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<p>Concerns about the environmental impact of cement production have driven the search for sustainable alternatives, including the incorporation of waste materials in concrete. This study explores the combined use of ceramic powder (CP), glass powder (GP), and eggshell powder (ESP) as partial cement replacements in sustainable high-performance concrete (SHPC) using the Mixture Design method a novel approach not previously applied to optimize all three materials together. Concrete mixtures were tested for workability, compressive strength, flexural strength, water permeability, and microstructure. The results show that incorporating 30% ESP and GP increases slump values by 128.6 and 57%, respectively, while 30% CP reduces workability by 42.9%. CP significantly improves compressive and flexural strength due to its pozzolanic activity, achieving a maximum compressive strength of 56.55 MPa and flexural strength of 9.18 MPa at 30% CP. In contrast, higher ESP levels reduce strength and increase permeability due to limited reactivity. Optimal performance was achieved with 3.33% ESP, 0% GP, and 26.67% CP, balancing strength (56.55 MPa) and workability (45.6 mm slump). The mix of 20% CP, 5% GP, and 5% ESP improved impermeability and microstructure, reducing porosity and cracks as confirmed by SEM analysis. Additionally, the mixes incorporating the blended waste materials showed reductions in CO<sub>2</sub> emission between 25.7 and 28.3% and significance cost saving compared to the control mix. Predictive models developed through ANOVA demonstrated high accuracy with R<sup>2</sup> and R<sup>2</sup>pred values exceeding 95% for all key properties, validating the reliability of the proposed approach for practical applications.</p>

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Sustainable high-performance concrete with waste ceramic, glass, andeggshell: optimization and prediction

  • 期刊论文

  • 发表日期：

    2025年9月15日

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  • Walid E. Elemam

摘要

Concerns about the environmental impact of cement production have driven the search for sustainable alternatives, including the incorporation of waste materials in concrete. This study explores the combined use of ceramic powder (CP), glass powder (GP), and eggshell powder (ESP) as partial cement replacements in sustainable high-performance concrete (SHPC) using the Mixture Design method a novel approach not previously applied to optimize all three materials together. Concrete mixtures were tested for workability, compressive strength, flexural strength, water permeability, and microstructure. The results show that incorporating 30% ESP and GP increases slump values by 128.6 and 57%, respectively, while 30% CP reduces workability by 42.9%. CP significantly improves compressive and flexural strength due to its pozzolanic activity, achieving a maximum compressive strength of 56.55 MPa and flexural strength of 9.18 MPa at 30% CP. In contrast, higher ESP levels reduce strength and increase permeability due to limited reactivity. Optimal performance was achieved with 3.33% ESP, 0% GP, and 26.67% CP, balancing strength (56.55 MPa) and workability (45.6 mm slump). The mix of 20% CP, 5% GP, and 5% ESP improved impermeability and microstructure, reducing porosity and cracks as confirmed by SEM analysis. Additionally, the mixes incorporating the blended waste materials showed reductions in CO2 emission between 25.7 and 28.3% and significance cost saving compared to the control mix. Predictive models developed through ANOVA demonstrated high accuracy with R2 and R2pred values exceeding 95% for all key properties, validating the reliability of the proposed approach for practical applications.