Ultra-Violet (UV) Aging for Asphalt Binder under Controlled Moisture and Temperature Conditions

Mainieri, Javier J. García; Al‐Qadi, Imad L.

doi:10.1061/9780784483510.002

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…The findings show that asphalt binder properties change within pavement layers and may penetrate deep below the surface when exposed to extended-aging conditions. Similar behavior was observed elsewhere when master curves of UV-aged and PAV-aged asphalt binders were compared ( 7 ).…”

Section: Resultssupporting

confidence: 77%

“…For example, the universal simple aging test (USAT) was developed at the Western Research Institute to minimize the aging duration by reducing the binder film thickness at ambient conditions ( 6 ). TEAGE, an ultraviolet (UV) rays based aging method simulates the field aging on mixtures and binders ( 7 , 8 ). Similar methods have been developed elsewhere ( 9 – 11 ).…”

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confidence: 99%

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Impacts of Field and Laboratory Long-Term Aging on Asphalt Binders

Singhvi

Mainieri

Özer

et al. 2022

Transportation Research Record: Journal of the Transportation R

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Asphalt binder aging accelerates cracking of flexible pavement. Quantifying the extent of binder aging allows the formulation and selection of appropriate binders for flexible pavement applications. Asphalt binder aging depends on climatic exposure, asphalt concrete field-surface density, and binder chemistry. The aim of this work was to select a laboratory-aging protocol to represent realistic field aging in Illinois. Binders were extracted from field cores aged from eight to 31 years. Extracted binders were tested for rheology and chemical characteristics. Small- and large-strain rheological parameters were determined. In addition, chemical functional groups and molecular weight distribution of extracted binders were evaluated. Effects of aging across pavement depth were also investigated. Double pressure-aging vessel (PAV) was identified as a suitable laboratory long-term aging protocol to represent eight to 12 years of aging for flexible pavements in Illinois. Thresholds were proposed for selected small- and large-strain rheological parameters representing realistic field aging. These thresholds may be used for binder selection and procurement to ensure the binder’s long-term performance. Furthermore, chemical analysis on extracted binders showed that only specific carbonyl functional groups are affected by field aging.

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Section: Resultssupporting

confidence: 77%