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ASTM E 707 : 1990 : R1996

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Skid Resistance Measurements Using the North Carolina State University Variable-Speed Friction Tester
Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

12-31-2010

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 04.03, 2006 Measures skid resistance of paved surfaces using North Carolina State University VST, which is pendulum-type with locked-wheel smooth rubber tire. Directs water at selected velocity along surface friction between tire and pavement measured from energy lost in pendulum.

1.1 This test method covers the measurement of skid resistance of paved surfaces or laboratory-prepared specimens using the North Carolina State University Variable-Speed Friction Tester.

1.2 The Variable-Speed Friction Tester (VST) is a pendulum-type tester with a locked-wheel smooth rubber tire at its lower end. A stream of water at a selected water test velocity is directed by a nozzle along the specimen surface in the path of contact between the locked-pendulum tire and the specimen. The friction between the tire and the specimen is measured from the energy lost in the pendulum. The tester is suitable for field tests on pavement surfaces as well as laboratory use (see Note 1).

1.3 The values measured, VSN (variable-speed (tester) number), represent the frictional properties obtained with the apparatus and procedures stated herein and do not necessarily agree or correlate directly with those obtained by other skid-resistance measuring methods.

Note 1—Uneven pavement surfaces in the field may provide inaccurate VSN measurements. Extreme care should be taken when using the VST in the field.

1.4 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.

Committee
E 17
DocumentType
Test Method
Pages
5
ProductNote
Reconfirmed 1996
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy

ASTM E 660 : 1990 : R2015 Standard Practice for Accelerated Polishing of Aggregates or Pavement Surfaces Using a Small-Wheel, Circular Track Polishing Machine

ASTM E 274 : 2006 Standard Test Method for Skid Resistance of Paved Surfaces Using a Full-Scale Tire

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PDF - English
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