Mechanical Analysis of Subgrades of Road Pavements in Life Cycle Assessment

When evaluating the sustainability of a construction project, it is important to verify influence climate uncertainty and depletion natural resources that permeate strategies make infrastructure possible, especially those associated with transportation sector, which have great potential generate environmental impacts. Thus, objective this study evaluate effect subgrade material variation, constitutes highway pavements flexible surfacing, can in Life Cycle Assessment (LCA) these infrastructures. For purpose, had same materials thicknesses for execution base (gravel soil-NG') subbase (clay soil LG'), but subgrades composed different types tropical soils, classified as lateritic non-lateritic, were proposed. The combination elements enabled elaboration service lives atmospheric emissions. scope included phases extraction production inputs necessary build roadway envisioned each scenario, well phase itself, considering operation equipment. LCA focused on emission greenhouse gases (GHGs) quantity primary energy employed considered. It was concluded used similar mechanical behavior, therefore results design asphalt overlay close consequently result consumption gas Doi: 10.28991/CEJ-2022-08-07-012 Full Text: PDF