Influence of the incorporation of glass lapidary residue on the properties of Portland cement mortar

ABSTRACT

The construction sector plays a fundamental role in social development, but is responsible for the consumption of the world’s natural and energy resources. Therefore, research seeks to incorporate waste into the production of materials, aligning with global goals for reducing CO₂ emissions, disposal in landfills and resource extraction. Among industrial waste, waste from the glass cutting process (GCW) stands out, little explored in the literature and with significant rates of disposal in landfills. Therefore, this research aims to evaluate the properties of mortars incorporating GCW, as a partial replacement for Portland cement and aggregate, through a comprehensive investigation of the properties of the material produced. The materials that make up the mixtures and mortars were characterized in accordance with regulatory requirements. The data obtained were analyzed using the analysis of variance (ANOVA) methodology and Tukey test. The results showed that the GCW influenced the consistency index, the specific gravity and the tensile bond strength of the mortars, reducing water absorption, capillary absorption and shrinkage. As for compressive strength, it was observed that up to 10% by GCW, replacing cement, does not compromise this property, with a relative increase in strength when replacing sand. As for durability, there was an improvement in this property. It is concluded that the use of GCW, in partial replacement of Portland cement and fine aggregate, in the production of mortars is a technical alternative, as it presented performance that enables its use, and meets the principles of sustainable development, which present capable alternatives to contribute to saving energy and natural resources.

Keywords:
Glass cutting waste; Mortar; Sustainability; Waste