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Hi,
Could you please advice me In India How many grades of Bitumens are available and What is meant by 80/100,60/70 & 30/40.
Thanks a lot.
KRISHNA
See:
http://www.scribd.com/doc/19380138/A-Critical-Review-of-Bituminous-Mixes-Used-in-India
http://www.eng-tips.com/viewthread.cfm?qid=250032&page=2
http://www.scribd.com/doc/19380488/An-Overview-of-the-Viscosity-Grading-System-Adopted-in-India-for-Paving-Bitumen
Carl