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ASTM D4989-90a(2008)

Current Reaffirmation

Standard Test Method for the Apparent Viscosity (Flow) of Roofing Bitumens Using the Parallel Plate Plastometer

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1.1 This test method covers the measurement of apparent viscosity of roofing bitumen by means of a parallel plate plastometer. This test method is applicable for a viscosity range from 102 to 109 Pa·s (103 to 1010 poises). See Note 1.

Note 1—This relatively simple test method of measuring viscosity uses pre-determined arbitrary shear stress levels. Since roofing bitumens are non-Newtonian, other viscosity test methods may give different results.

1.2 The values stated in SI units are regarded as standard. The inch-pound units 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.

This test method deals with the standards for the measurement of apparent viscosity of roofing bitumen by mean of a parallel plate plastometer. This method involves measuring viscosity using pre-determined arbitrary shear stress levels. The method involves molding the sample into a disc of specified dimensions, heating it to a selected temperature and placing it between the plates of a pre-heated apparatus and pressing under the standard conditions for a measured time.


SDO ASTM: ASTM International
Document Number D4989
Publication Date May 1, 2008
Language en - English
Page Count 4
Revision Level 90a(2008)
Supercedes
Committee D08.03
Publish Date Document Id Type View
May 1, 2008 D4989-90AR08 Reaffirmation
May 1, 2004 D4989-90AR04 Reaffirmation
March 10, 1999 D4989-90AR99E01 Reaffirmation