Evaluation of creep behavior of high density polyethylene and polyethylene-terephthalate geogrids

Effect of Geosynthetic Reinforcement Creep on the Long Term Performance of an Embankment

“…As suggested by many researchers, the plot of geosynthetic strain vs. log (time) can be treated as a straight line (Yeo 2010). A similar approach was followed in this paper.…”

“…As pointed out by many researchers (Zhang and Moore 1997;Perkins 2000;Voskamp and Vliet 2001;Li and Rowe 2008;Yeo 2010), creep can be a significant contributor to geosynthetic reinforcement's strains. As the effect of creep usually become evident after relatively longer period of time, in the short-term performance of a geotechnical structure, it may not play a significant role.…”

Long-term reinforcement strains for column supported embankments with viscous reinforcement by FEM

“…It is well known that geosynthetics typically made of polyethylene (PE) and polypropylene (PP) are prone to experience creep/relaxation (e.g., Bathurst and Cai, 1994;Leshchinsky et al, 1997;Jones and Clarke, 2007;Kongkitkul et al, 2007;Yeo and Hsuan, 2010;Franca and Bueno, 2011;Miyata et al, 2014). Some researchers (e.g., Rowe, 2001, 2008;Rowe and Taechakumthorn, 2011;Karim et al, 2012;Taechakumthorn and Rowe, 2012a, 2012c have demonstrated that reinforcement viscosity is of importance to the interpretation of timedependent behaviour of basally reinforced embankments without columns.…”

Centrifuge evaluation of the time-dependent behavior of geotextile-reinforced soil walls

“…Typically, evaluation of the long-term behavior of a GRS structure is based on results from creep tests conducted on geosynthetic specimens tested in isolation, without the confinement of soil. Creep tests conducted at elevated temperature have been used to accelerate the generation of time-dependent data (Zornberg et al, 2004;Bueno et al, 2005;Kongkitkul and Tatsuoka, 2007;Jones and Clarke, 2007;Yeo and Hsuan, 2010). However, the longterm deformation of actual GRS walls has been expected to be affected by the interaction between the geosynthetic reinforcement and the confining soil.…”