PREDICTION OF THE FORMATION OF REFLECTED CRACKS ON ASPHALT PAVEMENT APPLIED DURING THE REPAIR OF RIGID PAVEMENT

Abstract

The article is devoted to the search of predicting methods for reflected cracks appearance on rigid pavement asphalt pavement overlays. According to the decree of the Russian Federation Government, the turnaround time for flexible pavement was increased from 12 to 24 years, for rigid pavement the turnaround time remained the same. However, on some roads, including the P-22 (M6) "Caspian", there are cement concrete pavements covered with layers of asphalt pavement, the joint operation of these materials under traffic loads is fraught with a number of difficulties. Practice has shown that these types of pavements often require more frequent repairs, one of the main reasons for this is reflected cracks appearance. The authors were faced with the task of creating a technique with which it would be possible to predict the intensity of cracking. Long-term observations data analysis of the P-22 (M6) "Caspian" highway sections was carried out to assess the intensity of reflected cracks formation. Based on the analysis performed, preliminary mathematical models of quantitative fracturing are presented.