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Bitumen grades are 30-40,60-70, 80-100. what is mean by 30-
40
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the penetration caused by standard Condition i.e.
Standard Weight= 100 gm
Standard temp. = 25 Degree C.
Standard penetration time = 5 Seconds
Unis = 10th of mm to show the results and avoiding Errors
e.g. if the value is 30/40, the 30/40 is the bitumen
penetration value (tested in standard condition) lies
between 3 to 4 mm.
| Is This Answer Correct ? | 109 Yes | 7 No |
Answer / nilesh ghadge
IT MEANS IT HAVING THE PENETRATION VALUE BETWEEN 30 TO 40
| Is This Answer Correct ? | 141 Yes | 47 No |
Answer / tawalbeh
yes, and the unit is (0.1mm) ..
e.g: 80 = 8mm = 0.8cm
| Is This Answer Correct ? | 98 Yes | 13 No |
Answer / venky
the needle denotes in 1/10th 's ofmm....so it mean 3mm to 4 mm
| Is This Answer Correct ? | 50 Yes | 7 No |
Answer / anwar_eng04
the rage 30-40 means the bitumen has having grades between
these two valus and and it is determined by average
peneteration value of the test which conducted by the
instrument called penetrometer.
| Is This Answer Correct ? | 37 Yes | 5 No |
Answer / hossain
Penetration value (tested in standard condition) lies
between 3 to 4 mm.
| Is This Answer Correct ? | 11 Yes | 4 No |
Answer / abir kumar ghosh
30-40 means bitumen having penetration of a needle between
30-40 mm with standar weight on it at 25 deg Centigrade.
Lower the penetration is higher the viscosity.
The test is done with the apratus called Vicats apparatus.
| Is This Answer Correct ? | 28 Yes | 25 No |
Answer / 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 |
Answer / aditya richie
30-40 means bitumen having penetration between 30-40 mm .
The test done is called bituminous penetration test ,
machine used is vicats apparatus.
| Is This Answer Correct ? | 26 Yes | 29 No |
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