Airborne Emissions Assessment of Hot Asphalt Mixing : Methods and limitations

Agnès Jullien (1) , Vincent Gaudefroy (2) , Anne Ventura (1) , Chantal de La Roche (2) , Régis Paranhos (3) , Pierre Moneron (1)

1 LCPC/DDGC - Division Démarches durables en Génie civil
2 LCPC/SMIT - Division Structures et Matériaux pour les Infrastructures de Transport
3 University of Rio Grande do Sul State

Hot mix asphalt industries are required to meet airborne emissions thresholds, yet only a few types of emission measurements are available. This study is therefore aimed at evaluating the influence of operating parameters on airborne emissions at the plant stack, especially Gaseous Organic Compounds (GOC), in addition to identifying both the best mixing conditions and bitumen influence through laboratory testing. Emission measurements have been performed for a given set of production conditions, and results highlight significant changes in emission flows. COz, S02' NOx and GOC all seem to be correlated with combustion intensity and energy consumption, whereas CO tends instead to be associated with combustion efficiency. Laboratory GOC variations exhibit monotonic increases with temperature ; at the plant level, these effects are concealed by combustion scatlering due to burner adjustment. Flow assessment is provided at the plant for each pollutant along with its dispersion.

Mots clés: POLLUTION ATMOSPHERIQUE; FUMEE; ENROBE A CHAUD

Domaines: Matériaux; Biodiversité et Ecologie

Agnès Jullien, Vincent Gaudefroy, Anne Ventura, Chantal de La Roche, Régis Paranhos, et al.. Airborne Emissions Assessment of Hot Asphalt Mixing : Methods and limitations. Road Materials and Pavement Design, 2010, 11 (1), pp 149-169. ⟨10.3166/rmpd.11.149-169⟩. ⟨hal-00594046⟩