Russian Journal of Transport Engineering
Russian journal of transport engineering

           

2018, Vol. 5, No. 1. - go to content...

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DOI: 10.15862/20SATS118 (https://doi.org/10.15862/20SATS118)

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Tyuryukhanov K.Yu., Pugin K.G. Research of the interaction of bitumen with mineral particles in asphalt concrete. Russian Journal of Transport Engineering. 2018; 5(1). Available at: https://t-s.today/PDF/20SATS118.pdf (in Russian). DOI: 10.15862/20SATS118


Research of the interaction of bitumen with mineral particles in asphalt concrete

Tyuryukhanov Kirill Yurievich
Perm national research polytechnic university, Perm, Russia
E-mail: Turuchanov.k.u@iist.ru

Pugin Konstantin Georgievich
Perm national research polytechnic university, Perm, Russia
E-mail: 123zzz@rambler.ru

Abstract. The article presents a part of the dissertation research by Tyuryukhanova K.Yu., the results of bitumen interaction with a fine mineral aggregate that is part of the asphalt-concrete mixture. At present, the Russian Federation raises the question of creating effective materials in connection with the constantly growing intensity and freight traffic of highways. Requirements for the quality of automobile coatings are increasing. During repair, new construction, reconstruction of motor roads, large volumes of natural mineral materials are used, such as crushed stone, sands from screening crushing, natural sands, mineral powder, their reserves are constantly depleted. Therefore, the urgent problem is the introduction of waste metallurgical industry, which requires a deeper and more comprehensive study of interaction with bitumen. Adhesion of the binder to mineral materials is due to a number of reasons: the geometric shape of the particles, the porosity, the dispersion. However, in general, the strength created on the surface of the particles depends on the bonds created, determined by the nature of the mineral material and the bitumen activity. As practice shows, the use of industrial wastes in the composition of asphalt concrete is possible without worsening the physicomechanical performance. The article deals with the use of the waste of the Annunciation Reinforcement Plant, a spent molding mixture obtained as a result of repeated crushing of casting molds, which include quartz sand together with Alfabond binding agent. Quartz sand is an acidic rock, which negatively affects the formation of strong chemisorption bonds. When quartz sand interacts with the hardener and the binder on the surface of grains, a stable film coating forms, which reduces the surface acidity of quartz sand and promotes the chemisorption interaction of bitumen with grains of sand, creating the necessary structure-forming effect. Chemisorption bonds of bitumen with mineral materials after boiling are visually represented in the article.

Keywords: asphalticconcrete; adhesion; spent molding mixture; chemisorption bond; bituminous capacity; mineral material; waste of industry

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