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Bitumen grades are 30-40,60-70, 80-100. what is mean by 30-
40
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Answer Posted / abir kumar ghosh
30-40 means bitumen having penetration of needle (with
standard weight)between 30-40 mm in 5 seconds at 25 deg
cent.
The test done with a apratus called Vicats apparatus.
| Is This Answer Correct ? | 26 Yes | 23 No |
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