Interaction of the Components of the Modifying Additive in the Process of Producing a Polymeric-Bituminous Binder

To obtain polymer-bitumen binders, processes of mixing various modifiers with oil bitumen are used in order to give the binder higher quality indicators compared to the starting material.The problem of searching for compositions of modifiers providing the full range of required indicators of road binders remains relevant.Peculiarities of using modifiers based on thermoelastoplasts and thermoplastics for modifying mixed bitumen are considered.Responses were studied in the form of changes in the quality indicators of a binder when mixing bitumen with different volumes of thermoplastic elastomer and thermoplastic, in the presence or absence of surface-active substances, as well as their mixtures of various compositions.As a result of the research, a mathematical model was developed for the dependence of the characteristics of the polymer-bitumen binder on the content of the components introduced during the mixing process.