چکیده مقاله
The effect of freeze thaw cycles on the hydraulic conductivity HC of compacted clay liner CCL and geosynthetic clay liners GCLs in water retaining structures and municipal solid waste landfills is a key issue in designing barrier systems in those structures In this study the effect of freeze thaw cycles on the hydraulic conductivity of a compacted clayey soil from Nazlou Region of Urmia City and a geosynthetic clay liner; and the effect of effective stress on the hydraulic conductivity change of clayey soil in freeze thaw cycles was investigated The flexible wall triaxial hydraulic conductivity apparatus was used to measure the HC of specimens subjected to freeze thaw During the freezing process ice lenses grow in soil sample and when the ice lenses melt, a network of cracks is left and thus the HC increases Increasing the effective stress reduces the increased hydraulic conductivity due to freeze thaw The results show that on the contrary to compacted clayey soil, the application of freeze thaw cycles do not significantly affect the HC of GCL even when GCL sample is subjected to extreme climatic conditions during which it continues to exhibit good performance as a hydraulic barrier
کلیدواژهها
نویسندگان
K. Badv
Associate Professor
M. Gholikhani
K. Badv Associate Professor
شیوه ارجاع
Badv, K. and Gholikhani, M.,1391,Effect of Freeze-Thaw Cycles on the Hydraulic Conductivity of a Compacted Clayey Soil from Nazlou Region of Urmia City, Iran, and on a Geosynthetic Clay Liner,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
مجموعه مقالات نهمین کنگره بین الملی مهندسی عمران19 اردیبهشت 1391 · اصفهان