TRB Electronic Circular E-C087: Rubblization of Portland Cement Concrete Pavements includes non-peer reviewed papers that were written based on presentations made during sessions on rubblization of portland cement concrete pavements at the TRB 84 Annual Meeting in January 2005. Hot-mix asphalt (HMA) overlays can also be considered for application to an existing, deteriorated portland cement concrete (PCC) pavement, providing measures are taken to eliminate reflection cracking emanating from the cracks and joints in the PCC pavement through the HMA overlay. One such measure is to rubblize existing PCC pavement slabs into fragments.