Eggshell and Walnut Shell in Unburnt Clay Blocks

Agricultural residues/by-products have become a popular choice for the manufacturing of building materials due to their cost-effectiveness and environmental friendliness, making them viable option achieving sustainability in construction sector. This study addresses utilisation two agro-wastes, i.e., eggshell walnut shell, manufacture unburnt clay blocks. The experiments were carried out on three series samples which first (10–50%) shell (5–20%) incorporated individually then combined (5% walnut, 10–30% eggshell) mixture assess influences physical mechanical properties performed following tests: Density, capillary water absorption, linear shrinkage, flexural compressive strength. results indicated that enhanced strength relative control sample when employed individually, but lowered it. Moreover, combining mixer reduced even further. Nevertheless, inclusion waste decreased density, absorption coefficient shrinkage samples. findings indicate has great potential block manufacture. However, integration needs further research.