Displacement of the HMA mixture in a longitudinal direction while compacting. Shoving under traffic loading is covered in a seperate article.
Mats that shove under compaction loading are generally unstable and are likely to continue to deform under traffic loading leading to roughness problems. If a mat is not adequately compacted because it is shoving, the resulting low density can cause the mat to be susceptible to decreased stiffness, reduced fatigue life, accelerated aging/decreased durability, rutting, raveling, and moisture damage (Hughes, 1984; Hughes, 1989).
Eliminate the causes for tender mixes or develop a compaction sequence and pattern to accommodate the tender mix. Compaction sequence and patterns will depend upon the type of mix tenderness.
- Hughes, C.S. (October 1984). “Importance of Asphalt Compaction.” Better Roads, Vol. 54, No. 10. pp. 22-24.↵
- Hughes, C.S. (1989). National Cooperative Highway Research Program Synthesis of Highway Practice 152: Compaction of Asphalt Pavement. Transportation Research Board, National Research Council. Washington, D.C.↵