Impact tests of stones on a geotextile have been performed. The geotextile was mounted on a concrete cylinder of 0.8 m diameter filled with dry sand with a constant porosity. Tests were performed on woven and non-woven geotextiles and on composites. Drop tests were performed with concrete blocks of different shapes weighing all around 40 kg. The falling heights varied between 0.5 to 5.5 m.
Results show that the shape of the stone has a decisive influence. Furthermore, it appeared by PIV (Particle Image Velocimetry) that the loading on a woven is rather different from the loading on a non-woven. While a woven is loaded in the directions parallel to the yarns, the non-woven is loaded more uniformly. A remarkable result was found for composite material consisting of a woven and a non-woven. The lowest geotextile was always the first one that was damaged. A possible explanation is presented in the paper.
Menu