000			a
999			_c8599 _d8599
003			OSt
005			20190320150428.0
008			190320b xxu||||| |||| 00| 0 eng d
040			_aAIKTC-KRRC _cAIKTC-KRRC
100			_98178 _aShiv Shankar Kumar
245			_aHigh strain dynamic properties of perfectly dry and satureated cohesionless soil
250			_aVol. 48(3), September
260			_aNew York _bSpringer _c2018
300			_a549-557p.
520			_aBehaviors of sandy soils under dry and saturated conditions significantly differ from each other, especially under cyclic loading conditions. This paper highlights the behavior of dry and saturated Brahmaputra sand (DBS and SBS) subjected to constant strain monotonic and cyclic triaxial tests. Monotonic tests were conducted on specimens prepared at 60% relative density at a constant deformation rate 1.2 mm/min and varying confining pressures (50, 100, and 150 kPa), while the cyclic tests were conducted with varying cyclic shear strain amplitudes (0.015–7%). Monotonic tests reveal a phase transformation for SBS from contractive to dilative, while DBS shows an ever dilative response. An progressive asymmetric hysteresis behavior was observed under higher cyclic strains, based on which a modified methodology is developed to evaluate the dynamic properties of soil. Beyond 1% shear strain, damping ratio for dry sand was found to follow an asymptotic trend, while the saturated sand exhibited a significant reduction in magnitude. Comparison of the present findings with the standard dynamic models exhibits the importance of conducting site-specific dynamic soil characterization.
650		0	_94621 _aCivil Engineering
700			_98179 _a Murali Krishna A.
700			_98180 _a Dey, Arindam
773	0		_tIndian geotechnical journal _x 0971-9555 _dSwitzerland Springer
856			_uhttps://link.springer.com/article/10.1007/s40098-017-0255-5 _yClick here
942			_2ddc _cAR