Eggshell powder replaced 10% of cement and strengthened mortar after 28 days
Researchers found waste eggshells can become a fine powder for mortar.
This powder replaced cement, showing no reduction in compressive strength.
The strongest results occurred when ten percent eggshell powder was used.
Higher amounts increased porosity and weakened the mortar's internal structure.
This study highlights a sustainable method for construction materials.
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