Hydraulic conductivity of clays in confined tests under low hydraulic gradients
(EN)
Στειακακης Μανωλης
(EL)
Ρεπουσκου Ευτυχια
(EL)
Γαμβρουδης Χρηστος
(EL)
Repouskou Eftychia
(EN)
Komodromos, Andreas
(EN)
Steiakakis Manolis
(EN)
Gamvroudis Christos
(EN)
Πολυτεχνείο Κρήτης
(EL)
Technical University of Crete
(EN)
Sand and kaolin compacted mixtures were tested in the laboratory to investigate the effect of applied hydraulic gradient on the hydraulic conductivity measurement. Kaolin clay was added to the samples at a percentage 15, 30, 50, 70, 85 and 100% by dry weight, and hydraulic conductivity tests were performed on specimens prepared at 2% above optimum moisture content. The tests were conducted under different hydraulic gradients, using a rigid wall pressure permeameter. A definite pattern of non-Darcy behavior was recognizable in the poorly graded samples with low plasticity and fines content less than 30%. For samples with greater amount of fines and medium plasticity, Darcy behavior was observed, without a noticeable change in the flow behavior.
(EN)
journalArticle
Hydraulic structures--Construction,hydraulic structures design and construction,hydraulic structures construction
(EN)
