This paper reports results of some creep tests conducted on two types ot nonwoven geotextile through a
newly designed laboratory apparatus. A special feature of the apparatus is that the tested specimen. is under various
-degrees of confmement during the creep test. The interface friction force between the included geotextile specimen and
confming soil can be measured separately from the extension force in the geotextile, thus excluding the influence of
friction from data analysis ·og geotextile creep behavior. To gain strain under varying situations, appropriate formulations
are constructed based on mathematics and mechanics theory applicable. Phenomonological and rheological models are
used to predict the relations between strain and time under different vertical compression and creep force acting on the
geotextile.
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