Oxidized Bitumen / Blown Asphalt 90/40

BAKHTAR Bitumen Blown asphalt 90/40 (oxidized bitumen 90/40, blown bitumen 90/40) is a Semi Solid grade of pure petroleum bitumen which is manufactured by blow of hot air through bitumen flux. Blown asphalt 90/40 is based on petroleum bitumen made by blowing of  very hot air to bitumen 60/70. The softening point value is the degrees Centigrade measured by the Ring and Ball method as determined by ASTM D36 regulations and standards. The penetration value is in 1/10 mm as determined by IP49 or ASTM D5 Standards.
Oxidized Bitumen / Asphalt is a solid or semi-black solid material and gradually liquid when heated, oxidized asphalt is predominant content bitumen, asphalt, molten (oils) and aromatic resins. The oxidized asphalt or blown asphalt is manufactured in various softening point and penetration grades.
BAKHTAR BITUMEN company guaranties the quality of BAKHTAR Bitumen blown asphalt 90/40 and is ready to prove this quality assurance by inspection of international inspectors to check quality and quantity of the blown asphalt 90/40 to be in conformity with ASTM regulations and standards before loading and also during production.

Where to use blown asphalt (oxidized bitumen) 90/40

 BAKHTAR Bitumen BLOWN ASPHALT 90/40 is a type of bitumen obtained from crude oil refining and then subjected to an oxidation process with a catalyst by manipulating hot air blow. It is used in hot mix supply solution using several layers of product, but it is mainly applied in 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, bituminous mastic and many more similar industries.

Blown asphalt 90/40 / oxidized bitumen 90/40 is applied in the chemical, fuel, paints, lacquers, varnishes, paper-pulp-board, textile processing, road construction, pavement, crack seal and repairmen, civil works, roofing, construction industries; sealing and insulating buildings, adhesive, construction materials additive, dust-binding, insulating and impregnating agent, make rubber and plastic products. The asphalt 90/40 products are also for paving and for corrosion protection of metals, in lining public works structures, adhesives in electrical laminates, base for synthetic turf, typical uses for asphalt 90/40 used also for water-proof application and corrosion resistance for pipe coating, Portland cement pavement, hydraulic applications, paint manufacturing, caulking, mastics, and damp proofing. Blown asphalt 90/40 is utilized in insulation and isolation bitumen membrane sheet. Also, Car undercoating Automobile industry is especially required for Blown Asphalt. Vehicle undercoating material is from Bitumen. Bitumen provides excellent waterproof, dustproof and noise proof for automobile undercoating industry.

How to Apply blown asphalt 90/40

BAKHTAR Bitumen blown asphalt 90/40 must be heated with double temperature against the softening point to make it have flow and viscosity. Before using oxidized bitumen 90/40, surfaces must be dry, clean and free from loose particles, formwork, curing products, irregularities, slurry, and any dirt.

Storage Conditions of blown asphalt 90/40

BAKHTAR Bitumen guarantees its Blown asphalt 90/40 for the period of 10 years in the condition of  multi-time heating and cooling situation, please refer to MSDS standards for further information.

Packing of blown asphalt 90/40

BAKHTAR Bitumen can supply Different types of packing for its products based on the customer needs and requirements. BAKHTAR Bitumen is one of the main manufacturers of oxidized bitumen 90/40 in various packing including Kraft bag, meltable plastic bag, drum, and bulk blew asphalt 90/40 from penetration grade bitumen, which is blown by hot air in a controlled process until the desired specification is reached. BAKHTAR Bitumen Blown asphalt 90/40 can be supplied in any packing and is categorized by two numbers which indicate the softening point and penetration ranges. The asphalt grade 90/40 means the softening point is 90°c and penetration is 40 desi millimeter that is produced in compliance and conformity with ASTM standard and meets the following specification.

BAKHTAR Bitumen Specification of blown asphalt 90/40

Analysis asphalt 90/40

Bitumen 90/40

Test method

Unit

Specification

Specific gravity @25/25 C

ASTM D70

(Kg/m3)

1.05 approx.

Penetration @ 25°c

ASTM  D5

mm/10

35/45

Softening point °c

ASTM  D36

°C

85/95

Ductility @25 °c

ASTM  D113

Cm

5.5min

Loss on heating(wt) %

ASTM  D6

Wt. %

0.2 max

Flashpoint c

ASTM D92

°C

250 min

Solubility is CS2(wt) %

ASTM  D4

Wt. %

99.5 max

Spot test

A.A.S.H.O.T102

Negative