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Laboratory investigation on fumes generated by different modified asphalt binders

机译:Laboratory investigation on fumes generated by different modified asphalt binders

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摘要

Asphalt fumes are generated during pavement construction, endangering health of surrounding people and polluting atmosphere. Fumes from 5 types of modified asphalt and base asphalt binders were studied through thermal weight loss characteristics, asphalt molecular weight distributions, and chemical compositions. The results indicated that thermal weight loss and volatile organic compounds (VOC) integrations were quadratically related. Molecular weights of 75.30% fumes were from 150 to 400, including alkanes, benzenes and polycyclic aromatic hydrocarbons (PAHs). Extra toxic emissions like PAHs, were released by crumb rubber asphalt. Budun rock asphalt, styrene-butadienestyrene modified asphalt and high-viscosity modified asphalt suppressed some components but produced additional emissions, while warm mix asphalt barely increased emissions. This study attributed that emissions of various modified asphalt binders were different, and extra toxic emissions were released with the addition of crumb rubber and other additives, supporting the subsequent research on the mechanism of asphalt fume generation and mitigation.

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  • 来源
    《Transportation research, Part D. Transport and environment》 |2023年第8期|103828.1-103828.18|共18页
  • 作者单位

    Ningxia Highway Survey and Design Institute Co., Ltd, 165 Beijing East Rd, Yinchuan 750001, China;

    Key Laboratory of Road and Traffic Engineering of the Ministry of Education, College of Transportation Engineering, Tongji University, 4800 Cao' an Rd, Shanghai 201804, China;

    School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaHebei Tonghua Highway Materials Co., Ltd, No. 416, Shengli South Street, Shijiazhuang 050020, ChinaKey Laboratory of Road and Traffic Engineering of the Ministry of Education, College of Transportation Engineering, Tongji University, 4800 Cao' an Rd, Shanghai 201804, China, Urban Mobility Institute, Tongji University, 4800 Cao' an Rd, Shanghai 201804, Key Laboratory of Road and Traffic Engineering of the Ministry of Education, College of Transportation Engineering, Tongji University, 4800 Cao' an Rd, Shanghai 201804, China, Hebei Tonghua Highway Materials Co., Ltd, No. 416, Shengli South Street, Shijia;

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  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类
  • 关键词

    Asphalt fume; Modified asphalt binders; Fume characterization; Thermogravimetric characteristic;

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