IMPROVING THE STRUCTURAL AND MECHANICAL PROPERTIES OF WARM ASPHALT CONCRETEBY THE METHOD OF POLYMER-DISPERSE REINFORCEMENT

Abstract

Statement of the problem. The problem of improving the structural and mechanical properties of warm asphalt concrete using the method of polymer-dispersed reinforcement is considered. The effect of the dosage of the RTEP-M modifier in the mineral part of the mixture on the structural and mechanical properties of warm mix asphalt (WMA) was studied. Results. By preparing a warm mix asphalt with mixing and molding samples at a temperature of 110--120 °C with the RTEP-M modifier at a ratio of 0.5; 1.0; 1.5 and 1.75 % of the mineral part and control mixtures, the effect of the modifier dosage on the structural and mechanical properties of WMA was studied. By testing the samples, the compressive strength of warm asphalt concrete at temperatures of 0.20 and 50 °C was determined, as well as the indicators of average density, water saturation and water resistance.Conclusions. The effectiveness of the application of the method of polymer-dispersed reinforcement to improve the structural and mechanical properties of warm concrete asphalt has been proven. It is shown that the addition of the RTEP-M modifier to the mineral part of the warm mix asphalt improves the strength characteristics of the asphalt concrete. It has been established that by applying the method of polymer-dispersed reinforcement, it is possible to optimize the properties of warm asphalt concrete for its use in cold or hot climatic conditions within the limits of indicators permissible according to the requirements of regulatory documents.