Influence of NBR latex on emulsified bitumen permanent deformation and fatigue cracking resistance

Elastomeric polymer is one the efficient bitumen additives that modified bitumen properties at intermediate and high temperatures , increasing bitumen consistency and temperature sensitive reduction are effects of elastomers on bitumen that, in this research decided by comparing two sample of neat bitumen emulsion and NBR(Acrilonitril Butadiene Rubber) modified bitumen emulsion considered effects of NBR latex on permanent deformation and fatigue cracking resistance ,by this purpose bitumen emulsion sample residues tested by dynamic shear rheometer (DSR) on oscillatory mode to indicate rheological parameters .in the following dissipated energy determined by using existing relations and considered effects of NBR latex on bitumen emulsion residue fatigue cracking resistance by analyzing resulting curves.