for Highway Construction Page 652 of 71 5 SECTION 707 – PAINT
707.01 General.
Provide homogenous paint , without contaminant, and of a consistency suitable for use. Do not allow pigment to settle excessively, cake or thicken in the container, and become granular or curdled during the pigment dispersion in vehicle.
707.02 Paint Formula .
Follow formulations in accordance with federal paint specifications (TT) or the Steel Structures Painting Counc il (SSPC). Tint coatings sufficiently different to provide a contrast between coats. Match the topcoat colors as specified or according to color chip numbers in Federal Standard No. 595. The Engineer will not allow field tinting. Submit technical data sheets, safety data sheets, and specific application instructions for coatings. Submit the manufacturer’s quality control test results for each paint batch component used. Submit the weight per gallon, viscosity, percent solids by weight, and fi nish coat color chips for the selected color. Submit the percent of metallic zinc by weight in the cured zinc primer coat and percent of metallic zinc by weight in the zinc pigment component for zinc rich primers. The Engineer will accept the applicable Na tional Transportation Product Evaluation Program (NTPEP) and the North East Protective Coating Committee (NEPCOAT) QPL paint formula tions for products applied to structural steel specified formulations and paint systems. The Engineer will still test QPL paints from these programs as specified in this section and/or the manufacturer’s specification for acceptance in accordance as specified in quantities listed in the QA Manual. Paints with volatile organic compounds (VOC) of 3.5 pounds per gallon maximum are acceptable.
1.Formula No. 1 Primer, Inorganic Zinc Rich Specification: AASHTO M 300 Type I or SSPC Paint 20 Type 1 -C, Zinc Dust - ASTM D520 Type II. Meet Class B requirements for slip coefficient and creep resistance.
2.Formula No. 2 Primer, Organic Zinc Rich Specification: SSPC Paint 20 Type II, Zinc Dust – ASTM D520. Meet Class B requirements for slip coeffi cient and creep resistance when specified.
3.Formula No. 3 Primer, Zinc Rich Moisture -Cure Polyurethane Specification: SSPC Paint 40, Zinc Dust – ASTM D520 Type II. Meet Class B requirements for slip coefficient and creep resistance when s pecified.
4.Formula No. 4 Primer, High Solids Polyamide Epoxy Specification: SSPC Paint 22
5.Formula No. 5 Intermediate, High Solids Polyamide Epoxy Specification: SSPC Paint 22
6.Formula No. 6 Intermediate , Moisture -Cured Polyurethane, Micaceous Iron Oxide Reinforced, Performance- Based Specification: SSPC Paint 41 for Highway Construction Page 653 of 715 7. Formula No. 7 Topcoat, High Solids Polyamide Epoxy Specification: SSPC Paint 22
8.Formula No. 8 Topcoat, High Solids Aliphatic Polyurethane Specification: SSPC Paint 36
9.Formula No. 9 Topcoat, Aliphatic Moisture- Cured Polyurethane Specification: SSPC Paint 38
10.Formula No. 10 Micaceous Iron Oxide– Aluminum , Moistu re-Cured Polyurethane Specification: Volume Solids – 60 percent Minimum Weight Solids – 70 percent Minimum Pounds/Gallon – 10.0 Minimum Gloss – Flat
11.Formula No. 11 Primer, Latex, Exterior Specification: TT-P-1984. The Engineer will not accept paint containing lead, chromium or cadmium pigments, or lead driers.
12.Formula No. 12 Paint , Latex, Exterior, Semi -Gloss Specification: TT-P-19. The Engineer will not accept paint containing lead, chromium or cadmium pigments, lead driers, or mercurial compounds for fungicide.
