Matsipura P. Intensification of the bitumen modification process with epoxy compounds

The dissertation is devoted to the intensification of the process of modification of road bitumens with rapeseed oil epoxide during initiation by physical methods and chemical compounds. The effect of chemical initiators (formic acid (FA), poly-ethylene polyamine (PEPA), adipic acid (AA) and maleic anhydride (MA)) on the properties of road bitumens modified with rapeseed oil epoxy (BERO composition) and various factors (epoxide and initiator concentrations, temperature and reaction time) on the properties of the obtained bitumens were researched. It is established that 15% of the initiator in the modifying mixture allows to increase the adhesion index by 2-3 times. It is shown that the use of initiators can reduce the modification time from 5 to 1-2 h, reduce the process temperature to 160 °C. It was found that the addition of BERO in bitumen in an amount of 1-3% of the mass. improves the performance of bitumen. In particular, the adhesion increases by 2-3 times, the softening temperature and penetration remain virtually unchanged. The physical and mechanical properties of asphalt-concrete mixtures based on bitumen modified with rapeseed oil epoxide and using the proposed initiators of the modification process were studied.