Evaluation of the Incorporation of Marble and Granite Residue in Coating Mortars

Abstract

The disposal of ornamental rock waste generates serious environmental impacts, where incorporation in construction materials would be a solution with low environmental impact. The objective of this work is to evaluate the performance of the incorporation of waste from the industry of both marble and granite in mortars. The residues were incorporated at different levels of incorporation (25, 50, 75 and 100%) using different mortar traces (1:1:6 and 1:2:9). The materials were characterized and the mortars were evaluated in the fresh state by the consistency index tests and Squeeze Flow. In the hardened state, mechanical strength, water absorption, and tensile strength tests were performed. The results indicated that the marble residue presents great potential of use, while the incorporation of granite shows a loss of performance.