ENVIRONMENTAL IMPACT OF VOLATILE ORGANIC COMPOUNDS EMITTED FROM ASPHALT PAVEMENT

Abstract

Abstract Hot mix(asphalt (HMA) is a major construction material used for paving roads, airport runways, and parking lots. During HMA preparation, a massive amount of volatile organic compounds (VOCs) is emitted from the hot asphalt mixtures, creating a potential health risk to on-site workers. This thesis presents the results of a study in which air samples were collected at multiple locations and time points of several projects during HMA pavement application and were subsequently characterized for their concentrations by using gas analyzer. After testing the VOCs samples the concentration increase from 130ppb to 1843ppb. that the majority increasing of VOCs was after asphalt pavements Although the individual concentrations of the identified chemicals were found to be below various exposure limits, their collective effect on human health remains unknown and may not be ignored.