technological aging

This paper discusses the main features of technological aging of bitumen, in particular, the mechanisms and transformations that accompany this process. The main laboratory methods for modeling the above processes are considered. It is described how the technical essence of the methods has changed from the first developments to the present. A number of compounds that can be used as inhibitors of technological aging, including antioxidants and plasticizers, as well as some “natural” substances that have these properties, are presented.

A significant disadvantage of shortening life of the roadway is the aging of the binder. The main factors that lead to the deterioration of the properties of oxidized oil bitumen are described in the article.It is found that considerable loss of binding properties happens even before the commissioning of the road. An artificial aging of the bitumen samples according to GOST 18180 was performed and the indexes before and after the process of 5 and 10 hours aging were compared.