1059Protective Coating Material

1059.10.1 Scope. This specification covers modified urethane or polyurethane elastomeric coating to be used as

shown on the plans. This material will typically be applied under expansion devices for protection from deleterious agents in areas where aesthetics is not a high priority.

1059.10.2 General Requirements. The material shall be suitable for outdoor exposure and shall be resistant to

deterioration by ultraviolet light. Additives for ultraviolet stabilization shall not be added after the original manufacturing process. The material shall be suitable for application to concrete surfaces. Surface preparation shall be in accordance with the manufacturer’s recommendations. The material shall be suitable for application to obtain a thickness of 40 mils, dry film without runs or sags when applied to a vertical concrete surface. The material shall have a minimum shelf life, in unopened containers, of at least six months from the date of delivery.

1059.10.3 Cured Material. The cured material shall be in accordance with the following:

Protective Coating – Concrete Bents and Piers (Urethane) Property Requirement Shore A Hardness, ASTM D 2240 (Material shall be cured in 40 mil thick film for 7 days at 75 ± 2 F at 50% relative humidity. Test specimen shall be composed of plied pieces, to a minimum 1/4-inch thickness). 15, minimum Tensile Strength, ASTM D 412 (Method and time of cure may be modified as recommended by the manufacturer). 45 psi, minimum Elongation, ASTM D 412 (Method and time of cure may be modified as recommended by the manufacturer). 200 percent, minimum Water Vapor Permeability, ASTM D 1653 or ASTM E 96, Method BW 40 mil film thickness. 0.8 perms, maximum

1059.10.4 Packaging. All two-component materials shall be prepackaged to exact mixing quantities.

1059.10.5 Manufacturer and Brand Name Qualification. Prior to approval and use, the manufacturer shall

submit a representative one-gallon sample to Construction and Materials. Upon approval of the material, the brand name and manufacturer will be placed on a list of qualified Urethane Protective Coating Agents for Concrete Bents and Piers. The sample shall be identified by brand name, manufacturer's name and address, and shall be accompanied by the following:

1059.10.6 Acceptance. The contractor shall furnish a manufacturer's certification stating that the material

supplied is in accordance with all requirements specified and that the material furnished is of the same composition as originally qualified. The engineer reserves the right to sample the material at destination if deemed necessary. SECTION 1059.20 PROTECTIVE COATING – CONCRETE BENTS AND PIERS (EPOXY).

1059.20.1 Scope. This specification covers two-component modified polyamide converted epoxy to be used as

shown on the plans. This material will typically be applied under expansion devices where aesthetics is a high priority.

1059.20.2 Material. The material shall be suitable for application to obtain a minimum coating thickness of 6

mils, dry film without runs or sags when applied to a vertical concrete surface. Pot life and method and time of cure shall be in accordance with the manufacturer's recommendation. The material shall be suitable for outdoor exposure and shall be resistant to deterioration by ultraviolet light. Additives for ultraviolet stabilization shall not be added after the original manufacturing process. The material shall have a minimum shelf life, in unopened containers, of at least six months from the date of delivery.

1059.20.2 1 Color. The color shall be clear or concrete gray.

1059.20.2 2 Finish. The finish shall be high gloss.

1059.20.3 Packaging. Two-component material shall be prepackaged to exact mixing quantities.

1059.20.4 Manufacturer and Brand Name Qualification. Prior to approval and use, the manufacturer shall

submit a representative one-gallon sample to Construction and Materials. Upon approval of the material, the brand name and manufacturer will be placed on a list of qualified Epoxy Protective Coating Agents for Concrete Bents and Piers. The sample shall be identified by brand name, manufacturer's name and address, and accompanied by the following information:

1059.20.4 1 For either test, specific operating conditions shall be summarized and provided with the test results.

The film thickness on test specimens shall be 6 mils and shall show no cracking, flaking or blistering after exposure. Only slight discoloration will be permitted.

1059.20.4 2 In lieu of the accelerated weathering test results required in Sec 1059.20.4 (b), the manufacturer

may submit a use history showing satisfactory performance for three years in at least two exposed applications. Name, address and telephone number of the users shall be included in the use history.

1059.20.5 Acceptance. The contractor shall furnish a manufacturer's certification stating that the material

supplied is in accordance with all requirements specified and that the material furnished is of the same composition as originally qualified. The engineer reserves the right to sample the material at destination if deemed necessary. SECTION 1059.30 CONCRETE AND MASONRY PROTECTION SYSTEM.

1059.30.1 Scope. This specification covers clear penetrating siloxane or silane based sealer for use as shown on

the plans.

1059.30.2 Physical Properties. The sealer shall be breathable and non-yellowing and shall be in accordance

with the following requirements: Concrete and Masonry Protection System Specification Itema Sealer Type Vertical ApplicationHorizontal Application Solids Content, percent by weight, min. 6.7 20 Reduction in Water Absorption, percent, min. 80 85 Reduction in Chloride Intrusion, percent, min. 82 85 Water Vapor Transmission, percent, min. 110 aTested in accordance with NCHRP 244 Series tests.

