Paving Grade BitumenBitumen 40 / 50
Bitumen penetration grade 40/50 means the penetration value is in the range 40 to 50 and softening point between 52 ~ 60C at standard test conditions. Penetration grade bitumen supplied by ZigguratOil is pure petroleum grade bitumen, manufactured from vacuum bottom by passing hot air. The bitumen supplied by ZigguratOil is produced from remain of crude oil after cracking and removing hydrocarbon. The penetration grade bitumen 40/50 has a thermoplastic property which is like as synthetic resin material which gets softer with heating and hardens when cooled.
This grade of bitumen 40/50 has very strong viscosity compare to other grades.
Intended use
Paving-grade bitumen 40/50 can be used for asphalt concrete in base and binder courses for light, medium and heavy traffic roads.
Specification
| REQUIRMENT | ||||
| TEST METHOD | UNIT | MIN | MAX | |
| PENETRATION@ 25°C | ASTM D5 | 0.1 mm | 40 | 50 |
| SOFTENING POINT | ASTM D36 | °C | 52 | 60 |
| DUCTILITY@ 25°C | ASTM D113 | Cm | 100 | – |
| LOSS ON HEATING %WT | ASTM D6 | % (m/m) | – | 0.5 |
| FLASH POINT | ASTM D92 | °C | 250 | – |
| SOLUBILITY IN CS2 %WT | ASTM D4 | % (m/m) | 99.0 | – |
| DROP IN PENETRATION AFTER HEATING | ASTM D5 | % | – | 20 |
| DENSITY @25°C | ASTM D70 / D3289 | kg/m3 | 1.001 | 1.06 |
process temperatures
| At laboratory | |||
| Sample compaction temperature (Marshall samples or samples compacted in gyratory press) | 140–145°C | ||
| At mixing plant | |||
| Bitumen pumping temperature | >140°C | ||
| Temperature of bitumen for bituminous mixture production | 165–175°C | ||
| At site | |||
| Minimum temperature of the supplied bituminous mixture (spreader’s hopper) | 150°C | ||
| Minimum compaction temperature of bituminous mixture | 120°C | ||