In support of the initiatives for implementing the new MechanisticEmpirical Pavement Design Guide (MEPDG) in Iowa, a preliminary sensitivity study was undertaken to assess the comparative effect of design input parameters pertaining to material properties, traffic and climate on performance of two existing flexible pavements in Iowa with relatively thick Asphalt Concrete (AC) layers. A total of...

Assessing the life cycle economic and environmental impacts of road pavements is critical for achieving long-term sustainability in transport systems. Life cost analysis (LCCA) assessment (LCA) methods have been widely applied to pavements, however, there still a need identify which approaches boost both benefits, simultaneously. This study develops an integrated LCCA-LCA method, identifies mer...

Leaking underground storage tanks (USTs) containing gasoline represent a significant public health hazard. Virtually undetectable to the UST owner, gasoline leaks can contaminate groundwater supplies. In order to develop remediation plans one must know the extent of gasoline contamination. Centrifugal simulations showed that in silty and sandy soils gasoline moved due to the physical process of...