Penetration Bitumen
Solid tar penetration grading system is used for calculation of semi liquid viscous bitumen (penetration grade) ,that packing procedure is based on penetration depth and tar leniency (softness) grade and usable in the cold areas , on the contrary low penetration grade is known as solidified grade which usable in temperate areas , the bitumen penetration range defined by lengthening with standard needle apparatus in special shape under is defined load bearing factor equals to 100 grams per 5 seconds exposing to 25 centigrade degrees temperature for range of penetration.
The penetration range is between 60 and 70 degrees, e.g. bitumen 60-70 is applicable mainly for road construction the bearing softness or lenient point between 49 and 56 C º
Packing
- Drum
- Bulk
- Jumbo bag
Analyze
| Test | Test Method | 30-40 | 40-50 | 60-70 | 85-100 | 100-120 |
|---|---|---|---|---|---|---|
| Density 25ºC | ASTM D-7 | 06/1-01/1 | 06/1-01/1 | 06/1-01/1 | 5 0/1-1 | 04/1-01/1 |
| Penetration 25ºC | ASTM D-5 | 30-40 | 40-50 | 60-70 | 85-100 | 100-120 |
| Softening point ºC | ASTM D-36 | 55-63 | 52-60 | 49-56 | 45-52 | 42-49 |
| Ductility at 25ºC cm | ASTM D-113 | Min 100 | Min 100 | Min 100 | Min 100 | Min 100 |
| Flash point ºC | ASTM D-92 | Min250 | Min250 | Min250 | Min250 | Min250 |
| Solubility disulfide% wt. | ASTM D-4 | Min-99 | Min-99 | Min-99 | Min-99 | Min-99 |
| Spot Test | AASHTO T 102 | Negative | Negative | Negative | Negative | Negative |
| Loss on heating | ASTM D-6 | Max 2 /0 | Max 2 /0 | Max 2 /0 | Max 2 /0 | Max 2 /0 |
Drop in penetration after heating | ASTM D-6-D-5 | 20 Max | Max20 | Max20 | Max20 | Max20 |