidation of Clay
,” Papers on Soils—1959 Meetings
, STP 254, American Society for Testing and Materials
, Philadelphia
, 1959
, p. 116.11.
Leonards
, G. A.
and Altschaeffl
, A. G.
, “Compressibility of Clay
,” Journal of the Soil Mechanics and Foundation Division
, Proceedings of the American Society of Civil Engineers
, Vol. 90
, No. SM5
, 09
1964
, pp. 133
-155
.12.
Aboshi
, H.
, Yoshikini
, H.
, and Maruyama
, S.
, “Constant Loading Rate Consolidation Test
,” Soils and Foundations
, Vol. X
, No. 1
, 01
1970
, pp. 43
-56
.13.
Gangopadhyay
, C. R.
and Bhattacharya
, U.
, “Consolidation of a Sedimented Kaolinite under Linear Loading
,” Proceedings of Second South East Asian Conference on Soil Engineering
, Singapore
, 1970
, pp. 321
-333
.14.
Wahls
, H. E.
and DeBodoy
, N. S.
, Discussion of “Interpretation of Consolidation Test by Crawford
,” Journal of the Soil Mechanics and Foundation Division
, Proceedings of the American Society of Civil Engineers
, Vol. 91
, No. SM3
, 05
1965
, pp. 147
-152
.15.
Shields
, D. H.
and Rowe
, P. W.
, “Radial Drainage Odometer for Laminated Clays
,” Journal of the Soil Mechanics and Foundation Division
, Proceedings of the American Society of Civil Engineers
, Vol. 91
, No. SM1
, 01
1965
, pp. 15
-23
.16.
Bishop
, A. W.
and Henkel
, D. J.
, The Measurement of Soil Properties in the Triaxial Test
, Edward Arnold
, London
, 1962
.17.
Das
, S.
and Gangopadhyay
, C. R.
, “Undrained Stresses and Deformations Under Footings on Clay
,” Journal of Geotechnical Division
, Proceedings of the American Society of Civil Engineers
, Vol. 104
, No. GT1
, 01
1978
, pp. 11
-25
.18.
Abdelhamid
, M. S.
and Krizek
, R. J.
, “At-Rest Lateral Earth Pressure of a Consolidating Clay
,” Journal of the Geotechnical Engineering Division
0093-6405, Proceedings of the American Society of Civil Engineers
, Vol. 102
, No. GT7
, 07
1976
, pp. 721
-738
.19.
Bhattacharya
, U.
, “Theoretical and Experimental Investigation of Non-Linear Consolidation of Clay under Time-Dependent Loading
, thesis for degree of Doctor of Philosophy, Jadavpur University
, Calcutta, India, 1980
.20.
Smith
, R. W.
and Wahls
, H. E.
, “Consolidation Under Constant Rates of Strain
,” Journal of the Soil Mechanics and Foundation Division, Proceedings of the American Society of Civil Engineers
, Vol. 95
, No. SM2
, 03
1969
, pp. 519
-539
.21.
Wissa
, A. E. Z.
, Christian
, J. T.
, Davis
, E. H.
, and Heiberg
, S.
, “Consolidation at Constant Rate of Strain
,” Journal of the Soil Mechanics and Foundation Division, Proceedings of the American Society of Civil Engineers
, Vol. 97
, No. SM10
, 10
1971
, pp. 1393
-1413
.22.
Lowe
, J.
, Jonas
, E.
, and Obrician
, V.
, “Controlled Gradient Consolidation Test
,” Journal of the Soil Mechanics and Foundation Division, Proceedings of the American Society of Civil Engineers
, Vol. 95
, No. SM1
, 01
1969
, pp. 77
-97
.
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