» Bitumen » Penetration » Pen-120-150(ASTM)

Penetration 120-150

Penetration grade bitumen is a straight run bitumen specified by the penetration and softening point test. Penetration bituminous asphalt soften at high temperature and harden at low temperature due to Having thermoplastic property. Penetration grade asphalt is manufactured by vacuum distillation of crude oil. The most common grade is bitumen 60/70 which can be used for many applications. The penetration bituminous asphalt with high penetration  numbers which are soft, mostly used in cold weather conditions and hard bituminous asphalt (low penetration number) can be used for warm weather condition.

 

 

The bitumen penetration grade 120/150 is a standard penetration grade, with penetration between 120 and 150 usually used as paving grade bitumen.Which is moastly used in road construction, asphalt pavement and manufacter of hot-mix asphalt. It designed by it`s penetration range only.


Specification of penetration bitumen 120-150


Test method

Unit

Specification

Specific gravity @ 25°c

ASTM D70

Kg/cm3


1.01/1.05


Penetration  @ 25°c

ASTM D5


mm/10


120/150


Softening point °c

ASTM D36

°C

38 min

Ductility @25 °c

ASTM D113

cm

100 min

Loss on heating(wt.) %

ASTM D6

wt. %

0.5 max

Drop in penetration after heating %

ASTM D5-D6

%

20 max

Flash point °c

ASTM D92

°C

218 min

Solubility is CS2(wt) %

ASTM D4

wt. %

 

99 min

Spot test

A.A.S.H.O.T102


negative