Durability Evaluation of Geomembrane Liners Using an Indoor Accelerated Exposure Experiment and an Outdoor Exposure Experiment for 10 years: Effects on Durability of the Protective Covering

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An indoor accelerated exposure experiment and an actual exposure experiment were undertaken to assess durability of geomembrane liners. This study specifically examined mechanical properties and surface profile changes.<BR>Mechanical properties declined little by little concomitant with the progress of the exposure time. Cracks were observed in the indoor accelerated exposure experiment on the surface of all evaluated geomembrane liners before 5000 h.<BR>Nevertheless, changes in mechanical properties of geomembrane liners in an exposure experiment for 10 years were slight. Similar cracks to those of indoor accelerated exposure experiments were observed on the surfaces of some geomembrane liners, but the geomembrane liners' durability was determined to be more than sufficient.<BR>An indoor accelerated exposure experiment, conducted for slightly more than 2000 h, was inferred to be equivalent to 10 years of an actual exposure experiment. Its results were used for comparison, which confirmed that the durability of geomembrane liners was improved greatly by the protective covering. It shielded the geomembrane from ultraviolet rays, which are a main cause of deterioration.
一般社団法人廃棄物資源循環学会の論文