Abstract

With the airlines reporting passenger numbers returning to pre – September 11, 2001 levels, demand for more aircraft operations at the nation’s airports is continuing to grow. This growth will continue to stress the nation’s older concrete airport pavement infrastructure that has already served beyond its design and service limits for which it was constructed. As a result, a major portion of these concrete airport pavements will require rehabilitation in the very near future.

Traditionally, concrete pavement restoration (CPR) procedures have been employed to maintain these pavements in a fair to good condition. With growing demand and rapidly aging pavements, these CPR procedures are becoming more costly and less effective as the present pavement condition ratings are reaching a critical point where major rehabilitation is required.

Rubblization and repaving with HMA is quickly becoming the PCCP rehabilitation technique of choice for old deteriorated PCCP airfields. In the past seven years, well over one-half million square meters of PCCP had been rubblized in place, resulting in a stiff unbound granular base layer for new HMA pavements.

With the FAA’s recently published guidance and specification for rubblizing airfield PCCP, the use of rubblization should continue to grow on both civilian and military airfields. The same benefits that highway agencies realize with rubblization are now being recognized by airfield agencies. This is vital as our airfield pavement infrastructure, much of which is PCCP, continues to age beyond the point of restoration.


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