SPECIFICATION OF BITUMEN

Sr.No.	Characteristics	80/100	60/70	30/40	10/20
1	Specific Gravity at 27 0C min	0.98	0.99	0.99	1.00-1.05
2	Water percent by wt.max	0.2	0.2	0.2	-
3	Flash point, 0C	175	175	175	225
4	Softening point 0C	35-50	40-55	50-65	65-80
5	Penetration at 25 0C, 100 g 5 sec in 1/100 cm	80-100	60-70	30-40	10-20
6	Ductility at 27 0C, in cm. min	75	75	50	2.5
7	Loss on heating, percentage by wt.Max	1	1	1	0.10
8	Penetration of residue	60	60	60	-
9	Percent by wt. soluble in carbon di- sulphide, min	99	99	99	99