Mechanical Damage of Geosynthetics Used in the Base Liner System of Landfills Caused by Different Aggregates
The installation process may cause unwanted changes in the mechanical behaviour of the geosynthetics.In this work,some geosynthetics used in the base liner system of landfills(a combination of a geotextile,a geomembrane and a geosynthetic clay liner)were submitted to mechanical damage under repeated loading tests(procedure adapted from EN ISO 10722),being monitored the changes occurred in their short-term behaviour.The mechanical damage under repeated loading tests consisted in placing the geosynthetics between a flexible base(granite residual soil with a relative density of 80%)and an aggregate and submitting them to cyclic dynamic loading.The geosynthetics were damaged with a natural aggregate(gravel 14/20),a recycled ceramic aggregate and corundum(synthetic aggregate used in EN ISO 10722).The damage suffered by the geosynthetics was evaluated by monitoring changes in their tensile,tearing(only for the geomembrane)and static puncture properties.
Geosynthetics Landfills Base liner systems Mechanical damage
José Ricardo Carneiro Ana Cláudia Brás Maria de Lurdes Lopes
Construct-Geo,Faculty of Engineering,University of Porto,Rua Dr.Roberto Frias S/N,4200-465 Porto,Portugal
国际会议
The 8th International Congress on Environmental Geotechnics(第八届国际环境土工大会)
杭州
英文
692-699
2018-10-28（万方平台首次上网日期，不代表论文的发表时间）