Development of Design Catalogue and Sustainability Analysis of GRT and SBS: A Comparative Study between Hungarian and Pakistani Pavement Design Codes

The aim of the paper is the development of a design catalog and sustainability analyses of road layers. In this paper, the material and thickness of the layers for three different traffic load classes will be determined based on the pavement design of the Hungarian and Pakistani standards. This was achieved using the Hungarian design method and the AASHTO method adopted by the National Highway Authority in Pakistan. "This will enable engineers in the field to choose pre-established designs from the catalog.". The forefront of pavement design is the direction in which ongoing research endeavors in the field are guiding us. The empirical design, as outlined in the AASHTO 1993 version, relies on statistical models derived from road tests. Moving beyond this, the mechanistic-empirical design involves assessing stresses and strains alongside empirical models, such as the MEPDG approach. Looking ahead, a mechanistic design encompasses models based on mechanics and represents the frontier where researchers are advancing the future of pavement design. The Hungarian pavement design method (eÚT 2-1.202:2005, 2005) primarily relies on mechanistic-empirical pavement design principles. However, it limits practicing engineers to choosing predefined designs from the catalog. The Comparison was carried out between Hungarian and Pakistani pavement designs. Subsequently, comparative calculations between GRT and SBS will be made for CO2 emissions and other sustainability parameters. To achieve this aim, the Pavement LCA tool by the US Department of Transportation Federal Highway Administration was employed.