ПОЛИМЕР-БИТУМДЫ БАЙЛАНЫСТЫРҒЫШТАРДАҒЫ ПЛАСТИФИКАТОРДЫҢ РӨЛІ

Abstract

This article analyzes plasticizing additives used in polymer-bitumen binders (PBBs) and demonstrates their influence on the rheological, structural, and performance characteristics of the material. Modern classes of plasticizers – esters, petroleum oils, polymer additives, and bioplasticizers – are considered in terms of compatibility with the bitumen-polymer matrix, the effectiveness of their modifying action, and environmental safety. It is established that the type and dosage of plasticizer significantly determine the temperature sensitivity, phase stability, and resistance of PBBs to thermal-oxidative aging. The scientific and practical importance of developing formulations adapted to the sharply continental climate of Kazakhstan and the CIS countries, as well as the need for long-term field studies, are emphasized. The obtained conclusions substantiate the feasibility of a comprehensive assessment of operational, economic, and environmental aspects when selecting plasticizing systems and form a scientific basis for optimizing PBB composition.