Creep testing and data extrapolation of reinforced GCLS

摘要

Presented herein are the results of creep tests on three internally reinforced geosynthetic clay liners (GCLs) conducted for 1000 h at each increment of loading. Two of the GCLs were reinforced by needle punched and one as by stitch bonding. All three GCLs sustained loads up to 60/100 of their short-term strengths without any evidence of fiber pullout or breakage. The recorded deformations were nil at 20/100 loadings and were small, but measurable, at the higher loadings. Having the experimental data, the Kelvin-Chain model was used for extrapolation out to 1.0x10~6 h (114 years) from which isochronous time curves were plotted.