Aktivní norma | Vydána: 01.01.2021

ASTM D4989/D4989M-90a(2021)

Standard Test Method for Apparent Viscosity (Flow) of Roofing Bitumens Using the Parallel Plate Plastometer (Includes all amendments and changes 1/6/2021).

Dostupné jazyky: Anglicky

Dostupné provedení: Online zabezpečené PDF, Tištěné

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Podrobné informace

Označení: ASTM D4989/D4989M-90a(2021)

Datum vydání: 01.01.2021

Stran: 4

Země: Americká technická norma

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Anotace

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.

Keywords:
apparent viscosity, bitumen, flow, parallel plate, plastometer, viscosity,, ICS Number Code 91.100.50 (Binders. Sealing materials)

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