Monitoring and modeling of pavement response and performance task B : New York Pooled Fund Project TPF-5 (121) volume 2, I86 PCC

Technical report.PDFTech ReportFHWA/OH-2012/08BPooled Fund project TPF-5(121)State job no. 134287Agreement no. 21182Pavement designPavement performancePavement maintenanceMathematical modelsOhioOhio. Dept. of Transportation. Innovation, Research, and Implementation SectionSargand, Shad M.Khoury, Issam S.Padilla-Llano, DavidOhio Research Institute for Transportation and the EnvironmentOhio. Dept. of Transportation. Innovation, Research, and Implementation SectionNew York (State). Dept. of TransportationUnited States. Federal Highway AdministrationNTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and PerformanceNTL-HIGHWAY/ROAD TRANSPORTATION-Construction and MaintenanceNTL-HIGHWAY/ROAD TRANSPORTATION-DesignUS Transportation CollectionIn Cattaraugus County, New York State, Interstate 86 exhibited major distresses, and the jointed reinforcedportland cement concrete pavement (JRCP) and was in need of rehabilitation by 2004. Three experimental sectionswere constructed in June 2006 using an unbonded overlay of jointed plain concrete pavement (JPCP). In one sectionthe existing JRCP was untreated, in another it was rubblized, and in the third section it was broken and seated (B&S).Embedded sensors monitored strain, temperature, and displacement responses. The research effort included periodicmonitoring of stress and strains due to environmental loads and measurement of responses induced by a falling weightdeflectometer (FWD) to account for dynamic loads.Results of this study suggest that thermal gradients in the concrete slabs induce highest vertical displacements(curling), strains, and stresses in the untreated section. From dynamic loads, the largest deflections and strains areinduced in the rubblized and B&S sections, while the untreated section exhibits the least severe dynamic response.Environmental strain responses were typically more critical near the top surface of the concrete, often in tension,suggesting probable top-down cracking mechanisms. This research improves the understanding of the physical effectsof these fracturing techniques on unbonded overlays through a fully monitored investigation using in-situinstrumentation