Stress Dependency of Shear Wave Velocities in Diluvial Gravel Samples During Triaxial Compression Tests

Investigation of Stress-Strain Behavior of Plastic Concrete Using Monotonic Triaxial Compression Tests

In this paper, the mechanical behavior of plastic concrete being used in the cut-off walls of earth dams has been studied. To do the task, triaxial compression tests on the specimens in various ages and mix designs under different confining pressures have been done and the stress-strain behavior of such materials and their strength parameter changes has been experimentally investigated. It has ...

Evaluation and Prediction of Shear Wave Velocities

Shear wave velocities from full waveform acoustic logs were determined at DSDP Site 613 using the spectral ratio inversion method. Discrete shear wave velocities for a 350 meter interval at 0.5-2 meter depth increments were calculated. Shear wave velocities were not evaluated for the upper 130m of the log because of data recording problems. The sediments of Site 613 represent a progression from...

Effect of Cementation on the Shear Strength of Tehran Gravelly Sand Using Triaxial Tests

Determination of acoustic shear and compressional wave velocities for steel samples by impulse excitation of vibration

A standard tool to determine the dynamic Young and shear moduli for refractory materials is based on measuring the free resonance frequencies of a bar of rectangular section. This measurement can be performed either by response to an impulse, or using a periodic excitation of slowly varying frequency. One of the great advantages of this resonance technique is its simplicity: it does not require...

Determination of Shear Wave Velocities in "slow" Formations

Direct determination of formation shear wave travel time is impossible in "slow" formations where the shear wave velocity is lower than the borehole fluid (mud) velocity. However, the Stoneley waves in these formations are very sensitive to changes in formation shear wave properties and can be used to indirectly determine the formation shear velocity, In addition, the P wave packet is highly de...