%0 Journal Article
%A Gupta, Anik
%A Slebi-Acevedo, Carlos J.
%A Lizasoain-Arteaga, Esther
%A Rodriguez-Hernandez, Jorge
%A Castro-Fresno, Daniel
%T Multi-Criteria Selection of Additives in Porous Asphalt Mixtures Using Mechanical, Hydraulic, Economic, and Environmental Indicators
%D 2021
%U http://hdl.handle.net/11556/1085
%X Porous asphalt (PA) mixtures are more environmentally friendly but have lower durabilitythan dense-graded mixtures. Additives can be incorporated into PA mixtures to enhancetheir mechanical strength; however, they may compromise the hydraulic characteristics, increasethe total cost of pavement, and negatively affect the environment. In this paper, PA mixtures wereproduced with 5 different types of additives including 4 fibers and 1 filler. Their performances werecompared with the reference mixtures containing virgin bitumen and polymer-modified bitumen.The performance of all mixes was assessed using: mechanical, hydraulic, economic, and environmentalindicators. Then, the Delphi method was applied to compute the relative weights for theparameters in multi-criteria decision-making methods. Evaluation based on distance from averagesolution (EDAS), technique for order of the preference by similarity to ideal solution (TOPSIS), andweighted aggregated sum product assessment (WASPAS) were employed to rank the additives.According to the results obtained, aramid pulp displayed comparable and, for some parameterssuch as abrasion resistance, even better performance than polymer-modified bitumen, whereascellulose fiber demonstrated the best performance regarding sustainability, due to economic andenvironmental benefits.
%~