Development and implementation of BIM-integrated LCA method for carbon emission assessment of concrete construction: case of overpass project in Thailand

Purpose This study aims to address the significant challenge of carbon emissions in the construction industry by introducing an integrated approach utilizing Building Information Modeling (BIM) and Life Cycle Assessment (LCA) to evaluate and reduce the carbon footprints of a construction project in Thailand. Design/methodology/approach This research employs a BIM-integrated LCA methodology to quantify and analyze carbon emissions across various construction phases. The approach integrates detailed visualization and quantification capabilities of BIM with the comprehensive environmental impact assessment provided by LCA. This method was applied to assess the carbon emissions from the foundation structures and columns of an overpass project in Bangkok as the case study. Findings The application of the BIM-integrated LCA approach not only highlighted critical areas of carbon intensity but also facilitated targeted interventions, substantially projecting the potential for carbon reduction. This approach demonstrated that carbon emissions from the original design could be reduced significantly, with a 67.51% decrease in Global Warming Potential by implementing alternative construction element designs. This highlights the efficacy of the integrated approach to facilitate the identification and implementation of carbon-reducing measures in construction projects. Originality/value The study introduces a novel application of BIM and LCA in a unified framework to the Thai construction industry. It is proposed as a standard methodology for future projects to enhance sustainable construction practices and reduce environmental impacts.