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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comparison of the n-Alkanes and Polycyclic Aromatic Hydrocarbons Concentrations in the Atmosphere during the Preparation of Warm and Hot Mixtures Asphalt for Pavements

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Motta, Rosangela [1] ; Vasconcellos, Perola C. [2] ; Bernucci, Liedi [1] ; Avila, Simone G. [2] ; Cornetti, Talita [1]
Total Authors: 5
[1] Univ Sao Paulo, Escola Politecn, Dept Engn Transportes, BR-05508070 Sao Paulo - Brazil
[2] Univ Sao Paulo, Inst Quim, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 23, n. 8, p. 1501-1505, AUG 2012.
Web of Science Citations: 4

Asphalt binder is used in the production of hot mixes asphalt (HMA) for paving and, due to the high temperatures used, generates fumes thatcontainn-alkanes and polycyclic aromatic hydrocarbons (PAH). Asphalt mixes prepared at lower temperatures, such as warm mixes asphalt (WMA), may contribute to reduce the emissions of those compounds and save energy. This paper investigatesn-alkanes and PAH in the total suspended particles during the preparation of WMA, in comparison with HMA, in laboratory. The results showed that the n-alkanes of the WMA and HMA presented C-max at n-C-26 and n-C-28, respectively; also, the total content of n-alkanes was higher for the HMA than forthe WMA. Besides, benzo{[}b]fluoranthene and benzo{[}a]anthracene were the major PAH in the WMA, while the higher temperatures of the HMA were observed to volatilize all larger PAH, demonstrating higher potential of inhalation exposure. (AU)

FAPESP's process: 06/51476-1 - Organic compounds indicators of natural and anthropic emissions
Grantee:Pérola de Castro Vasconcellos
Support type: Regular Research Grants