标准号:ASTM D4989-1990a(1999)e1
英文标准名称:Standard Test Method for the Apparent Viscosity (Flow) of Roofing Bitumens Using the Parallel Plate Plastometer
发布日期:1999/12/31 12:00:00
实施日期:1999/12/31 12:00:00
国际标准分类号:91.100.50 (Binders. Sealing materials)
适用范围: 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.