SPECIFIC GRAVITY TEST ON BITUMEN
Objective:
To determine the specific gravity of the given sample of bitumen.
Apparatus used:
Specific Gravity Bottle, Weighing Balance, Distilled Water.
Description Specific Gravity of Bitumen: is defined by BIS as the ratio of the mass of a given volume of the bituminous materials to the mass of an equal volume of water, the temperature of both being specified as 27oC.
Cleaned and dried Specific Gravity bottle is weighed along with stopper W1(g).
Weight of empty Specific Gravity bottle(W1) = _____g
Specific Gravity bottle is filled with distilled water and is placed in water bath maintained at 27°C.
The Specific Gravity bottle containing distilled water is now weighed W2(g).
Weight of empty Specific Gravity bottle + Water(W2) = _____g
The bituminous material is heated to a pouring temperature.
The Specific Gravity bottle containing bitumen is now weighed W3(g).
Weight of empty Specific Gravity bottle + Bitumen(W3) = _____g
The remaining space in the Specific Gravity bottle is filled with distilled water and stopper is placed.
The Specific Gravity bottle containing bitumen + distilled water is now weighed W4(g).
Weight of Specific Gravity bottle+ Bitumen + Water(W4)= _____g
Observation and Results.
Specific gravity of Bitumen = (W3-W1)⁄((W2-W4)-(W1-W3))
Weight of empty Specific Gravity bottle (W1) = _____ g
Weight of empty Specific Gravity bottle + water (W2) = _____ g
Weight of empty Specific Gravity bottle + Bitumen (W3) =_____ g
Weight of empty Specific Gravity bottle + Bitumen + Water (W4)= _____ g
Specific gravity of Bitumen =
Since the Specific Gravity value of bitumen ranges from 0.97 to 1.02 according to BIS, This bitumen is suitable for pavement construction
Both ends of the pipe must be trimmed to ensure parallel faces.
Both ends of the pipe must be trimmed to ensure parallel faces
