- Technical Paper by D. Leshchinsky, M. Dechasakulsom, V. Kaliakin and H. Ling CREEP AND STRESS RELAXATION OF GEOGRIDS ABSTRACT: Most research on the long-term behavior of geosynthetics has focused on creep. Very little data is available for the stress relaxation behavior of geogrids. Consideration of both creep and ...www.ce.udel.edu/~montri/publication.html