In a groundbreaking study published in ‘MATEC Web of Conferences’, researchers have explored an innovative solution to enhance the sustainability of lime-based mortars, a critical material for restoring historical buildings. The study, led by García Lascurain Paulina Guzmán from the Department of Chemistry, Materials and Chemical Engineering ‘Giulio Natta’, investigates the incorporation of micro- and nano-cellulose into the slaking process of calcium oxide (CaO) to improve the performance of portlandite crystals.
The construction industry is facing immense pressure to reduce its environmental impact, particularly in light of the climate crisis. Traditional cement-based materials are significant contributors to greenhouse gas emissions. As the study suggests, “the most sustainable building is the one that has already been built,” emphasizing the need for effective restoration techniques that utilize compatible materials. Lime-based mortars are preferred for their historical compatibility, but their slow setting times and durability challenges have hindered broader acceptance.
Guzmán’s research indicates that by adding natural organic additives like micro- and nano-cellulose during the slaking process, the quality of the binder can be significantly enhanced. “Our findings suggest that these additives not only affect the growth of portlandite crystals but also improve their carbonation kinetics,” Guzmán stated. This improvement could lead to faster and more durable restoration solutions, making lime-based mortars a more viable option for construction professionals.
The implications of this research extend beyond technical enhancements. By sourcing micro- and nano-cellulose from industrial waste, the study promotes a circular economy, offering a dual benefit of waste reduction and resource efficiency. This approach not only enhances the sustainability of construction materials but also presents commercial opportunities for businesses looking to innovate in the green building sector.
As the construction industry increasingly prioritizes sustainability, Guzmán’s research could pave the way for new standards in restoration practices. The ability to produce more resilient lime-based mortars could lead to a renaissance in the preservation of historical architecture while simultaneously addressing the pressing need for environmentally responsible building practices.
For more information about the research and its implications, you can visit the Department of Chemistry, Materials and Chemical Engineering ‘Giulio Natta’ at lead_author_affiliation.