Filled bituminous compositions in the construction industry

Objective. The properties of road bitumen, when interacting with the components of building compositions, are always transformed relative to their original properties. Therefore, when working with materials based on filled bitumen compositions, regardless of their field of application, the main task is to monitor the dynamics of changes in characteristics and control in the required direction, as well as maintaining properties such as viscosity, flexibility and fluidity. The purpose of the work is to study the effect of modifying additives of various bases (fillers, plasticizers and waxes) on the properties of a bituminous binder and to evaluate the effectiveness of their contribution to the formation of filled bitumen compositions for the construction industry.

Method. The methodological basis of the work is the principle of bitumen structure formation. Experimental studies were carried out using standard and special methods.

Result. The results obtained showed that fiberglass fiber proved to be the best filler in the bitumen composition. In the study of plasticizers, it was revealed that the most pronounced positive plasticizing effect is observed from the use of an extract of selective oil purification, which allows you to control the flexibility of the system in a wide range. It has been established that the plasticizer polyalkylbenzene effectively regulates the properties of the composition at negative temperatures, slightly affecting the heat resistance. The results of the wax study show that Titan synthetic wax and Viscobit polyethylene wax are evenly distributed in the volume of the bituminous binder and provide stabilization of the system properties.

Conclusion. In the process of performing the study, as well as analyzing the results obtained, 3 groups of bituminous matrix filler additives were studied. It has been established that the directed regulation of the properties of bitumen systems is possible due to the rational choice of the type of additive-filler. Thus, using complex fillings of the bitumen matrix when designing bitumen compositions with the possibility of regulating and normalizing their properties (optimization indicators), it is possible to obtain economic and operational effects.

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