TRAFFIC PAINT

3.1 WHITE AND YELLOW HIGH BUILD FAST DRY TRAFFIC PAINT 3.1.1 Materials: Ennis Flint EF Series or approved equal high build fast dry waterborne traffic paints for use in marking parking lots and roads. Paint may be applied ambient airless, conventional or heated for faster dry time. Paint shall conform to current VOC regulations and to the requirements of Federal Specification TT-P-1952F Types III. These paints must have a no pickup time of no more than ten minutes when properly applied at ambient conditions of 77 degrees F at 50% humidity. The no pick up time shall be two minutes when glass beads are applied at a rate of 6 lbs per gallon to a 15 mil wet line when applied at the weather conditions listed above. Paint meets TT-P-1952F types III Finish: Flat Color: White, Yellow Volume Solids: 60% minimum Weight Solids: 75% minimum VOC (EPA Method 24): <100 g/L; 0.85 lb/gal 3.1.2 Coverage: Latex Marking Paint @ 15 mils (375 microns) wet, 9.0 mils (225 microns) dft, approximately 320 lineal feet of standard 4" stripe per gallon. Packaging: 5 gallon / 55 gallon 3.2 TYPE PM GLASS BEADS FOR APPLICATION ON PAVEMENT MARKING PAINT (Material shall conform to MoDOT Standards, MGS 03-06) 3.2.1 These specifications cover Type PM moisture resistant glass beads for dropon application on traffic marking material for the production of a reflective surface to improve night visibility. The beads shall be highly resistant to traffic wear and to the effects of weathering. 3.2.2 Unless otherwise specified, references to a national standard agency specification (AASHTO, ASTM, etc.) are the latest revisions in effect at the time of the contract letting. 3.2.3 Materials: The beads shall be transparent, clean, colorless glass, smooth and spherically shaped, free from murkiness, pits, or excessive air bubbles and conform to the following specific requirements: 3.2.3.1 Flow Properties. The beads shall flow properly when tested in accordance with AASHTO M 247. 3.2.3.2 Refractive Index. The beads shall have a minimum refractive index of 1.50-1.55 when tested in accordance with AASHTO M 247. 3.2.3.3 Roundness. All beads passing the No. 30 sieve shall have a minimum of 75 percent true spheres when tested in accordance with ASTM D 1155. All beads retained on the No. 20 and No. 30 sieves shall have a minimum of 80 percent true spheres (determined visually per aspect ratio using microfiche reader). Testing to be in accordance with Federal Lands Highway (FLH) Test Method T520-93. 3.2.3.4 Gradation. The beads shall meet the following gradation requirements when tested in accordance with ASTM D 1214. U. S. Standard Sieve No./ Percent Retained 20 3-10 30 15-35 50 45-75 70 0-10 Pan 0-5 3.2.3.5 Water Resistance. The beads shall show no readily discernible dulling and the amount of 0.1 Normal Hydrochloric Acid needed to titrate the filtrate shall not exceed 4.5 milliliters, when tested in accordance with this specification. 3.2.3.6 Calcium Chloride Resistance. The beads shall show no readily discernible dulling when tested in accordance with this specification. 3.2.3.7 Sodium Sulfide Resistance. The beads shall show no readily discernible darkening or dulling when tested in accordance with this specification.