Long-term effects of waste brick powder addition in the microstructure and service properties of mortars

Abstract One way to reach a more sustainable cement industry is replacing clinker by additions, such as waste brick powder. The objective of this research is to analyse the influence in the long-term (until 400 days) of waste brick powder in the microstructure, durability and mechanical properties of mortars which incorporate up to 20% of this addition as a clinker replacement. The microstructure has been studied with the non-destructive impedance spectroscopy technique. According to the obtained results, mortars with 10% and 20% of brick powder, showed good service properties in the long-term, even better than those made with ordinary Portland cement.