Page 62 - HIGHWAY ENGINEERING LABORATORY_FLIP BUILDER

3.0 EQUIPMENT :

The apparatus used in the float test of bitumen are described below:

Floating apparatus Thermometer Water bath

Other accessory : Spatula, Heating oven, Beaker and Stopwatch

4.0 MATERIAL

1. Bituminous material- cutback bitumen or asphalt or tar products

2. Glycerine
3. Dextrine

5.0 DETAILED PROCEDURE :

REFERENCE
WORK PROCESS DOCUMENT

The procedure to carry out the float test of bitumen is described

below:
A. Sample Preparation :

1. Take the bitumen sample in a beaker and heat it to the lowest

possible temperature. Allow the bitumen to melt until it is
converted completely into a liquid state sufficient for pouring.

2. Stir the bitumen sample thoroughly to get a homogenous sample
free from any air bubbles.

3. Prepare a mixture of glycerine and dextrin in equal proportions.
Mix it well.

4. Take the brass plate and coat it with the mixture prepared in the
above step. Then place the smaller end of the brass collar on the

Higway Engineering Laboratory page 49