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Observed behavior of reconstituted clay along stress paths typical of excavations

Identifieur interne : 000717 ( PascalFrancis/Corpus ); précédent : 000716; suivant : 000718

Observed behavior of reconstituted clay along stress paths typical of excavations

Auteurs : A. Amorosi ; L. Callisto ; S. Rampello

Source :

RBID : Pascal:01-0252326

Descripteurs français

English descriptors

Abstract

The paper presents experimental results from a laboratory investigation on reconstituted samples of a stiff and overconsolidated clay. The experimental programme was carried out using stress path triaxial cells to investigate the mechanical behaviour of the soil when subjected to stress paths typical of excavations. Samples were compressed along continuous drained paths under approximately K0 conditions to different values of the maximum effective stress and overconsolidation ratio OCR. After compression to the desired values of OCR pairs of samples were sheared along two different drained stress paths: compression with decreasing horizontal effective stress under constant vertical effective stress, and extension with decreasing vertical effective stress under constant horizontal effective stress. For OCR = 3, undrained compression and extension tests were also carried out. In the interpretation of experimental results, the effect of the direction of the stress paths on the shear stiffness is evaluated and distinguished from the influence of the previous stress history. The observed stress dilatancy and mobilisation of the shear strength are also discussed

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

pA  
A05       @2 1
A08 01  1  ENG  @1 Observed behavior of reconstituted clay along stress paths typical of excavations
A09 01  1  ENG  @1 Pre-failure deformation characteristics of geomaterials
A11 01  1    @1 AMOROSI (A.)
A11 02  1    @1 CALLISTO (L.)
A11 03  1    @1 RAMPELLO (S.)
A12 01  1    @1 JAMIOLKOWSKI (Michele) @9 ed.
A14 01      @1 University of Rome 'La Sapienza' @3 ITA @Z 1 aut. @Z 2 aut.
A14 02      @1 University of Messina @3 ITA @Z 3 aut.
A15 01      @1 Department of Structural and geotechnical Engineering, Politecnico di Torino @3 ITA @Z 1 aut.
A18 01  1    @1 International Society for Soil Mechanics and Geotechnical Engineering - ISSMGE @3 INC @9 patr.
A20       @1 35-42 @7 4
A21       @1 1999
A23 01      @0 ENG
A25 01      @1 A.A. Balkema @2 Rotterdam
A26 01      @0 90-5809-076-0
A30 01  1  ENG  @1 International symposium on pre-failure deformation characteristics of geomaterials - IS Torino 99 @2 2 @3 Torino ITA @4 1999-09-28
A43 01      @1 BRGM @2 L/14889
A44       @0 0200
A45       @0 15 ref.
A47 01  1    @0 01-0252326
A60       @1 C
A61       @0 A
A66 01      @0 NLD
C01 01    ENG  @0 The paper presents experimental results from a laboratory investigation on reconstituted samples of a stiff and overconsolidated clay. The experimental programme was carried out using stress path triaxial cells to investigate the mechanical behaviour of the soil when subjected to stress paths typical of excavations. Samples were compressed along continuous drained paths under approximately K0 conditions to different values of the maximum effective stress and overconsolidation ratio OCR. After compression to the desired values of OCR pairs of samples were sheared along two different drained stress paths: compression with decreasing horizontal effective stress under constant vertical effective stress, and extension with decreasing vertical effective stress under constant horizontal effective stress. For OCR = 3, undrained compression and extension tests were also carried out. In the interpretation of experimental results, the effect of the direction of the stress paths on the shear stiffness is evaluated and distinguished from the influence of the previous stress history. The observed stress dilatancy and mobilisation of the shear strength are also discussed
C02 01  2    @0 226B01
C02 02  X    @0 001E01O01
C03 01  2  FRE  @0 Argile raide
C03 01  2  ENG  @0 stiff clays
C03 01  2  SPA  @0 Arcilla tenaz
C03 02  2  FRE  @0 Matériau surconsolidé
C03 02  2  ENG  @0 overconsolidated materials
C03 02  2  SPA  @0 Material sobreconsolidado
C03 03  2  FRE  @0 Excavation
C03 03  2  ENG  @0 excavations
C03 03  2  SPA  @0 Excavación
C03 04  2  FRE  @0 Contrainte
C03 04  2  ENG  @0 stress
C03 04  2  SPA  @0 Coacción
C03 05  2  FRE  @0 Déformation sous contrainte
C03 05  2  ENG  @0 strain
C03 05  2  SPA  @0 Deformación bajo tensión
C03 06  2  FRE  @0 Module cisaillement
C03 06  2  ENG  @0 shear modulus
C03 06  2  SPA  @0 Módulo cizalladura Coulomb
C03 07  2  FRE  @0 Latium @2 NG
C03 07  2  ENG  @0 Latium Italy @2 NG
C03 07  2  SPA  @0 Lacio @2 NG
C03 08  2  FRE  @0 Argile Vallerica @4 INC
C06       @0 TAS @0 ILS
C07 01  2  FRE  @0 Italie @2 NG
C07 01  2  ENG  @0 Italy @2 NG
C07 01  2  SPA  @0 Italia @2 NG
C07 02  2  FRE  @0 Europe Sud @2 NG
C07 02  2  ENG  @0 Southern Europe @2 NG
C07 02  2  SPA  @0 Europa Sur @2 NG
C07 03  2  FRE  @0 Europe
C07 03  2  ENG  @0 Europe
C07 03  2  SPA  @0 Europa
N21       @1 176

