ASTM-D7538 Standard Practice for Evaluating the Water Wash-Off Resistance of Traffic Paints Using an Atomizing Spray Device

ASTM-D7538 - 2009 R13 EDITION - CURRENT
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Standard Practice for Evaluating the Water Wash-Off Resistance of Traffic Paints Using an Atomizing Spray Device
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Scope

1.1 A newly applied traffic paint film may be exposed to rain of varying intensities shortly after application. Practice D7377 describes a practice for evaluating the water wash-off resistance of traffic paints to a hard rain using a steady stream of water from a faucet at a rate of approximately 5.7 L per min. Practice D7538 is a similar practice that describes the use of an adjustable nozzle atomizing spray device to deliver a spray of water that simulates rain rates from approximately 0.05 to 0.5 L per min. This test can be used to compare conventional and fast-dry traffic paints for their relative ability to withstand rain soon after application on roadway surfaces.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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.

Keywords

rain resistance; traffic paint; water spray; water wash-off test; ICS Number Code 93.080.20 (Road construction materials)

To find similar documents by ASTM Volume:

06.02 (Paint -- Products and Applications; Protective Coatings; Pipeline Coatings)

To find similar documents by classification:

93.080.20 (Road construction materials Including asphalts, road pavements, etc.)

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Document Number

ASTM-D7538-09(2013)

Revision Level

2009 R13 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Nov. 15, 2013

Document Type

Practice

Page Count

3 pages

Committee Number

D01.44