ASTM D868-10(2020) pdf free download.Standard Practice for Determination of Degree of Bleeding of Traffic Paint.The size of this pdf file is 1.09M.
ASTM D868-10(2020) describes test procedures for determining the degree of bleeding of traffic or pavement marking paints. A specific formulation for a solventborne traffic paint formulation is included as a potential bleeding reference control.
Solvents in a traffic paint may cause bleeding of pavement constituents into the traffic marking, thereby rendering the traffic marking less effective as a lane or directional indicator. This practice describes how to prepare a panel of the coating to be tested and a reference panel coated with a specific solventborne traffic paint to be used as a control for evaluation.
Measure color in accordance with Test Method E1347 in the non-bleed reference area and in the area where bleeding is allowed to occur. Make these measurements in at least three positions in both the non-bleed reference area and in the area where bleeding is allowed to occur. Determine the ratio between the CIE L* value measured for the area where bleeding is allowed to the CIE L* value measured in the non-bleed reference area. Calculate the average of these ratios.
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