483 ALASKA 2020 SECTION 708
708-1.01 GENERAL REQUIREMENTS . Ship paint in strong, substantial containers, plainly
marked with the name, weight, and volume of the paint content, together with the color formula, batch number, and the name and address of the manufacturer. Store materials in a cl osed weather proof, dry shelter at all times. Have the paint manufacturer furnish samples of the actual batches of paint supplied for the project for independent laboratory testing of chemical composition. Use reduction and clean up thinners approved by t he coating manufacturer. Measure and document all thinner reduction with records provided to the Engineer. Ship all thinners in their manufacturer’s original containers.
708-2.01 Paint for S Teel Structures.
1.Prime Coat . A single component, moisture cure, polyurethane (SC -MC-U) using zinc dust pigment, meeting the following: zinc powder 78% by weight, min. volume of solids 60% min. zinc in dry film 83% minimum, by weight (ASTM D521) weight per gallon 23 pounds, min. VOCs 3.75 pounds per gallon, max.
2.Intermediate Coat . A single component, moisture cure, polyurethane (SC -MC-U). Pigment color must contrast with the prime coat and the top coat. Meet the following: micaceous iron oxide (MIO) 3.3 pounds per gallon, min. (ASTM D5532, Type I) volume of solids 60% min. weight per gallon 12.5 pounds min. VOCs 3.75 pounds per gallon, max.
3.Top Coat . A single component, moisture cure, aliphatic polyurethane (SC -MC-ALIP- U). Pigment color FSS FED -STD-595B, color number 26492. Evaluate the color match as a general match under a daylight source using ASTM D1729. Meet the following: micaceous iron oxide (MIO) 3.3 pounds per gallon, min. (ASTM D5532, Type I) Volume of solids 60% min. Weight per gallon 12 pounds min. VOCs 3.75 pounds per gallon, max. All coatings must pass the fol lowing tests: Corrosion Resistance, ASTM B117, Salt Spray Test . Minimum of 5000 hours with less than 1/16 inch creep from scribe. Use 1/8 inch minimum thickness ASTM A36 steel panels, having SSPC - SP 10 Near White Blast with 1 to 2 mils angular profile. 484 ALASKA 2020 Accelerated Weathering, ASTM G154. Minimum 400 hours QUV B bulb with no chalking, cracking, or gloss loss greater than 20%. Forward Impact, ASTM D2794. Minimum 150 in- lb impact. Abrasion Resistance, ASTM D4060. Less than 90 mg loss on CS -17 wheel, 1 kg/load, 1000 cycles. Moisture Resistance, ASTM D4585. Minimum 1000 hours at 100 °F with no change in appearance. Flexibility, ASTM D522, Cylindrical Mandrel Bend Test . Bend around 1/2 inch diameter mandrel with no cracking. Adhesion, ASTM D4541. Minimum 500 psi on a certified pull test. Cyclic Weathering, ASTM D5894. Minimum 5000 hours, 15 cycles with less than 1/16 inch creep from scribe. Use 1/8 inch minimum thickness ASTM A36 steel panels, having SSPC -SP 10 Near White Blast with 1 to 2 mils angular profile.
708-2.02 PAINT FOR TIMBE R. Meet Master Painter’s Institute Detailed Performance Standard
MPI #119 Latex, Exterior, Gloss (MPI Gloss Level 6).
708-2.03 PAINT FOR T RAFFIC MARKINGS. Use one of the following:
1.Solvent Base Traffic Marking Paint. Paint must meet the requirements of Federal Specification A -A-2886B, TYPE II – Fast Dry -10 minutes no pick up; lead- free yellow (or all colors); or
2.Waterborne Traffic Marking Paint. Paint must meet the requirements of Federal Specification TT-P1952 F, TYPE II, or TYPE II I; or
3.The current State of Alaska DOT&PF maintenance specification for pavement marking paint.
708-2.04 PAINT FOR C ONCRETE. Meet Master Painter’s Institute Detailed Performance
Standard MPI #119 Latex, Exterior, Gloss (MPI Gloss Level 6). 485 ALASKA 2020 SECTION 709 REINFORCING STEEL AND WIRE ROPE
709-2.01 Reinforcing Steel.
1.Reinforcing Steel Bars . Furnish deformed reinforcing steel bars of the type, grade, and size as specified. For steel reinforcing bars used in bridge structures, use bars meeting ASTM A706, Grade 60. For all other structures, use bars meeting AASHTO M 31, Grade 60.
2.Headed Reinforcing Steel Bars . Furnish headed reinforcing steel bars meeting the requirements of ASTM A970, Class HA. Use reinforcing steel meeting Section 709- 2.01.1 unless otherwise noted.
3.Epoxy -Coated Reinforcing Steel Bars . Furnish epoxy -coated steel bars meeting the requirements of ASTM A775. Coat epoxy -coated reinforcing steel in an epoxy coating applicator plant certified in accordance with the Concrete Reinforcing Steel Institute (CRSI) Voluntary Certification Program. Use reinforcing steel meeting Section 709- 2.01.1 unless otherwise noted.
4.Steel Wire . Furnish plain steel wire of the size specified that meets the requirements of AASHTO M 32.
5.Steel Bar Mats . Furnish deformed steel bar mats of the type, grade, size, and spacing as specified. Unless otherwise noted, furnish steel bar mats meeting the requirements of AASHTO M 54, Grade 60.
6.Steel Welded Wire Fabric . Furnish plain steel welded wire fabric of the size and spacing specified that meets the requirements of AASHTO M 55.
7.Epoxy -Coating Patch Material . Furnish epoxy -coating patch material meeting the requirements of ASTM D3963.
8.Certification. Furnish a Certified Test Report from the manufacturer or an independent testing laborator y containing a list of dimensional, chemical, metallurgical, electrical, physical, and other required test results of the specified material certifying that the product or assembly has passed all specified tests. Include the following:
a.the project name and number;
b.the manufacturer's name;
c.the name of the product or assembly;
d.a complete description of the material;
e.country of origin;
f.the lot, heat, or batch number that identifies the material;
g.all required test results for the specified material from the sam e lot, heat, or batch defined in Subsection 709- 2.01.8.f; and,
h.a statement, signed by a person having legal authority to act for the manufacturer or the independent testing laboratory, that the test results show that the product or assembly to be incorpora ted into the project has been sampled and tested and the samples have passed all specified tests.
Source: Alaska Standard Specifications for Highway Construction, 2020 Edition. Pages 511–512 of 584.