Developing technologies in the construction industry, that provide sustainable solutions for futurernpavement condition is vital given the ever-increasing demand on the supply of bitumen and goodrnquality pavement construction materials. Reclaimed asphalt pavement (RAP) is formed by coldrnmilling, heating, softening and removal of the existing aged asphalt pavement, full-depth removalrnof plant waste hot mixed asphalt (HMA) materials. The research investigates to efficiently utilizernand assess the impact of RAP in asphalt mixes. The evaluation involved Nine mix designs ofrncontrol mixes and partially substituted mixes. Out of the nine mixes, four are used as control mixesrnand the other five are checked for the comparative advantages of partially substituted mixes. rnLaboratory testing was accomplished in the control mix with the production of Marshall compactedrnspecimens to determine the performance of Hot Mix Asphalt using Marshall Mix design methods andrnparameters such as air voids, voids in mineral aggregate, voids filled with asphalt cement, MarshallrnStability and flow are measured. Then after optimum bitumen content was obtained from the controlrnmixes. Besides this, the optimum bitumen content is determined for a partially substituted mix. rnFor the selected optimum bitumen content, Three samples from each mix which partially substitution ofrnRAP with (10, 20, 30 and 40) % by weight of RAP. To examine the rutting resistance of the RAPrnsamples rutting test were conducted by wheel tracking. In addition to this Indirect Tensile Strength testsrnwere conducted to evaluate the moisture susceptibility of the sample and the three samples (i.e.rn10%,20%,30%) prevails that the samples were not susceptible to water and the figures were above thernspecification (80%). rnFinally, the performance test result of laboratory RAP sample tests provided that using 20% byrnweight of RAP is strongly suggested. The laboratory result and other relevant parts of the thesisrnare illustrated.