A Decision-Making Model for Supporting Selection of Sustainable Material for Road Construction in Indonesia

Abstract

Road construction using large amounts of materials may result in significant environmental concerns. Using sustainable materials can reduce environmental impacts, save energy, reduce costs and improve social systems. This research proposes a decision-making model for selecting sustainable materials for road pavement construction based on sustainability aspects by highlighting key criteria and their weightings. A literature review was undertaken to determine the relevant criteria and subcriteria when selecting environmentally friendly materials for national road projects, which experts then validated and assessed using a Likert scale (1 to 9). The VIseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method was used to analyse the assessed variables, generating importance rankings for each criterion and subcriterion to construct the model. The results showed that economic criteria were the most important, with a VIKOR index of 0.000, followed by environmental criteria, with an index of 0.754 and social criteria, with an index of 1.000. This study contributes significant knowledge to the field by highlighting the use of VIKOR as a decision-making tool that could aid stakeholders to select materials for sustainable road construction.