HMA OVERLAY CONSTRUCTION WITH ONE-PASS/LANE-WIDTH PCCP RUBBLIZATION MARSHALL R. THOMPSON... ET AL..

Various Portland Cement Concrete Pavement (PCCP) types were originally constructed on the Illinois Interstate System. The PCCP included Jointed Reinforced Concrete Pavements (JRCP), Jointed Concrete Pavements (JCP), and Continuously Reinforced Concrete Pavements (CRCP). Major PCCP distresses are slab cracking, joint deterioration and faulting, CRCP "punchouts", PCC deterioration, and Hot Mix Asphalt Overlay (HMA OL) reflective cracking and subsequent crack deterioration. PCC deterioration extent and severity increase considerably as the pavement ages. Many of the original PCC pavements on the Illinois Interstate System have been rehabilitated. Illinois DOT (IDOT) used repair/rehabilitation techniques such as slab jacking, slab patching, joint repair/replacement, diamond grinding, milling, and HMA overlay in initial Interstate PCCP rehabilitation projects. Many complicating factors arise in selecting PCCP rehabilitation options, particularly when the section has been previously rehabilitated. This article discusses pavement fracturing techniques, equipment developments, IDOT rubblization experiences, equipment considerations, two dense-graded mixtures, and indications for the future.