Comparative Studies of Flexible and Rigid Pavement Design Methods

Abstract

In this project, the analysis was carried out flexible and rigid pavements, these analysis play a great role in the decision making process in selection of pavements types, the two most crucial parameters that govern the design of asphalt and plain-jointed concrete pavement are soil sub-grade strength, generally California bearing ratio (CBR), resilient modulus ( ) and modulus of sub-grade reaction (K), and the design traffic (million ESAL). The common design method for flexible pavement are the AASHTO method, Asphalt Institute and Two layer system. The present study applied the AASHTO and PCA method for design of rigid pavements, for both pavement types using 20 year design life and 5% annual growth rate. Relevant design data where obtained from DAR consult and technique cone group to design Omdurman Eldabaseen Road, a comparison has been done between different design results to find the best design alternative into material availability.