Study of the physical and mechanical properties and durability of sustainable mortars with waste glass and wood ash

Abstract

Construction is one of the industries responsible for emitted of carbon dioxide (CO₂) into the atmosphere. In addition, waste is often discarded in the environment. In this context, the aim of this research is to analyze the influence of hybrid mixtures of glass lapidary waste (GCW) and wood ash (WAC) on the properties of mortar, partially replacing Portland cement. The tests were carried out in accordance with the standards. The results showed that the incorporation of hybrid mixtures reduced the consistency of the mortars without affecting the specific gravity, air content, water absorption, and bond strength. There was also a reduction in shrinkage and capillary water absorption. In addition, it was possible to replace 30% of the cement without compromising compressive strength. Finally, there was an improvement in durability (mass variation). Therefore, this study presents a more sustainable mortar production practice, contributing to a reduction in the extraction of raw materials, energy consumption, CO₂ emissions, and the proper disposal of solid waste.

Keywords
Sustainability; Mortar; Glass waste; Wood ash