1059.30.3 Manufacturer and Brand Name Qualification. Prior to approval and use, the manufacturer shall

submit a representative one-quart sample to Construction and Materials. The sample shall be identified as to brand name, designation as to horizontal or vertical application, manufacturer's name and address, and shall be accompanied by the manufacturer’s data and application sheets, and test results in accordance with Sec

1059.30.2 The manufacturer shall submit certification that the material complies with all requirements of this

specification. Upon approval of the material, the brand name and manufacturer will be placed on a list of qualified Concrete and Masonry Protection Systems.

1059.30.4 Field Approval. Prior to application of the sealer, including bulk purchase and delivery of products,

the contractor shall prepare a minimum 12 x 12 inch application sample on each of the specified concrete or masonry products for the purpose of demonstrating the final effect, visual and physical/chemical, of the planned installation. The contractor shall proceed with work only after the engineer’s acceptance of the test application for color and compatibility with the substrate.

1059.30.5 Acceptance. The contractor shall furnish a manufacturer's certification stating that the material

supplied is in accordance with all requirements specified and that the material furnished is of the same composition as originally approved. The engineer reserves the right to sample the material at destination if deemed necessary. SECTION 1059.40 SACRIFICIAL GRAFFITI PROTECTION SYSTEM.

1059.40.1 Scope. This specification covers a sacrificial graffiti protection system for application to all surfaces

as shown on the plans.

1059.40.2 Physical Properties. The sacrificial graffiti protection system shall be in accordance with the

following physical properties and shall be chemically compatible with any other coatings to be used. The material shall be suitable for application to obtain a wet-film thickness of 4 to 6 mils without runs or sags when applied to a vertical surface. Sacrificial Graffiti Protection System Item Requirement Melting Point, F, ASTM F 766 165 ±5 Solids Content, min., percent by weight, ASTM D 2834 26 Volatile Organic Content (VOC), lb/gal, max, ASTM D 3960 0.58

1059.40.3 Manufacturer and Brand Name Qualification. Prior to approval and use, the manufacturer shall

submit a representative one-gallon sample to Construction and Materials. The manufacturer shall submit documentation to Construction and Materials stating brand name, manufacturer's name and address and accompanied by the manufacturer’s data and application sheets. The manufacturer shall submit certification, including specific test results, that the material complies with all requirements of this specification. Upon approval of the material, the brand name and manufacturer will be placed on a list of qualified Sacrificial Graffiti Protection Systems.

1059.40.4 Field Approval. Prior to application of the sacrificial graffiti protection system, including bulk

purchase and delivery of products, the contractor shall prepare a minimum 12 x 12 inch application sample on each of the specified concrete or masonry products for the purpose of demonstrating the compatibility of the planned installation. If the sacrificial graffiti protection system is to be applied over previous coatings, the test specimen shall have already received these previous coatings. The contractor shall proceed with work only after the engineer’s acceptance of the test application for appearance and compatibility.

1059.40.5 Acceptance. The contractor shall furnish a manufacturer's certification stating that the material

supplied is in accordance with all requirements specified and that the material furnished is of the same composition as originally approved. The engineer reserves the right to sample the material at destination if deemed necessary. SECTION 1059.50 TEMPORARY COATING – CONCRETE BENTS AND PIERS (WEATHERING STEEL).

1059.50.1 Scope. This specification covers a system for protection against absorptive staining from unpainted,

corrosion-resistant steel during initial weathering as shown on plans.

1059.50.2 Physical Properties. The temporary coating shall be in accordance with the following physical

properties and shall be compatible with any other coatings to be used. The material shall be suitable for application to obtain a wet-film thickness of 4 to 6 mils without runs or sags when applied to a vertical surface. Temporary Coating – Concrete Bents and Piers (Weathering Steel) Item Requirement Melting Point, F , ASTM F 766 165 ±5 Solids Content, min., percent by weight, ASTM D 2834 26 Volatile Organic Content (VOC), lb/gal, max, ASTM D 3960 0.58

1059.50.3 Manufacturer and Brand Name Qualification. Prior to approval and use, the manufacturer shall

submit a representative one-gallon sample to Construction and Materials. The manufacturer shall submit documentation to Construction and Materials stating brand name, manufacturer's name and address, and accompanied by the manufacturer’s data and application sheets. The manufacturer shall submit certification, including specific test results, that the material complies with all requirements of this specification. Upon approval of the material, the brand name and manufacturer will be placed on a list of qualified Rust Staining Protection Systems.

1059.50.4 Acceptance. The contractor shall furnish a manufacturer's certification stating that the material

supplied is in accordance with all requirements specified and that the material furnished is of the same composition as originally approved. The engineer reserves the right to sample the material at destination if deemed necessary.