Page 69 - HIGHWAY ENGINEERING LABORATORY_FLIP BUILDER

Material for sample of bitumen

Compaction Machine Water Bath

4.0 DETAILED PROCEDURE :

REFERENCE
WORK PROCESS DOCUMENT
The procedure of this test is stated in detail BS 1377:1985

A. Preparation of Specimen (Premix)
1. Aggregates and fillers that will be used are be determined

2. The mixture comprises sufficient aggregate, sand and filler to
produce a specimen of approximately 1200g. Preheat the

aggregate in oven at 150 C for at least 4 hours
3. Heat the bitumen at the same temperature or the temperature of

the mixture

4. The hot aggregate, will be heated again in bowl (pan). Heat
without adding any bitumen mix for 1-2 minutes. Then add the
correct amount of bitumen. The bitumen content that is used is the
percentage of weight of the total mix. Use bitumen content ... %

5. The temperature during the mixing of aggregate and bituminous
mixture should not be below than 137 C

6. While preparing the mixture, the ram and Marshall mold should be
cleaned and heated to 137 C

7. Put the mold on the table and put a piece of filter paper into the

mold. Pour the hot mix into the mold and smoothen the top
surface. Then put another piece of filter paper.

Higway Engineering Laboratory page 56