Browsing by Author "AlemTeklu"

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    SUITABLITY STUDY OF LOW DENSITY POLYETHYLENE FOR BITUMEN MODIFICATION
    (WOLKITE UNIVERSITY, 2020-06) Tensae Abera; ZeharaMunibu; SemiraHadra; BachaTaye; AlemTeklu
    The objective of this study was modification of bitumen by using low density polyethylene. This production process was carried out in wet process. There are different types of modifier. Wehave used low density Polyethylene (LDPE). And it’s commonly used for packaging, protecting and many other applications. However disposal of waste plastic bags (WPB) in large quantities constitutes an environmental problem, as they considered non-biodegradable materials. Hence, there is a real need to find useful applications for these growing quantities of wastes. In this study, Waste Plastic Bags (WPB) as one form of polymers is used to investigate the potential prospects to enhance asphalt mixture properties. After preparing raw material bitumen was heated at 85℃ and waste plastic pieces are added slowly to the hot bitumen temperature around 160℃-170℃. By using different proportion of plastic. The mixture stirred well using mechanical stirrer for about 20-30 minutes.The research investigates the properties of bitumen modified with used low density polyethylene. basic tests used as penetration, softening point, flash and fire point were carried out by using shredded waste plastic which varied from 0%to 8% by weight of80/100 penetration grade bitumen using wet mix method. As we obtain from result, as the content of plastic waste increase from 1 to 8% the rheological properties have been improved Penetration value decrease with addition of 8% plastic while increasing in softening point, flash and fire point were obtained, with the corresponding value of 61mm, 340℃ and 380℃ respectively. When the Penetration value decreases it indicates the hardness of the bitumen. And an increasing the percentage of plastic (LDPE), the marshal stability values increases till it reaches at 4 % LDPE content; then it started to decline steeply at higher LDPE content and marshal flow values are decreased due to the resistance to deformation under heavy wheal loads increase