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Penetration Grade

ASTM D 946 - 40/50, 60/70, 80/100

BS EN 12591 - 35/50, 50/70, 70/100
Penetration Grade Bitumen is generally used in road surfacing, and some industrial applications. Additional processing yields other grades of bitumen products and their application.

Penetration Grade Bitumen Specification (AASHTO M 20 and ASTM D 946)

  Units 40/50 60/70 80/100 100/120 Test Methods
Specific Gravity @25°C - 1.01-1.06 1.01-1.06 1.01-1.05 1.01-1.04 ASTM D-70
Penetration @25°C, 100gm, 5sec 0.1MM 40-50 60-70 80-100 100-120 ASTM D-5
Softening Point, Ring & Ball °C 52-60 49-56 45-52 42-49 ASTM D-36
Ductility @25°C, after TFOT, Min CM 100 100 100 100 ASTM D-113
Loss on Heating, Max %Wt 0.2 0.2 0.5 0.5 ASTM D-6
Drop in Penetration after Heating, Max % 20.0 20.0 20.0 20.0 ASTM D-6 & D-5
Flash Point Cleveland open cup, Min °C 250.0 250.0 232.0 250.0 ASTM D-92
Solubility in CS2, Min %Wt 99.5 99.5 99.5 99.5 ASTM D-4
Organic Matter Insoluble in CS2, Max %Wt 0.5 0.5 0.5 0.5 ASTM D-4
Sport Test - Negative Negative Negative Negative *A.A.S.H.O.T.102
*American association of state highway officials.

Bitumen Specification European Standard (BS EN 12591)

  Units 35/50 40/60 50/70 70/100 100/150 Test Methods
Penetration @25°C, 100gm, 5sec 0.1MM 35-50 40-60 50-70 70-100 100-150 EN 1426
Softening Point, Ring & Ball °C 50-58 48-56 46-54 43-51 39-47 EN 1427
Resistace to Hardening@163°C
- Change in mass, Max %Wt 0.5 0.5 0.5 0.8 0.8 EN 12607-1
- Retained Penetration, Min 0.1MM 53 50 50 46 43 EN 12607-1
- Softening point after hardinging, Min °C 52 49 48 45 41 EN 12607-1
Other properties
Flash Point Cleveland open cup, Min °C 240 230 230 230 230 EN ISO 2592
Solubility in CS2, Min %Wt 99.0 99.0 99.0 99.0 99.0 EN 12592
Kinematic Viscocity @135°C, Min mm2/S 370 325 295 230 175 EN 12595
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