Bitumen is classified by the depth to which a standard needle will penetrate under specified test conditions.
This "pen" test classification is used to indicate the hardness of bitumen, tower penetration indlcatlnq harder bitumen.
Specifications for penetration graded bitumen's normally state the penetration range for a grade, e.g. 50/70.
Other tests are used to classify the bitumen for specification purposes, such as softening point, solubility, flash point etc.
|GRADES BITUMEN STANDARD|
|Penetration @ 250C, for 5 Sec||40/50||60/70||80/100||85/100||120/150||200/300||D-5|
|Flash Point 0F||450||450||450||450||450||350||D-92|
|Ductillity @ 25 (0C) -cm/min||100||100||100||100||100||100||D-113|
|Solubility in Trichloroethylene||99||99||99||99||99||99||D-2042|
|Retained penetration after thin film oven test||55+||52+||47+||47+||42+||37+||D-175|
|Ductility @ 25 (0C) -cm/min after thin oven test||-||50||75||75||100||100||D-113|
|Package||1000 kg/500 kg Metable Jumbo bags loaded in Containers.|