A comparative cradle-to-gate life cycle assessment of geopolymer concrete produced from industrial side streams in comparison with traditional concrete

• DOI: 10.1016/j.scitotenv.2022.161230
• Publication Date: 2022-12-28T11:19:13Z
• Authors: Qaisar Munir; Mariam Abdulkareem; Mika Horttanainen; Timo Kärki
• Keywords: Metakaolin; Industrial waste; Global-warming potential

Traditional concrete production is a major contributor to global warming. Industrially produced geopolymer viable substitute limit the negative impacts of production. Thus, this study developed novel mix designs using industrial side streams, such as bark boiler ash, construction and demolition waste (CDW), fibre waste, mine tailings. A cradle-to-gate life cycle assessment (LCA) methodology was conducted evaluate potential these different (GPC) in comparison with traditional concrete. The results showed that industrial-based lower amounts sodium silicate metakaolin exhibited better environmental performance. Specifically, 10 % reduction content reduces warming impact by 16 compared processing curing for formulations has an less than 1 %. From sustainability perspective, performance from streams can be further improved increasing concentration recycled mixes. In addition, effective use improve management, sustainability, strength