Definition of Oxidized Bitumen 75/35

Oxidized bitumen 75/35 (also known as blown asphalt 75/35 and blown bitumen 75/35) is semi solid grade of pure petroleum bitumen manufactured by air blowing them through an asphalt flux. Oxidized bitumen 75/35 is created from petroleum bitumen which is made by blowing grade 60/70 bitumen by hot air. The numbers 75/35 relate to the midpoint of the material’s softening point and penetration respectively. The softening point value is the degrees Centigrade measured by the Ring and Ball method as determined by ASTM D36. The penetration value is in 1/10 mm as determined by IP49 or ASTM D5.

Bitumen Malaysia guarantee the quality of our oxidized bitumen 75/35 with the arrangement of the international inspector to check quality and quantity of the oxidized bitumen 75/35 during the loading to the vessel and controlling the production by QC by batch test report before shipping. Bitumen Malaysia guarantees the quality to meet with ASTM standard.

Uses of oxidized bitumen 75/35

Oxidized bitumen 75/35 is used in the chemical, fuel, paints, lacquers, varnishes, paper-pulp-board, textile processing, road construction, pavement, crack seals and repairs, civil works, roofing, construction industries; sealing and insulating buildings, adhesive, construction materials additive, dust-binding, insulating and impregnating agent, and also to manufacture rubber and plastic products. Oxidized bitumen 75/35 products are also used in asphalt-based paints for corrosion protection of metals, in lining public works structures, adhesives in electrical laminates, base for synthetic turf. 

Typical uses for oxidized bitumen 75/35 are for water-proof application and corrosion resistance for pipe coating, Portland cement pavement, hydraulic applications, paint manufacturing, caulking, mastics, and damp proofing. This grade of bitumen can be used for insulation and isolation in bitumen membrane sheets. It is also used in the automobile industry for car undercoating as it is proven to be an excellent water-proofing, dust proofing and also noise proofing material.

Application of oxidized bitumen 75/35

The oxidized bitumen 75/35 should be heated double temperature against the softening point to support have flow and viscosity. To use oxidized bitumen 75/35, surfaces must be dry, clean and after loose particles, formwork, curing products, irregularities, slurries, etc.

Storage and handling of oxidized bitumen 75/35

Oxidized bitumen 75/35 has 10 years validity with multi-time heating and cooling. Please refer to MSDS for more information.

Packing of oxidized bitumen 75/35

A few type of packing is available for customer’s purpose and conveniences. Bitumen Malaysia manufactures oxidized bitumen 75/35 and packed different types of packaging including in Kraft bags, meltable plastic bags, drums, and bulk. Oxidized bitumen 75/35 is a penetration-grade bitumen, which is blown by hot air in a controlled process until the desired specification is reached. Bitumen Malaysia can supply oxidized bitumen in any grade and are designated by two numbers to show the softening point and penetration ranges. The bitumen grade 75/35 means the softening point is 75 °C and penetration is 35 desi millimeters. They are produced in compliance and conformity with ASTM standard and meets the following specification.

Specification of oxidized bitumen 75/35
Bitumen 75/35Test methodUnitSpecification
Specific gravity @25/25 °CASTM D70(Kg/m3)1.05 approx.
Penetration @ 25 °CASTM  D5mm/1030/40
Softening point °CASTM  D36°C70/80
Loss on heating (wt) %ASTM  D6Wt. %0.2 max
Flashpoint °CASTM D92°C250 min
Solubility is CS2 (wt) %ASTM  D4Wt. %99.5 max
Spot testA.A.S.H.T.O 102Negative
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