13.Formula No. 13 Concrete Stain, Flat Specification: Provide pigmented sealer that is semi -opaque colored toner containing methyl methacrylate- ethyl acrylate cop olymer resins, toning pigments, and solvent. Suspend toning pigments in solution with a chemical suspension agent. Provide toning pigments that consist of laminar silicates, titanium dioxide, and inorganic oxides. The Engineer will not allow lead or chromi um compounds, settling, or color variation. Do not use vegetable or marine oils, paraffin materials, stearates, or organic pigments in the coating formulation. Volume Solids – 20 percent Minimum Weight Solids – 25 percent Minimum Pounds per Gallon – 9.0 M inimum Gloss – Flat for Highway Construction Page 654 of 71 5 14. Formu la No. 14 Highway Pavement Marking Paint, Waterborne Specification: The Department’s QPL for waterborne traffic line paint formula tions. Table 707. 02-1 – Waterborne Traffic Line Paint Formulations Parameter(a) White Yellow Density of Paint lb/gal (ASTM D1475) Within ± 0.25 lb/gal of qualification sample Consistency (ASTM D562): at 122°F (Kreb Units) at 77°F (Kreb Un its) at 50°F (Kreb Units) 80 minimum 80-95 100 maximum 80 minimum 80-95 100 maximum Total Nonvolatile Solids (%) (ASTM D2369) 76 minimum 76 minimum Pigment Solids (%) (ASTM D3723) 65 maximum 65 maximum Nonvolatile Vehicle, (%) by weight of the vehicl e (ASTM D2369, ASTM D3723) 41 minimum 41 minimum Vehicle Composition (ASTM D2621) DOW Fastrack HD -21A Pigment Composition (lb/gal) (Rutile TiO 2)(ASTM D5381) 1.0 minimum 0.30 maximum pH (Standard Units) (ASTM D70) 9.8 minimum 9.8 minimum VOC (grams/Lite r) (ASTM D3960) 100 maximum 100 maximum Static Heat Stability (Kreb Units) ±7 maximum ±7 maximum Freeze -Thaw (Kreb Units) ±5 maximum ±5 maximum Color (as approved) 37875 33538 Contrast Ratio 0.95 minimum 0.90 minimum Directional Reflectance (%) 85 minimum 50 minimum Yellowness Index 0.040 maximum Not Tested Flexibility Pass Pass Toxicity Characteristic Leaching Procedure (TCLP) (EPA Method 1311) Pass Pass Dry Time (ASTM D711) Max 10 minutes @ 15 mils wet
a.See Central Lab for testing details.
707.03 Certification .
Submit a manufacturer’s certificate and quality control test data of each batch or lot as specified in 106.04. for Highway Construction Page 655 of 715 707.04 Identification and Marking. Plainly mark each container with the following information:
1.Color.
2.Product or formula number.
3.Quantity .
4.Batch or lot number.
5.Date of manufacturing. for Highway Construction Page 656 of 71 5 SECTION 708 – METALS
708.01 General.
When metal is placed in the work, ensure it is without dirt, detrimental scale, pai nt, oil, or other foreign substance. Thin powdery rust and tight rust is not detrimental except in the case of prestressing reinforcement .
708.02 Reinforcing Steel .
Provide welded wire fabric for reinforcement that meets the requirements of AASHTO M 55. Provide other reinforcing steel meeting AASHTO M 31 Grade 40S or 60S. The Contractor may substitute deformed steel - welded wire reinforcement that meets AASHTO M 221 for AASHTO M 31 reinforcing steel or AASHTO M 55 welded wire fabric with approval. Provide epoxy -coated metal reinforcement in accordance with ASTM A775. Do not use colors in shades of brown that inhibit visual detection of rust spots and damage. Coat reinforcing steel, that is required to be epoxy -coated, in a plant certified by the Concrete Reinforcing Steel Institute (CRSI) as a fusion- bonded epoxy applicator.
708.03 Dowel B ars.
Provide smooth dowel bars meeting AASHTO M 254, except the steel material meeting AASHTO M 31 as an alternative may be provided by the Contractor. Epoxy coat the steel dowel bars in accordance with AASHTO M254 and as modified:
1.Apply 7- 13 mils epoxy coating thickness.
2.Epoxy coat the ends of the dowel bars as required by the manufacturer. Apply epoxy coating in a fusion bonded epoxy coating plant certified by the CRSI or another organization approved by the Materials Engineer. The Engineer may allow the use of alternate dowel bar materials.
708.04 Tie Bars .
Meet AASHT O M 31 Grade 40 or 60. Ensure tie bars are deformed and epoxy -coated. Provide epoxy -coated tie bars in accordance with ASTM A775.
708.05 Prestressing Steel.
Use high- tensile wire strand for prestressing steel meeting with ASTM A416 or uncoated high- strength steel bars meeting with ASTM A722. The Department requires prestressing steel in the same direction, transverse or longitudinal, in individual members be of the same type. Ensure the assembled units have a tensile strength of at least the manufacturer’s minimum guaranteed ultimate tensile strength if bars are to be extended by the use of couplers. Failure of the sample to meet this requirement is cause for rejection of that heat of bars and/or lot of couplers depending on the nature of failure. Obtain approval for the location of couplers in the member.
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 688–691 of 768.