ABSTRACT
Researchers and professionals have used several test methods to evaluate the dewatering performance in geotextile tubes. The evaluation of geotextile tubes is done preliminarily by small-scale Falling Head Tests (FHTs), Geotextile-tube Demonstration Tests (GDTs), and full-scale pilot tests. Nevertheless, only a few studies have compared the outcomes of various dewatering tests, and even fewer have established accurate correlations between test methodologies. This work performed a pressurized two-dimensional dewatering test (P2DT) with a woven geotextile under different hydraulic pressure configurations (with and without internal pressure). In addition, GDT tests were performed for comparison. In this study, the P2DT and GDT tests evaluated the artificial slurry with chemical accelerators. The tests showed similar dewatering rates and final filter cake solids concentration. However, the GDT tests showed better turbidity results. The results indicated that geotextile tubes are an exciting alternative for slurry dewatering.
