The Effect of Different Filler Materials and Gradation on the eharacteristics of Bituminous Mixture.

The bituminous mixtures are a combination of bituminous materials as binders, properly
graded aggregates and filler materials is sometimes added to bituminous mixtures. The
increase in demands in the pavement surface with ever greater traffic levels on major
roads has led to a need to improve the inherent properties of bituminous mixtures. So in
order to improve the characteristic bituminous mixture, the objectives for this project are
basically to access the effect of filler materials on bituminous mixture and to select the
best combination of filler materials and gradation that produce the best bituminous
mixtures.
Some tests have been conducted in order to fulfill the objectives of this project. For the
first step, all materials have been tested to make sure that those materials are followed the
JKR and BS specification. The characteristic of the mixture have tested by performing
the Marshall Test.
Based on the results from physical and chemical properties of the materials used, and
Marshall Test, it is concluded that combination of hydration lime and well graded is the
best combination that produce the best bituminous mixture.