TRB’s second Strategic Highway Research Program (SHRP 2) Renewal Project R21 has released a prepublication, non-edited draft version of a report titled Composite Pavement Systems Volume 1: HMA/PCC Pavements that investigates the structural and functional performance of surfacing a new Portland cement concrete (PCC) pavement layer with a high-quality hot mix asphalt (HMA) layer.
The second report in the series, Composite Pavement Systems Volume 2: PCC/PCC Pavements explores the structural and functional performance of placing a relatively thin, high-quality PCC surface atop a thicker PCC layer.
Both of these new composite pavement systems have shown great promise for providing strong, durable, safe, smooth, and quiet pavements that need minimal maintenance.
The appendices to the two volume report provide additional detail, understanding, and history on HMA/PCC and PCC/PCC pavements.