Multi-Criteria Selection of Additives in Porous Asphalt Mixtures Using Mechanical, Hydraulic, Economic, and Environmental Indicators

Porous asphalt (PA) mixtures are more environmentally friendly but have lower durability than dense-graded mixtures. Additives can be incorporated into PA to enhance their mechanical strength; however, they may compromise the hydraulic characteristics, increase total cost of pavement, and negatively affect environment. In this paper, were produced with 5 different types additives including 4 fibers 1 filler. Their performances compared reference containing virgin bitumen polymer-modified bitumen. The performance all mixes was assessed using: mechanical, hydraulic, economic, environmental indicators. Then, Delphi method applied compute relative weights for parameters in multi-criteria decision-making methods. Evaluation based on distance from average solution (EDAS), technique order preference by similarity ideal (TOPSIS), weighted aggregated sum product assessment (WASPAS) employed rank additives. According results obtained, aramid pulp displayed comparable and, some such as abrasion resistance, even better bitumen, whereas cellulose fiber demonstrated best regarding sustainability, due economic benefits.