Bitumen penetration grade 60/70 means the penetration value is in the range 60 to 70 at standard test conditions which commonly used as a Paving Grade and it classifies as a semi-hard penetration grade bitumen.
Typical properties for Bitumen Grade 60/70
Here are properties of Bitumen 60/70 which is classified by ASTM D946-09.
|
Description |
Unit |
Limit |
Test Method |
|
Density@25°C |
Kg/m^3 |
1010-1060 |
ASTM D70 or D3289 |
|
Penetration@25°C |
mm/10 |
60-70 |
ASTM D5 |
|
Softening Point |
°C |
49-56 |
ASTM D36 |
|
Ductility@25°C |
cm |
100min |
ASTM D113 |
|
Loss on Heating |
wt% |
0.2max |
ASTM D6 |
|
Drop in Penetration after Heating |
% |
20max |
ASTM D5 |
|
Flash Point |
°C |
232min |
ASTM D92 |
|
Solubility in Trichloroethylene |
wt% |
99.0min |
ASTM D2042 |
|
Spot Test |
--- |
Negative |
A.A.S.H.O.T.102 |
|
Viscosity@60°C |
P |
2000±400 |
ASTM D2171 |
|
Viscosity@135°C |
cSt |
300min |
ASTM D2170 |
Bitumen 60/70 is suitable for road construction and for the asphalt pavements with superior properties. This type of bitumen used in the manufacture of hot mix asphalt for bases and wearing courses and the main usage of this product is used in the road in mild regions. The bitumen is provided during the presses of oxidation of vacuum bottom in bitumen production units. Due to its medium air blowing and penetration, it is used in mild areas.