Moisture susceptibility and fatigue performance of asphalt binder modified by bone glue and coal fly ash

The main purpose of incorporating waste into asphalt binder is due to their excellent properties and low cost as binder modifiers, in contrast to the impracticability of typical binder in the current flexible asphalt pavement by the increase of heavy traffic loads and volumes. The focus of this study is to use coal fly ash (CFA) with bone glue modified asphalt to check the effect of coal fly ash (CFA) towards fatigue resistance and moisture sensitivity. This study combined 60/70 penetration grade binder with optimum percentage of bone glue (10%) and 2%, 4%, 6% and 8% of fly ash. After conducting consistency tests and some mixture tests, it is concluded that fly ash gives superior fatigue life to flexible asphalt pavement and the effect towards moisture sensitivity is slightly good.