Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | New artificial granular materials for analogue laboratory experiments: Aluminium and siliceous microspheres |
| Abstract | Laboratory tests have been carried out to determine the physical properties of high sphericity and low density, fine grained dry granular materials. In particular, we tested hollow aluminium microspheres and hollow siliceous microspheres. Shear tests have been carried out with a Casagrande apparatus for different values of normal stress (from 12.27 to 491.8 kPa) in order to determine the frictional properties of the microspheres. Diagrams of the shear stress against displacement have been used to describe the strength of the investigated materials at different confining pressures. The shear tests show that hollow aluminium and siliceous microspheres successfully replicate the mechanical behaviour of weaker layers within natural sedimentary successions undergoing deformation. The use of these artificial granular materials in specifically designed experiments indicated that they can be successfully used for constructing more "natural" multilayers in the laboratory. © 2003 Elsevier Ltd. All rights reserved. |
| Source | Journal of structural geology 25, pp. 1893–1899 |
| Keywords | Analogue modellingArtificial granular materialCoefficient of internal frictionCohesionMechanical stratigraphy |
| Journal | Journal of structural geology |
| Editor | Pergamon,, Oxford, Regno Unito |
| Year | 2003 |
| Type | Articolo in rivista |
| DOI | 10.1016/S0191-8141(03)00041-5 |
| Authors | Rossi D.; Storti F. |
| Text | 424569 2003 10.1016/S0191 8141 03 00041 5 Scopus 2 s2.0 0043285183 Analogue modellingArtificial granular materialCoefficient of internal frictionCohesionMechanical stratigraphy New artificial granular materials for analogue laboratory experiments Aluminium and siliceous microspheres Rossi D.; Storti F. Dipartimento di Scienze della Terra, Universita di Roma La Sapienza, P.le A. Moro 5, Rome 00185, , Italy; Dipartimento di Scienze Geologiche, Universita di Roma Tre, Largo S. L. Murialdo 1, Rome 00146, , Italy Laboratory tests have been carried out to determine the physical properties of high sphericity and low density, fine grained dry granular materials. In particular, we tested hollow aluminium microspheres and hollow siliceous microspheres. Shear tests have been carried out with a Casagrande apparatus for different values of normal stress from 12.27 to 491.8 kPa in order to determine the frictional properties of the microspheres. Diagrams of the shear stress against displacement have been used to describe the strength of the investigated materials at different confining pressures. The shear tests show that hollow aluminium and siliceous microspheres successfully replicate the mechanical behaviour of weaker layers within natural sedimentary successions undergoing deformation. The use of these artificial granular materials in specifically designed experiments indicated that they can be successfully used for constructing more natural multilayers in the laboratory. © 2003 Elsevier Ltd. All rights reserved. 25 Published version http //www.scopus.com/record/display.url eid=2 s2.0 0043285183 origin=inward Articolo in rivista Pergamon, 0191 8141 Journal of structural geology Journal of structural geology J. struct. geol. Journal of structural geology. david rossi ROSSI DAVID |