The use of fiber reinforcement in latex modified concrete overlay : final report.

1645151PDFTech ReportFHWA/NC/2016-07NCDOT Project 2016-07Concrete overlaysRepairingRehabilitation (Maintenance)Service lifePolymer modificationUnited StatesNorth CarolinaNorth Carolina. Dept. of Transportation. Research and Analysis GroupSmyl, DannyMohammadian, ArmitaPark, SungwooLucier, GregoryPour-Ghaz, MohammadNorth Carolina State University. Dept. of Civil, Construction, and Environmental EngineeringNorth Carolina. Dept. of Transportation. Research and Analysis GroupUnited States. Federal Highway AdministrationUS Transportation CollectionThe requirement to quickly reopen highways in North Carolina has motivated the increased use of rapid-setting concrete in overlays. The addition of polymer latex to the material has been used to increase the service life of the overlays. The latex modified very early strength concrete (LMCVES), however has been reported to exhibit cracking early on after opening the road to traffic. To address this, this report investigates the early-age behavior and the use of non-metallic fiber reinforcement in LMC-VES. A state-of-the-art literature review is provided, an extensive experimental program is conducted, a review of current construction practice is presented, and findings and recommendations are reported