Use of Asphalt Rubber for Crack Sealing in Asphalt Concrete Pavements and For Joint Sealing In Portland Cement Concrete Pavements, The Author(s): Thompson, Vern Origin: Missouri Date: October, 1989 Categories: Performance Key Words: Asphalt rubber, crack sealing Summary: Crack sealing in asphalt concrete pavements is thought by many to be an ineffective, low-priority pavement maintenance task which is performed only after other pavement maintenance activities, such as overlays, seal coats and fog seals are completed and only if time, budget and manpower are sufficient. Due to this belief, crack in many miles of highways are not sealed each year resulting in accelerating pavement deterioration due to moisture and increased oxidation of the binder. The “filling” of cracks in asphalt pavements and joints in concrete pavement has been a maintenance and construction function for many years. Until recent years, the “filling” approach was accepted as a medial maintenance task knowing the value was a short-term direction. Yet others, declaring to value in preserving their pavements with crack filling, deleted this task from their maintenance and construction programs altogether. The questions that we must ask ourselves today is: “Do we want to “fill” the cracks/joints or do we want to “seal” the crack/joint?” From this point forward reference will be made to “sealing” our cracked pavements with a long-term direction.