Exploring Rice Husk Ash in Uncontrolled Condition as Supplementary Cementitious Materials for Enhanced Performance in Construction Materials

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This study demonstrates improved mechanical performance in concrete using rice husk ash, suggesting it as a sustainable alternative.

A 10% replacement of ordinary portland cement with rice husk ash yielded the best compressive strength at 22.06 MPa, enhancing concrete durability.
Mechanical tests conducted at 7, 14, and 28 days confirmed that introducing rice husk ash enhances pozzolanic activity, improving tensile strength over time.
Microstructural analyses using X-ray Diffraction and Scanning Electron Microscopy showed RHA's favorable morphology, underpinning its potential as a green material.
Incorporating RHA not only lowers cement usage but also helps manage agricultural waste, indicating a significant step toward eco-friendly construction practices.

Khan et al. (2025) studied this question.

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