This Paper describes a simple technique for accurately measuring the mean local axial
strains of triaxial samples over a central gauge length. The technique makes use of an axial …

… triaxial tests using a new device for accurate measurement of axial strain. Measurement of
soil stiffness … achieved using conventional axial strain measurements together with simple and …

… equipment is a triaxial apparatus. Unfortunately, standard version of triaxial apparatus can
reliable measure … Such accuracy does not allow to determine stiffness referred to strain range …

… the triaxial apparatus for measuring the anisotropy of small strain stiffness of fine-grained
soils. … isotropy of small-strain stiffness that commonly occurs in many soils because of a one-…

… method for soil stiffness measurement in the triaxial test. The … triaxial testing device and
therefore has the potential to allow the non-linear stiffness characteristics of soil to be measured …

… stiffness of the supporting soil.3 It is well known that the stiffness of soil depends on the state
of stress in the soil.… as other variables, on the stiffness of sand have been conducted. 7, 8, 10 …

… All error sources noted above lead to an underestimation of soil stiffness. … The axial strain
measured externally using a conventional IDT is unreliable for measuring soil stiffness at axial …

… apparatus includes transducers for measuring the pore pressure and axial load. This apparatus
… of vibration on various soil properties conventionally determined by the triaxial test. It can …

… dimension on the measured elastic wave velocities is explored by testing the same materials
in a medium-sized triaxial apparatus having specimen size of … topic of stiffness anisotropy of …

… Institute (NGI) for triaxial testing of soils that are fully saturated … soil types are proposed.
Sources of error are mentioned. A new method to measure the initial shear modulus in triaxial soil …