000			a
999			_c20602 _d20602
003			OSt
005			20240117123228.0
008			240117b xxu||||| |||| 00| 0 eng d
040			_aAIKTC-KRRC _cAIKTC-KRRC
100			_922791 _aMafessoli, Maiki
245			_aResponse of artificially cemented iron ore tailings for dry stacking disposal over a wide range of stresses
250			_aVol.53(4), Aug
260			_aUSA _bSpringer _c2023
300			_a904-915p.
520			_aThe drawbacks associated to the conventional tailings slurry disposal in dams can be managed by stacking filtered tailings in piles. In this regard, the addition of small amounts of cement into the tailings preceding the stacking may strengthen the engineering properties of the material, permitting the construction of higher and more inclined mounts of dry tailings. Accordingly, the present study assesses the behavior of compacted iron ore tailings–cement blends for dry stacking purposes. Initially, small strain stiffness and the unconfined compressive strength tests have been carried out considering 15 combinations of dry densities and cement contents. Then, conventional drained and undrained triaxial tests were carried over a wide range of confining pressures (50–1600 kPa) considering a representative dosage. Likewise, complementary triaxial tests were performed on the natural (untreated) tailings. The initial strength and stiffness results have been successfully correlated to the adjusted porosity/cement index, whereas the triaxial testing data have shown that the addition of even a small amount of cement has completely altered the tailings response from purely frictional to cohesive frictional with a negligible change in the peak friction angle. As well, a parallel between the unconfined compression results and the triaxial testing data was established.
650		0	_94690 _aConstruction Engineering and Management (CEM)
700			_922792 _aMarques, Sérgio Filipe Veloso
773	0		_dSwitzerland Springer _tIndian geotechnical journal _x 0971-9555
856			_uhttps://link.springer.com/article/10.1007/s40098-023-00711-w _yClick here
942			_2ddc _cAR