Oxidized bitumen 90/40

Oxidized bitumen 90/40

Oxidized bitumen 90/40

Bitumen  for producing a road topping, road topping and method for the production of oxidized bitumen 90/40 or asphalt. The invention firstly relates to oxidized bitumen 90/40 or asphalt for the production of road surfaces. Road surfaces are very widely produced in the form of asphalt or a mixture of bitumen with aggregates, such as sand, gravel, grit (round or crushed) or the like. One aim in a road surface is to achieve high wear resistance. Furthermore, the deformation tendency should be low in order that unevenness, such as wheel tracks or the like, if possible does not occur, is slight or only occurs after a long period of use.

Storage of bitumen 90/40

All bitumens should be stored in tanks specifically designed for the purpose. In order to minimise the possible hardening of the oxidized bitumen 90/40 during storage, certain aspects of the design of the tank should be considered. Bitumen storage tanks should be fitted with automatic level indicators together with low and high level alarms to avoid having to dip manually for a reading. Such an approach avoids exposing the hot heater tubes to a potentially combustible or explosive atmosphere should the bitumen level fall below that of the heater tubes. Automatic level control also ensures that the tank is not overfilled. Regardless of whether a high level alarm is fitted, a maximum safe filled level for the tank should be predetermined, taking into account the effects of thermal expansion of the bitumen in the tank. Before ordering additional bitumen, it is essential to check that the ullage in the tank is capable of taking the delivery without exceeding the maximum safe working level. Every tank should be clearly labelled with the grade of bitumen it contains. When the grade of bitumen in a tank is changed, it is important to ensure that the tank is empty and relabelled before the new grade is delivered.

Application of bitumen 90/40

Bitumen using for isolation and concrete surface coating, pipe coating, asphalt shingle, bottom sealing of carpet, paint and primer, mastic and membrane roof sheet, laminate and adhesive, roofing and flooring and enamel. Also, Car undercoating Automobile industry is specially required for Blown Asphalt. Vehicle undercoating material is based on Bitumen. Oxidized bitumen 90/40 provides excellent waterproof, dust proof and noise proof for automobile undercoating.

Analyze of bitumen 90-40




Specific gravity @25/25 C

1.05 approx.


Penetration @25C



Softening point C






Loss on heating (wt)%



Flash point C



Solubility in CS2 (wt)%



Specific gravity @25/25 C

1.05 approx.