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<p>Using ash from organic materials to enhance pozzolanic activity is a promising method for improving concrete performance. This study investigates the workability, mechanical strength, and microstructure of concrete incorporating Sugarcane Bagasse Ash (SCBA) as an admixture. Unlike most studies that partially replace cement with SCBA, this research maintains the full cement content and adds SCBA in small proportions (1.5%, 3%, 4.5%, 6%, and 7.5% by weight of cement) to benefit from its pozzolanic reactivity without reducing the primary binder. Tests included slump test, compressive strength, splitting tensile strength, and flexural strength, along with microstructural analysis using SEM, FTIR and Petrographic Examination (Microstructure investigation by polarizing microscope) Results showed that SCBA enhanced early-age strength and contributed to a denser, more cohesive matrix, with the 4.5% SCBA mix exhibiting the best overall performance. SEM images revealed improved particle packing and reduced porosity. This approach presents SCBA as a sustainable admixture that improves performance and supports microstructural development without compromising cement content. This method not only improvements concrete quality but also promotes eco-friendly construction by recycling agricultural waste and reducing environmental impact.</p>

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Sustainable concrete incorporating sugarcane Bagasse ash: a study on workability, mechanical behavior, and microstructure

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月13日

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  • Nesreen Elawadly,
  • Samah A. Sanad

摘要

Using ash from organic materials to enhance pozzolanic activity is a promising method for improving concrete performance. This study investigates the workability, mechanical strength, and microstructure of concrete incorporating Sugarcane Bagasse Ash (SCBA) as an admixture. Unlike most studies that partially replace cement with SCBA, this research maintains the full cement content and adds SCBA in small proportions (1.5%, 3%, 4.5%, 6%, and 7.5% by weight of cement) to benefit from its pozzolanic reactivity without reducing the primary binder. Tests included slump test, compressive strength, splitting tensile strength, and flexural strength, along with microstructural analysis using SEM, FTIR and Petrographic Examination (Microstructure investigation by polarizing microscope) Results showed that SCBA enhanced early-age strength and contributed to a denser, more cohesive matrix, with the 4.5% SCBA mix exhibiting the best overall performance. SEM images revealed improved particle packing and reduced porosity. This approach presents SCBA as a sustainable admixture that improves performance and supports microstructural development without compromising cement content. This method not only improvements concrete quality but also promotes eco-friendly construction by recycling agricultural waste and reducing environmental impact.