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<p>Incorporating recycled coarse aggregate into concrete development not only meets landfill requirements but also promotes environmentally friendly and sustainable infrastructures. Among various methods for reinforcing and repairing concrete structural elements, ferrocement confinement (FC) stands out as highly adaptable. Its key advantages include affordability, widespread availability, and ease of production by ordinary labor. This research aims to assess the effectiveness of FC in construction practices in emerging nations. A detailed investigation examined the impact of FC wrapping on square-reinforced recycled aggregate concrete columns of different cross-sectional areas. Twenty-four concrete column specimens with varying diameters underwent axial compressive loading. Twelve samples were made with recycled aggregate concrete and FC confinement, while twelve served as control samples with natural aggregate concrete without FC confinement. The specimens were grouped into four categories, each maintaining a consistent slenderness ratio (1:6), to evaluate how column diameter affects the benefits of ferrocement confinement. Results showed that increasing the cross-sectional dimensions of the columns improved the stiffness of FC-confined samples. However, it slightly reduced the strength enhancement factor. Specifically, the strength enhancement factor for confined samples decreased from 2.33 Ks for 100 × 100&#xa0;mm columns to 2.14, 2.05, and 1.95 Ks for column sizes of 125&#xa0;mm, 150&#xa0;mm, and 175&#xa0;mm side lengths, respectively. Additionally, a cost–benefit analysis underscores the immediate feasibility and urgency for the construction sector to adopt this technique.</p>

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Strengthening of Variously Shaped Recycled Aggregate Concrete Columns Using Ferrocement Confinement

  • 期刊论文

  • 发表日期：

    2025年9月29日

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  • Muhammad Talha Amir,
  • Muhammad Usman Rashid,
  • Ali Raza,
  • Muhammad Rameez Sohail,
  • Wajid Ali Adil

摘要

Incorporating recycled coarse aggregate into concrete development not only meets landfill requirements but also promotes environmentally friendly and sustainable infrastructures. Among various methods for reinforcing and repairing concrete structural elements, ferrocement confinement (FC) stands out as highly adaptable. Its key advantages include affordability, widespread availability, and ease of production by ordinary labor. This research aims to assess the effectiveness of FC in construction practices in emerging nations. A detailed investigation examined the impact of FC wrapping on square-reinforced recycled aggregate concrete columns of different cross-sectional areas. Twenty-four concrete column specimens with varying diameters underwent axial compressive loading. Twelve samples were made with recycled aggregate concrete and FC confinement, while twelve served as control samples with natural aggregate concrete without FC confinement. The specimens were grouped into four categories, each maintaining a consistent slenderness ratio (1:6), to evaluate how column diameter affects the benefits of ferrocement confinement. Results showed that increasing the cross-sectional dimensions of the columns improved the stiffness of FC-confined samples. However, it slightly reduced the strength enhancement factor. Specifically, the strength enhancement factor for confined samples decreased from 2.33 Ks for 100 × 100 mm columns to 2.14, 2.05, and 1.95 Ks for column sizes of 125 mm, 150 mm, and 175 mm side lengths, respectively. Additionally, a cost–benefit analysis underscores the immediate feasibility and urgency for the construction sector to adopt this technique.