Physical–mechanical and thermal characterization of a cement mortar based on cork residues for construction applications
摘要
This work aims to study the effect of incorporating cork aggregates into a cement matrix composed of alluvial sand and calcareous sand to develop a lightweight mortar. To achieve a compact matrix, the adopted methodology involved combining the two types of sand in a 50/50 ratio. This mixture was then partially replaced with two types of cork aggregates (natural and expanded) at substitution rates of 0%, 20%, 30%, 40%, 50%, and 60%. The results show that using natural and expanded cork aggregates reduces the dry bulk density by approximately 41% and 39%, respectively, compared to the control mortar. Thermal conductivity was reduced by up to 70%. Mortars containing expanded cork aggregates exhibited a higher thermal insulation performance than those made with natural cork aggregates.
Graphical abstract