epoxy system designated and color matched for patching the epoxy coating used. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CATEGORY 900 MATERIALS SECTION 917 — MISCELLANEOUS PROTECTIVE COATINGS
917.01 Epoxy Protective Coatings for Concrete
Protective coatings shall be two component epoxy systems for use in conjunction with concrete. One component shall be a clear or pigmented condensation product of the reaction of epichlorohydrin with bisphenol A, the resin of which shall be composed of 100 percent reactive constituents. The other component shall be a clear polyamide hardener. The producer shall submit a sample of each component for laboratory analysis. The sample shall be coded as the original sample. The original and all subsequent samples shall conform to the following: TEST PROPERTY TEST METHOD SPECIFICATION LIMITS Pot Life, hr min Fed. Spec TT-C-535 8 Color AMS-STD-595A Gray No. 26440 Dry Film Thickness 1st coat, mil min 2nd coat, mil min D1005 2 3 Sagging D4400 Must pass test for Recommended film Thickness Flexibility Federal Spec TT-P-115 Must not crack, check or delaminate Infrared Spectrogram Equipment Manufacturer's Procedure Each component shall match original sample Tensile Strength, psi min None 400
917.02 Fusion Bonded Epoxy Powder Coatings for Steel
A775. The epoxy protective coating shall be a one-coat, heat curable, thermosetting powdered coating that is electrostatically applied on metal surfaces as specified. For reinforcement steel, the color shall be bright, in order to contrast with the normal color of reinforcement and rust (e.g. orange, red, green, yellow etc. and not brown or any color in the rust family). Reinforcement steel coated before fabrication shall have all hairline cracks and minor damage on fabrication bends patched, even if there is no bond loss. Select epoxy coating material from the Qualified Products List (QPL) maintained by the Office of Materials Technology (OMT).
917.02.01 Touch Up System. D3963. Material used for the touch up system shall be a two part
2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS Patching material shall be available through the manufacturer of the epoxy powder. The patching material shall be fully cured one hour after application at 35 F ambient.
917.02.02 Certification. The manufacturer shall furnish certification as specified in TC-1.03.
917.03 Fusion Bonded Polyester Powder System
917.03.01 Materials. The polyester powder system shall consist of an epoxy zinc rich primer
and a super durable TGIC (Triglycidyl Isocyanurate) polyester topcoat. The finish powder shall be a TGIC polyester powder. The polyester powder manufacturer shall be selected from the QPL maintained by OMT.
917.03.02 Primer. Primer shall be an epoxy zinc rich primer supplied by the same manufacturer as the finish powder. Primer shall meet the following:
TEST PROPERTY TEST METHOD SPECIFICATION LIMITS Salt Spray 3000 hrs B117 < 1/32 in. undercut, no blisters Humidity resistance 3000 hrs D2247 < 1/32 in. undercut, no blisters Hardness D3363 2H-3H Adhesion D3359 5B
917.03.03 Qualification Requirements. The following physical tests willbe required to
qualify the polyester and are not required for certification. TEST PROPERTY TEST METHOD SPECIFICATION LIMITS Abrasion Resistance D1044 - Taber Abraser CS-10, 1000 gm load, 1000 cycles, 100 mg max weight loss Adhesion D3359, Method A (Bonderite 1000 panel) Rating 5A Gloss D525, 60° initial 30 - 45 per AMS-STD-595A Hardness D3363 Min 2H - No gouge Impact D2794 Pass 80 in. lb Salt Spray Resistance B117, D1654 1000 hr (Bonderite 1000 panel) Table 2, Rating 7 Thickness D7091 7 ± 2 mills Color E1331 or E1338 As specified in the Contract Documents from AMS-STD-595A Color No. 20040 Infrared Spectrogram Equipment manufacture's procedures Manufacturer's IR specified in TC-1.03. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS Weather Resistance D4587, test condition
D.Test shall be conducted with a UVA lamp (340 nm peak) for 1000 hr 50% min gloss retention Specific Gravity D5965 Manufacturer's result Chloride Permeability A775, A 1.3.5 <0.000lM
917.03.04 Certification. The polyester powder manufacturer shall furnish production batch
certification as specified in TC-1.03 showing conformance to the following: TEST PROPERTY TEST METHOD SPECIFICATION LIMITS Infrared Spectrogram D2621 Match Qualification sample Taber Abrasion Resistance, mg loss, max 4060 100 Specific gravity D5965 (Method A) Qualification sample ± 0.02 Color E1331 or E1338 Match AMS-STD-595A color no. specified in Contract Documents
