The creep curve of geosynthetic assays requires very long time, socalled conventional tests. To reduce this time can be used the SIM teste (Stepped Isothermal Method) known as accelerated test. This paper presents the results of accelerated and conventional tests to assess the creep of geotextile non-woven polyester with short fiber. Compared to the literature, the results showed less variability of the temporal range of the accelerated creep curves.