Ductillity Test IS 1208 1978

Hot the Bitumen at 75oc – 110oc above softening point say at 90oc + softening point and place it in testing moulds. Pour it in the Moulds Place the moulds at room temp. for 30 – 40 min. Keep the in water bath for 27 oc for 30 min then attach them in apparatus.
The rate of pull of the sample in appatatus is 50 mm per min at temp of 27oc.

When low temprature Ductility is required, the temp should be 4oc the rate of pull will be 10 mm per min.

For Grade S35 Ductility is 50 in cm (min)
For Grade S55 Ductility is 75 in cm (min)
For Grade S65 Ductility is 75 in cm (min)
For Grade S90 Ductility is 75 in cm (min)
For Grade S200 Ductility is 75 in cm (min)
If Ductility is above 75 cm then report it Above 75 cm

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