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ASTM E1911-09a

Historical Revision

Standard Test Method for Measuring Surface Frictional Properties Using the Dynamic Friction Tester

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1.1 This test method covers the procedure for measuring paved surface frictional properties as a function of speed using the Dynamic Friction Tester (DF-Tester).

1.2 The DF Tester consists of a horizontal spinning disk fitted with three spring loaded rubber sliders which contact the paved surface as the disk rotational speed decreases due to the friction generated between the sliders and the paved surface. A water supply unit delivers water to the paved surface being tested. The torque generated by the slider forces measured during the spin down is then used to calculate the friction as a function of speed.

1.3 The DF Tester can be used for laboratory investigations and in the field on actual paved surfaces.

1.4 The values stated in SI (metric) units are to be regarded as standard. The inch-pound equivalents are rationalized, rather than exact mathematical conversions.

1.5 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.

This test method provides a measure of surface friction as a function of sliding speed, either in the field or in a laboratory.

This test method may be used to determine the relative effects of various polishing techniques on materials or material combinations.

The values measured in accordance with this method do not necessarily agree or directly correlate with those obtained utilizing other methods of determining friction properties or skid resistance.

SDO ASTM: ASTM International
Document Number E1911
Publication Date July 1, 2009
Language en - English
Page Count 5
Revision Level 09a
Supercedes
Committee E17.21
Publish Date Document Id Type View
Aug. 1, 2019 E1911-19 Revision
July 1, 2009 E1911-09AE01 Revision
July 1, 2009 E1911-09A Revision
Jan. 1, 2009 E1911-09 Revision
Dec. 1, 2007 E1911-07 Revision
Jan. 10, 1998 E1911-98 Revision
Nov. 1, 2024 E1911-19R24 Reaffirmation
Dec. 10, 2002 E1911-98R02 Reaffirmation