Effect of strain rate on isotropically consolidated kaolin over a wide range of strain rates in the triaxial apparatus

TY - GEN

T1 - Effect of strain rate on isotropically consolidated kaolin over a wide range of strain rates in the triaxial apparatus

AU - Quinn, T. A. C.

AU - Brown, M. J.

N1 - This research was supported by the Engineering and Physical Sciences Research Council (EPSRC, grant No. EP/E031749/1).

PY - 2011

Y1 - 2011

N2 - Soils display strain rate dependant behaviour which may pose a problem in geotechnical engineering applications. In this study a modified lectromechanical triaxial apparatus was used to shear normally consolidated reconstituted Speswhite kaolin samples over a range of strain rates from 1%/hr to 180,000%/hr. The purpose of the investigation was to explore the variation of rate dependant soil response to increased in both drained and undrained conditions. Results show that the shear strength of the soil to be rate dependant at all of the strain rates investigated. In the case of a drained response overall strength decreased with increasing strain rate, with the rate effects displaying strain level dependency. Where the response was undrained the soil achieved a greater strength with increasing strai rate which increased at a greater rate than the generally assumed 10% increase in strength per log cycle increase in strain rate.

AB - Soils display strain rate dependant behaviour which may pose a problem in geotechnical engineering applications. In this study a modified lectromechanical triaxial apparatus was used to shear normally consolidated reconstituted Speswhite kaolin samples over a range of strain rates from 1%/hr to 180,000%/hr. The purpose of the investigation was to explore the variation of rate dependant soil response to increased in both drained and undrained conditions. Results show that the shear strength of the soil to be rate dependant at all of the strain rates investigated. In the case of a drained response overall strength decreased with increasing strain rate, with the rate effects displaying strain level dependency. Where the response was undrained the soil achieved a greater strength with increasing strai rate which increased at a greater rate than the generally assumed 10% increase in strength per log cycle increase in strain rate.

KW - Strain rate

KW - Rate effects

UR - https://www.iospress.nl/book/deformation-characteristics-of-geomaterials/

U2 - 10.3233/978-1-60750-822-9-607

DO - 10.3233/978-1-60750-822-9-607

M3 - Conference contribution

SN - 9781607508212

SP - 607

EP - 613

BT - Proceedings of the Fifth International Symposium on Deformation Characteristics of Geomaterials

A2 - Chung, Choong-Ki

A2 - Kim, Hyun-Ki

A2 - Lee, Jong-Sub

A2 - Jung, Young-Hoon

A2 - Kim, Dong-Soo

PB - IOS Press

CY - Amsterdam

T2 - Fifth International Symposium on Deformation Characteristics of Geomaterials

Y2 - 1 September 2011 through 3 September 2011

ER -