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Performance-Grades-PG70-PG-70-16

Performance Grades

PG70 – PG-70-16

 

Related Category:

Cutback RC 800

Rapid Curing 800 RC800 a combination of penetration grade asphalt cement and a diluent or cutter highly rapid in its volatility making it easier to apply. Cut back RC800 is compliant with ASTM standard for cut back asphalt.

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Bitumen 10/20

Bitumen 10/20 is commonly used for the production of hot mix asphalt for the base and wearing courses.

»

Performance Grade Bitumen Advantages

1.  Common tests are conducted at a single test temperature which is 25°C in penetration and 60°C in viscosity test, which means that they cannot give any details about how the bitumen would behave in low or high temperatures. Superpave grading indicates a working temperature range of binder and therefore, helps with choosing the best type according to the condition each project demands.

 

2. Empirical methods such as viscosity and penetration grading systems were developed based on old experiences and can be applicable if those conditions still exist. But,climatic and current traffic conditions are rapidly changing and past experiences can no longer be defining criteria. In the PG system, it is possible to use actual traffic volumeand vehicle speed which represents the duration of loads are applied.

 

3. Because of the visco-elastic properties of bitumen, the rate of load application and temperature have a great effect on its behavior. Although the behavior of bitumen in lower loading rates corresponds to that of higher temperatures, none of the other grading systems doesn’t take the rate of load into account except for Superpave. While Superpave can be easily used for both unmodified and modified bitumen, conventional methods areused only for unmodified bitumen types.

 

4. Conventional methods ignore the long-term aging of binders and its behavior. But Superpave takes both long-term aging using with the pressure aging vessel (PAV) and short-term aging using the rolling thin film oven test (RTFOT) into account.

 

5. Bitumen properties indicated at different temperatures contribute to resistance to the distresses in a different level. Bitumen contributing in a better rutting resistance is measured at maximum pavement temperatures and which leads to a more elastic and stiffer binder. Bitumen contributing to fatigue resistance is the most crucial at average pavement temperatures and it requires asofter bitumen while it still favors an elastic binder. Bitumen contribution to thermal cracking is sensitive atminimum pavement temperatures and it demands a less elastic and soft bitumen.

Specification

Description
Unit
Value
Test Method
Average 7-day Max. Pavement Design Temp
°C
< 70
ASTM D6373
Minimum Pavement Design Temperature
°C
< -16
ASTM D6373
ORIGINAL BINDER
Flash Point Temp, T48: Minimum
°C
230
ASTM D92
Viscosity Max. Test Temperature
Pa S
3
ASTM D4402
Dynamic Shear, TP5:Min 1.00 kPa test temp@10rad/s
KPa
1.00 Min
ASTM D6373
ROLLING THIN FILM OVEN (T240)
Mass Loss, Maximum, Percent
%
1.00 Max
ASTM D6
Dynamic Shear, TP5:Min 2.20 kPa test temp@10rad/s
KPa
2.20
ASTM D6373
PRESSURE AGING VESSEL RESIDUE (PPI)
PAV Aging Temperature
100/110
Dynamic Shear, TP5:Max 5000 kPa test temp@10rad/s
KPa
5000
PHYSICAL HARDENING REPORT
Creep Stiffness, TP1:S, Max 300.0MPa, Min0.300 test temp@60s
°C
-6
ASTM D6648
Direct Tension, TP3: Failure Strain, Min 1.0% test temp@1.0mm/min
°C
-6
ASTM D6723

Safe Handling and Storage​

  • Use Personal Protective Equipment (PPE’s) when handling (i.e. gloves, eye protectors, etc.
  • Maintain safe heating temperatures when using this product.
  • Avoid contact with skin, eyes and clothing.
  • Avoid breathing vapor, spray or mists when applying.

Packaging

Penetration graded Bitumen PG70-10 is available in 0.6 mm thickness, 180 kg net weight drums, 95 cm height and 45 cm diameter (+/- 3 kg operational tolerance).

Drums

Keep drums in a cool, well-ventilated place.​