Bitumen Penetration Grade
ASTM Standard – Bitumen 60/70
The Bitumen 60/70 – grade to build roads and highways, bitumen penetration grade 60/70 is frequently employed because to its excellent weather resistance and capacity to function effectively in a variety of temperature ranges. It is also employed as a binder in asphalt concrete mixtures and in the production of bituminous.
Bitumen Grade 60/70 is produced in compliance and conformity to International Standards such as AASHTO M20-70 & ASTM D946, also, meets the following specification requirements.
The penetration grade bitumen has a thermoplastic property which causes the material to soften at high temperatures and to harden at lower temperatures. This unique temperature-viscosity relationship is important when determining the performance parameters such as the adhesion, rheology, durability, and application temperatures of bitumen.
ASTM Bitumen 30/40
Penetration grade bitumen 30/40 is high-quality asphalt, derived from crude petroleum refining. The bitumen has a penetration value between 30 and 40 Deci millimetres
ASTM Bitumen 60/80
Bitumen 60/80 is a hard penetration grade bitumen primarily used in road construction to create durable asphalt pavements and produce hot mix asphalt.
Application
Bitumen 60/70 is commonly used to produce hot mix asphalt for the base and wearing courses. a thinner pavement design Usage: The main common usage of bitumen 60/70 is being used in the manufacturing of hot mix asphalt for the base and wearing courses. Due to its high level of viscosity, it enables a thinner pavement engineering design and an overall 30 percent reduction in the amount of asphalt being applied. 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.
Specification
No |
Description_60/70 |
Unit |
60/70 Grade |
Test Method |
|---|---|---|---|---|
1
|
Specific Gravity @ 25°C
|
Kg/Cm3
|
1.01/1.06
|
ASTM D70
|
2
|
Penetration @ 25°C
|
MM/10
|
60/70
|
ASTM D5
|
3
|
Softening Point °C
|
°C
|
48/56
|
ASTM D36
|
4
|
Ductility @ 25°C
|
CM
|
100 Min
|
ASTM D113
|
5
|
Loss on Heating (wt) %
|
WT %
|
0.2 Max
|
ASTM D6
|
6
|
Drop in Penetration after Heating %
|
%
|
20 Max
|
ASTM D5-D6
|
7
|
Flash Point °C
|
°C
|
250 Min
|
ASTM D92
|
8
|
Solubility in Trichloroethylene (wt) %
|
WT %
|
99.0 Min
|
ASTM D2042
|
9
|
After Thin-Film Oven Test (TFOT)
|
-
|
-
|
ASTM D1754
|
10
|
Retained Penetration
|
%
|
52
|
ASTM D5
|
11
|
Increase In Softening Point
|
C
|
9 max
|
ASTM D 70
|
12
|
Ductility
|
CM
|
50 min
|
ASTM D 113
|
13
|
Loss on Heating (wt) %
|
WT %
|
0.2 Max
|
ASTM D6
|
14
|
Spot Test
|
@
|
Negative
|
AASHOT 102
|
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