Chemical fingerprinting of volatile organic compounds from asphalt binder for quantitative detection

Journal article (2023)

Authors

Xi Wen Chang Wuhan University of Technology
Yongshuang Long Wuhan University of Technology
C. Wang Pavement Engineering - CEG
Yue Xiao Wuhan University of Technology
Research Group
Pavement Engineering (CEG) (TU Delft)
Copyright: © 2023 Xiwen Chang, Yongshuang Long, C. Wang, Yue Xiao
DOI
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https://doi.org/10.1016/j.conbuildmat.2023.130766
Quantitative analysis Asphalt VOCs Fingerprint components Release characteristic VOCs dependency
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Published Date

2023

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Pavement Engineering

Abstract

Asphalt material is an irreplaceable material in road construction. However, it releases VOCs (Volatile Organic Compounds), which do cause pollution to the surrounding environment, during its full life cycle, especially in high-temperature paving stage and summer service time. Asphalt VOCs release mechanism and effective emission reduction technologies are therefore urgently needed. The chemical analysis of VOCs from asphalt binder always invariably excludes a vast number of compounds of unknown relevance, making the quantitative analysis lower data accuracy. In order to address this problem, fingerprint database was developed and introduced in this study, with the detected VOCs data from 104 kinds of asphalt binders. The analysis parameters, including fingerprint components and calibration curves were optimized through quantitative study. With the help of a self-developed fingerprint database, the calculation formulas of single VOC and total released VOCs were established for quantitative analysis of VOCs from asphalt binder. In addition, the influencing mechanism of heating temperature and asphalt types on VOCs volatilization characteristic were explored to achieve emission reduction in asphalt industry.