(Article of periodic en Anglais - 2013)

Document title

Particular features of the physical and mechanical characteristics of certain Phlegraean pyroclastic soils

Authors(s) and Affiliation(s)

ESPOSITO L. (1) ; ESPOSITO A.W. (1) ; PASCULLI A. (2) ; SCIARRA N. (2) ;
(1) Dep. of Earth Sciences, Univ. degli Studi di Napoli "Federico II", Napoli, ITALIE
(2) Dep. of Engineering and Geo-Technology, Univ. of Chieti-Pescara, Chieti, ITALIE


This paper deals with the mechanical properties of a number of pyroclastic soils derived from volcanic eruptions (pozzolan and pumice) in the Campanian region of central Italy. The behavior of this kind of material is somewhat peculiar and indicates that pozzolan can be considered as an intermediate soil with technical characteristics between granular and cohesive soils. Pumice, one component of pozzolan, undergoes the process of grain crushing even at low stress levels, which influences the shear strength of this material. In addition, some surprising findings have emerged from the experimental results, such as the tendency of the pozzolan to swell in the absence of the pumice, high compressibility and high shear strength, high porosity beside low hydraulic conductivity, high values of the angle of friction of pumice, at constant volume, for both the "mixed grain size" and for each granulometric class fraction.


Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 104 [pp. 186-194]

Bibliographic references : 44 ref.

Collation : 19 fig., 4 tabl.



INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.11.009

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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