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<p>This study investigates the optimization of M<sub>20</sub> grade sustainable concrete incorporating Recycled Concrete Aggregate (RCA) and Waste Glass Powder (WGP) through statistical validation. The experimental program evaluated mix designs incorporating varying percentages of RCA (28–40%) and WGP (15–30%) for mechanical and durability properties. Statistical analysis revealed strong correlations between strength parameters (R<sup>2</sup> &gt; 0.91) and durability indicators. The optimal mix incorporating 30% RCA and 20% WGP achieved 32.8&#xa0;MPa compressive strength at 28&#xa0;days, demonstrating viable performance for structural applications including load-bearing elements and reinforced concrete members. Durability assessment indicated controlled increases in water absorption (5.28–8.85%) and sorptivity (2.91–4.45&#xa0;mm/√min) at optimal replacement levels. This research provides a statistically validated framework for incorporating dual waste materials in structural concrete while maintaining essential performance requirements.</p>

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Dual-Waste Valorization in Concrete: A Statistical Framework for RCA-WGP Integration

  • 期刊论文

  • 发表日期：

    2025年7月8日

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  • Sphurty Raman,
  • Raman Nateriya

摘要

This study investigates the optimization of M20 grade sustainable concrete incorporating Recycled Concrete Aggregate (RCA) and Waste Glass Powder (WGP) through statistical validation. The experimental program evaluated mix designs incorporating varying percentages of RCA (28–40%) and WGP (15–30%) for mechanical and durability properties. Statistical analysis revealed strong correlations between strength parameters (R2 > 0.91) and durability indicators. The optimal mix incorporating 30% RCA and 20% WGP achieved 32.8 MPa compressive strength at 28 days, demonstrating viable performance for structural applications including load-bearing elements and reinforced concrete members. Durability assessment indicated controlled increases in water absorption (5.28–8.85%) and sorptivity (2.91–4.45 mm/√min) at optimal replacement levels. This research provides a statistically validated framework for incorporating dual waste materials in structural concrete while maintaining essential performance requirements.