ASTM D7377-09
(Practice)Standard Practice for Evaluating the Water Wash-Off Resistance of Traffic Paints using a Water Faucet
Standard Practice for Evaluating the Water Wash-Off Resistance of Traffic Paints using a Water Faucet
SIGNIFICANCE AND USE
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 D 711), pigment volume concentration (PVC), and the relative water sensitivity of additives (for example, pigment dispersants, and surfactants) in the coating.
SCOPE
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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D7377 − 09
StandardPractice for
Evaluating the Water Wash-Off Resistance of Traffic Paints
1
using a Water Faucet
This standard is issued under the fixed designation D7377; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D4414 Practice for Measurement of Wet Film Thickness by
Notch Gages
1.1 Atrafficpaintfilmfreshlyappliedtoaroadway,airstrip,
or parking lot may be exposed to rain of varying intensities
3. Terminology
shortly after application. This practice was designed to deter-
mine the relative water wash-off resistance of an applied traffic 3.1 Definitions:
paint film under controlled laboratory conditions using a water
3.1.1 conventional waterborne traffıc paint, n—an aqueous
faucet to simulate a heavy rain. This laboratory practice can
traffic paint that uses a conventional (non-fast-dry) latex
also be used to compare conventional and fast-dry waterborne
binder.
traffic paints and the effects of binders and other components in
3.1.1.1 Discussion—Typical no-pick-up dry times for con-
traffic for their relative ability to withstand a heavy rain soon
ventional traffic paints by Test Method D711 are 20 to 45 min.
after application.
These paints are often used for zone marking of parking lots
and garages.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
3.1.2 durable fast-dry waterborne traffıc paint, n—an aque-
only.
ous traffic paint that uses a durable fast-dry latex binder.
1.3 This standard does not purport to address all of the
3.1.2.1 Discussion—Air or airless spray application on
safety concerns, if any, associated with its use. It is the
roadways is typically 0.65 mm (25 mils) wet or about 0.41 mm
responsibility of the user of this standard to establish appro-
(16 mils) dry. The range of application for durable waterborne
priate safety and health practices and determine the applica-
paints is 0.56 to 0.89 mm (22 to 35 mils) wet, but sometimes
bility of regulatory limitations prior to use.
durable paints are striped at standard line thickness. Typical
no-pick-up dry times by Test Method D711 for durable paints
2. Referenced Documents
applied at standard line thickness are 5 to 8 min.
2
2.1 ASTM Standards:
3.1.3 effective water wash-off dry time, n—the traffic paint
D562 Test Method for Consistency of Paints Measuring
dry time required for no visible loss of coating when conduct-
KrebsUnit(KU)ViscosityUsingaStormer-TypeViscom-
ing the water wash-off Standard Practice.
eter
3.1.4 fast-dry waterborne traffıc paint, n—an aqueous traffic
D711 Test Method for No-Pick-Up Time of Traffic Paint
paint that uses a fast-dry traffic latex binder.
D823 Practices for Producing Films of Uniform Thickness
3.1.4.1 Discussion—These paints are sometimes also re-
of Paint, Varnish, and Related Products on Test Panels
ferred to as fast-hardening since they still may contain a
D1005 Test Method for Measurement of Dry-Film Thick-
substantial amount of moisture even though they feel dry.
ness of Organic Coatings Using Micrometers
Typical no-pick-up dry times byTest Method D711 for fast-dry
D1212 Test Methods for Measurement of Wet Film Thick-
traffic paints are <10 min.
ness of Organic Coatings
3.1.5 standard line fast-dry waterborne traffıc paint, n—an
aqueous traffic paint that uses a standard fast-dry latex binder.
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
3.1.5.1 Discussion—Air or airless spray application on
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.44 on Traffic Coatings.
roadways is typically 0.38 mm (15 mils) wet or about .223 mm
CurrenteditionapprovedJune1,2009.PublishedJuly2009.Originallyapproved
(9 mils) dry. Typical no-pick-up dry times for standard line
in 2007. Last previous edition approved in 2008 as D7377 - 08. DOI: 10.1520/
traffic paints by Test Method D711 are 5 to 8 min.
D7377-09.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.1.6 waterborne traffıc paint, n—an aqueous traffic paint
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
(usually white or yellow) containing either a conventional or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. fast-dry latex binder.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D7377 − 09
3.1.7 water wash-off resistance, n—the resistance of a traffic 6.13
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D7377–08 Designation:D7377–09
Standard Practice for
Evaluating the Water Wash-Off Resistance of Traffic
PaintsEvaluating the Water Wash-Off Resistance of Traffic
1
Paints using a Water Faucet
This standard is issued under the fixed designation D 7377; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1A newly applied traffic paint film 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 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
rain soon after application on roadway surfaces.
1.1 Atraffic 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D 562 Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer
D711 Test Method for No-Pick-Up Time of Traffic Paint
D 823 Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels
D 1005 Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
D 1212 Test Methods for Measurement of Wet Film Thickness of Organic Coatings
D 4414 Practice for Measurement of Wet Film Thickness by Notch Gages
3. Terminology
3.1 Definitions:
3.1.1 conventional waterborne traffıc paint, n—an aqueous traffic paint that uses a conventional (non-fast-dry) latex binder.
3.1.1.1 Discussion—Typical no-pick-up dry times for conventional traffic paints are 20 to 45 min. —Typical no-pick-up dry
times for conventional traffic paints by Test Method D 711 are 20 to 45 min. These paints are often used for zone marking of
parking lots and garages.
3.1.2 durable fast-dry waterborne traffıc paint, n—an aqueous traffic paint that uses a third generation durable fast-dry latex
binder.
3.1.2.1 Discussion—Airorairlesssprayapplicationonroadwaysistypically0.65mm(25mils)wetorabout0.41mm(16mils)
dry.Therangeofapplicationfordurablewaterbornepaintsis0.56to0.89mm(22to35mils)wet,butsometimesthedurablepaints
arealsostripedatstandardlinethickness.Typicalno-pick-updrytimesbyTestMethodD 711fordurablepaintsappliedatstandard
line thickness are 5 to 8 min.
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.44 on Traffic Coatings.
Current edition approved Feb.June 1, 2008.2009. Published March 2008.July 2009. Originally approved in 2007. Last previous edition approved in 20072008 as
D 7377 - 078.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D7377–09
3.1.3 effective water wash-off dry time, n— the traffic paint dry time required for no visible loss of coating when conducting
the water- wash-off Standard Practice.
3.1.4 fast-dry waterborne traffıc paint, n— an aqueous traffic paint that uses
...
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