Format Inist (serveur)

NO : PASCAL 01-0252326 BRGM
ET : Observed behavior of reconstituted clay along stress paths typical of excavations
AU : AMOROSI (A.); CALLISTO (L.); RAMPELLO (S.); JAMIOLKOWSKI (Michele)
AF : University of Rome 'La Sapienza'/Italie (1 aut., 2 aut.); University of Messina/Italie (3 aut.); Department of Structural and geotechnical Engineering, Politecnico di Torino/Italie (1 aut.)
DT : Congrès; Niveau analytique
SO : International symposium on pre-failure deformation characteristics of geomaterials - IS Torino 99/2/1999-09-28/Torino ITA; Pays-Bas; Rotterdam: A.A. Balkema; Da. 1999; Pp. 35-42; ISBN 90-5809-076-0
LA : Anglais
EA : The paper presents experimental results from a laboratory investigation on reconstituted samples of a stiff and overconsolidated clay. The experimental programme was carried out using stress path triaxial cells to investigate the mechanical behaviour of the soil when subjected to stress paths typical of excavations. Samples were compressed along continuous drained paths under approximately K0 conditions to different values of the maximum effective stress and overconsolidation ratio OCR. After compression to the desired values of OCR pairs of samples were sheared along two different drained stress paths: compression with decreasing horizontal effective stress under constant vertical effective stress, and extension with decreasing vertical effective stress under constant horizontal effective stress. For OCR = 3, undrained compression and extension tests were also carried out. In the interpretation of experimental results, the effect of the direction of the stress paths on the shear stiffness is evaluated and distinguished from the influence of the previous stress history. The observed stress dilatancy and mobilisation of the shear strength are also discussed
CC : 226B01; 001E01O01
FD : Argile raide; Matériau surconsolidé; Excavation; Contrainte; Déformation sous contrainte; Module cisaillement; Latium; Argile Vallerica
FG : Italie; Europe Sud; Europe
ED : stiff clays; overconsolidated materials; excavations; stress; strain; shear modulus; Latium Italy
EG : Italy; Southern Europe; Europe
SD : Arcilla tenaz; Material sobreconsolidado; Excavación; Coacción; Deformación bajo tensión; Módulo cizalladura Coulomb; Lacio
LO : BRGM-L/14889
ID : 01-0252326

Links to Exploration step

Pascal:01-0252326

Le document en format XML

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<div type="abstract" xml:lang="en">The paper presents experimental results from a laboratory investigation on reconstituted samples of a stiff and overconsolidated clay. The experimental programme was carried out using stress path triaxial cells to investigate the mechanical behaviour of the soil when subjected to stress paths typical of excavations. Samples were compressed along continuous drained paths under approximately K
<sub>0</sub>
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<sub>0</sub>
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<AU>AMOROSI (A.); CALLISTO (L.); RAMPELLO (S.); JAMIOLKOWSKI (Michele)</AU>
<AF>University of Rome 'La Sapienza'/Italie (1 aut., 2 aut.); University of Messina/Italie (3 aut.); Department of Structural and geotechnical Engineering, Politecnico di Torino/Italie (1 aut.)</AF>
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<sub>0</sub>
conditions to different values of the maximum effective stress and overconsolidation ratio OCR. After compression to the desired values of OCR pairs of samples were sheared along two different drained stress paths: compression with decreasing horizontal effective stress under constant vertical effective stress, and extension with decreasing vertical effective stress under constant horizontal effective stress. For OCR = 3, undrained compression and extension tests were also carried out. In the interpretation of experimental results, the effect of the direction of the stress paths on the shear stiffness is evaluated and distinguished from the influence of the previous stress history. The observed stress dilatancy and mobilisation of the shear strength are also discussed</EA>
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