caa a22 4500 477047599 CHVBK 20180405111334.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF00876490 doi (NATIONALLICENCE)springer-10.1007/BF00876490 Transport properties and microstructural characteristics of a thermally cracked mylonite [Elektronische Daten] [M. Le Ravalec, M. Darot, T. Reuschlé, Y. Guéguen] An experimental study was carried out on a granitic mylonite (La Bresse, France) to analyze the influence of pore microstructure on transport properties. Different crack networks were obtained by a controlled thermal treatment. Microstructures were analyzed by means of gas adsorption and mercury porosimetry. Transport properties have been investigated by measuring gas permeability and electrical conductivity. The dependence of permeability on confining pressure shows an exponential decrease, characteristic of a porosity made of cracks. Correlations between measured parameters have been analyzed by comparing them with relations deduced from theoretical models. Linking the formation factor to the porosity leads to a rather low tortuosity value (about 2.4), characterizing a medium with a well connected porosity. Correlation between permeabilityk and formation factorF leads to a power-law relationk ∝ F −n wheren≈2.9, which is consistent with a crack model describing the behavior of the thermally treated rock. Birkhäuser Verlag, 1996 Transport properties nationallicence pore microstructure nationallicence porosity nationallicence Le Ravalec M. Géosciences Rennes, Université Rennes I, Bâtiment 15, Campus Beaulieu, Avenue Général Leclerc, 35042, Rennes Cedex, France aut Darot M. C.N.R.S. URA 1358, Laboratoire de Physique des Matériaux, E.O.P.G.S., 5 rue René Descartes, 67084, Strasbourg Cedex, France aut Reuschlé T. C.N.R.S. URA 1358, Laboratoire de Physique des Matériaux, E.O.P.G.S., 5 rue René Descartes, 67084, Strasbourg Cedex, France aut Guéguen Y. Géosciences Rennes, Université Rennes I, Bâtiment 15, Campus Beaulieu, Avenue Général Leclerc, 35042, Rennes Cedex, France aut pure and applied geophysics Birkhäuser-Verlag 146/2(1996-03-01), 207-227 0033-4553 146:2<207 1996 146 24 https://doi.org/10.1007/BF00876490 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00876490 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Le Ravalec M. Géosciences Rennes, Université Rennes I, Bâtiment 15, Campus Beaulieu, Avenue Général Leclerc, 35042, Rennes Cedex, France aut NATIONALLICENCE 700 1- Darot M. C.N.R.S. URA 1358, Laboratoire de Physique des Matériaux, E.O.P.G.S., 5 rue René Descartes, 67084, Strasbourg Cedex, France aut NATIONALLICENCE 700 1- Reuschlé T. C.N.R.S. URA 1358, Laboratoire de Physique des Matériaux, E.O.P.G.S., 5 rue René Descartes, 67084, Strasbourg Cedex, France aut NATIONALLICENCE 700 1- Guéguen Y. Géosciences Rennes, Université Rennes I, Bâtiment 15, Campus Beaulieu, Avenue Général Leclerc, 35042, Rennes Cedex, France aut NATIONALLICENCE 773 0- pure and applied geophysics Birkhäuser-Verlag 146/2(1996-03-01), 207-227 0033-4553 146:2<207 1996 146 24 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer