Structural and Mechanical Properties of Modified Hot and Warm Mix Asphalt Concrete

Abstract

Statement of the problem. The problem of improving the structural and mechanical properties of hot and warm mix asphalt concrete based on mineral materials, produced by Ltd. «PavlovskNerud», Voronezh region, is considered, using the method of polymer-dispersed reinforcement. The effect of the modifier RTEP-M on the resistance of rutting for hot and warm mix asphalt concrete has been studied. Results. By studying hot and warm mixes asphalt with RTEP-M modifier in the amount of 0.3 and 0.6 % by weight in the mineral part, respectively, and the control composition, a significant improvement in structural and mechanical properties was achieved. It is shown that it is possible to increase the resistance of rutting for hot and warm asphalt concrete prepared on local road construction materials by increasing its viscous-elastic properties by using the method of dispersed reinforcement using the Russian additive RTEP-M. Conclusions. The efficiency of using the method of polymer-dispersed reinforcement to improve the structural and mechanical properties of hot and warm asphalt concrete based on local mineral materials has been proven. It is shown that the addition of the RTEP-M modifier to the mineral part of hot and warm asphalt concrete mix in the amount of 0.3 and 0.6 % by weight, respectively, improves the rutting resistance of the road surface. It has been proved that by applying the method of polymer-dispersed reinforcement, it is possible to optimize the properties of warm asphalt concrete for its use in hot climatic conditions for the introduction of warm technologies instead of hot ones in the construction and repair of road surfaces.