Abstract

The present study contained performingMutual Chemical and PhysicalModification of(-Abo aljear) Nutral Asphalt by using Iraqi material on the forme west toachieve towModification Asphalt and to refine environment because it poisoning materials TheModification in this Study includes two Routes:- 1 – The Physical rout :- Add bothmaterials phosphogysum ( Pg.) and cement kiln dust ( KCD ) to Natural Asphalt afterrefining it to form water. The percent of blend (10% ,20% , 30% ,40% wt ) in pores size75μm . and measure Rheological traits wich include ( Penteration , Softening ) it hasgiven identical results the Optimization percentage is ( 40% Pg. & CKD ). And we makehot measurement which includes ( Flash point , Fire point, ) it has given good resultspecially by using rathio 40% for both material .in blend Temperature 90 .2 –The Chemical Route :- perfoming four chlorination processes on natural asphaltthe time of calorination( 0.5 hr , 1 hr, 1.5 hr , 2 hr) by uses Fe2O3 as acatalyst after addmaterial (Pg. ,CKD ).in the same Blends percentage and mesurment Rheology&thermalproperties. The good result it in 1.5 hr colorenation in 40% of material add. TheSpectroscopy study of the samples by using infrared chlorine gas besides addition bothmaterials add. The light were identical to previous studies .and the microscopey studyfor floor samples.the pictures have shown the existence of similiarity and good atomicdistribution to for floor asphalt .Generally this study has excellent results inmodification natural asphalt ( Hiet-Abo aljear ) and the capability of its using in stead

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