Bitumen grades are 30-40,60-70, 80-100. what is mean by 30-
40

Answer Posted / 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



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