Features of rheological properties of organic binders in the cooling process

In recent decades, there has been an active development of many sections of road materials science. This is mainly due to the changing operating conditions of highways: both natural and climatic, and technical. Additional opportunities are also opening up in connection with the introduction into widespread practice of new devices and devices for evaluating a number of indicators of road binders. At the same time, traditional bitumen testing methods continue to be improved. Thus, the assessment of the indicators of bitumen binders on a ductilometer during quality control of products supplied for storage in solid form in plywood, cardboard or plastic cubes with a capacity of about 1 m3 allowed us to draw interesting conclusions when analyzing the extensibility of traditional road binders extracted from different parts of the cube. It has been established that during the input control of bitumen raw materials, reliable indications that coincide with the passport data of the manufacturer can be obtained only in the case of complete melting and homogenization of the binder extracted from the container. Otherwise, there is a discrepancy between the parameters being checked, which is most noticeable for the ductility indicator at 25 degrees Celsius. An assumption has been made about the physico-chemical causes of the detected phenomenon based on the polymer, rather than colloidal, structure of the resulting road binders.