In the heart of Thailand, researchers are turning agricultural and industrial waste into a high-performance construction material, offering a promising solution to the dual challenges of waste management and sustainable building practices. Dr. S. Puttala, from the Department of Civil Engineering and Architecture at Sakon Nakhon Rajabhat University, has led a groundbreaking study that could reshape the future of construction materials, particularly in the energy sector.
The study, published in the Journal of Applied Science and Engineering (Rattakan Boran Wichakan, in English), focuses on the development of a geopolymer mortar using bagasse ash (BA), a byproduct of sugar production, as its primary precursor. “We saw an opportunity to transform these waste materials into something valuable,” Dr. Puttala explains. “Bagasse ash is often discarded, but it has excellent potential as a construction material.”
The research team incorporated water hyacinth fiber (WHF) and limestone dust (LSD) into the geopolymer mortar, creating a composite material with enhanced properties. The results were impressive: while the control geopolymer exhibited a compressive strength of 30 MPa after 28 days, the addition of 1.25% WHF significantly increased the flexural strength by 80%. “The incorporation of these waste materials not only improves the mechanical properties but also contributes to a more sustainable construction industry,” Dr. Puttala notes.
High-temperature curing at 100°C accelerated the early strength development of the geopolymer mortar, reaching 35 MPa after just 7 days. This rapid strength gain could have significant implications for the energy sector, where quick-turnaround projects are often prioritized. “This technology could be particularly beneficial for prefabricated construction and energy infrastructure projects,” Dr. Puttala suggests.
The use of waste-derived materials in construction offers a sustainable alternative to traditional cement-based mortars, reducing the environmental impact of the construction industry. As the world grapples with the challenges of climate change and resource depletion, innovative solutions like this one are crucial. “We hope that our research will inspire further exploration of waste-derived materials in construction,” Dr. Puttala concludes.
This study not only highlights the potential of waste materials in construction but also paves the way for future developments in sustainable building practices. As the energy sector continues to evolve, the demand for eco-friendly and high-performance construction materials is expected to grow. This research could be a game-changer, offering a viable solution that benefits both the environment and the industry.