Consolidation Clay Radial

Radial consolidation of clay using compressibility indices

2 RADIAL CONSOLIDATION OF CLAY USING COMPRESSIBILITY INDICES AND VARYING HORIZONTAL PERMEABILITY Buddhima Indraratna, Cholachat …

Radial consolidation of clay using compressibility indices

A system of vertical drains, with surcharge load to accelerate consolidation by shortening the drainage path, is one of the most popular methods of soft ground improvement The conventional radial consolidation theory (including smear and well resistance) has been commonly used to predict the behaviour of vertical drains in soft clay

UNDAMENTALS OF ONSOLIDATION - UMass Lowell

Revised 03/2013 Slide 1 of 74 14330 SOIL MECHANICS Consolidation FUNDAMENTALS OF CONSOLIDATION CLAY SAND SAND DEPTH (Vertical Stress Increase) CONSOLIDATION: Volume change in saturated soils caused by the expulsion of pore water from loading

The Radial Consolidation of Clay Soils | Géotechnique

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

(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

The Radial Consolidation of Clay Soils - researchgatenet

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

CONSOLIDATION CHARACTERISTICS OF KAOLINITIC CLAY …

consolidation due to radial drainage The effects of sand drains of different ‘n’ values (ratio of drain diameter to sample diameter) on consolidation characteristics (coefficient of consolidation ’Cr’ due to radial drainage) of Kaolinite clay are undertaken to investigate the settlement characteristics

Radial consolidation of clay using compressibility indices

University of Wollongong Research Online Faculty of Engineering - Papers (Archive) Faculty of Engineering and Information Sciences 2005 Radial consolidation of clay using compressibility indices and varying horizontal permeability B Indraratna University of Wollongong, [email protected] C Rujikiatkamjorn University of Wollongong, …

Comparison of Radial Consolidation Behavior of Clay under

methods for calculating radial consolidation of clay is described in the following example Radial consolidation calculation of OC clay layer with c vr = 000462 m2/day, r w = 038 m, r e = 152 m and t c = 30 days is examined All three types of cyclic loading applied to the clay layer are shown in figure1

Comparison of Radial Consolidation Behavior of Clay under

So the investigation of the radial consolidation is inevitable Soils may be subjected to cyclic loading such as silos, tanks, etc This paper presents semi-analytical solutions for radial consolidation and investigates the consolidation behavior under three types of cyclic loading

RADIAL CONSOLIDATION OF LIGHTLY …

linear theory of consolidation for radial flow is developed [4] but it is valid for NC Clays only No theory is available to predict the radial consolidation of lightly over consolidated soils The non-linear theory of consolidation for radial flow is extended to cover the lightly over consolidated clays as a phase change process The void

Radial consolidation characteristics of soft undisturbed

In recent years, reconstituted small samples have often been used to assess the performance of radial consolidation due to prefabricated vertical drains (PVDs), but the permeability and compressibility of samples of undisturbed soil often differ from those of the remoulded ones

Laboratory study on radial consolidation and deformation

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

Radial consolidation of a phase-change soil

Radial consolidation of a phase-change soil R F SCOTT* An Ol'erconsolidated sensithe clay has been rep­ resented by a one-dimensional compressional model in which the clay structure is rigid both below and above the maximum past effective stress and collapses at this stress from a …

Accelerated Consolidation of Soft Clays Using Wick Drains

consolidation also produced a strength increase in the soft soils that allowed the fill to be soft clay and silty clay These deposits extended as deep as 60 feet under the toe of and the radial time factor T for sand drains, as outlined in Leonards (1962)

The Radial Consolidation of Clay Soils | Géotechnique

The Radial Consolidation of Clay Soils R A Barron, P L Berry and W B Wilkinson An experimental assessment of displacement fluctuations in a 2D granular material subjected to shear V Richefeu, G Combe and G Viggiani CORRESPONDENCE AN EXPERIMENTAL INVESTIGATION OF THE STRESSES IN ANGLE BRACKETS

Module 5 - NPTEL

Module 5 CONSOLIDATION (Lectures 27 to 34) Topics 124 Effect of Smear Zone on Radial Consolidation 125 Calculation of the Degree of Consolidation with Vertical and Radial Drainage To understand the basic concepts of consolidation, consider a clay layer of thickness

