Fastest Rapid Loading Methods of Vertical and Radial Consolidations

Tewatia, Sudhir Kumar; Bose, P. R.; Sridharan, A.

doi:10.1061/(asce)gm.1943-5622.0000213

Cited by 12 publications

(4 citation statements)

References 19 publications

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“…The basic criterion for "matching" methods is assumed to be the compatibility of the test with the theoretical solution. The following methods for determining the coefficient of consolidation were applied using the aforementioned criterion in the analysis: logarithm of time CA (Casagrande & Fadum 1940), inflection point IP (Mesri & Feng 1999), logarithmic LL (Sridharan & Prakash 1997), modified velocity (δ − logdδ/dt − VT 1 , δ − dδ/dt − VT 2 ) (Tewatia 1998, Tewatia et al 2013, Olek et al 2016. The verification tool for the calculated c v values was the approximation method in two variants: approximation course of strain (ACOS) and approximation course of pore pressure (ACOP) (Dobak & Pająk 2012, Dobak & Gaszyński 2014, whereby the course of the experiment is compared to the theoretical solution.…”

Section: Methodsmentioning

confidence: 99%

Determination of quasi-filtration phase of consolidation based on experimental and theoretical course of the uniaxial deformation and distribution of pore pressure

Olek

Woźniak²

2016

geol

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Abstract:In this work the consolidation characteristics of the experimental and theoretical process of consolidation was studied. The analyses were carried out on the basis of the axial soil deformation progress and the pore pressure dissipation. The applied methodology gives possibility for the simultaneous comparison of the experimental and theoretical consolidation data and verification of the validity of calculated values of coefficient of consolidation, estimated using different methods. The aim of this research was to put some light on the quasi-filtration phase of consolidation. The results of consolidation studies on five high quality paste samples prepared from Krakowiec clays showed that the quasi-filtration occurs only in specific stages of the whole process. The analysis of changes in coefficient of consolidation depending on the degree of consolidation, enables the separation of the region of quasi-fixed values of c v , which corresponds to the quasi-filtration phase of consolidation.

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Section: Methodsmentioning

confidence: 99%

Determination of quasi-filtration phase of consolidation based on experimental and theoretical course of the uniaxial deformation and distribution of pore pressure

Olek

Woźniak²

2016

geol

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“…After 60 % consolidation vertical consolidation and radial consolidation, both are linear on d-dd/dt plot (Tewatia 1998(Tewatia , 2010Tewatia et al 2007Tewatia et al , 2012Tewatia et al , 2013. Here, the lines OA and OB are the lines joining points O and A, and O and B.…”

Section: Theoretical Considerationsmentioning

confidence: 99%

“…10 and 13, it can be shown that it leads to the following experimental Eq. 32 (Tewatia 2010;Tewatia et al 2012Tewatia et al , 2013 …”

Section: Theoretical Considerationsmentioning

confidence: 99%

Principle of Super Position of Rate of Settlement in 2D and 3D Consolidations

Tewatia

2015

Geotech Geol Eng

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A principle of super position of rate of settlement for two and three dimensional consolidations is introduced. Using this principle, equations for two and three dimensional consolidations are derived in simple and short manner. They are compared with the existing equations of (3D) consolidation. It is shown that they are same. In literature 3D consolidation equation exists in polar co-ordinates only that means for radial and vertical consolidation. New equations are derived for 2D and 3D consolidation in Cartesian co-ordinates. A method of 3D consolidation is proposed when the time or settlement at the instant of load-increment are not known. The method is applicable in step as well as (uniform and nonuniform) ramp loading. A method is suggested to obtain the time-compression data of radial and 3D consolidation when only the vertical consolidation test is conducted and vice versa.

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“…Laboratory tests affirmed that parabolic excess pore pressure at the final stages of construction is more realistic than sinusoidal shape. Tewatia et al [13] derived a new equation for one-dimensional and three-dimensional consolidation as Eq. 11.…”

Section: Introductionmentioning

confidence: 99%