Break and seat

A process used to prevent joint reflective cracking in an HMA overlay over old PCC pavement. It involves breaking up the underlying rigid pavement into relatively small pieces (on the order of about 0.3 m<sup>2</sup> to 0.6 m<sup>2</sup> (1 ft<sup>2</sup> to 2 ft<sup>2</sup>) by repeatedly dropping a large weight. The pieces are then seated by 2 to 3 passes of a large rubber tired roller.