Investigation of resistance of modified bitumines to technological aging

Abstract

A comparison of the ability of modifiers of different classes to slow down the aging processes occurring in petroleum bitumen during pavement operation is presented in the article. Oxidized and residual road bitumens were used as research objects. Determination of resistance to hardening under the influence of heat and air was performed by the RTFOT method. Samples of oxidized bitumen with the addition of petroleum polymer resins with hydroxyl functional groups and heavy pyrolysis resin were found to have the best resistance, while for residual bitumen the highest resistance was observed with the introduction of heavy pyrolysis resin and sulfur.

Investigation of resistance of modified bitumines to technological aging

“…Визначення опору до твердіння під впливом теплоти та повітря здійснено за методом RTFOT згідно із [9][10][11].…”

Influence of Potassium Humate on the Technological Aging Processes of Oxidized Petroleum Bitumen

“…13,20 The experimental results demonstrated a positive effect on the slowing down of bitumen aging processes, which gives a boost to the study of other natural compounds as aging inhibitors for petroleum bitumen. 21,22 From this point of view, the class of compounds to which humic substances belong is of great interest. As it is known today, humic substances are a complex mixture of natural organic compounds formed during the biochemical decomposition of dead plants and their subsequent humification.…”