In the quest for sustainable construction materials, a groundbreaking study has emerged from the Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development, offering a glimpse into the future of eco-friendly building practices. Led by Humphrey Danso from the Department of Civil Engineering, the research delves into the potential of recycled waste glass particles (RWGP) and lime to enhance the properties of compressed earth blocks (CEBs). The findings, recently published in Discover Civil Engineering, could revolutionize the construction industry, particularly in the energy sector, by providing a durable, sustainable, and cost-effective alternative to traditional building materials.
Compressed earth blocks are not a new concept, but their widespread adoption has been hindered by concerns over durability and strength. Danso’s research addresses these issues head-on, demonstrating significant improvements in the physico-mechanical properties of CEBs when stabilized with RWGP and lime. “The incorporation of recycled waste glass particles and lime positively and significantly influenced the physico-mechanical properties of the CEBs,” Danso explains. This is a game-changer for the construction industry, particularly for energy-efficient buildings.
The study found that CEBs with 10% RWGP and 10% lime achieved the highest compressive strength, a crucial factor in determining a material’s ability to withstand loads. This represents a 90% improvement over unstabilized specimens, making these blocks a viable option for load-bearing structures. Moreover, the water absorption of these blocks was significantly reduced, enhancing their durability and resistance to weathering. “The 5% RWGP and lime CEBs achieved the lowest water absorption, which represents about 181% water absorption reduction,” Danso notes. This is particularly relevant for the energy sector, where buildings often require materials that can withstand harsh environmental conditions.
The tensile strength of the blocks was also improved, indicating better resistance to cracking and breaking under tension. This is a critical factor in the longevity of buildings, especially in regions prone to seismic activity. The microstructural analysis further supported these findings, showing no visible cracks in the 10% RWGP and lime specimens.
The implications of this research are vast. For the energy sector, the use of these stabilized CEBs could lead to the construction of more durable, energy-efficient buildings. The reduced water absorption means better insulation properties, leading to lower heating and cooling costs. Additionally, the use of recycled waste glass particles aligns with the growing trend towards circular economy principles, reducing waste and promoting sustainability.
Danso’s research, published in Discover Civil Engineering, opens up new avenues for future studies. Future research could assess the thermal and durability properties of these stabilized CEBs, further cementing their place in sustainable construction practices. As the world continues to grapple with the challenges of climate change and resource depletion, innovations like these offer a beacon of hope. They remind us that sustainability and durability do not have to be mutually exclusive; in fact, they can go hand in hand, paving the way for a greener, more resilient future.