Abstract
The construction sector is currently challenged by environmental concerns, reducing energy consumption, and optimising the use of raw materials, hence the need to use new technologies and materials that have a better lifecycle performance. Recycling end-of-life materials or using industrial by-products is a solution in which resources are used efficiently. The considerable contribution of the production of hydraulic lime mortars to the environment, especially in relation to carbon dioxide emissions, is noteworthy. The study and use of nanotechnology and by-products, such as microgranulated corks, are solutions for more sustainable options, as they are more durable, and their properties are similar to conventional mortars. In this study, we explored the environmental benefits of mortars; to this end, we added different percentages of nano-TiO2 and microgranulated cork that can be used in the production of mortars based on hydraulic lime but with antifungal properties. With the analysed results, we verified that these two additives, besides presenting benefits regarding antifungal properties, are viable alternatives to chemical biocides and sustainable options for the mortar industry to improve its environmental performance. The best environmental performance is obtained with mortar with 2% microgranulated cork.
Highlights
For over 10,000 years, the oldest mortars discovered are in Galilee, located in the modern-day state of Israel, using binders such as aerial lime and gypsum
Portland cement performs poorly when applied to old buildings, due to its high stiffness and susceptibility to cracking [2,3]
As a result of several studies, hydraulic lime has been seen as a suitable binder for obtaining high-grade coatings for old buildings
Summary
For over 10,000 years, the oldest mortars discovered are in Galilee, located in the modern-day state of Israel, using binders such as aerial lime and gypsum. As a result of several studies, hydraulic lime has been seen as a suitable binder for obtaining high-grade coatings for old buildings. Most of the studies refer to old buildings [11] In these studies, fungi were collected in various types of materials: cementitious renders, concrete, plaster, plasterboard, etc. Fungi were collected in various types of materials: cementitious renders, concrete, plaster, plasterboard, etc Symptoms such as sore throat, rhinitis, and cough are most common in buildings where there is fungal contamination, especially in damp areas. These two sections serve to frame (we do not detail the analyses) the main objective of this study, which is the analysis of the sustainable properties of the mortars presented
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