ASTM D4989 / D4989M - 90a(2014)e1

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

    Active Standard ASTM D4989 / D4989M | Developed by Subcommittee: D08.03

    Book of Standards Volume: 04.04


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    1. Scope

    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 1This 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 either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D140 Practice for Sampling Bituminous Materials

    D312 Specification for Asphalt Used in Roofing

    D450 Specification for Coal-Tar Pitch Used in Roofing, Dampproofing, and Waterproofing

    D2171 Test Method for Viscosity of Asphalts by Vacuum Capillary Viscometer

    D3205 Test Method for Viscosity of Asphalt with Cone and Plate Viscometer


    ICS Code

    ICS Number Code 91.100.50 (Binders. Sealing materials)

    UNSPSC Code

    UNSPSC Code 30121504(Bitumen); 30151505(Roofing membranes)


    DOI: 10.1520/D4989_D4989M

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