Oxidized Bitumen 75/35
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 BLOWN ASPHALT 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.
PROPRTIES OF BITUMEN 75/35
The use of bitumen as such, or as a binder in diverse composite materials, is based on its mechanical properties and on the way these properties depend on the loading time and temperature. Bitumen 75/35 are manufactured in a variety of grades with different mechanical properties to meet the demands of road and industrial applications. For the civil engineer and the industrial bitumen user, it is of considerable value to define the mechanical properties of bitumen in terms that are analogous to the elastic moduli of rigid materials. For the structural design of pavements, it is essential to be able to measure and predict the fundamental mechanical characteristics of paving materials. The stiffness modulus of an asphalt depends on the stiffness modulus of the bitumen and the volume fractions of the different mixture components (aggregates, bitumen, air). The stiffness modulus of bitumen is also a suitable parameter for the breaking properties of the bitumen itself and of the asphalts prepared with it.
RECOMMENDATIONS FOR HANDLING / STORAGE
Heating of packaged bitumen is a critical phase in most of the final uses. Typically, the packaged material is heated and melted in boilers out on site. However, control at the heating phase is very important in terms of health and safety as well as in maintaining the quality of the product. Note must be taken of the maximum safe handling temperature of 230 C and this should not be abused. Bitumen is a poor conductor of heat, consequently, control of the heating phase is of paramount importance. The Oxidized Bitumen material should be broken up prior to placement in the boiler. This exposes a larger surface area to the heat and encourages a more even heating regime. Without the larger exposed surface area, aggressive heating at the base and sides of the boiler may well result in localized overheating, altering the characteristics of the modified bitumen and potentially causing thermal cracking of the bitumen, creating the release of low lash vapors. The flash point of the oxidized bitumen then becomes irrelevant; as these low flash vapors determine the fire risk. Melted bitumen should not be left in the boiler and reheated from cold, as there is then a high potential for localized overheating around the heating area (lack of convection means poor heat transfer) and potential development of a pressurized pocket of low flash vapors. Be aware of the placement of any temperature monitoring or control devices. As a result of the poor thermal conductivity of the bitumen, a thermometer in the bitumen some distance from the heat source could read significantly different (even hundreds of degrees) from the true temperature of the bitumen near the heat source. For Health and Safety information, please make reference to the relevant MSDS.
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.
PACKING OF BLOWN BITUMEN 75/35
RAHA OIL is the manufacturer of oxidized bitumen 75/35 and packed different types of packaging including in Kraft bags, meltiable 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.
25 KG CARTON BOX
25kg mold packing: It is most expensive packing since there is mold on and with same mold we can ship out. The mold is carton and at destination you can remove the mold easily.
25Kg Polyamide bag: It is heat resistance bag and filling directly in water to cool down fast. It is firstly use not possible to take out the Polyamide from the bitumen and then use.
25kg craft bag: Craft bag is recycle packing and inside is special material to prevent sticking the bitumen to bag. This grade also possible to load on pallet or without pallet for customer.
TECHNICAL DATA SHEET OF OXIDIZED BITUMEN 75/35
| BITUMEN 75/35 | TEST METHOD | UNIT | SPECIFICATION |
|---|---|---|---|
| Specific gravity @ 25/25 °c | ASTM D70 | Kg/cm³ | 1.05 approx |
| Penetration @ 25°c | ASTM D5 | mm/10 | 30-40 |
| Softening point °c | ASTM D36 | °C | 70-80 |
| 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.T 102 | - | Negative |
