515Protective Coating for Concrete Surfaces

515.01 Description This work shall consist of furnishing and applying a protective

coating on concrete surfaces as called for on the Plans or as designated by the Resident in accordance with these specifications and the manufacturer’s published recommendations. 5-120

515.02 Materials Materials shall meet the requirements of Type 1c penetrating silane

concrete sealers, and be listed on the Department Qualified Products List (QPL).

515.03 Surface Preparation On surfaces to be treated, all voids shall be filled with

mortar and the entire surface shall be dressed by dry rubbing to remove form marks and blemishes to present a neat appearance. The concrete shall remain dry for at least 48 hours before treatment and shall be free of laitance, oil, grease, dirt, dust, curing compound or any other deleterious materials. All traces of dust shall be removed immediately before applying the silane sealer. The treatment shall not be done until at least 14 days after casting the concrete, or in accordance with the manufacturer’s published recommendations, and completed at least 24 hours before the treated portion is opened to traffic.

515.04 Application The application rate and method of application shall be in

accordance with the manufacturer’s published recommendations. When practical, treatment of the concrete surfaces shall be completed before exposure to deicing salts. The temperature of the concrete to be treated shall 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 surfaces will be

measured for payment by the square yard or lump sum unit as specified, satisfactorily applied and accepted.

515.06 Basis of Payment Protective coating for concrete surfaces 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 Reserved