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It is a kind of bitumen and standard penetration grade. This type is petroleum grade bitumen, manufactured from fractional- vacuum destination of crude oil. Bitumen penetration grade 30/40 means the penetration value is in the range 30 to 40 at standard test Bitumen penetration grade 30/40 is semi-hard penetration grade bitumen used as a paving grade bitumen which is suitable for road construction and repair. This grade of bitumen is mainly used in the manufacturing of hot mix asphalt for bases and wearing courses. Bitumen penetration grade 30/40 is one of the most used bitumen grades and it’s a basic material for all other bituminous products.
Bitumen 30/40 Specifications
| No. | Analysis | Unit | Limit | Test Method |
|---|---|---|---|---|
| 1 | Density@25 ̊ C | Kg/m³ | 1010-1060 | ASTM D70 or D3289 |
| 2 | Penetration@25 ̊ C | Mm/10 | 30-40 | ASTM D5 |
| 3 | Softening point | ̊ C | 55-63 | ASTM D36 |
| 4 | Ductility@25 ̊ C | Cm | 100 Min. | ASTM D113 |
| 5 | Loss on heating | Wt% | 0.2 Max. | ASTM D6 |
| 6 | Drop in penetration after heating | % | 20 Max. | ASTM D5 and D6 |
| 7 | Flash point | ̊ C | 232 Min. | ASTM D92 |
| 8 | Solubility in Trichloroethylene | Wt% | 99.0 Min. | ASTM D4 |
| 9 | Spot test | - | Negative | AASHOT102 |
Usage: The main common usage of bitumen 30/40 is being used for paving and road construction the penetration grade bitumen has a thermoplastic property which causes the material to soften at high temperatures and to harden at low temperatures.
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