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

Accelerated weathering		3.2.12	G 154	4.3.10
Scrub resistance	Yes	3.2.13	D 2486	4.3.12
Volatile organic content		Table 1	D 2369	---
Consistency	Yes	Table 1	D 562	---
Solids by volume	Yes	Table 1	D 2697	---
Dry opacity	Yes	Table 1	D 2805	4.3.11
Dry time (no pick up)	Yes	Table 1	D 711	---
Fineness of dispersion	Yes	Table 1	D 1210	---
Bleeding ratio		Table 1	D 969	---
Pigment (percent by weight)		Table 1	D 3723	---
Titanium dioxide		3.2.14	D 1394	4.3.16

4.3.1 Prohibited materials.

4.3.1.1 Lead content. Determine lead in accordance with ASTM D 3335 or by the use of an X-ray fluorescence spectrometer in accordance with the manufacturer's manual. The X-ray method shall be used in case of dispute. Evaluate for compliance with 3.1.2.

4.3.1.2 Chromium (hexavalent) content. Add 5 ml of 25 percent aqueous KOH (potassium hydroxide) to 0.5 g of the extracted pigment contained in a centrifuge tube. Agitate by shaking and centrifuge. A yellow color in the supernatant liquid indicates the presence of hexavalent chromium. If the results of the above test are inconclusive, then use the procedure in ASTM D 3718 to test for chromium content. Evaluate results for compliance with 3.1.2.

4.3.2 Condition in the container. Before stirring the contents of the container in which the material was originally packaged, check for evidence of biological growth and corrosion. Then lower a spatula into the container and determine whether the paint has livered or developed hard settling. Disperse the paint with the spatula for 5 minutes and examine for compliance with 3.2.1.

4.3.3 Appearance. Draw down the paint on a clear glass panel to a wet firm thickness of 0.33 mm (0.013 in), and allow to dry for 24 hours at standard conditions. Evaluate for conformance with 3.2.2.

4.3.4 Accelerated package stability. Fill a 550 mL (1 pint) resin-lined friction-top can with the sample. Ensure that the bulk sample from which the cans are filled is well stirred and uniform, that the containers used are clean, and that the lids are applied promptly to the cans to prevent evaporation losses. Store at a temperature of 52°C for 2 weeks. Evaluate following the procedure in ASTM D 1849, except allow hand stirring for