Applying Bailey Method in Asphalt Mix Design –Acase Study in Khartoum Area Materials

Abstract

While there has been some guidance on the use of coarse and fine mixes, at this time, designers are still struggling with mix designs and have to conduct numerous trials to select proper aggregate blend. A better way to speed up the process and understand the mixes that are being produced is needed. The Bailey method was originally developed by Robert D. Bailey of the Illinion department of transportation in the early 1980s. It is practical tool that has been successfully utilized for developing and analyzing hot asphalt in the lab field. The Bailey provide a good starting point for mix design and valuable aid when making adjustments at the plant to improve air voids, VMA and the overall workability of the mix whether you are using Marshal or superpave. Thisdescribes the methodology in detail with some real life examples for samples carried out from JablToria, Alselate area and Omdurman west to help mix designers and contractors better understand the hot asphalt mixtures.