Description of Oxidized Bitumen 90/40

Oxidized bitumen 90/40 (also known as blown asphalt 90/40 and blown bitumen 90/40) is a semi solid grade of pure petroleum bitumen manufactured by air-blowing through an asphalt flux. Special physical properties of its grade can be used in different applications in the construction business. Oxidized bitumen 90/40 is based on petroleum bitumen which is made by oxidized bitumen 60/70 by very hot air. The numbers 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.

Oxidized bitumen is a solid or semi solid material and gradually turn into liquid when heated. Their predominant content is bitumen, asphalt, molten (oils) and aromatic resins. The oxidized asphalt or blown asphalt is produced in different softening and penetration point.

Bitumen Malaysia guarantee the quality of our oxidized bitumen 90/40 with the arrangement of an international inspector to check the quality and quantity of our bitumen 90/40 during the loading to the vessel and controlling the production by QC by batch test report before shipping. We guarantee the quality to meet with ASTM standard.

Uses of oxidized bitumen 90/40

There are many uses of this grade of oxidized bitumen but it is mainly used for industrial applications such as roof felts, waterproofing, roof and floors anti-rust pipe coating, anti-slip layer compound, sound dampening felts, coats for automobile industry, joint filling compounds, sealants and bituminous mastic.

Oxidized bitumen 90/40 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 90/40 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 90/40 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 90/40

The oxidized bitumen 90/40 should be heated double temperature against the softening point to support have flow and viscosity. To use oxidized bitumen 90/40, surfaces must be dry, clean and after loose particles, formwork, curing products, irregularities, slurries, etc.

Storage and handling of oxidized bitumen 90/40

Oxidized bitumen 90/40 has 10 years validity with multi-time heating and cooling. Please refer to MSDS for more information.

Packing of oxidized bitumen 90/40

A few type of packing is available for customer’s purpose and conveniences. Bitumen Malaysia manufactures oxidized bitumen 90/40 and packed different types of packaging including in Kraft bags, meltable plastic bags, drums, and bulk. Oxidized bitumen 90/40 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 90/40 means the softening point is 90 °C and penetration is 40 desi millimeters. They are produced in compliance and conformity with ASTM standard and meets the following specification.

Specification of oxidized bitumen 90/40
Bitumen 90/40Test methodUnitSpecification
Specific gravity @ 25/25 °CASTM D70(Kg/m3)1.05 approx.
Penetration @ 25 °CASTM  D5mm/1035/45
Softening point °CASTM  D36°C85/95
Ductility @25 °CASTM  D113Cm5.5min
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.O.T102Negative