Long-Term Aging of Recycled Asphalt Pavements: The Influence of Meteorological Conditions on Bitumen Properties Over 16 Years
Journal Title: Journal of Civil and Hydraulic Engineering - Year 2024, Vol 2, Issue 4
Abstract
The reuse of Reclaimed Asphalt Pavement (RAP) in road construction has become increasingly prevalent due to its potential environmental and economic benefits. The aging characteristics of RAP, particularly the degradation of its bitumen content, are critical for evaluating its suitability for future applications. The aging process is influenced by various meteorological factors, including solar radiation, temperature fluctuations, and precipitation. This study investigates the impact of these factors on the properties of bitumen in RAP, focusing on a pavement constructed between 2002 and 2005. After eight years of service, the pavement was milled and the material was stored in a stockpile for an additional eight years. The bitumen properties, specifically penetration and softening point, were measured at regular intervals over the 16-year period. Cumulative meteorological data, including temperature, solar radiation, and precipitation, were recorded and analysed in relation to the observed aging effects on the bitumen. The results demonstrated a linear correlation between the cumulative meteorological conditions and the degree of bitumen aging. Increased exposure to solar radiation and temperature fluctuations accelerated the aging process, while prolonged periods of precipitation appeared to have a moderating effect. These findings suggest that both the duration and intensity of exposure to specific environmental conditions must be considered when assessing the viability of using RAP in future pavement construction.
Authors and Affiliations
Serdal Terzi, Mehmet Saltan, Sebnem Karahancer, Gulay Malkoc, Tansel Divrik, Fatih Ergezer, Ekinhan Eriskin, Kemal Muhammet Erten
Keywords
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- EP ID EP752505
- DOI https://doi.org/10.56578/jche020405
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