Measurement of the Contact Angle of Water on Geotextile Fibers
Henry KS, Patton S
(Received 4 October 1996; accepted 26 September 1997)

Abstract
The contact angle of water on geotextile fibers significantly influences capillary behavior. Measurements of the dynamic contact angle of tap water on geotextile fibers are reported for two geotextiles, as received from the manufacturer and after they had been treated (cleaned). There is considerable hysteresis between advancing and receding contact angles, as expected. Fibers from one geotextile have significantly lower contact angle cosines than the other, indicating that it is less wettable. The cleaning of geotextiles resulted in significant reduction in the advancing contact angles of fibers from one of the geotextiles but not the other. The heights of water capillary rise in strips of the geotextiles were also measured. Results showed that the contact angle measurements are helpful; but, information on pore sizes is also needed to predict capillary behavior.

Keywords:
capillary barrier, contact angle, fiber, geotextile, wetting

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Author Henry KS, Patton S Title Measurement of the Contact Angle of Water on Geotextile Fibers Symposium , Committee on