Background Recent research focused on sources of volatile and semi-volatile organic compounds has uncovered a new source of these compounds in which they are released into the atmosphere in the forms of gas or aerosol. Various composites emit gaseous compounds considered as non-combustion sources. However, these compounds emit submicron atmospheric...

Background Asphalt aging is implicated in many distresses of materials reported in the roofing and paving industry. Among the issues brought on by excessive ultraviolet (UV) aging are increased susceptibility to thermal cracking due to excessive hardening and loss of stress relaxation capacity in aged bitumen, the binding component in roof shingles...