Trade-Off between the Social and Environmental Performance of Green Concrete: The Case of 6 Countries

• Main Authors: Jun Kono, York Ostermeyer, Holger Wallbaum
• Format: Article
• Language: English
• Published: MDPI AG 2018-07-01
• Series: Sustainability
• Subjects: life cycle assessment; life cycle thinking; LCT; social life cycle assessment; SLCA; building materials; construction industry; alternative cement
• Online Access: http://www.mdpi.com/2071-1050/10/7/2309

Improving the sustainability performance of construction industry is driven by two forces: regulatory push (policy initiatives), and market pull where improving a corporate sustainability performance can be financially beneficial for enterprises. Through the investigation of the sustainability hotspots and impacts, concerning social and environmental, of the steel slag mixed concrete (green concrete) the study assessed the factors relevant for its performance and examined how to improve them. Hotspot analysis and impact assessments were conducted by social and environmental life cycle assessment (LCA). The assessed green concrete represented not just the variety of geographic representation but also the product designs (three different slag contents) and the potential difference occurring from the corporate efforts, where four classes were introduced. The investigation of the social and environmental hotspots of the green concrete revealed a difference in the relation between the sustainability performance and steel slags. While the increased slag content resulted in worse social performance, the increase improved the environmental performance in all six investigated case countries. This trade-off between the social and environmental performance implied the limits of the sustainable product design and suggested the effectiveness of the supply chain management for improving the two sustainability performances for the green concrete.