In the heart of Chile, a groundbreaking study is reshaping how we think about sustainable construction materials. Leonardo Sierra-Varela, a researcher from the Department of Civil Engineering at the Universidad de La Frontera, has developed a novel approach to assess the social sustainability of asphalt additives. His work, published in Applied Sciences, focuses on the potential of repurposing end-of-life tire textile fibers (TfELTs) into sustainable asphalt mixes, offering a glimpse into a future where waste becomes a valuable resource.
Sierra-Varela’s research delves into the often-overlooked social dimension of sustainability, which includes equity, well-being, and justice for communities. “Social sustainability ensures that our infrastructure benefits present and future generations,” Sierra-Varela explains. “It’s about creating a more resilient and responsible construction sector.”
The study introduces a fuzzy cognitive map (FCM) to evaluate the social impacts of different asphalt additives, including aramid fiber, fiberglass, polyester fiber, and a novel additive called Fityre, derived from TfELTs. FCMs combine fuzzy logic and neural networks to handle complexity and uncertainty, making them ideal for assessing the intricate web of social indicators.
One of the standout findings is the potential of Fityre to significantly enhance social sustainability. “Fityre not only reduces waste but also improves the mechanical properties of asphalt mixtures,” Sierra-Varela notes. “It’s a win-win situation for both the environment and the economy.”
The implications for the energy sector are profound. Asphalt production is energy-intensive, and incorporating sustainable additives like Fityre can reduce the carbon footprint of construction projects. Moreover, the use of locally sourced materials can lower transportation costs and support local economies, aligning with Chile’s national regulations on end-of-life tire management.
The study’s methodology involves a three-stage process: qualitative exploration, construction of a fuzzy cognitive model, and dynamic analysis of the additives. This approach allows for a comprehensive assessment of the social contributions of each additive, considering factors like consumer interest, innovation, knowledge transfer, and regulatory alignment.
Sierra-Varela’s work is part of a broader trend towards circular economy initiatives, where waste is minimized, and resources are kept in use for as long as possible. “By repurposing textile fibers from end-of-life tires, we’re not only reducing waste but also creating a more sustainable and socially responsible construction sector,” he says.
The research highlights the importance of considering the social dimension in sustainability assessments. “It’s not just about the environment or the economy; it’s about the people,” Sierra-Varela emphasizes. “Social sustainability is crucial for creating infrastructure that truly benefits communities.”
As the construction industry continues to evolve, Sierra-Varela’s work offers a roadmap for integrating social sustainability into the development of new materials. The use of FCMs provides a robust framework for assessing the complex interactions between social indicators, paving the way for more holistic and responsible construction practices.
In an era where sustainability is no longer a choice but a necessity, Sierra-Varela’s research serves as a beacon of innovation. By focusing on the social dimension, he challenges the industry to think beyond the immediate benefits and consider the long-term impacts on communities. As the world grapples with the challenges of climate change and resource depletion, his work offers a glimpse into a future where sustainability is not just a goal but a way of life.
The study, published in Applied Sciences, is a testament to the power of interdisciplinary research. By combining engineering, social science, and environmental studies, Sierra-Varela has developed a model that has the potential to revolutionize the construction industry. As the world looks towards a more sustainable future, his work serves as a reminder that the path to sustainability is not just about technology and innovation but also about people and communities.
