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If <br />0 <br />Ill <br />I <br />971 -4 Fast Dry Solvent Traffic Paint. <br />971 -4.1 General: Fast dry traffic paints intended for use under this Specification <br />shall include products that are single packaged and ready mixed. Upon curing, these <br />materials shall produce an adherent, reflective pavement marking capable of resisting <br />deformation by traffic. The manufacturer shall have the option of formulating the material <br />according to his own specifications. However, the requirements delineated in this <br />Specification and Section 710 shall apply regardless of the type of formulation used. The <br />material shall be free from all skins, dirt and foreign objects. <br />971 -4.2 Composition: <br />Component <br />Test Method <br />Criteria <br />Total Solids, by weight <br />ASTM D 2369 <br />75% minimum <br />Pigments, by weight <br />ASTM D 3723 <br />57% minimum <br />Vehicle Solids, % on Vehicle* <br />80 KU <br />40% minimum <br />Ti02, Type II Rutile (white paint <br />only) <br />ASTM D 476 <br />1.5 lb/gal [0.18 kg /L] minimum <br />Volatile Organic Content, (VOC) <br />ASTM D 3960 <br />150 g/L maximum <br />971 -4.3 Physical Requirements: The material shall meet the following criteria: <br />Property <br />Test Method <br />Minimum <br />Maximum <br />Density <br />ASTM D 1475 <br />13.5 ± 0.37 lb/gal <br />[1.62 ± 0.17 kg /L] <br />N/A <br />Consistency at 170'F <br />[77 °C] <br />ASTM D 562 <br />80 KU <br />100 KU <br />Fineness of Grind <br />ASTM D 1 210 <br />2 (HS) [75 µml <br />3(HS) [65 µm] <br />Dry Opacity at <br />5 mils [127 µm] WFT <br />Fed Std 141 a <br />Method 4121 <br />0.96 <br />- <br />Bleed Ratio <br />IFed Spec TT -P -85D <br />0.95 <br />- <br />Flexibility <br />IFed Spec TT -P -11 5D <br />Pass <br />- <br />Abrasion Resistance <br />961- 10.6.3 <br />Pass <br />- <br />971 -4.3.1 Set To Bear Traffic Time: When applied at the temperatures and <br />thickness specified by Section 710, the material shall set to bear traffic in not more than <br />two minutes. <br />971 -4.3.2 Abrasion Resistance: Test four samples per LOT using a Taber <br />Abrader. The paint shall be applied to specimen plates using a drawdown blade having a <br />clearance of 26 mils [660 µm]. Air dry each sample for 30 minutes and bake at 220 °F <br />[105 °C] for 18 hours. Clean with a soft brush and weigh each sample. Abrade samples for <br />1,000 cycles with 1.1 lb [500 g] weights and CS -10 wheels. Clean the samples with a <br />soft brush and weigh again. The average weight loss for the four plates shall not exceed <br />0.178 oz [50 mg] per plate. <br />971 -4.3.3 Retroreflectivity: The white and yellow pavement markings shall <br />attain an initial retroreflectance of not less than 300 mcd /Ix•m2 and 250 mcd /lx•m2, <br />respectively. The retroreflectance of the white and yellow pavement markings at the end <br />of the six month service life shall not be less than 150 mcd /Ix m2. <br />March 2007 01000 -190 03- 4122.D t <br />