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ASTM D7377-07

Historical Revision

Standard Practice for Evaluating the Water Wash-Off Resistance of Traffic Paints using a Water Faucet

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1.1 A newly applied traffic paint film may be exposed to hard rain shortly after application. This practice was designed to simulate that condition and covers determination of the water wash-off resistance of an applied traffic paint film under controlled conditions. This test can be used to compare conventional and fast-dry traffic paints and the binders used in them for their relative ability to withstand heavy rain soon after application on roadway surfaces.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


After waterborne traffic paints are applied to a road pavement, it is important that they be sufficiently coalesced or cured so they will not be removed by rain. This practice can be used to determine the relative performance of binders and other components within traffic paint for their effect on the water-wash off resistance of the coating. Some key elements of the coating that may affect water-wash-off performance are the quality and type of latex binder, the dry time of the coating (often conducted by Test Method D 711), pigment volume concentration (PVC), and the relative water sensitivity of additives (for example, pigment dispersants, surfactants) in the coating.

SDO ASTM: ASTM International
Document Number D7377
Publication Date July 1, 2007
Language en - English
Page Count 3
Revision Level 07
Supercedes
Committee D01.44
Publish Date Document Id Type View
June 1, 2009 D7377-09 Revision
Feb. 1, 2008 D7377-08 Revision
July 1, 2007 D7377-07 Revision
Dec. 1, 2023 D7377-09R23 Reaffirmation
Sept. 1, 2018 D7377-09R18 Reaffirmation
Nov. 1, 2013 D7377-09R13 Reaffirmation