 This study demonstrated how discarded face masks can be used to create stronger concrete. Polypropylene fibers derived from these masks were added to two batches of concrete, one serving as a control mix. The modified mortar was tested against the control mix in terms of its split tensile, flexural, compressive strength, and water absorption. Results showed that the addition of mask fibers resulted in an increase of 17% in compressive strength and 22% in tensile strength. These findings suggest that upcycling discarded face masks into polypropylene fibers could provide a sustainable solution for managing biomedical waste, while also creating stronger concrete. This article was authored by Shiva Avyadiapan, Patricio Sandoya, Krishna Prakash Arunachalam and others.