Prevention of Early Pavement Deterioration: Fid-Bau Portal

Prevention of Early Pavement Deterioration

D. I. Anderson / D. E. Peterson / M. L. Wiley

This study was done to identify the major forms and causes of early pavement distress, and to recommend changes in specifications or policies to prevent the distress. Three major forms of distress in Utah were identified as follows: (1) Unstable mixes, (2) Transverse cracking and (3) Stripping. The VESYS IIM rutting model was found adequate in predicting dangerous levels of rutting and shoving of flexible pavements. Higher values of temperature susceptibility, and saturates content in the asphalt binder were found to be related to greater levels of transverse cracking. Use of the COLD program is promising in reducing temperature-associated cracking. Asphalt-aggregate interactions were found to be related to both unstable mixes and stripping. The analysis of more anti-stripping agents along with hydrated lime was recommended for possible use in reducing stripping. It was determined that changes in the marshall mix design method are needed to better represent conditions in the Dryer Drum mixer. A major factor resulting in early pavement deterioration is poor quality control on some highways leading to the pavement not meeting present specifications.