In a groundbreaking study published in “Results in Engineering,” researchers have unveiled a promising eco-friendly solution for improving sandy soil stability, a significant development for the construction and civil engineering sectors. The research, led by Alireza Tabarsa from the Department of Civil Engineering at Golestan University in Iran, focuses on the use of Tragacanth gum (TG), a natural biopolymer, as a sustainable alternative to traditional soil stabilizers like cement.
As the construction industry grapples with the dual challenges of environmental sustainability and soil degradation, TG emerges as a beacon of hope. Traditional stabilizers are notorious for their high greenhouse gas emissions, which contribute to climate change and environmental damage. In contrast, TG offers a greener approach, aligning with global efforts to reduce the carbon footprint of construction practices.
Tabarsa’s research investigates the effects of varying concentrations of TG—0.5%, 1%, and 2% by weight—on the mechanical properties of low-strength sandy soil. The findings are remarkable: the unconfined compressive strength (UCS) of the treated soil increased from 20 kPa to an impressive 72 kPa, depending on the dry unit weight. This enhancement in strength is crucial for construction projects, particularly in areas where sandy soil predominates.
“The results indicate that TG not only improves the cohesion of sandy soils but also significantly increases the internal friction angle,” Tabarsa explained. “This means that we can achieve better load-bearing capacities and overall stability in our construction projects, which is essential for infrastructure development.”
The study’s results highlight an increase in cohesion from 8 kPa to 53 kPa and an internal friction angle rise from 30.88° to 46.64°—both critical factors in ensuring the structural integrity of pavements and other geotechnical applications. With these improvements, construction companies can expect enhanced performance and durability in their projects, potentially reducing maintenance costs and increasing safety.
As the construction sector increasingly prioritizes sustainable practices, the implications of this research are profound. By incorporating TG into soil stabilization processes, companies can not only mitigate their environmental impact but also improve the quality and longevity of their infrastructure. The commercial viability of such eco-friendly solutions could reshape industry standards, leading to a broader acceptance of biopolymer applications in construction.
Tabarsa’s work opens new avenues for research and application in geotechnics, paving the way for innovative materials that harmonize with environmental goals. As the construction industry looks to the future, the integration of biopolymers like Tragacanth gum could very well become a standard practice, contributing to a more sustainable and resilient built environment.
For further insights into this research, you can visit Golestan University, where Tabarsa and his team continue to explore advancements in civil engineering.