The effect of joint sealing on the performance of thin whitetopping sections at MnRoad

To determine the benefits of sealing joints in whitetopping overlays, several test sections were constructed in 2004 at the Minnesota Road Research (MnROAD) facility. After more than seven years of interstate traffic and exposure to the extreme climate of Minnesota, sufficient data now exists that can answer the question of whether sealing or filling thin whitetopping joints has a significant effect on long-term whitetopping performance.