THE EFFECTIVENESS OF THE USE OF POLYMER MODIFIERS IN BITUMEN COMPOSITIONS

The possibility of obtaining a variety of technically valuable polymer-based materials has led to an increase in the specific consumption of polymers in the world and this indicator continues to increase. Saving and rational use of raw materials, fuel and energy and other material resources provides for an increase in the efficiency of the use of secondary material resources. It has been established that at present the problem of recycling waste polymer materials is gaining urgent importance not only from the standpoint of environmental protection, but also due to the fact that in conditions of shortage of polymer raw materials, plastic waste becomes a powerful raw material and energy resource. It has been revealed that the processing of various types of secondary polymer raw materials is not sufficiently developed and it is necessary to introduce new technologies to increase the level of its use. To achieve these goals, as well as to prevent environmental pollution by millions of tons of polymer waste, it is necessary to solve the main issues of this problem: organization of collection of industrial and consumer waste; division of polymer waste into categories to be recycled or disposed of; selection of the necessary modification methods to improve the quality of secondary polymer raw materials. Modification with various polymer additives will allow you to adjust the properties of raw materials and bitumen to obtain commercial bitumen of improved quality. The article provides an overview of bitumen modifier polymers that increase strength, water resistance, and improve the deformability of the material over the entire range of operating temperatures. The possibility of improving the physical and mechanical properties of petroleum bitumen is shown, which will allow obtaining polymer bitumen binders with improved ductility, heat resistance and low-temperature properties, as well as expand resources for the production of road bitumen.