Efficiency of using shungite filler for modifying organic binder

• Published in: IOP conference series. Materials Science and Engineering 2020-10, Vol.945 (1), p.12025
• Main Authors: Yadykina, V V, Vyrodova, K S, Potapov, E E
• Format: Article
• Language: English
• Subjects: Additives; Asphalt; Composition; Concrete; Fillers; Homogeneity; Polymers
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/945/1/012025

Modification of bitumen with various additives, including polymer ones, is one of the most effective ways to regulate the performance properties of asphalt concrete. Due to the high cost of polymers, a promising area of research is to reduce the polymer content, for example, by introducing mineral filler into its composition. A wide range of properties and unique structure of fullerene-containing natural shungite allow it to be used in various branches of science, industry and technology to create a variety of materials and determine the search for new areas of its application. One of the ideas that are currently under development is the use of shungite in conjunction with an organic binder used for the production of asphalt concrete. The work is devoted to the study of the influence of fine shungite on the characteristics of polymer-bituminous binder (PBB) and asphalt concrete. It is shown that the introduction of shungite into the PBB increases its viscosity, adhesive and cohesive properties, and the homogeneity of the mixture. This is due to the unique composition, structure and properties of shungite. The positive influence of the use of polymer shungite binder on the quality of asphalt concrete was established. With the introduction of 5% shungite in the PBB composition, the strength at 20 and 50°C, the strength of water-saturated samples, and the shear stability of polymer asphalt concrete significantly increased. This made it possible to reduce the polymer content of PBB by 10%.