Geri Dönüştürülmüş Atık Polipropilenin Bitümlü Bağlayıcılarda Kullanılması

Öz

Atık polimerler ekonomik malzemeler olmalarına karşın karayolları gibi geniş bir uygulama alanında katkı malzemesi olarak değerlendirilmeleri durumunda, bitümlü bağlayıcılarla kimyasal etkileşime girmemekte dolayısıyla esnek üstyapı içerisinde kullanımları sınırlı hale gelmektedir.

Çalışma kapsamında, geri dönüştürülmüş polipropilen (PP_R), gamma ışıması ile radyasyona tabi tutularak polimer üzerinde yeniden kimyasal bağ oluşturabilecek serbest radikaller meydana getirilmiştir. Ağırlıkça %1, %3, %5, %7 ve %9 katkı oranlarında hazırlanan modifiye bitümler üzerinde FT-IR spektroskopisi, floresan mikroskobu, geleneksel test yöntemleri, kısa ve uzun vadeli yaşlandırma işlemleri, dönel viskozite, dinamik kayma reometresi ve kiriş eğme reometresi deneyleri yapılarak katkının bitüm içerisinde kullanımı kimyasal ve fiziksel yöntemlerle incelenmiştir. 

Anahtar Kelimeler

• Bitüm,geri dönüştürülmüş polipropilen,gamma ışıması,modifikasyon

Usage of Recycled Postconsumer Polypropylene in Bituminous Binder

Öz

Although waste polymers are economical materials, they are limited, in the case of a wide usage in highway application due to no chemical interaction between them and bituminous binders.

In this work, recycled polypropylene was exposed to gamma irradiation to form free radical on the polymer surface. Five different samples of modified bitumen were prepared with the modifier content, wt. 1, 3, 5, 7 and 9% and binders were investigated in term of chemical and physical properties by means of FT-IR spectroscopy, florescent microscope, conventional tests, short and long term aging procedures, rotational viscosity, dynamic shear and bending beam rheometer tests. 

Anahtar Kelimeler

• Bitumen,recycled polypropylene,gamma irradiation,modification

Kaynakça

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