In the quest for sustainable and innovative construction materials, a recent study has uncovered a surprising ally: the humble glueberry fruit. Researchers, led by Patrick Zievie from the Department of Building Technology and Estate Management at Dr. Hilla Limann Technical University in Wa, Ghana, have explored the potential of glueberry fruit powder as a viscosity-modifying admixture for self-compacting concrete. The findings, published in the ‘Journal of Building Materials and Structures’ (translated as ‘Journal of Materials and Structures’), could pave the way for more eco-friendly and efficient concrete production, particularly in hotter climates.
Self-compacting concrete (SCC) is a high-performance material that flows under its own weight and fills formwork without the need for vibration. It offers significant advantages in terms of speed, ease of use, and improved surface finish. However, achieving the right viscosity is crucial for its performance. Traditional viscosity-modifying admixtures can be expensive and may have environmental drawbacks. This is where glueberry fruit powder steps in.
Zievie and his team investigated the effects of adding glueberry fruit powder to concrete mixes at varying percentages (0, 5, 10, 15, and 20% by weight of cement). They found that as the percentage of glueberry powder increased, so did the setting times, plastic viscosity, flowability, passing ability, and segregation resistance. “The glueberry fruit powder showed a remarkable ability to enhance the viscosity and workability of the concrete,” Zievie noted.
The study also revealed that the compressive and split tensile strengths of the concrete increased up to a 15% addition of glueberry powder, compared to the control mix. However, further addition beyond this point led to a decrease in strength. Water absorption was significantly reduced at the 15% addition level, indicating improved durability. “This suggests that glueberry fruit powder could be a viable and sustainable alternative to traditional admixtures,” Zievie explained.
The implications for the construction industry are substantial. Self-compacting concrete is widely used in complex and heavily reinforced structures, such as those found in the energy sector. The ability to produce SCC with a locally sourced, eco-friendly admixture could lead to cost savings and reduced environmental impact. Moreover, the improved performance in hotter environments makes it particularly relevant for regions with warm climates.
As the construction industry continues to seek sustainable and innovative solutions, the findings of this study offer a promising avenue for exploration. By harnessing the properties of glueberry fruit powder, builders and engineers may soon have a new tool in their arsenal to create more efficient and environmentally friendly structures. The research not only highlights the potential of glueberry fruit powder but also underscores the importance of exploring unconventional materials for modern construction challenges.