Articles | Volume 6, issue 4
Nat. Hazards Earth Syst. Sci., 6, 529–539, 2006
https://doi.org/10.5194/nhess-6-529-2006

Special issue: Slope movements in weathered materials: recognition, analysis...

Nat. Hazards Earth Syst. Sci., 6, 529–539, 2006
https://doi.org/10.5194/nhess-6-529-2006

  14 Jun 2006

14 Jun 2006

Softening and instability of natural slopes in highly fissured plastic clay shales

L. Picarelli1, G. Urciuoli2, A. Mandolini1, and M. Ramondini2 L. Picarelli et al.
  • 1Dipartimento di Ingegneria Civile, Seconda Università di Napoli, Aversa, Italy
  • 2Dipartimento di Ingegneria Geotecnica, Università di Napoli Federico II, Napoli, Italy

Abstract. Softening is often considered to be the main cause of first-time slides in OC clay, but so far the mechanics of softening has not been satisfactorily explained. Bearing on laboratory data and field observations about landslides in tectonized highly plastic clay shales of Italian Apennines, the paper describes a process of soil weakening that could explain some failures of natural slopes.

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