SURFACE SEALS OF CONCRETE PAVEMENTS

DURING THE CONSTRUCTION SEASON OF 1969 THE PORT OF NEW YORK AUTHORITY APPLIED CHLORINATED RUBBER EPOXY TO TWO SECTIONS OF THE CONCRETE APPROACH RAMPS LEADING FROM THE LINCOLN TUNNEL TO THE UPPER LEVELS OF THE NEW YORK BUS TERMINAL. THE SURFACES OF THIS 20 YEAR OLD CONCRETE PAVEMENT WERE SLIGHTLY ROUGH AND BEGINNING TO POLISH. THE METHODS FOR PREPARING AND CLEANING THE SURFACE AND APPLYING THE SURFACE SEAL ARE DESCRIBED. IN ADDITION TO THE CHLORINATED RUBBER, COAL TAR EPOXY AND LINSEED OIL WERE APPLIED TO SECTIONS OF ONE LANE. PONY EXPERIENCE WITH THE LATTER TWO TREATMENTS IN THE PAST IS DESCRIBED, TOGETHER WITH EXPERIMENTAL USE OF POLYESTER TACK COATS AND COAL TAR PITCH EMULSION SEALCOATS.