Environmental contamination due to waste disposal and high costs has led researchers to explore recycling waste materials, particularly in concrete and mortar production.
The substantial amount of discarded black tea bags, which often end up in landfills, presents an opportunity for reuse, prompting studies on using nanocarbon tubes from tea waste as a cement replacement.
Experimental results indicate that substituting up to 2% of cement with nanocarbon tubes improves compressive strength and flowability of mortar, while higher replacement levels may decrease strength but increase density.