In the heart of Karachi, Pakistan, a groundbreaking study led by Ruhal Pervez Memon from the Department of Civil Engineering at Dawood University of Engineering and Technology is set to revolutionize the construction industry, particularly in the energy sector. The research, published in the Mehran University Research Journal of Engineering and Technology (known in English as the Mehran University Research Journal of Engineering and Technology), explores the potential of self-curing concrete, a innovation that could significantly reduce water usage and enhance the durability of structures.
The study focuses on the use of polyethylene glycol 400 (PEG-400) as a self-curing agent in concrete. “We are facing severe water shortages, and traditional curing methods are no longer sustainable,” explains Memon. “Our research aims to address this issue by developing self-curing concrete that can maintain its performance and longevity without relying on excessive water resources.”
The investigation involved testing various concentrations of PEG-400 in M30 grade concrete. The results were promising, with the optimal concentration of 0.5% by weight of cement yielding a maximal strength of 47.87 MPa and a workability of 70 mm. This is a significant improvement over the baseline strength of 37.35 MPa observed at 0% PEG-400.
One of the most compelling aspects of this research is its potential impact on the energy sector. Structures in this sector often require high-performance materials that can withstand extreme conditions. The study found that the self-curing concrete exhibited superior thermal resistance, with a residual compressive strength loss of only 15.56% at 1000°C, compared to 38.17% in conventional concrete. “This makes self-curing concrete an excellent choice for energy infrastructure, where fire resistance and durability are paramount,” Memon notes.
The commercial implications are substantial. The energy sector could see significant cost savings by adopting self-curing concrete, as it reduces the need for water-intensive curing processes and enhances the longevity of structures. This could lead to more sustainable and resilient energy infrastructure, capable of withstanding extreme temperatures and harsh environmental conditions.
The research also highlights the potential for self-curing concrete to minimize spalling, a common issue in conventional concrete when exposed to high temperatures. Concrete samples containing 0.5% PEG-400 showed minimal evidence of spalling when heated up to 1000°C, further emphasizing its suitability for high-performance applications.
As the world grapples with water scarcity and the need for sustainable construction practices, this research offers a glimmer of hope. The findings could pave the way for widespread adoption of self-curing concrete, not only in the energy sector but also in other industries where durability and performance are critical. “Our goal is to contribute to a more sustainable future,” Memon concludes. “By reducing water usage and enhancing the performance of concrete, we can make a significant impact on the environment and the economy.”
The study, published in the Mehran University Research Journal of Engineering and Technology, is a testament to the innovative spirit of researchers like Memon, who are dedicated to pushing the boundaries of construction technology. As the energy sector continues to evolve, the adoption of self-curing concrete could become a game-changer, ensuring that our infrastructure is not only resilient but also sustainable for generations to come.