Chinese Standard Bitumen
等级 – AH70
Petra Oil’s AH-70 is a premium penetration grade bitumen engineered for superior performance in high-temperature regions and heavily trafficked areas. With a penetration value of around 70 dmm, AH-70 is slightly softer than AH-50, offering enhanced flexibility and resilience, particularly valuable for environments subject to both thermal variation and mechanical stress.
AH-70 provides excellent cohesion and viscoelastic behavior, ensuring that pavements can endure both thermal expansion and heavy axle loads. This makes it an ideal choice for road construction projects in hot, arid climates and for areas with frequent braking and accelerating traffic such as city arterials and industrial zones.
Manufactured under strict quality standards including ASTM D946 and AASHTO M20, AH-70 offers consistent performance in mixing, compaction, and long-term pavement durability. It delivers optimal adhesion to aggregates and resistance to oxidation and weathering, extending the life of asphalt surfaces.
等级 – AH50
AH50 Bitumen is high quality asphalt, derived from crude petroleum refining. AH70 Bitumen is dark in color and possesses waterproofing and adhesive properties. It is substantially non-volatile and softens gradually when heated.
等级 – AH90
AH90 Bitumen is high quality asphalt, derived from crude petroleum refining. AH70 Bitumen is dark in color and possesses waterproofing and adhesive properties. It is substantially non-volatile and softens gradually when heated.
Key Specifications:
- Penetration Grade: 70 (±5 dmm at 25°C)
- Softening Point: ~45–52°C
- Ductility: >100 cm at 25°C
- Compliance: ASTM D946 / AASHTO M20
- Binder Type: Penetration Grade Bitumen
Main Applications:
- Urban Roads and Streets: Offers flexible, crack-resistant performance under thermal and traffic stress.
- Parking Lots and Service Roads: Ideal for pavements subject to frequent vehicle stops and slow movement.
- Suburban and Secondary Roads: Cost-effective solution with reliable long-term behavior.
Key Benefits:
- Enhanced Flexibility: Reduces cracking in pavements subject to daily temperature swings.
- Reliable High-Temperature Performance: Maintains structural integrity in hot climates.
- Extended Pavement Service Life: Lowers repair frequency and enhances road usability.
- Excellent Adhesion and Weather Resistance: Promotes durable, long-lasting pavement layers.
Specification
Properties |
Method |
Min |
Max |
Unit |
|---|---|---|---|---|
Penetration @ 25°C
|
T0604
|
40
|
60
|
d/mm
|
PI (Penetration Index)
|
T0604
|
-1.5
|
1
|
|
Dynamic Viscosity @ 60°C
|
T0620
|
180
|
Pa's
|
|
Ductility at 15°C 5cm/min
|
TO605
|
100
|
..
|
|
Ductility @ 10°C 5cm/min
|
TO605
|
25
|
..
|
mm
|
Softening Point
|
TO606
|
46
|
54
|
C
|
Flash Point
|
TO611
|
260
|
C
|
|
Wax Content
|
TO615
|
2
|
%
|
|
Density at 15 °C
|
T0603
|
1.01
|
1.06
|
g/cm3
|
Solubility in Trichlorethylene
|
T0607
|
99.5
|
%
|
Thin Film Oven Test
Loss on Heating (Rotating
Membrane) |
TO609/T0610 |
+0.8 |
%Mass |
|
|---|---|---|---|---|
Retained Penetration
|
T0604
|
57
|
% of Original
|
|
Ductility of Residue at 10°C
|
T0605
|
5
|
cm
|
|
Ductilitv of Residue at 10°C
|
T0605
|
20
|
cm
|