Radial consolidation of soft soil under cyclic loads

In this note, a model for partially drained radial consolidation under cyclic loading is proposed This is achieved through the application of radial consolidation theory and the internal generation of excess pore pressure predicted by an undrained cyclic model

SSGG 8 - Consolidation of Soft Clays through Radial Flow

Consolidation of Soft Clays through Radial Flow Using Hydraulically Pressurized Oedometer Shah MV and Shroff AV structure of marine clay The rate of consolidation purely depends on the expulsion of pore water According to Barden, for primarily consolidation the total

COEFFICIENT OF CONSOLIDATION FOR VERTICAL AND …

ABSTRACT: The knowledge of the rate at which the settlement of clay layer takes place is very important in the design of vertical drain The coefficient of consolidation, whether it is vertical or radial …

THE RADIAL CONSOLIDATION OF CLAY SOILS - TRID

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

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

Consolidation of Soft Clays through Radial Flow Using

Abstract Experimental modelling of prefabricated vertical geodrains namely sand drains, sandwick, coir-jute drain and polypropylene fibre drain of different size (diameter) is carried out using modified hydraulically pressurised Oedometer through inward radial drainage to evaluate various consolidation …

Comparative Study of Linear and Non-Linear - SpringerLink

Abstract Many clays in situ are lightly overconsolidated with overconsolidation ratio ranging between 10 and 40 due to various reasons However, the conventional theories used for analysis of radial consolidation assume the soils to be normally consolidated

Consolidation for Radial Drainage under Time-Dependent

Four different loading rates were applied in the consolidation tests on three types of remolded clay with various plasticity indices to study the behavior of radial consolidation

Anisotropic Consolidation Behavior of Soft Bangkok Clay

ABSTRACT: The anisotropic consolidation behavior of soft Bangkok clay is investigated by means of constant rate of strain consolidation tests with vertical and radial drainage conditions Conventional oedometer tests were performed to verify the results of constant rat e of strain consolida-

Constant Rate of Strain Consolidation with Radial Drainage

Constant Rate of Strain Consolidation with Radial Drainage ABSTRACT: This paper describes a method of determining the consolidation characteristics of soft Bangkok clay under the radial drainage con-dition by using a newly developed constant rate of strain (CRS) consolidometer A new formulation for this type of test was proposed A series of

Comparison of Radial Consolidation Behavior of Clay under

So the investigation of the radial consolidation is inevitable Soils may be subjected to cyclic loading such as silos, tanks, etc This paper presents semi-analytical solutions for radial consolidation and investigates the consolidation behavior under three types of cyclic loading

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

10 CONSOLIDATION - peopleengunimelbeduau

103 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 55 The problem will be illustrated for the situation shown in Fig 105, in which a compressible clay is sandwiched between two relatively

Comparative Study of Linear and Non-Linear Theories of

preconsolidation stress during the consolidation process under external loading This paper presents a comparison of the results of linear and non-linear theories of radial consolidation of lightly OC clays The effects of over-consolidation ratio, stress increment ratio and recompres-sion to virgin compression compressibility ratio are studied

Analysis of Large-Strain Consolidation Behavior of Soil

The degree of consolidation calculated by Hansbo develops faster than ALSC (, the average degree of consolidation defined by stress)-radial drainage, but slower than ALSC ()-radial drainage In the ALSC model, is always been faster than

Consolidation of thick clay layer by radial flow - non

Hansbo, S (1981), "Consolidation of fine grained soils by prefabricated drains", Proceedings of the 10th International Conference on Soil Mechanics and Foundation Engineering, Stockholm, Sweden, June, 3, 667-682

Evaluation of Vertical Drain-enhanced Radial Consolidation

the permeability of remolded clay (tavenas et al 1983, Bergado et al 1991, hird and moseley 2000, sathananthan and indraratna 2006) in this study, modification of hansbo’s solution is proposed to evaluate the degree of radial consolidation, considering the consolidation characteristics of remolded clay characterisitcs of the modified

Location

CONTACT INFO