Analyse critique de la théorie de consolidation unidimensionnelle de Terzaghi

Tavenas, F.; Brucy, M; Magnan, J; Rochelle, P. La; Roy, M.

doi:10.1051/geotech/1979007029

Cited by 22 publications

(6 citation statements)

References 4 publications

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“…One of the liabilities one faces when using Terzaghi's step-loaded method lies in the assumption that k, C , and m remain constant during that particular consolidation load step (Tavenas et al 1979). Both C and mainly m show a tendency to decrease with increasing stress (Abeele 1984), and there is no reason to doubt that the bthavior would be different as the void ratio is reduced during any particular consolidation step.…”

Section: The Specimen Dimensions: 100 MM X 100 Mm X 26 Mmmentioning

confidence: 99%

Consolidation and shear failure leading to subsidence and settlement. Final report

Abeele¹,

Nyhan²,

Hakonson³

et al. 1986

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Subsidence and settlement are phenomena that are much more destructive than generally thought. In shallow land burials they may lead to cracking of the overburden and eventual exposure and escape of waste material. The primary causes are consolidation and cave-ins. Laboratory studies performed at Los Alamos permit us to predict settlement caused by consolidation or natural compaction of the crushed tuff overburden. We have also investigated the shear failure characteristics of crushed tuff that may lead to subsidence. Examples of expected settlement and subsidence are calculated based on the known geotechnical characteristics of crushed tuff. The same thing is done for bentonite/tuff mixes because some field experiments were performed using this additive (bentonite) to reduce the hydraulic conductivity of the crushed tuff. Remedial actions, i.e., means to limit the amount of settlement, are discussed. We finally discuss our field experiment, which studies the influence of subsidence on layered systems in general and on biobarriers in particular. The share of the produced cavities is compared with cavities produced by idealized voids in an idealized environment. Study of root penetration at subsidence sites gives us an indication of the remaining degree of integrity.

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Section: The Specimen Dimensions: 100 MM X 100 Mm X 26 Mmmentioning

confidence: 99%

Consolidation and shear failure leading to subsidence and settlement. Final report

Abeele¹,

Nyhan²,

Hakonson³

et al. 1986

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“…One of the liabilities one faces when using Terzaghi's step-loaded method lies in the assumption that k, C v , and m v remain constant during that particular consolidation load step (Tavenas et al 1979). Both C v and, mainly, m v show a tendency to decrease with increasing stress (Abeele 1984) and there is no reason to doubt that the behavior would be different as the void ratio is reduced during any particular consolidation step.…”

Section: Studies At Los Alamosmentioning

confidence: 99%

Consolidation and shear failure leading to subsidence and settlement. Part I

Abeele¹

1985

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Subsidence and settlement are phenomena that are much more destructive than generally thought. In shallow land burials they may lead to cracking of the overburden and eventual exposure and escape of waste material. The primary causes are consolidation and cave-ins. Laboratory studies performed at Los Alamos permit us to predict settlement caused by consolidation or natural compaction of the crushed tuff overburden. We have also investigated the shear failure characteristics of crushed tuff that may lead to subsidence. Examples of expected settlement and subsidence are calculated based on the known geotechnical characteristics of crushed tuff. The same thing is done for bentonite/tuff mixes because some field experiments were performed using this additive (bentonite) to reduce the hydraulic conductivity of the crushed tuff. Remedial actions, i.e., means to limit the amount of settlement, are discussed. Finally, we briefly comment on our current field experiment, which studies the influence of subsidence on layered systems in general and on biobarriers in particular.

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“…Terzaghi (1923) [2] has proposed the onedimensional consolidation for saturated soils firstly. Several researchers and practitioners such as [3][4][5][6][7][8][9][10][11][12] dealt with the limits of Terzaghi's theory in the case of soils compressible clay. L Arabet [13], A. Hana et al [14] and M Klai et al [15], discussed the one-dimensional consolidation of fine saturated soils, in the form presented by Terzaghi in 1925, and described the oedometric test, which provides the parameters of this theory.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of Oedometer Test

Agraine

Bouali

2020

Selected Scientific Papers - Journal of Civil Engineering

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The oedometric test is a test widely used in civil engineering. The main objective of this article has been to investigate the primary consolidation behaviour of the intact soil samples by comparing the results obtained from finite element analysis computations in PlAXIS2D with the experimental result of the soil samples obtained from the site of the Al-Ahdab oil field in the east of Iraq. Three different material models were utilized during the finite element analysis, comparing the performance of the more advanced constitutive Soft Soil material model against the modified Cam Clay and Mohr-Coulomb material models. Numerical results of Oedomter test show that the Soft Soil model behaviour is the most appropriate model to describe the observed behaviour.

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Analyse critique de la théorie de consolidation unidimensionnelle de Terzaghi

Cited by 22 publications

References 4 publications

Consolidation and shear failure leading to subsidence and settlement. Final report

Consolidation and shear failure leading to subsidence and settlement. Final report

Consolidation and shear failure leading to subsidence and settlement. Part I

Numerical Modelling of Oedometer Test

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