PROTECTION OF CONCRETE FROM DELETERIOUS EFFECTS OF ICE REMOVAL CHEMICALS

THE PROTECTION OF PORTLAND CEMENT CONCRETE AGAINST THE ACTION OF SODIUM CHLORIDE AND CALCIUM CHLORIDE DEICING CHEMICALS IS BEING STUDIED. LABORATORY TESTS AND FIELD APPLICATIONS ARE BEING CONDUCTED WITH COAL TAR AND WATER GAS TAR AS A SEALER. THE TESTS INCLUDED A DETERMINATION OF THE BEST TIME OF APPLICATION OF THE SEALER. IT IS CONCLUDED THAT A COKE OVEN COAL TAR MATERIAL RETARDS OR PREVENTS DAMAGE TO THE CONCRETE FROM ICE REMOVAL CHEMICALS AND THE BEST RESULTS ARE OBTAINED IF IT IS APPLIED BEFORE THE PAVEMENT IS OPENED TO TRAFFIC.