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515.02 Materials Materials shall meet the requirements of Type 1c penetrating silane
concrete sealers, and be listed on the Department Qualified Pro ducts List (QPL).
515.03 Surface Preparation On surfaces to be treated, all void s shall be filled with
mortar and the entire surface shall be dressed by dry rubbing t o remove form marks and blemishes to present a neat appearance. The concrete shall rem ain dry for at least 48 hours before treatment and shall be free of laitance, oil, grease, di rt, dust, curing compound or any other deleterious materials. All traces of dust shall be remov ed immediately before applying the silane sealer. The treatment shall not be done until at least 14 days after ca sting the concrete, or in accordance with the manufacturer’s published recommendations, a nd completed at least 24 hours before the treated por tion is opened to traffic.
515.04 Application The application rate and method of applicat ion shall be in
accordance with the manufacturer’s published recommendations. When practical, treatment of the concrete surfaces shall be com pleted before exposure to deicing salts. The temperature of the concrete to be treated s hall be above 40 degrees Fahrenheit at the time of application, or per the manufacturer’ s published recommendations.
515.05 Method of Measurement Protective coating for concrete s urfaces will be
measured for payment by the square yard or lump sum unit as spe cified, satisfactorily applied and accepted.
515.06 Basis of Payment Protective coating for concrete surfac es will be paid for at the
contract unit price per square yard or lump sum, as specified. Payment will be made under: P a y I t e m P a y U n i t
515.20 Protective Coating for Concrete Surfaces Squar e Yard
515.21 Protective Coating for Concrete Surfaces Lump Sum
SECTION 516 - STYRENE-BUTADIENNE LATEX MODIFIED PORTLAND CEMENT MORTAR AND CONCRETE SECTION 517 - SHOTCRETE SECTION 518 - STRUCTURAL CONCRETE REPAIR