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    Effect of Gamma-Irradiated Recycled Low-Density Polyethylene on the High- and Low-Temperature Properties of Bitumen
    (Hindawi Publishing Corporation, 2013) Ahmedzade, Perviz; Fainleib, Alexander; Gunay, Taylan; Starostenko, Olga; Kovalinska, Tetyana
    This paper describes polymer modification of bitumen with gamma-irradiated recycled (gamma-LDPER) low-density polyethylene. The recycled low-density polyethylene (LDPER) was obtained from greenhouse films exposed to sunlight at least one year. The surface of the LDPER was treated by gamma beamirradiation that provided formation of free radicals and some functional groups thatmay contribute to the creation of strong chemical bonds between polymer modifier and bitumen. Five different samples of bitumen/gamma-LDPER compositions with the modifier content, wt. %: 1, 3, 5, 7 and 9, were prepared. The effects of the gamma-LDPER on original and aged bitumen were investigated by means of morphological, chemical, and physical testing program, including FTIR spectroscopy, conventional tests, rotational viscosity (RV), dynamic shear rheometer (DSR), and bending beam rheometer (BBR) tests. Superior performing asphalt pavements (Superpave) specifications were used to analyze mechanical test results as well as to determine the performance grades (PG) of the binders. Optimum usage of the gamma-LDPER as modifier in bitumen were suggested after testing program. The results reveal the stiffening effect of the gamma-LDPER on bitumen that provide enhanced temperature susceptibility and also promise better performance grades (PG) with gamma-LDPER polymer modification.
  • Küçük Resim Yok
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    Effect of Gamma-Irradiated Recycled Low-Density Polyethylene on the High- and Low-Temperature Properties of Bitumen
    (Hindawi Publishing Corporation, 2013) Ahmedzade, Perviz; Fainleib, Alexander; Gunay, Taylan; Starostenko, Olga; Kovalinska, Tetyana
    This paper describes polymer modification of bitumen with gamma-irradiated recycled (gamma-LDPER) low-density polyethylene. The recycled low-density polyethylene (LDPER) was obtained from greenhouse films exposed to sunlight at least one year. The surface of the LDPER was treated by gamma beamirradiation that provided formation of free radicals and some functional groups thatmay contribute to the creation of strong chemical bonds between polymer modifier and bitumen. Five different samples of bitumen/gamma-LDPER compositions with the modifier content, wt. %: 1, 3, 5, 7 and 9, were prepared. The effects of the gamma-LDPER on original and aged bitumen were investigated by means of morphological, chemical, and physical testing program, including FTIR spectroscopy, conventional tests, rotational viscosity (RV), dynamic shear rheometer (DSR), and bending beam rheometer (BBR) tests. Superior performing asphalt pavements (Superpave) specifications were used to analyze mechanical test results as well as to determine the performance grades (PG) of the binders. Optimum usage of the gamma-LDPER as modifier in bitumen were suggested after testing program. The results reveal the stiffening effect of the gamma-LDPER on bitumen that provide enhanced temperature susceptibility and also promise better performance grades (PG) with gamma-LDPER polymer modification.
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    Modification of bitumen by electron beam irradiated recycled low density polyethylene
    (Elsevier Sci Ltd, 2014) Ahmedzade, Perviz; Fainleib, Alexander; Guenay, Taylan; Grygoryeva, Olga
    This paper describe the modification of bitumen with electron irradiated recycled low density polyethylene (e-LDPER). Electron beam irradiation was applied to recycled LDPE (LDPER) to provide formation of free radicals and some functional groups that may contribute to creation of strong chemical bonds between polymer modifier and bitumen. Five binders having different e-LDPER polymer content of 1%, 3%, 5%, 7% and 9% were prepared. The effects of the e-LDPER on bitumen were investigated by means of morphological, chemical and physical testing program, including Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) conventional tests, rolling thin film oven (RTFOT), rotational viscosity (RV), dynamic shear rheometer (DSR) tests. Based on the results, it can be noted that e-LDPER modification provides an improved fundamental rheological properties of bitumen. (C) 2014 Elsevier Ltd. All rights reserved.
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    Usage of Recycled Postconsumer Polypropylene in Bituminous Binder
    (Turkish Chamber Civil Engineers, 2016) Ahmedzade, Perviz; Fainleib, Alexander; Gunay, Taylan; Grigoryeva, Olga
    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.
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    USE OF SURFACE ACTIVATED RECYCLED HIGH DENSITY POLYETHYLENE FOR BITUMEN MODIFICATION
    (Gazi Univ, Fac Engineering Architecture, 2014) Ahmedzade, Perviz; Fainleib, Alexander; Gunay, Taylan; Kultayev, Baurzhan; Starostenko, Olga
    Gamma irradiated recycled high density polyethylene (gamma-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 gamma-HDPER additive improves high temperature performance of bitumen and binder with gamma-HDPER can be used a larger temperature range than base bitumen.