Short-Term Compressive Properties and Transmissivity of Geonets

Abstract: The relationship between the manufacturing parameters and the compressive behaviors of a traditional bi-planargeonet, the effect of various test conditions on the compression test results for bi- and tri-planar geonets, and the correlationbetween the normal pressure and the transmissivity of bi- and tri-planar geonets were investigated. The geonet strand inclina-tion can mainly affect the after-compressive strength, i.e., roll-over behavior. For both bi- and tri-planar geonets, the com-pressive strength decreased and the strain at the yield point increased gradually with temperature . A significant reduction inflow capacity was observed for the traditional bi-planar geonet, and this value was consistent with the compressive strength.These decreases were anticipated owing to the abrupt thickness decrease in the geonet caused by roll-over. On the otherhand, no significant decrease was observed in the transmissivity for the tri-planar geonet, which did not roll over. Keywords: bi-planar, tri-planar geonets, flow capacity, compressive strength, roll-over behavior, transmissivity