What question did this study set out to answer?

The aim is to evaluate wood ash and crushed clay blocks as sustainable materials in concrete production.

Performance and Sustainability of Concrete Incorporating Wood Ash and Crushed Clay Blocks: An Experimental Study

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Experimental study demonstrates that using wood ash and crushed clay blocks enhances concrete sustainability and performance.

The aim is to evaluate wood ash and crushed clay blocks as sustainable materials in concrete production.
Produced twelve concrete mixtures using varying levels of wood ash (0%, 10%, 20%, 30%) and crushed clay blocks (0%, 50%, 100%)
Evaluated concrete's workability, compressive strength, and microstructural characteristics using several tests
Applied scanning electron microscopy to assess microstructural changes
10% wood ash replacement achieved the highest compressive strength of 50.58 MPa at 56 days, an 11% improvement over control
20% wood ash improved microstructural densification through pozzolanic reactions, while higher levels increased porosity
10% wood ash and 50% crushed clay blocks provided the best balance of mechanical performance and sustainability

Fathi et al. (2026) studied this question.

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