Page 40 - HIGHWAY ENGINEERING LABORATORY_FLIP BUILDER

3.0 EQUIPMENTS:

Penetrometer set Transfer Dish Stop Watch Spatula

4.0 DETAILED PROCEDURE : FLAKINESS INDEX TEST

REFERENCE
WORK PROCESS
DOCUMENT
1. The penetration apparatus is specified in many standards

throughout the world but has always the same
2. Specimens are prepared in sample containers and placed in
a water bath at the prescribed temperature of test for 1 to 1.5
hours before the test.

3. For normal tests the precisely dimensioned needle, loaded to
100 ± 0.05 g, is brought to the surface of the specimen at right
angles, allowed to penetrate the bitumen for 5 ± 0.1 s, while
the temperature of the specimen is maintained at 25 ± 0.1°C.

The penetration is measured in tenths of a millimeter (Deci-
millimeter, d-mm).
4. Make at least three determinations on the specimen. A clean
needle is used for each determination. In making repeat

determinations, start each with the tip of the needle at least
10 mm from the side of the container and at least 10 mm
apart.

Apparatus for the bitumen penetrationtest

Higway Engineering Laboratory page 27