Soil-cement brick with granite cutting residue reuse

摘要

This research proposes the study of granite cutting residue (GCR) reuse in the incorporation of soil-cement brick. The proposed formulations were the replacement of cement by granite cutting residue in 5%, 10%, and 20%, and the replacement of soil by residue in 20%, 30%, and 40%. Thus, 13 specimens were produced for each formulation, in a 1:8 trace of cement and soil, which were tested for their compressive strength, specific mass, absorption, and durability. The granite cutting residue showed beneficial results regarding the durability of soilcement bricks. The formulation with a 5% partial specific mass replacement of cement by the residue showed the best performance, with a loss of mass lower than the other mixtures and superior compressive strength, in addition to maintaining the water absorption values close to the reference brick. It was possible to replace the soil with the residue in up to 20%, without significant variation of properties in relation to the reference one. The soil-cement bricks viability of production with partial replacement of the soil and cement, by the granite cutting residue, proved to be a feasible and sustainable alternative when there was an improvement in the properties, concluding that the residual material allows an appropriate destination and thereby, the reduction of raw materials consumption and extraction.