Results 81 to 90 of about 164 (124)
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Preconsolidation pressure of Champlain clays. Part II. Laboratory determination
Canadian Geotechnical Journal, 1983A series of conventional and special consolidation tests was carried out on clay samples from 11 sites in the Champlain sea basin. The results show that, for a given clay at a given depth, there is a unique preconsolidation pressure – strain rate relationship independent of the tests carried out and that the relationships obtained in different ...
F Tavenas, S Leroueil
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A critical reappraisal of “preconsolidation pressure” interpretations using the oedometer test
Canadian Geotechnical Journal, 2010Over the past 70 years, a number of methods have been proposed for the interpretation of the characteristic vertical effective yield stress, or “preconsolidation pressure,” of compressible soils as defined using the standard oedometer test. The concept of the “preconsolidation pressure” has been extraordinarily useful in geotechnical engineering for ...
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Temperature Effect on Preconsolidation Pressure
Geotechnical Testing Journal, 1989Abstract A change in temperature is known to affect the deformation properties of a clay specimen. In order to study the effect quantitative y and its dependence on clay type a number of oedometer tests were carried out. Conventional incremental oedometer tests as well as constant-rate-of-strain tests were used. Test results clearly show
M Tidfors, G Sällfors
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A Note on Determination of the Preconsolidation Pressure
Journal of Testing and Evaluation, 2018Abstract The preconsolidation pressure, σ′y, is commonly interpreted by means of empirical observations (or graphical constructions) with respect to e–logσ′ stress patterns (e = void ratio, and σ′ = effective stress) exhibited in the conventional oedometer test.
Amin Soltani +3 more
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Prediction of the Preconsolidation Pressure and Recompression Index of Soils
Geotechnical Testing Journal, 1985Abstract Based on the generalized compressibility equation a procedure is given to estimate the preconsolidation pressure and the recompression index of stress and time dependent overconsolidated soils. This is based on knowledge of (1) the in-situ void ratio, (2) the liquid limit of the soil, (3) the in-situ overburden pressure, and (4)
TS Nagaraj, BR Srinivasa Murthy
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An approach for the determination of the preconsolidation pressure in sensitive clays
Canadian Geotechnical Journal, 1980The present methods for the determination of the preconsolidation pressure of clays are time consuming and expensive. A new method is proposed in which the clay is loaded in a "one-stage loading" to an axial stress in excess of the estimated preconsolidation pressure.
S. Leroueil, J. P. LeBihan, F. Tavenas
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Log-Log Method for Determination of Preconsolidation Pressure
Geotechnical Testing Journal, 1989Abstract A new method called the “log-log method” has been proposed for a more accurate determination of preconsolidation pressure. The method consists of plotting both the pressure p and corresponding void ratio e in logarithmic scale. The log e - log p plots result in two distinct straight lines.
BT Jose, A Sridharan, BM Abraham
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Preconsolidation pressures in the Battleford Formation, southern Saskatchewan, Canada
Canadian Journal of Earth Sciences, 1991Soft, surficial, unoxidized till of the Battleford Formation overlies hard, oxidized and unoxidized till of the Floral Formation. The difference in hardness between these two formations is the result of preconsolidation pressures that range from 1500 to 2200 kPa in the Floral Formation and from 350 to 750 kPa in the lower till unit of the Battleford ...
E. Karl Sauer, E. A. Christiansen
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Laboratory and field determination of preconsolidation pressures at Gloucester: Discussion
Canadian Geotechnical Journal, 1984yields and reaches a critical shear stress equal to about 50 kPa. The ratio between the critical shear stress and the preconsolidation pressure, which is equal to 0.3 1 for the Rigaud clay, is similar to those obtained on other sensitive clays.
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Effect of Freezing-Thawing on Preconsolidation Pressure
Geo-Congress 2023, 2023Seyed Morteza Zeinali +1 more
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