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YÜZEY AKTİVASYONLU GERİ DÖNÜŞTÜRÜLMÜŞ YÜKSEK YOĞUNLUKLU POLİETİLENİN BİTÜM MODİFİKASYONUNDA KULLANILMASI

USE OF SURFACE ACTIVATED RECYCLED HIGH DENSITY POLYETHYLENE FOR BITUMEN MODIFICATION

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Abstract (2. Language): 
Gamma irradiated recycled high density polyethylene (-HDPER) was investigated as a modifier in bitumen by means of the physical and chemical tests. Recycled high density polyethylene (HDPER) was exposed to gamma irradiation to form free radicals on the waste polymer that could provide a chemical bonding. The forming of new free radicals on polymers was observed by using Fourier transform infrared spectroscopy (FT-IR). The textures of the binders were obtained by means of florescent microscopy. Subsequently, in this study, physical test methods, roll thin film oven (RTFO), pressure aging vessel (PAV), rotational viscosity (RV), dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests were conducted on base and modified bitumens. The study shows that -HDPER additive improves high temperature performance of bitumen and binder with - HDPER can be used a larger temperature range than base bitumen.
Abstract (Original Language): 
Çalışmada, gamma ışımasına tabi tutulmuş geri dönüştürülmüş yüksek yoğunluklu polietilen polimerin (- HDPER) bitüm içerisinde katkı malzemesi olarak kullanılabilirliği kimyasal ve fiziksel deney yöntemler ile incelenmiştir. Geri dönüştürülmüş yüksek yoğunluklu polietilen malzeme (HDPER), gamma ışıması ile radyasyona tabi tutularak polimer üzerinde yeniden kimyasal bağ oluşturabilecek serbest radikaller meydana getirilmiştir. Bu değişim, Fourier dönüşüm kızılötesi spektroskopisi (FT-IR) ile gözlemlenmiştir. Floresan mikroskobu ile bağlayıcıların yüzey görüntülerinin elde edilmesinin ardından, çalışma kapsamında, bağlayıcılar üzerinde geleneksel test yöntemleri, dönel ince film haline ısıtma etüvü (RTFO), basınçlı yaşlandırma kabı (PAV) dönel viskozite (RV), dinamik kayma reometresi (DSR), kiriş eğme reometresi (BBR) deneyleri gerçekleştirilmiştir. Çalışma sonucunda, -HDPER katkısının, bitümün yüksek sıcaklık performansı arttırdığı ve bu sayede -HDPER katkılı bağlayıcının orijinal bitüme göre daha geniş bir sıcaklık kullanım aralığına sahip olduğu ortaya konmuştur.
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