Use of Dregs as a Replacement for Hydrated Lime in Cement Coating Mortar

The pulp and paper industry generates a significant volume of solid waste during its operations. In order to mitigate the environmental impact caused by this industry, one residues was applied in eco-friendly composites. Therefore, research aims use green liquor dregs as partial replacement for lime coating mortars. Hydrated replaced percentages 10%, 15%, 20%, 30%, manufactured mortar specimens were tested terms their flowability, air content, specific gravity fresh state. hardened state, physical chemical characterization carried out determine influence introduction on properties different types mortar. Mechanical testing specimens’ compressive, flexural, adhesive strengths out, scanning electron microscopy performed evaluate microstructural features cement general, with showed high degree similarity conventional all studied aspects, including 30% group. obtained SEM images indicated that presence did not change formational mechanism C-S-H crystals, maintaining mechanical material even after accelerated aging procedure performed, reaching similar levels tensile bond when compared neat Furthermore, reached approximately 0.9 MPa mortar, allowing be used external applications.