Self-leveling Mortars with Marble and Granite Waste: Reduced Shrinkage and Improved Performance

The development of self-leveling mortar dosages by using a powder from marble and granite cut waste (MGCW) is a sustainable alternative. The presence of waste in dosages improved the workability of self-leveling mortars. Comparative tests were conducted with polypropylene synthetic fibers to minimize shrinkage phenomenon. The mixture optimized with 50% MGCW, water/cement ratio of 0.55, cement/sand ratio of 1:1.5 (in mass using CPV-ARI-RS cement) had 28 days compressive strength of 38.89 MPa. The incorporation of polypropylene fibers reduced the shrinkage in 68.92% in 7 days, 42.51% in 14 days, 46.48% in 21 days and 47.63% in 28 days. MGCW and fiber did not influence thermal conductivity