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Bitumen grade 80/100 indicates that under the standard test conditions, penetration value of bitumen would vary from
  • a)
    0.8 mm to 1 mm
  • b)
    8 mm to 10 mm
  • c)
    8 cm to 10 cm
  • d)
    0.08 mm to 0.1 mm
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Bitumen grade 80/100 indicates that under the standard test conditions...
As per IS73 Grading of Bitumen is done by penetration test and and represent like this 80/100.
This is 1/10 of needle penetration in 5 sec. in mm.
So the answer is 8mm-10mm
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Community Answer
Bitumen grade 80/100 indicates that under the standard test conditions...
Explanation:

- Bitumen grade 80/100 indicates the penetration value of bitumen under standard test conditions.
- The penetration value is a measure of the hardness or softness of the bitumen.
- It represents the depth in tenths of a millimeter that a standard needle will penetrate into the bitumen sample under specified conditions of time, load, and temperature.
- In the case of bitumen grade 80/100, the penetration value will vary from 8 mm to 10 mm.

Penetration Value:

- The penetration value is determined by performing a penetration test on the bitumen sample.
- In this test, a standard needle is loaded with a specified weight and allowed to penetrate the bitumen for a specific time period.
- The depth of penetration is then measured in tenths of a millimeter.

Bitumen Grade 80/100:

- Bitumen grades are classified based on their penetration values.
- In the case of bitumen grade 80/100, the penetration value will range from 8 mm to 10 mm.
- This means that the standard needle will penetrate the bitumen sample between 8 mm and 10 mm under the specified test conditions.

Significance of Penetration Value:

- The penetration value of bitumen is an important parameter in determining its suitability for various applications.
- A higher penetration value indicates a softer and more ductile bitumen, which is typically used for applications requiring flexibility and deformation resistance.
- On the other hand, a lower penetration value indicates a harder and more brittle bitumen, which is suitable for applications requiring durability and resistance to deformation.

Conclusion:

- In summary, the bitumen grade 80/100 indicates that the penetration value of the bitumen will vary from 8 mm to 10 mm under standard test conditions.
- This information helps in determining the hardness or softness of the bitumen and its suitability for different applications.
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