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(Article of periodic en Anglais - 1996)

Document title

Structure and porosity of smectitic mudrocks as affected by experimental wetting-drying cycles and freezing-thawing cycles

Authors(s) and Affiliation(s)

PARDINI G. (1) ; VIGNA GUIDI G. ; PINI R. ; REGÜÉS D. ; GALLART F. ;
(1) Istituto per la chimica del Terreno, C.N.R., Pisa, ITALIE

Abstract

The erosion rates in the Vallcebre basin (Pyrenees) are controlled predominantly by the physical weathering rate of bare regolith, i.e. mudrocks. To obtain information on the influence of thermic and moisture regimes on the weathering dynamics, laboratory experiments were carried out to investigate how freezing-thawing or wetting-drying cycles, under controlled conditions, affect structure and porosity. Data from wetting-drying cycles showed that changes in water content alone did not produce deep structural modifications. A mechanism of alteration of soil sructure during freezing-thawing cycles is proposed

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 1996, vol. 27, no3-4 [pp. 149-165]

Bibliographic references : 34 ref.

Collation : Illustration ;

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 16767

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1997.
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