SPECIFIC GRAVITY of Bitumin

Updated: Jul 16, 2020

AIM

To determine the specific gravity of semi-solid bitumen road tars,

creosote and anthracene oil as per IS: 1202 - 1978.

PRINCIPLE

It is the ratio of mass of a given volume of bitumen to the mass

of an equal volume of water, both taken at a recorded/specified

temperature.

APPARATUS



SPECIFIC GRAVITY BOTTLES

i) Specific gravity bottles of 50ml capacity

ii) Water bath

iii) Bath thermometer - Range 0 to 44 °C, Graduation 0.2 °C

SAMPLE

Take the sample (half the volume of the specific gravity bottles).

PROCEDURE

i) Clean, dry and weigh the specific gravity bottle alongwith the

stopper (Weight 'A').

ii) Fill the specific gravity bottle with freshly boiled distilled

water and insert the stopper firmly. Keep it in the water bath

having a temperature of 27.0 + 1 °C for not less than half an

hour and weigh it (Weight 'B').

iii) Weigh the specific gravity bottle about half-filled with the

material (Weight 'C').

iv) Weigh the specific gravity bottle about half-filled with the

material and the other half with distilled water (Weight 'D').

v) Weigh the specific gravity bottle completely filled with the

material (Weight 'E').

REPORTING OF RESULTS




The average of the two results should be reporte

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