Year: 2025 | Month: July | Volume: 12 | Issue: 7 | Pages: 107-114
DOI: https://doi.org/10.52403/ijrr.20250712
Characterization of the Influence of Fly Ash on The Mechanical Behavior of Compressed Earth Bricks
Serigne DIOP1, Oustasse Abdoulaye SALL1, Diogoye DIOUF1, Makhaly BA2
1Department of Civil Engineering, UFR SI-University of Thiès, Thiès, Senegal
2Department of Geotechnics, UFR SI-University of Thiès, Thiès, Senegal
Corresponding Author: Serigne DIOP
ABSTRACT
The aim of this project was to valorize fly ash for use in compressed earth bricks. Indeed, fly ash from the bargny coal-fired power plant is renowned for its pozzolanic character and is used as an additive at various contents (5%, 10%, 15% and 20%) to earth for the production of compressed earth bricks (CEB). On the other hand, CEM II/B cement was used as a soil additive at different stabilizing contents (1%, 1.5% and 2%). A physico-chemical and geotechnical characterization of the materials used was carried out, followed by formulation and manufacture of bricks by dynamic compression of the optimum mix obtained using a press. Bricks were then pre-conditioned and mechanically characterized to determine compressive strengths at 14 and 28 days. The results showed that the mechanical performance of CEB decreases with increasing ash content and increases with increasing cement content.
Keywords: Valorization, Fly ash, Pozzolanic, CEB, Characterization, Strength
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