Aging peculiarities of paving bitumen, which was obtained by different ways, have been studied. Oxidized and residual bitumen produced from oils of Ukrainian deposits were used and the changes in the main characteristics of bitumen after 5 and 10 h of aging in a thin film at the temperature of 436 K have been determined and the processes occurred during the aging have been studied. Using infrared spectroscopy, the changes in the structural composition of the binder during aging have been analyzed.
In the present scientific work there is done the comparative analysis of two cast emulsion-mineral mixes (CEMM) – systems on orthophosphoric and hydrochloric acids. It was determined that application of orthophosphoric acid for preparation of bitumen emulsion on oxidized bitumen leads to the substantial improvement of cohesion strength build-up rate – in comparison with identical system on hydrochloric acid.