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Penetration Bitumen Grade 70/90


Bitumen grade 70/90 is a premium brand that is dark brown or black color similar to cement-shape semi-solid or viscous liquid form produced by the non-destructive refining of crude oil during petroleum refining.
The exact chemical composition of bitumen is dependent on the chemical complexity of the original crude oil and the manufacturing process. Bitumen Grade 90/130 has mechanical properties as below table.

Properties specification Test Method
70# 90#
Penetration (25°C, 100g, 5s), 0.1mm 60-70 80-100 ASTM D5 / GB T4509
Ductility (25°C), cm ≥150 ≥150 ASTM D113 / GB T4508
Softening Ponit, °C 49-56 45-52 ASTM D36 / GB T4507
Solubility (in C2HC13), % ≥99 ≥99 ASTM D4 / GB T11148
Flash Point (Open Cup Method), °C ≥260 ≥260 ASTM 92 / GB T267
Wax content, % ≤3 ≤3 SH T0425

 





Penetration Bitumen Grade 50/70:

Bitumen grade 50/70 is a premium brand that is dark brown or black color similar to cement-shape semi-solid or viscous liquid form produced by the non-destructive refining of crude oil during petroleum refining.
The exact chemical composition of bitumen is dependent on the chemical complexity of the original crude oil and the manufacturing process. Penetration bitumen grade 50/70 has properties of 50~70 desimilimeter and softening point 46~58 Deg.C.


Application of bitumen 50/70:
bitumen penetration grade 50/70 is hard penetration grade bitumen using as paving grade bitumen suitable for road construction and repair also for the production of asphalt pavements with below technical specification. This grade of bitumen is mainly used in the manufacture of hot mix asphalt for bases and wearing courses.

Bitumen 50/70 is Elastic and Plastic:
When one takes a thread of bitumen 70/100 from a sample and stretches or elongates it, it is the power to return to a length preparing to its original length eventually. For many bitumen 50/70 this technique might take longer than others.


Data Sheet of bitumen 50/70:

Bitumen 50/70 Specification Test method
Specific Gravity @25/25cg 1.01/1.06 D-70
Penetration @25 Deg.C 50/70 D-5
Softening point, Ddeg.C 46/58 D-36
Ductility @ 25 Deg.C 100min D-113
Loss on heating (WT) % 0.2 max D-6
Drop in penetration after heating % 20 max D-6, D-5
Flash point, Deg.C 250 min D-92
Solubility IS CS2(WT) % 99.5 max D-4
Spot test negative A.A.S.H.O.T102




Bitumen Classification Paving grade Bitumens are categorized according to viscosity (degree of fluidity) gradings.
The higher the grade, the stiffer the bitumen.
Most high performing roads in Australia are built and maintained using bitumen because it is durable and has exceptional waterproofing and adhesive properties.
Bitumens used in road construction and maintenance are refined and blended to meet strict road engineering requirements and industry specifications.

the Australian Standard are determined by Viscosity measured at 60°C Pa.s.

Bitumen grades for Australia market are as below:

Class 170

Class 240

Class 320

Class 450

Class 600



Australian Bitumen Grades are available in New Steel Drums to Australia.
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