Bitumen-polymer compositions for asphalt concrete

• Published in: Journal of physics. Conference series 2021-08, Vol.1990 (1), p.12009
• Main Authors: Fedorova, L V, Tretyakova, Z O, Voronina, M V
• Format: Article
• Language: English
• Subjects: Asphalt; asphalt concrete; binder; bitumen; Bitumens; Melt temperature; modification; Relaxation time; Roads; Roofing; Roofing materials; Temperature dependence; thermoplastic elastomer; Thermoplastic elastomers; Time dependence; Time measurement; Transportation networks
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1990/1/012009

One of the criteria for the level of development of countries is the condition of the road network. At present, the transport and operational characteristics of the majority of domestic highways lag behind the world level. Therefore, the need to create road surfaces with increased durability is very urgent. As a result of this research bitumen modified with polymers have been investigated. Based on measurements of time-dependent viscosity parameters (melting temperature, penetration and spin-spin relaxation time T2), it was found that at a thiol content of more than 25%, a continuous phase can form, which manifests itself as a sharp change in the properties of bitumen and is associated with phase inversion. A good compatibility of thermoplastic elastomers with a bituminous binder was revealed, and the resulting modified systems have high technical characteristics The proposed method for modifying bitumen can be recommended for obtaining roofing materials.