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Bitumen standards & Grades

Standardizing Bodies

In different regions and countries, different Standards and Grading systems are used for determining the quality of petroleum bituminous Binders. The most recognized standards for petroleum bitumen are published by

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European Committee for Standardization (CEN)
- Deutsche Industrie Norm (DIN EN)
- Association Française de Normalisation (AFNOR – NF EN)
- BSI Standards – the UK’s National Standards Body (NSB – BS EN)
American Society for Testing and Materials (ASTM)
American Association of State Highway and Transportation Officials (AASHTO)
South African Standard Organization (SABS)
Standards Australia (AS)

Most Commonly Used Bitumen Specifications

Standard Petroleum Bitumen Grades

ASTM D 946 and AASHTO M 20 (Penetration @ 25°C)
ASTM D 3381 and AASHTO M 226 (Viscosity @ 60°C)
ASTM D 6373 and AASHTO M 320 (PG-Graded Binder)
EN 12591 (Penetration @ 25°C) → NF EN; BS EN; DIN EN; etc.
AS 2008 (Viscosity @ 60°C)
SABS 307 (Penetration @ 25°C; Viscosity @ 60°C after RTFOT)
IS 73 (India) changed in 2006 from PEN grades to VG Grades (based on Viscosity @ 60°C); however, CRMB modified bitumen is still graded based on penetration.