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- W223478315 abstract "This paper presents some results of MFI and OIT tests performed on HDPE geomembranes of 0,8 and 2,5 mm that were exposed to weathering effects and leachate after 30 months (2,5 years). The aim of this work is the evaluation of the oxidative degradation process by comparison of fresh and exposed samples results. The expositing and tests were performed according the following standards recommendations: ASTM D1435 (weathering), ASTM D5747 e D5322 (leachate), ASTM D1238 (MFI) e D3895 (OIT). The results shows, for instance, that the MFI values presented high increases on the HDPE (2.5 mm) showing that polymeric chain break occurred for both exposures and, therefore, oxidative degradation. Concerning the OIT values all the geomembranes presented very low values even in the fresh samples. This demonstrates that there wasn’t an antioxidant package appropriate for these membranes." @default.
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- W223478315 date "2010-01-01" @default.
- W223478315 modified "2023-09-23" @default.
- W223478315 title "Degradação de geomembranas de polietileno de alta densidade (HDPE) após exposição à intempérie e lixívia" @default.
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