Abstract
The Office of Preconstruction, Construction, and Pavements in the Federal Highway Administration (FHWA) has assisted more than 30 highway agencies throughout the United States of America (USA) to implement the use of precast concrete panels for rapid repair and rehabilitation of both concrete and asphalt pavements. Precast concrete pavement (PCP) provides several advantages over traditional cast-in-place concrete with benefits accruing to both owners and users of the roadways. These advantages include better concrete quality and durability, long-life pavement performance, and improved maintenance of traffic. Although the initial cost of PCP typically is higher than that of cast-in-place concrete, the quality of concrete in the precast panels delivered to the project site is assured by well-written specifications and professional inspection, the precast panels can receive traffic loadings immediately after installation, and repeated interruptions of traffic and extended work zones are either reduced or eliminated. Extended lane-closure durations must be avoided to prevent unacceptable levels of traffic congestion, which means repair and rehabilitation work must be completed rapidly. Numerous projects have been completed by using rapid-hardening concrete; however, the results have been inconsistent. The use of PCP has been shown to be a promising alternative [1]. The service life of PCP in intermittent full-depth repairs of concrete pavements is expected to be at least 20 years. The service life of PCP in longer lengths of heavily trafficked pavements is expected to be 40 years or more without significant maintenance.
Published Version
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