Jason Weiss, Dwayne Harris, Yaghoob Farnam, Robert Spragg, Paul Imbrock
Concrete pavements, Deterioration, Electrical resistivity, Ground penetrating radar, Moisture content, Pavement distress, Pavement joints, Portland cement concrete
INDOT (as well as several surrounding states) have observed that certain concrete pavements may show a susceptibility to joint deterioration. Unfortunately, by the time that this joint deterioration is observed it is often too late and costly partial depth repairs are needed. The deterioration is generally occurring in the joint behind the backer rod and joint sealant; as such, it is difficult to detect even if one is standing directly above the joint. This project investigated the use of electrical resistivity and ground penetrating radar as two techniques to detect premature joint deterioration. The thought process was that if the joint deterioration is determined at an early stage, low cost corrective actions can be taken to extend the life of the concrete.