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<p>Utilisation of alternative fine aggregates becomes crucial due to the demand. Besides, the use of river sand as fine aggregate in concrete is banned in several countries to protect riverbeds and water bodies. Consequently, the usage of crusher sand has been widely adopted. Studies on the combined use of crusher sand with waste glass powder are extremely limited. Hence, the present study focuses on the combined use of crusher sand and waste glass powder used concrete. This study examines the impact of waste glass powder as a substitute for fine aggregates&#xa0;in concrete. Concrete specimens&#xa0;were prepared&#xa0;by substituting crusher sand with waste glass powder in varied quantities of 10%, 20%, 30%, 40%, and 50% by weight. The mechanical and durability characteristics of waste glass used specimens were examined. The 10% waste glass used specimens&#xa0;exhibited enhanced compressive strength of 7.26% for 28&#xa0;days of curing compared to the control specimen. The enhancement in strength is attributed to the particle packing efficiency of finer glass particles and the pozzolanic reaction. The comparable split tensile strength was also observed for WGP10 specimens. Durability assessments revealed decreased water absorption in WGP specimens, with the most noticeable improvements occurring in the WGP10 specimen, where water absorption decreased by 3% compared to 4.5% in the control specimen, resulting in a 29% reduction in porosity. Similarly, the WGP10 specimen exhibited enhanced durability under unsaturated exposure conditions, evidenced by a sorptivity coefficient of 0.0034&#xa0;mm/√s, representing a 44% reduction compared with the control specimens. The improvements are primarily due to the filler effect of the ground glass particles, which reduce porosity and enhance resistance to external chemical aggression.</p>

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Sustainable reuse of waste glass as fine aggregates in concrete: an approach for reduction in river sand mining and eco-friendly construction

  • 期刊论文

  • 发表日期：

    2026年6月26日

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  • Premavathi Narayanan,
  • Bahurudeen Abdulsalam,
  • Senthilkumar Rajendran

摘要

Utilisation of alternative fine aggregates becomes crucial due to the demand. Besides, the use of river sand as fine aggregate in concrete is banned in several countries to protect riverbeds and water bodies. Consequently, the usage of crusher sand has been widely adopted. Studies on the combined use of crusher sand with waste glass powder are extremely limited. Hence, the present study focuses on the combined use of crusher sand and waste glass powder used concrete. This study examines the impact of waste glass powder as a substitute for fine aggregates in concrete. Concrete specimens were prepared by substituting crusher sand with waste glass powder in varied quantities of 10%, 20%, 30%, 40%, and 50% by weight. The mechanical and durability characteristics of waste glass used specimens were examined. The 10% waste glass used specimens exhibited enhanced compressive strength of 7.26% for 28 days of curing compared to the control specimen. The enhancement in strength is attributed to the particle packing efficiency of finer glass particles and the pozzolanic reaction. The comparable split tensile strength was also observed for WGP10 specimens. Durability assessments revealed decreased water absorption in WGP specimens, with the most noticeable improvements occurring in the WGP10 specimen, where water absorption decreased by 3% compared to 4.5% in the control specimen, resulting in a 29% reduction in porosity. Similarly, the WGP10 specimen exhibited enhanced durability under unsaturated exposure conditions, evidenced by a sorptivity coefficient of 0.0034 mm/√s, representing a 44% reduction compared with the control specimens. The improvements are primarily due to the filler effect of the ground glass particles, which reduce porosity and enhance resistance to external chemical aggression.