At first, when conducting the specific gravity test for bitumen, clean the specific gravity bottles and weigh them along with the stopper after they are dried. Note down this weight reading as And then one of the bottles was filled with distilled water and put on the stopper. Before filling the water should be cleanly boiled and cooled.
After that minimum at 27 ± 0.1 °C and for at least 30 minutes in a beaker of distilled water up to its neck place the bottle on submerged. or at which any other temperature specific gravity is to be determined and can be maintained.
With a dry cloth on the outside of the bottle clean the surplus moisture after Remove the bottles from the water bath. Again, measure the weight reading of the bottle. Note down this weight reading as After taking the weight reading the bottle should be dry again.
By the application of heat carefully bring the bitumen specimen to a fluid state so that the material does not evaporate. After the step slightly warm the specific gravity bottle. Until half, into the dry and clean specific gravity bottle, pour the bituminous sample. Ensure that with the sides of the bottle the material does not come in contact.
With the neck of the bottle, A small funnel can be used for pouring the materials which prevent the material from coming in contact. If there have any air bubbles the partly filled bottle to stand at 60-70 temperature so that the entrapped can escape.
Up to the specified temperature allow the bottle to cool and weigh it. Note down this weight reading as Fill the bottle with freshly boiled distilled water that containing asphalt and loosely place the stopper. We should care that how to we can prevent air bubbles in the bottle.
We need to attach the stopper firmly for at least 30 minutes and place the specific gravity bottle in the water bath. With a dry cloth on the outside of the bottle clean the surplus moisture after Remove the bottles from the water bath. At last measure, the weight reading of the bottle again and note down this weight reading as