In the fast-paced world of construction, timing is everything. A recent study published in the Brazilian Journal of Structures and Materials, has shed new light on how the timing of mortar use can significantly impact its hardened state properties. This research, led by Daniela Dias, could have profound implications for the energy sector, where the durability and efficiency of building materials are paramount.
Mortar, a staple in construction, is often used over extended periods. However, until now, the effects of this delayed use on its final properties have been poorly understood. Dias and her team set out to change that, focusing on mortars with a 72-hour stabilization period. Their findings, while complex, paint a clear picture of the importance of timely application.
The study evaluated mortars at four different time intervals: immediately after mixing (0 hours), and at 24, 48, and 72 hours later. In the fresh state, the variations were minimal. “We saw a decrease in the consistency index by 11%, an increase in mass density by 2.74%, and a decrease in incorporated air content by 2.3%,” Dias explained. However, the real surprises came when the team examined the hardened state properties.
From 48 to 72 hours, the properties of the mortar changed dramatically. The modulus of elasticity, a measure of the mortar’s stiffness, decreased by 32.7%. Similarly, the flexural tensile strength, which indicates the mortar’s ability to resist bending, dropped by 20%. Compressive strength, a crucial factor in the mortar’s load-bearing capacity, fell by 28%. Perhaps most importantly for the energy sector, the adhesive strength of the mortar to ceramic substrates decreased by 30%. This could significantly impact the longevity and efficiency of energy-saving building envelopes.
So, what does this mean for the energy sector? In an industry where every percentage point of efficiency counts, these findings could be a game-changer. Buildings account for a significant portion of global energy consumption, and improving the durability and performance of building materials could lead to substantial energy savings. Moreover, understanding these changes could help in developing new mortars with extended stabilization periods, reducing waste and improving sustainability.
The study, published in the Revista IBRACON de Estruturas e Materiais, which translates to the Brazilian Journal of Structures and Materials, opens up new avenues for research and development. As Dias puts it, “This is just the beginning. We hope our work will stimulate further research into the effects of time on mortar properties and lead to the development of more efficient, sustainable building materials.”
For the energy sector, this research could shape future developments in building design and construction. By understanding and mitigating the effects of delayed mortar use, we can build more durable, energy-efficient structures. As the world continues to grapple with climate change, every bit of efficiency counts. And as Dias’s research shows, sometimes, the key to a more sustainable future lies in the details – in this case, the timing of mortar use.