In a groundbreaking study, researchers from the Civil Engineering Department at the University of Djelfa, Algeria, have turned their attention to the abundant sand dunes in the Djelfa region, revealing their potential for enhancing pavement foundations. This innovative approach not only addresses local material utilization but also promises significant commercial benefits for the construction sector.
Lead author Ali Smaida and his team have developed a formulation method that stabilizes dune sand through a mixture of two hydraulic binders. This technique could revolutionize how materials are sourced and used in road construction, particularly in areas where high-quality aggregates are scarce or expensive to procure. “Our findings indicate that the mechanical characteristics of certain mixtures can meet the rigorous demands of road foundations,” Smaida stated, emphasizing the practicality of using local resources.
The research involved an extensive series of tests, including grain size distribution, modified Proctor compaction, shear strength assessment, and both unsoaked and soaked California Bearing Ratio (CBR) tests. The results have shown that the treated dune sand can achieve remarkable mechanical properties, making it a viable alternative to conventional materials.
The implications of this study are profound. As the construction industry increasingly seeks sustainable practices, the valorization of local materials like dune sand could lead to reduced transportation costs and lower environmental impact. “By utilizing local resources, we not only cut down on costs but also contribute to sustainable development in the region,” Smaida added.
This research, published in the ‘Journal of Building Materials and Structures’, highlights a significant step towards innovation in construction material science. As the industry grapples with rising material costs and environmental concerns, the findings from Djelfa could pave the way for new standards in pavement construction, potentially influencing practices beyond Algeria.
For more information about this research and its implications, you can visit the University of Djelfa’s website at lead_author_affiliation.