In the bustling world of construction, the humble mortar might not grab headlines, but it’s the unsung hero that holds our buildings together. A recent study published by researchers at the University of Granada is set to shake up our understanding of these essential materials, with significant implications for the energy sector.
Dr. C. Parra-Fernández, leading the charge from the Department of Mineralogy and Petrology, has been delving into the microscopic world of mortars. The team’s work, published in the journal ‘Materiales de Construccion’ (Building Materials), focuses on the petrographic and petrophysical characterization of aerial and hydraulic mortars, the two main types used in construction and rehabilitation.
So, what’s the big deal? Well, it turns out that not all mortars are created equal. “The physical characteristics of mortars, which depend on their petrographic makeup, significantly impact their mechanical properties,” explains Parra-Fernández. This means that the right mortar for the job can save energy, reduce costs, and even improve the longevity of structures.
The study reveals that air lime mortars, while highly porous and breathable, are the least resistant. This makes them ideal for historic buildings where preservation of the original fabric is key. On the other hand, cement mortars are the tough guys of the group, highly resistant and impermeable. However, their lack of breathability can lead to trapped moisture and, ultimately, structural damage.
But here’s where it gets interesting. Natural hydraulic lime mortars, with their petrographic characteristics similar to cement mortars, offer a happy medium. They’re more impermeable and resistant than air lime mortars, but still breathable. This makes them an excellent choice for energy-efficient buildings, where controlling moisture and preventing heat loss are top priorities.
The energy sector is taking note. With the push towards net-zero buildings, the choice of mortar could make a significant difference. As Parra-Fernández puts it, “Understanding the physical behavior of mortars, from hardness and strength to fluid access and retention, is crucial for their most suitable applications.”
So, what does the future hold? This research could pave the way for smarter, more sustainable construction practices. By choosing the right mortar for the job, we can reduce energy consumption, lower costs, and even preserve our historic buildings. It’s a win-win situation, and it all starts with a closer look at the humble mortar.
As the construction industry continues to evolve, so too will our understanding of these essential materials. And with researchers like Parra-Fernández at the helm, the future of construction looks brighter than ever. So, the next time you look at a building, remember: it’s not just bricks and mortar—it’s science.
