The Radial Consolidation of Clay Soils | Géotechnique
25-5-2015 · Synopsis. The radial consolidation theory of Barron (1948) and McKinlay (1961) has been extended to take account of smear at the drainage boundaries, a decreasing permeability and compressibility and non-linear structural viscosity for an homogeneous anisotropic clay.
Radial consolidation of PVD-Installed normally ...
Fig. 9 shows the variation of average degree of radial consolidation in PVD-installed soft deposit according to disturbance degree of hydraulic conductivity caused by PVD installation (α = k h w / k h). In agreement with Nguyen and Kim (2018), the results indicated that degree of radial consolidation reduced as the α value decreased.
10. CONSOLIDATION - University of Melbourne
10.3 CONSOLIDATION AS A SEEPAGE PROBLEM The seepage of water from the soil during consolidation may be represented by means of a head diagram of the type shown in Fig. 5.5. The problem will be illustrated for the situation shown in Fig. 10.5., in which a compressible clay is sandwiched between two relatively
UNDAMENTALS OF ONSOLIDATION - uml.edu
Revised 03/2013 Slide 2 of 74 14.330 SOIL MECHANICS Consolidation CLAY SAND SAND DEPTH (Vertical Stress Increase) after Figure 7.1a. Das FGE (2005). At Time of Initial Loading (t = 0) Pore water takes initial change in
Radial consolidation of clay using compressibility indices ...
RADIAL CONSOLIDATION OF CLAY USING COMPRESSIBILITY INDICES AND VARYING HORIZONTAL PERMEABILITY Buddhima Indraratna PhD, DIC, MSc (Lond.), FIEAust., FASCE Professor of Civil Engineering, Faculty of Engineering, University of Wollongong, Wollongong City, NSW 2522, Australia Tel: +61-2-4221-3046; Fax: +61-2-4221-3238 E-mail: [email protected]
Laboratory study on radial consolidation and …
Laboratory study on radial consolidation and deformation in clay reinforced with stone columns. Ana Cimentada, a Almudena Da Costa, a Jorge Cañizal, a César Sagaseta a. a Geotechnical Engineering Group, Department of Ground Engineering and Materials Science, University of Cantabria, Avda. de Los Castros, s/n, 39005, Santander, Spain.
(PDF) Theoretical Equations of Vertical and Radial ...
Degree of consolidation, U, is defined in two ways: (1) by settlement analysis and (2) by dissipation of pore pressure. Equations of vertical and radial consolidations are derived by equating the ...
consolidation clay radial - rekonstrukceprokazdeho.cz
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Radial consolidation characteristics of soft …
Soft clay samples in marine environment were obtained from a trial site (BFTF) along the Pacific Highway in the town of Ballina, south of Brisbane (see Fig. 1).A sample of undisturbed soil was extracted from a depth of 1.5 m, and the sub-soil within 1.3–2.2 m depth can be classified as highly compressible marine clay with very low permeability and high plasticity (CH).
Horizontal Coefficient of Consolidation of Soft Bangkok Clay
SEAH ET AL. ON SOFT BANGKOK CLAY 3 FIG. 2—Relationship among α, β, and n. (1948) to determine the horizontal coefficients of consolidation and permeability under radial flow condition. For CRS tests with radial drainage, the horizontal coefficient of permeability can be estimated from the following equation: k h = α v pγ wr 2 e u bH (9)
Theoretical Equations of Vertical and Radial …
25-12-2011 · Abstract. Degree of consolidation, U, is defined in two ways: (1) by settlement analysis and (2) by dissipation of pore pressure.Equations of vertical and radial consolidations are derived by equating the above two U.The new equations are compared with the existing equations of vertical and radial consolidations.
A large-strain radial consolidation theory for soft clays ...
A large-strain radial consolidation theory for soft clays improved by vertical drains X. GENG and H.-S. YU† A system of vertical drainswith combinedvacuum and surcharge preloading is an effective solution for promoting radial flow, accelerating consolidation. However, when a mixture of soil and water is
CONSOLIDATION CHARACTERISTICS OF KAOLINITIC CLAY …
Consolidation characteristics of kaolinitic clay through radial drainage using geometrical vertical sand drains 0 20 40 60 80 100 0.1 10 1000 (1-Ur/Uo)% Time in min r1 r2 r3 Fig. 4 Dissipation of excess pore water pressure vs. log’t’ in min for three radial points at 160KPa (n=11.04, bsd) 0 20 40 60 80 100 0.1 1 10 100 1000 10000 (1-Ur/Uo ...
(PDF) A large-strain radial consolidation theory for …
A large-strain radial consolidation theory for soft clays improved by vertical drains. ... into radial consolidation theory. ... The clay lay er in the configuration shown by Fig. 1(b) ...
THE RADIAL CONSOLIDATION OF CLAY SOILS
the radial consolidation of clay soils. the radial consolidation theory of barron (1948) and mckinlay (1961) has been extended to take account of smear at the drainage boundaries, a decreasing permeability and compressibility, and non-linear structural viscosity for an homogeneous anisotropic clay.
consolidation clay radial - stavrekopraha.cz
The Radial Consolidation of Clay Soils Géotechnique. 25/05/2015 Synopsis The radial consolidation theory of Barron (1948) and McKinlay (1961) has been extended to take account of smear at the drainage boundaries, a decreasing permeability and compressibility and non-linear structural viscosity for an homogeneous anisotropic clay.
RADIAL CONSOLIDATION OF LIGHTLY OVERCONSOLIDATED CLAYS
Radial consolidation of lightly OC Clays ³ and higher values of W ³ e w e w r r o f r r o s e e r dr e e r dr U S S 2 2 (8) with eo e PCc log>@1 SIR(1 W) for OC phase, (9) ¼ º « ¬ ª ¿ ¾ ½ ¯ ® OCR SIR W eo e Cc OCR (1) Plog log for NC
Consolidation of Soft Clays through Radial Flow …
Shah, M.V., Shroff, A.V.: Effect of ratio of influence zone and type of vertical drain on consolidation of soft clay due to radial flow. In: Proc. Fourth International Conference on Soft- Soil Engineering, Canadian Geotechnical Society, University of Alberta, Canada, vol. I, pp. 765–773 (2006) Google Scholar
Radial consolidation of clay using compressibility …
The conventional radial consolidation theory (including smear and well resistance) has been commonly used to predict the behaviour of vertical drains in soft clay. Its mathematical formulation is based on the small strain theory; and for a given stress range, a constant volume compressibility ( m v ) and a constant coefficient of horizontal permeability ( k h ) are assumed.