The effect of the short-term aging process (RTFO) on the group composition of bituminous binders containing the Polyepor-R rubber modifier and the Polyepor-RP hybrid modifier obtained by high-temperature shear grinding (HTSG) was studied using Fourier transform infrared spectroscopy. IR spectra for unmodified bitumen and polymer bitumen binder (PBB) were studied for comparative analysis. The evolution of binders due to aging was studied by estimating the change in the relative optical density for the carbonyl functional group related to various chemical compounds before and after the RTFO procedure. It was found that the antioxidants included in tire rubber, which is the main raw material for producing Polyepor modifiers, have a positive effect on the resistance of modified bituminous binders to aging.

中文翻译：

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用红外-傅立叶光谱法研究沥青粘合剂的老化过程

使用傅里叶变换红外光谱研究了短期老化过程 (RTFO) 对含有 Polyepor-R 橡胶改性剂和通过高温剪切研磨 (HTSG) 获得的 Polyepor-RP 混合改性剂的沥青粘合剂的组组成的影响. 研究了未改性沥青和聚合物沥青粘合剂 (PBB) 的红外光谱以进行比较分析。通过估计与各种化合物相关的羰基官能团在 RTFO 程序之前和之后的相对光密度变化，研究了由于老化引起的粘合剂的演变。研究发现，作为生产 Polyepor 改性剂的主要原料的轮胎橡胶中包含的抗氧化剂对改性沥青粘合剂的抗老化性能具有积极影响。