Pavement design is aimed for achieving a pavement structure which is economical,rncomfortable and yet safe to travel by motorist; and which minimizes development ofrnpavement distress features during the design life of the pavement. However, inappropriaternselection of road materials for construction may cause early pavement failure.rnLow quality or out-of-specification materials are usually available from local sources. Ifrnthere is appropriate treatment of the materials or/and structural design, the optimum usernof local materials can be permitted, the construction can be accelerated and significantrnmonetary benefits can be realized.Acccordingly in this study it was attempted to definernthe requirement related to blending of some volcanic cinder gravel from south east ofrnAddis Ababa for Gelan Asphalt road project.rnThe performance of mechanically blended volcanic cinder with natural gravel wasrnevaluated in meeting Ethiopian Road Authority (ERA) manual specification. The cinderrngravel was blended with some trial proportions of 1:1, 2:1 and 3:2 weathered naturalrngravel by mass and different test including grain size distribution, Attereber limit,rnCalifornia Bearing ratio Linear shrinkage, Loss Angeles Abrasion and perographicrnanalysis has been conducted.rnResults showed that blending of 50% of natural gravel with 50% volcanic cinder, andrn67% natural gravel with 33% of volcanic cinder has no plasticity characteristic and itsrnplastic product is zero. However blending of 60% of weathered natural gravel with 40%rnof volcanic cinder improves its index properties and readily can be used for sub-base roadrnconstruction as far as it satisfies ERA sub-base materials requirements.