Abstract
DOI: 10.31081/1681-309X-2024-0-1-26-33 Specialty 161. U.D.C. 665.775.4 TESTING OF COUMARONE-INDENE-CARBAZOLE RESIN AND BITUMEN MODIFIED BY IT © Yu.V. Prysiazhnyi, PhD in Technical Sciences, S.V. Pyshyev, Doctor of Technical Sciences (Lviv Polytechnic National University, 12, S. Bandera Str., Lviv, 79013, Ukraine) The article shows the importance of research aimed at obtaining road bitumen modifiers from nontarget products of coal thermal processing, in particular, by further processing of high-boiling fractions that are separated from liquid coal coking products. The results obtained in this area indicate the effectiveness of using modified coumarone-indene-carbazole resins as a polymeric modifier of road oil bitumen. Laboratory tests were carried out. As starting materials, we used bitumen of BND 70/100 grade, obtained at PJSC “Ukrtatnafta”, and coumarone-indene-carbazole resin synthesized by ionic cooligomerization from a narrow coumarone-indene fraction (140-190 °C) and carbazole. The modification of road bitumen with coumarone-indene-carbazole resin was carried out to determine the quality characteristics of the resulting modified binder. By changing the mass content of coumarone-indene-carbazole resin in bitumen, several series of modification were performed. The resin consumption was set based on the consumption of industrial adhesives – 0.1 to 2.0 % by weight. The conditions for mixing the modifier with bitumen were as follows: temperature – 190 °C; duration – 60 minutes; modified Reynolds criterion – 109500. Using the modified bitumen, an asphalt mix was prepared, the corresponding asphalt concrete was produced and its quality was analysed. It was found that modification of BND 70/100 road bitumen with coumarone-indene-carbazole resin significantly improves its adhesion, while slightly deteriorating its thermoplastic properties. Coumarone-indene-carbazole resin ultimately improves the physical and mechanical properties of ASG.Dr.Sh.A.NP.I. asphalt concrete, in particular, the water saturation and compressive strength at 20 °C. Keywords: oil processing, coal processing, bitumen, modification, coumarone, indene, carbazole, resin. Corresponding author: Yu.V. Prysyazhnyi, e-mail: yurii.v.prysiazhnyi@lpnu.ua
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