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ASTM D7377-09(2023)

Current Reaffirmation

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

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1.1 A traffic paint film freshly applied to a roadway, air strip, or parking lot may be exposed to rain of varying intensities shortly after application. This practice was designed to determine the relative water wash-off resistance of an applied traffic paint film under controlled laboratory conditions using a water faucet to simulate a heavy rain. This laboratory practice can also be used to compare conventional and fast-dry waterborne traffic paints and the effects of binders and other components in traffic for their relative ability to withstand a heavy rain soon after application.

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

1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 After waterborne traffic paints are applied to a road, airstrip, or parking lot pavement, it is important that the paint films be sufficiently hardened, 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 D711), pigment volume concentration (PVC), and the relative water sensitivity of additives (for example, pigment dispersants, and surfactants) in the coating.

SDO ASTM: ASTM International
Document Number D7377
Publication Date Dec. 1, 2023
Language en - English
Page Count 4
Revision Level 09(2023)
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