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The use of recycled polyester (rPET) in construction materials offers significant benefits, including energy conservation, cost reduction, and decreased solid waste. This study compares the performance of rPET with that of virgin polyester (vPET) products. Therefore, two main testing programs including pull-out tests and creep performance tests were carried out in order to determine the interfacial properties of the geogrid-reinforced soil and time-dependent manner of the geogrids, respectively. Broadly speaking, this study showed that the performance of rPET geogrid is comparable with vPET geogrids. Pull-out tests revealed that pull-out resistance of both vPET and rPET geogrids were roughly the same and the vPET geogrid mostly had lower dilation angles in comparison with rPET. Moreover, based on the performance creep tests, it was understood that the long-term mechanical behaviour of rPET does not differ from the long-term behaviour of vPET products.

来源平台：GEOSYNTHETICS INTERNATIONAL