Definition of Oxidized Bitumen 75/35
Oxidized Bitumen 75/35 is an oxidized Asphalt produced by oxidizing a selected petroleum asphalts without adding the catalyst. Oxidized Bitumen 75/35 has high softening point, high flash point and it is highly stable during melting.
As said before, Bitumen 75/35 is based on petroleum bitumen which is made by Blowing Bitumen 60/70 by very hot air. In addition, the numbers relate to the midpoint of the material’s softening point and penetration respectively.
The softening point value measured by Ring and Ball method as determined by ASTM D36. Also, the penetration value is in 1/10 mm as determined by IP49 or ASTM- D5. Oxidized bitumen has a higher softening point than viscosity grade and penetration bitumen. Consequently, oxidized bitumen is less susceptible than penetration bitumen and viscosity bitumen to temperature changes.
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Application of Oxidized Bitumen 75/35
his kind of bitumen is suitable to be used in the chemical, raw material for bitumen coat, paper-pulp-board, textile processing, pavement, crack seal and repairmen, civil works, bitumen coat for piping, roofing, construction industries; sealing and insulating buildings, adhesive, construction materials additive, road construction, dust-binding, insulating and impregnating agent, isolation bitumen membrane sheet, make rubber and plastic products.
typical uses for bitumen 75/35 include roofing, pipe coating, hydraulic applications, 75/35 is mainly using in paint manufacturing and coating in hot area.
Storage and Handling
Blown asphalt 75/35 is best up to 10 years from the day it was manufactured. It is suggested for higher time of warehouse keeping to keep the bitumen under shelter and out of the rain and sun shine.
Health & Safety
Workers should wear protective masks, gloves, and goggles during application. The asphalt can be removed from equipment and tools with kerosene or gasoline.
Packing of Oxidized Bitumen 75/35
The packing of 25kg mold is more expensive than other weights, due to the strong carton mold it contains. This will ensure that shipment of the molds can be easy and when it gets to destination, removal of it is done with ease. High heat resistance of polyamide bag 25kg makes cooling pretty faster by dipping into water. But is only a single application solution, since the used bitumen could not be separated from the polyamide material. Whereas, the 25kg craft bag is the ecological solution which could be recycled along with an internal specific coating for avoiding adhesion of the bitumen on packaging. Such kind of bags may also be applied without palletizing as well according to customer preferences.
Specification
| Bitumen 75/35 | Test method | Unit | Specification |
|---|---|---|---|
| Specific gravity @25/25 C | ASTM D70 | (Kg/m3) | 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.T.O 102 | — | Negative |
