Credit:
A bonding agent known as tack coat helps asphalt layers stick together, but at higher stress levels or when moisture gets between the layers cracking and potholes can result. SDSU assistant professor Rouzbeh Ghabchi, in collaboration with the South Dakota Department of Transportation, will help develop guidelines on tack coat selection and application through a two-year, $75,000 grant from the Mountain Plains Consortium plus matching funds from the SDSU Department of Civil and Environmental Engineering.