Primary Causes of Aging of Bitumen Used in Asphalt Concrete and Methods of Rejuvenation

Beka Khetsuriani; Otar Abashidze

doi:10.52340/building.2026.73.01.15

ავტორები

Beka Khetsuriani Georgian Technical University
Otar Abashidze Georgian Technical University

DOI:

https://doi.org/10.52340/building.2026.73.01.15

საკვანძო სიტყვები:

Bitumen, fatigue, aging, polymer modification

ანოტაცია

This article presents the causes of aging of bitumen used in asphalt concrete mixtures and methods for improving bitumen performance characteristics. The materials used in the study are presented and described. The work contributes to extending the service life of bitumen, which represents a future economic benefit for infrastructure projects.

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წყაროები

1. EN 12607-1: Bitumen and bituminous binders - Determination of the resistance to hardening under influence of heat and air - Part 1: RTFOT method.

2. EN 14769: Bitumen and bituminous binders - Accelerated long-term ageing conditioning by a Pressure Ageing Vessel (PAV).

3. ASTM D2872: Standard Test Method for Effect of Heat and Air on a Moving Film of Asphalt (Rolling Thin-Film Oven Test).

4. ASTM D6521: Standard Practice for Accelerated Aging of Asphalt Binder Using a Pressure Aging Vessel (PAV).

5. Hunter, R. N., Self, A., & Read, J. (2015). The Shell Bitumen Handbook. ICE Publishing.

6. Airey, G. D. (2003). State of the art report on microstructural analysis of bitumen ageing. Bitumen and bituminous binders.

7. Petersen, J. C. (2009). A review of the fundamentals of asphalt oxidation as it relates to performance-related properties and model development. Asphalt Paving Technology.