1.1 This test method covers the determination of the hy-draulic conductivity, or the permeability relative to water, ofany porous medium in the laboratory, in particular, the hydrau-lic conductivity for water in subsurface materials, for example,soil, sediment, rock, concrete, and ceramic, either natural orartificial, especially in relatively impermeable materials ormaterials under highly unsaturated conditions. This testmethod covers determination of these properties using anyform ofsteady-state centrifugation (SSC) in which fluid can beapplied to a specimen with a constant flux or steady flowduring centrifugation of the specimen. This test method onlymeasures advective flow on core specimens in the laboratory.
