Investigation of Adhesion and Stripping Properties of Asphalt Modified with Bio-oil

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Firat University Journal of Experimental and Computational Engineering
Cilt: 4 Sayı: 2
Investigation of Adhesion and Stripping Properties of Asphalt Modified with Bio-oil

Investigation of Adhesion and Stripping Properties of Asphalt Modified with Bio-oil

Authors : Öznur Karadağ, Mehmet Saltan

Pages : 262-275

Doi:10.62520/fujece.1555398

View : 48 | Download : 27

Publication Date : 2025-06-26

Article Type : Research Paper

Abstract :Plastic materials are widely used due to their low cost and ease of transportation. As a result, plastic waste is continuously increasing in the environment. Especially, waste plastic materials such as polyethylene, polypropylene, polystyrene, polyethylene terephthalate and nylon used in packaging processes increased during COVID-19 pandemic. Methods such as storage, burning and burying are used to recycle or reuse these waste plastic materials. However, the pyrolysis method is preferred in order to both recycle waste plastic materials and reduce environmental pollution. In this study, bio-oil was obtained by burning waste recycled polypropylene in granular form for 45 minutes at 500˚C in an oxygen-free environment with the pyrolysis method. Bio-oil at 1, 2 and 3% ratios and 50/70 asphalt were homogeneously modified for 30 minutes, at 3000 rpm and 160˚C with the help of temperature-controlled mixer. Vialit, Nicholson and California Stripping tests were carried out to evaluate adhesion of loose asphalt mixtures containing 50/70 asphalt and modified asphalt under influence of water and humidity. According to the results of the vialit test, as ratio of bio-oil, added to 50/70 asphalt increased, modified asphalt showed better bonding performance with aggregates. In Nicholson stripping test, asphalt modified with bio-oil at ratio of 1% showed better resistance to moisture susceptibility, while in California stripping test, asphalt modified with bio-oil at different ratios showed less resistance to temperature and rainwater movement, simulated in laboratory conditions. The experimental results were analyzed using statistical methods
Keywords : Biyo-yağ, Piroliz yöntemi, Asfalt modifikasyonu, Gevşek asfalt karışım yapışma ve soyulma testleri

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