917.03.05 Coating System.
Powder Coat Dry Film Thickness Usage Epoxy primer I 2.5-4.0 Primer Polyester Powder II 5.0-7.0 Finish
917.03.06 Acceptance. Acceptance will be based on the quality control test results required
on the manufacturer's certification. The coating applicator shall be responsible for reviewing certifications to ensure conformance to TC-l .03. The coating applicator shall also maintain a file of all reviewed certifications.
917.04 Anti-Graffiti Protective Coatings
The manufacturer shall provide certifications for all anti-graffiti protective coatings material as ∗3 mil wet film tested at 77 degrees 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS
917.04.01 Materials. Use any product that meets specifications limits described below.
LABORATORY TESTING TEST PROPERTY TEST METHOD SPECIFICATION LIMITS Graffiti Resistance (solvent cleanable) Complete removal of solvent-based acrylic, polyurethane, and alkyd spray paint; after exposure; and recleanability D6578 Cleanability Level 8, 9, or 10 VOC (EPA rule 40 CFR 59) D3960 Less than specified limits of local, state, or federal codes and regulations Fluid Resistance, Spot Test using Paint Thinner and Gasoline D1308 No blistering, discoloration, softening or adhesion loss Set-to-Touch Time D1640* 4 hr. maximum Dry-Through Time D1640* 24 hr. maximum Adhesion D6677 Passes, Rating 8 Outdoor Weathering Exposure (solvent and water cleanable) D6578 No blistering, cracking, checking, chalking, or delamination; color change less than 2# Delta E CIE LAB units: Retention of 60°Gloss ratio >=.90 Lab-Accelerated Weathering Exposure, Cycle 2, UV light, 2000 cycles D4587 No visible color change and loss of gloss, and no film erosion and cracking Standard Outdoor Exposure, outdoor exposure of 6 months minimum G7 No visible color change and loss of gloss, and no film erosion and cracking MEK Resistance D4752 min 4. Breathability: D1653 >95% water vapor transmission. 918 — TRAFFIC BARRIERS 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CATEGORY 900 MATERIALS SECTION 918 — TRAFFIC BARRIERS
918.00 Certification
The manufacturer shall furnish certification as specified in TC-1.03.
918.01 Traffic Barrier W-Beam/Thrie-Beam
M 180, Type II or VI for rail elements and end treatments. Coat galvanized rail and end treatment elements designated for fusion bonded polyester powder coating as specified in Section 465. Galvanized rail and end treatments to be fusion bonded powder coated shall be fabricated and have holes punched prior to being hot dipped galvanized.
918.02 Traffic Barrier Posts
A36 for steel and M 111 for galvanized coating. Coat galvanized post elements designated for fusion bonded polyester powder coating as specified in Section 465. Galvanized posts to be fusion bonded powder coated shall be fabricated and have holes punched prior to being hot dipped galvanized.
918.03 Hardware for Traffic Barriers
M 183 for quality of steel and M 232 for galvanized coating.
918.04 Timber Rail and Posts
M 168.
918.05 Wire Rope
Federal Specification RR-W-410, Type I, General Purpose, Class 2, 6 by 19, improved plow steel, fiber core. The individual wire strands shall have a zinc coating of 0.8 oz/ft 2 when tested according to T 65.
Source: Maryland Standard Specifications for Construction and Materials, 2025 Edition. Pages 1012–1015 of 1,113.