TT-P-1952 Paint, Traffic And Airfield Marking, WaterborneThis specification covers three types of low VOC volatile organic compounds, ready-mixed, one-component, 100% acrylic waterborne airfield and traffic marking paint. The paint is suitable for application on such traffic-bearing surfaces as Portland cement concrete, bituminous cement concrete, asphalt, tar, and previously painted areas of these surfaces. The paint may be used either alone or to bind reflective beads.

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TT-P-1952E

4.3.9  Color.

4.3.9.1  Sample preparation. Use the test panels prepared for the accelerated weathering test (4.3.10.1).

4.3.9.2  Daylight directional reflectance. For the white paint, determine the directional reflectance before and after weathering in accordance with ASTM E 1347 using the 45/0 illumination. Evaluate for conformance with Table 1.

4.3.9.3  Color match. For colors other than white and yellow, determine the color difference of the paint before and after weathering in accordance with ASTM D 2244 using CIE Illuminant D65 with the 10 degree standard observer. Evaluate for conformance with 3.2.7.

4.3.9.4  Yellow color match. Determine the color match for yellow paint before and after weathering in accordance with ASTM D 1729 with the daylight illumination represented by CIE Illuminant D75 or D65.  Evaluate for conformance with 3.2.7.3.

4.3.10  Accelerated weathering.

4.3.10.1  Sample preparation. Apply the paint at a wet film thickness of 0.33 mm

(0.013 in) to four 8 by 15 cm solvent-cleaned aluminum panels. Air-dry the sample for

48 hours under standard conditions.

4.3.10.2  Testing conditions. Test in accordance with ASTM G 154 using both ultraviolet light (UV-B PS-40) and condensate exposure, 300 hours total, alternating 4 hours of UV exposure at 60°C and 4 hours of condensate exposure at 40°C.

4.3.10.3  Evaluation. Remove the samples and condition for 24 hours under standard conditions. Determine the directional reflectance and color match using the procedures in 4.3.9.2 and 4.3.9.3. Evaluate for conformance with the color requirements in 3.2.7. Using the procedure described in 4.3.12, run the scrub resistance test.

Evaluate for conformance with 3.2.13.

4.3.11  Dry opacity. Use the procedure of ASTM 2805, calculate the contrast ratio of the paint applied at a wet film thickness of 0.13 mm (0.005 in). Evaluate for conformance with Table 1.

4.3.12  Scrub resistance. Using the procedure of ASTM D 2486 modified to use the 8 by 15 cm test panels from the accelerated weathering test (4.3.10), evaluate for conformance with 3.2.13.

4.3.13  Heat-shear stability. One pint of the paint is sheared in a kitchen blender at high speed to 65°C. The blender should have a tight-fitting lid and taped to minimize volatile loss. When the paint reaches 65°C, stop the blender, immediately can and apply

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