Summary of CRCP Long-Term Performance (CRSI Research Series No. 9)

CRSI - CRCP Long-Term PerformanceSince the 1960s, thousands of miles of continuously reinforced concrete pavement (CRCP) have been built in the U.S. These pavements have typically provided 20 or more years of service life without requiring major rehabilitation.

CRCP is a portland cement concrete pavement with continuous longitudinal steel reinforcement and no intermediate expansion or contraction joints. CRCP is designed to develop a transverse cracking pattern, with cracks generally spaced at about 0.6 to 1.8 meters (2.0 to 5.9 feet).

The cracking pattern is governed by environmental conditions at time of construction, amount of steel reinforcement, and concrete strength. The longitudinal reinforcement restrains the opening of the cracks and provides high load transfer across them.

As a result, CRCP, when properly designed and constructed, maintains a relatively low state of stress under load, providing excellent performance. The CRCP riding quality is typically very good and will remain good as long as there is structural continuity of the transverse cracks.

The LTPP GPS-5 data used in the study reported here were obtained from DataPave Version 2.0, FHWA, released September 1999.

 

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