Multi-Criteria Analysis of Plastering Mortars with Concrete and Brick Waste Based on Physical-Mechanical Characteristics and Lifecycle Impact Assessment Criteria

Abstract

Plastering mortars with construction and demolition waste (CDW) contents is considered a potential path to lowering the environmental damage caused by CDW. This paper presents an application of a multi-criteria decision-making analysis matrix based on physical-mechanical characteristics as well as life cycle assessment (LCA) criteria, from cradle to gate. Six new plastering mortars with concrete and brick CDW components, created for this study, were analyzed. The conclusion is that the mortar with 30% replacement of natural aggregates with concrete waste was the best overall performing mortar, followed by the mortars with 15% replacement with brick waste and 30% replacement with brick waste. The last section discusses practical implications and further research directions.