for Highway Construction Page 437 of 71 5 SECTION 574 - ANTI -GRAFFITI COATING
574.01 Description.
Coat exposed surfaces of designated concrete superstructures and substructures, retaining walls and MSE walls and coping to a line one foot below finished grade. Cover surfaces of the bridges and walls except the deck surfaces and the underside of the decks.
574.02 Materials.
Provide anti -graffiti coating system consisting of either a one or two coat system to create a continuous pinhole- free film; the combination of coatings may be pigmented or clear. Use an aliphatic urethane system with a clear finish for graffiti system topcoat coating. Use a permanent type anti -graffiti coating for the protection of raw concrete substrates. Provi de color pigment of base or sealer coat specified on the plans. Apply in accordance with the manufacturers guidelines so that the coating system qualifies for all the guarantees and warranties provided by the manufacturer. Furnish the terms of the guarantees and warranties given by the manufacturer.
574.03 Construction Requirements.
Provide an ordinary surface finish on all surfaces to be coated in accordance with 502.03 or provide textured concrete surface as specified . Cure concrete in accordance with 502.03 after surface acceptance. Sandblast all surfaces to be coated clean and without any foreign substances, such as form release agents, curing compounds, dirt, laitance, leachates, oils, grease or other surface contaminants. Apply base or sealer coat to the concrete surfaces as required by manufacturer. Apply anti -graffiti coating in accordance with manufacturer’s written instructions, including surface pre paration, application rate and environmental conditions.
574.04 Method of Measurement.
The Engineer will measure acceptably completed work by the square foot.
574.05 Basis of Payment .
The Department will pay for acceptable quantities at the contract unit price as follows: Pay Item Pay Unit Anti-Graffiti Coating ................................................................................ SF for Highway Construction Page 438 of 71 5 SECTION 575 – TEXTURED CONCRETE SURFACE
575.01 Description.
Texture exposed concrete surfac es with plastic form liner patterns specified or other Engineer -approved methods.
575.02 Materials.
Not specified.
575.03 Construction Requirements.
Provide plastic form liner patterns bonded to the forms or alternate texturing methods for Engineer approval at least 2 weeks before concrete placement . Alternate texturing methods will require a field mock -up panel to ensure uniformity. Ensure inside form dimensions provide for full plan dimensions plus the t exturing thickness. Attach and treat plastic form liners with a release agent and then remove in accordance with the manufacturer's written instructions. Align the grooves in the form liner panels at construction joints. Conceal const ruction joints in the textured concrete surface.
575.04 Method of Measurement.
The Engineer will measure acceptably completed work by the square yard.
575.05 Basis of Payment .
The Department will pay for accepted quantit ies at the contract unit price as follows: Pay Item Pay Unit Textured Concrete Surface ..................................................................... SY The cost for materials , form liner, form placement , removal, and finishing work is incidental .