Precast pavement technology is an innovative process that can be used to meet the need for rapid repair and rehabilitation of asphalt and jointed concrete pavements. These systems are primarily used for rapid repair and rehabilitation of asphalt and portland cement concrete (PCC) pavements in high-volume-traffic roadways.

The primary purpose for sealing rigid pavement joints is to prevent or reduce the amount of water infiltrating into pavement structure. Effectiveness of joint sealants to protect jointed concrete pavement against water related distresses has been a focus of great interest recently. Results confirmed that if joint seals are properly installed, they can be very effective in preventing moisture infiltration and thus performance issues related to erosion damage. Unsealed joints had significantly higher flow rates compared to joints with varying degrees of damaged sealants.

This brief creates a foundation for future research taking into account various neighborhood characteristics. Making use of GIS data is necessary in order to demonstrate the impacts of reflective pavements accurately at urban scale. Results show; Evaluating the effectiveness of albedo modification strategies (changing surface reflectivity) involves quantifying the net impacts from both radiative forcing (RF) and building energy demand (BED). The relative magnitude of RF and BED depends on context, but usually RF is more significant.

From the databases and examples of surface texture modifications, it is apparent that quieter concrete surfaces can be achieved. As with any evaluation of the effectiveness of any pavement change, the amount of reduction depends not only the end “quiet” pavement, but also on the initial pavement performance.

Seal/No Seal (SNS) Report: Wiess, Janney, Elsner Associates, Inc. (WJE) has completed research to develop practical field tests procedures that can measure and indicate when a sawcut joint is clean and dry enough to accept sealant. The intent of this test program was to develop reliable and practical test methods for assessing the cleanliness and moisture conditions in sawcut concrete joints to determine their preparedness for accepting sealants.

Degraded aircraft performance on wet runways has been a factor in the majority of aircraft accident overruns on landing. This study was conducted to determine the current risks of landing on a wet runway and the benefit-cost ratio of changes in procedures for accounting for wet runways on landing. It was found that the risks of landing on wet runways are greatly reduced if the runways are grooved or have a porous friction course (PFC) overlay. Risks for landings during heavy rainfall on un-grooved/non-PFC runways were found to be much higher than acceptable risks in aviation.