Question
Download Solution PDFWhich of the following represents hardest grade of bitumen?
This question was previously asked in
OSSC JE Civil Mains (Re-Exam) Official Paper: (Held On: 3rd Sept 2023)
Answer (Detailed Solution Below)
Option 3 : 30/40
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OSSC JE Civil Geo-technical Engineering Mock Test
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Detailed Solution
Download Solution PDFConcept:
- The penetration of Bitumen is used to measure its grade.
- It is reported as a penetration value of mm/10.
- Bitumen penetration grade 30/40 means the penetration value is 30 to 40 at standard test conditions and is commonly used as a Paving Grade.
- Low penetration grade bitumen is used in warm areas.
- High penetration grade is used in cold areas.
| Bitumen Grade | Comment |
|---|---|
| 30/40 | Heardest Grade |
| 60/70 | The typical grade Bitumen |
| 85/100 | Moderate grade |
| 120/150 | Moderate grade |
| 200/300 | Softest grade |
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