Asphalt Rubber Technology Information Center
Use of Asphalt Rubber for Crack Sealing in Asphalt Concrete Pavements and For Joint Sealing In
Portland Cement Concrete Pavements, The
Thompson, Vern  
October, 1989  
Key Words:
Asphalt rubber, crack sealing  
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
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