Investigation of the Effect of Adhesive Additive on the Plasticity of Road Bitumen and Physical-Mechanical Properties of the Road Concrete Mix
I. I. MUKHAMATDINOV, P. S. FAKHRETDINOV, A. F. KEMALOV, R. E. MUKHAMATDINOVA
Institute of Geology and Petroleum Technologies, Kazan Federal University, Kazan, Russia
Keywords: adhesive additive, modified bitumen, asphalt mix, plasticity interval, physicochemical properties
Pages: 86-97
Abstract
The current level of traffic development is characterized by a continuous increase in the intensity of cargo transport vehicles and a rise of dynamic load on road coatings. Improvement of the quality of road bitumen through the search for novel technical and technological solutions remains an urgent problem for achieving high physical-mechanical characteristics of asphaltic concrete pavements and for ensuring their long lifetime. The effect of a cation-active adhesive additive on the range of plasticity of oxidized and non-oxidized bitumen is considered. The physical and mechanical properties of asphalt-concrete mix prepared on the basis of bitumen modified with the additive in different concentrations are investigated. A technology is developed for obtaining a modified bitumen binder involving the adhesive additive. On the basis of BND 60/90 grade bitumen, an experimental lot (40 t) of bitumen modified with the designed additive was manufactured, the test region of the roadway with the total area of 7900 m2 was paved in Naberezhnye Chelny (Tatarstan, Russia), construction design supervision of the state of the test road region was performed.
DOI: 10.15372/CSD2021281
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