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Water Transmission by Various Ceramic, Cellulose, Glass, and Steel Membranes
Author(s) -
Wiegand C. L.,
Swanson W. A.
Publication year - 1966
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1966.03615995003000010039x
Subject(s) - suction , materials science , ceramic , volumetric flow rate , water flow , porosity , composite material , transmission rate , transmission (telecommunications) , environmental science , environmental engineering , meteorology , thermodynamics , electrical engineering , engineering , physics
Water transmission characteristics were determined for several steel, ceramic, cellulose, and glass porous materials having pore diameters ranging from 0.5 to 15µ and air bubbling pressures ranging from 0.1 to 2.2 bars. Flow rates ranged from 0 to 1,500 ml hr ‐1 cm ‐2 m ‐1 water suction. The flow rate through materials that transmitted water faster than 15 ml hr ‐1 cm ‐2 m ‐1 water suction decreased slightly per unit suction as suction was increased from 1 to 8 m of water. Water transmission by materials with very low flow rates (< 0.3 ml hr ‐1 cm ‐2 m ‐1 suction) increased rapidly as suction increased. The results of this study offer a good comparison of the different materials under the same test conditions and indicate that the water transmission rate may be estimated from the bubbling pressure. However, the water transmission characteristics of particular porous material specimens must be determined individually if their flow characteristics must be known precisely.