The dynamic Poisson ratio is a complex calculation parameter mainly considering the standard existing equipment in some Geotechnical laboratories. Nevertheless, this dynamic property can be easily calculated through a simple relationship – based on the theory of elasticity – between the propagation velocities of two distinct elastic waves. Despite permitting an easy calculation of the dynamic Poisson ratio, the signals arrival instant – in regard to the above referred waves – are not always identifiable on the time domain basis of interpretation (Viana da Fonseca et al. ). For the analysis of the dynamic Poisson's ratio, three types of elastic waves were taken into consideration. For soil-cement specimens – studied in this paper – were calculated the compression wave velocity VP, Bar wave velocity VL and shear wave velocity VS. Properties like the dynamic confined modulus Mdin, dynamic modulus of elasticity Edin and dynamic shear modulus Gdin were also intended. The cross comparison between the dynamic Poisson ratios computed by different waves is used to ensure the chosen arrival instances based on time domain interpretation. In this paper it is also preformed a dynamic Poisson ratio recalculation in order to evaluate the parameter sensitivity regarding the equipment resolution concluding in the possibility to estimate fair values of υdin from the presented tests.
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