Evaluation of Sustainable Material Through Life Cycle Assessment Using PSI Method

Abstract

This study demonstrates the method to achieve energy savings in the construction of buildings by using LCA techniques for the selection of sustainable ingredients of concrete. The study integrates technological aspect with environmental, social, and economic aspects. In this study, the effects of various sustainable factors on sustainable criteria including technological aspect such as practicability, recyclability, innovative technology, etc., are evaluated by passing the material through the life cycle process. Five coarse aggregate materials are passed through life cycle stages (preconstruction, construction, and postconstruction stages). Based on the effects of various alternatives on sustainable factors, a sustainable coarse aggregate material is selected. The importance of sustainable factors was identified and the material alternative is prioritized using Preference Selection Index (PSI) method. This approach can be implemented in any material alternatives to select the best material. The results of the study reveal that sintered fly ash aggregate has a higher PSI value (0.943) ten crushed gravel a has lower PSI value (0.903). The final ranking of coarse aggregate by using the PSI method is Sintered fly ash > Granulated blast slag > Bloated clay > Recycled from demolition waste > Crushed gravel.