Results 131 to 140 of about 240 (174)

Temperature Effect on Preconsolidation Pressure

Geotechnical Testing Journal, 1989
Abstract 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, 2018
Abstract 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, Abbas Taheri, An Deng, Mahdieh Azimi   +3 more
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An approach for the determination of the preconsolidation pressure in sensitive clays

Canadian Geotechnical Journal, 1980
The 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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Prediction of the Preconsolidation Pressure and Recompression Index of Soils

Geotechnical Testing Journal, 1985
Abstract 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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Log-Log Method for Determination of Preconsolidation Pressure

Geotechnical Testing Journal, 1989
Abstract 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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Dissipated strain energy method for determining preconsolidation pressure

Canadian Geotechnical Journal, 2004
The dissipated strain energy method (DSEM), a new method for determining the preconsolidation pressure, is presented in this paper. Compared with the energy method, the DSEM uses dissipated strain energy and the slope of the unloading–reloading cycle (in the strain energy – effective consolidation stress space) for the plot to minimize the sample ...
L B Wang, J D Frost
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Preconsolidation pressures in the Battleford Formation, southern Saskatchewan, Canada

Canadian Journal of Earth Sciences, 1991
Soft, 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, 1984
yields 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, 2023
Seyed Morteza Zeinali, Sherif L. Abdelaziz   +1 more
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Determining Preconsolidation Stress and Penetration Pore Pressures from DMT Contact Pressures

Geotechnical Testing Journal, 1987
Abstract Over recent years, several geotechnical explorations in clay deposits have shown the flat dilatometer test (DMT) to provide reasonable estimates of in-situ overconsolidation ratio with depth. Why should the horizontal stress index (KD = initial contact pressure minus hydrostatic pressure normalized to the effective overburden ...
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