The effects of using reprocessable material on the durability and mechanical properties of landfill leachate collection HDPE pipes

作者：Ardakani Mohammad Beheshtian^*; Ebadi Taghi; Hosseini S Majdeddin Mir Mohammad

来源：Journal of Material Cycles and Waste Management, 2017, 19(3): 1166-1176.

DOI：10.1007/s10163-016-0502-3

• Reprocessable material
• Durability
• Mechanical properties
• HDPE
• Leachate collection

This paper investigated the durability and mechanical properties of landfill leachate collection HDPE pipes which had been made of different weight percent amounts of virgin and reprocessable HDPE compounds (VC and RC). Durability is reported base on the chemical properties, obtained through oxidative induction time (OIT) and melt flow index (MFI) measurements, at the temperature of 50 A degrees C and over a period of 12 months immersion in a synthetic leachate. Mechanical properties are also described according to tensile and pressure tests which had been conducted on the pipes samples. All of the factors were examined had been affected by the addition of RC, but for the special combination the antioxidant depletion was significantly affected by the experimental aging condition and no important changes had been observed in the other pipe properties. The results from OIT tests indicate that the rate of antioxidant depletion is reduced by an increase in the weight percent amounts of RC, during the experimental aging condition. This reduction is probably attributed to the extraction of antioxidants from RC in their recovery process. Finally, although these results are related to the particular HDPE compound, antioxidant formulation and condition examined, but it can be said that the use of clean own reprocessable material for the production of landfill leachate pipes shall be permitted without limitations.

• 出版日期2017-7