PREPARATION OF PCC PAVEMENT FOR OVERLAY

This paper examines repair of portland cement concrete (PCC) pavement by overlay. Condition inventory and the several overlay techniques available now and under development are reviewed. Inventory treatment includes structural condition, vertical alignment or roughness, evaluation of subsurfaces, drainage, and relation of condition to overlay design. Existing and developmental pavement treatments are reviewed; discussion includes preparation, structural treatment, retarding reflection cracking, treatment of existing PCC pavement, interlayers, cushion courses, and planing and milling.