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A review of environmental emissions from asphalt plants and paving


Asphalt is a black, thermoplastic, hydrocarbon material extracted from crude oil and
widely used in road construction all over the world. In order to meet the requirements
of construction technology, asphalt always needs to be heated to flow state in the process
of mixing and paving, during which a large amount of asphalt fume is released. Asphalt
fume is a complex mixture of inorganic compound gases, volatile organic compounds and
particulate matter, which poses a serious threat to the natural environment and the health
of practitioners.
This review presents HMA and WMA constituents and the potential health effects of
criteria and Hazardous pollutants generated from asphalt pavement construction. Hot mix
asphalt (HMA) and warm mix asphalt (WMA)are a major construction materials used
for highway roads, building roads, airport runways, parking, and other pavement repairs
in the worldwide. During HMA construction, a considerable number of volatile organic
compounds (VOCs) are generated during asphalt pavement construction, and present
negative effects on workers health.
Accurate identification, quantification and measurement of emissions during HMA and
WMA paving operations were used to identify and quantify VOCs, SVOCs, hazardous air
pollutants (HAPs) and polycyclic aromatic hydrocarbons (PAHs) in asphalt fumes during
production and paving activities


asphalt pavement hot mixed asphalt, air pollutant emissions, transportation, warm mix asphalt