Approach for sustainability assessment for footbridge construction technologies: Application to the first world D-shape 3D-Printed fiber-reinforced mortar footbridge in Madrid

As a means to improve sustainability in the construction sector, 3D-printed concrete technologies (3DPCTs) are emerging as potential alternatives traditional for reinforced structural components. Traditional still used most architecture and civil engineering applications, although D-shape technology 3DPCTs (DS-3DPCT) has proven technically feasible producing pilot elements such footbridges. These pilots have been contextualized within research industrial frameworks, which relevant technical information is confidential cost environmental performance related conclusions be validated reported. Moreover, scarce conducted on by DS-3DPCT, that carried out primarily incipient focused identifying governing indicators some specific non-generalizable quantifications. Former studies ack dealing with DS-3DPCT from holistic integrated perspective, requires quantifying coupling three main economic, social pillars. This project comprehensively develops sustainability-oriented decision-making approach assessing footbridges based MIVES Delphi method. The Castilla-La Mancha park footbridge constructed ACCIONA S.A. 2016 Madrid was representative case study validate this applicability. results quantify sustainable, excellent values greenhouse gas emissions reduction, generation of qualified jobs, benefits brand, occupational risk prevention, design flexibility. However, more maturity its economic values. range application might extended other typologies introducing -when necessary-other weights’ distributions.