In the ever-evolving world of construction materials, a groundbreaking study led by Fatiha Bendjilali from the Civil Engineering Department at the University of Hassiba Benbouali in Chlef, Algeria, is set to revolutionize the way we approach concrete repair and rehabilitation. The research, published in the Journal of Engineered Fibers and Fabrics (Journal of Engineered Fibers and Fabrics), delves into the combined effect of marble powder and polypropylene fiber on the properties of self-compacting repair mortar (SCRM). The findings could have significant implications for the energy sector, where the durability and longevity of structures are paramount.
The study explores the use of marble powder as a partial replacement for cement in SCRM, aiming to reduce cement consumption, conserve natural resources, and minimize waste. Bendjilali and her team prepared six different SCRM mixtures, each with varying percentages of marble powder (0%, 10%, 15%, 20%, 25%, and 30%) and reinforced with polypropylene fibers. The results are nothing short of remarkable.
One of the key findings is that the addition of polypropylene fibers significantly enhances the workability of the fresh mortar. This is a game-changer for the construction industry, as improved workability means easier application and better performance of repair materials. “The combined use of PPF and MP showed good mechanical properties of SCRM which fulfilling the requirements of class R4 materials for structural repair products,” Bendjilali noted, highlighting the potential of this innovative approach.
The study also revealed that while the elasticity modulus decreased with an increase in marble powder content, there was a strong correlation between the elasticity modulus and compressive strength. This finding is crucial for engineers and architects who need to ensure the structural integrity of repaired buildings and infrastructure.
Perhaps the most exciting discovery is the optimal dosage of marble powder. The research found that a 15% replacement of cement with marble powder provides a 20% gain in adhesion strength. This is a significant breakthrough, as adhesion strength is critical for the durability and longevity of repaired structures. “Adhesion test indicated that 15% of MP is the optimum dosage which provides 20% of gain in adhesion strength,” Bendjilali explained, underscoring the practical applications of the research.
For the energy sector, these findings could mean more durable and long-lasting structures, reducing the need for frequent repairs and maintenance. This not only saves costs but also ensures the continuous and safe operation of energy infrastructure. The use of marble powder as a supplementary cementitious material aligns with the industry’s push towards sustainability and resource conservation.
The implications of this research are far-reaching. As the construction industry continues to seek more sustainable and efficient materials, the findings from Bendjilali’s study could pave the way for new standards and practices in concrete repair and rehabilitation. The energy sector, in particular, stands to benefit from these advancements, ensuring that critical infrastructure remains robust and reliable for years to come. With the publication of this research in the Journal of Engineered Fibers and Fabrics, the construction industry is one step closer to a more sustainable and efficient future.
