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The physical and mechanical properties of mortar blended modified granite fine (MGF) was investigated. The granite fine (GF) was ground and seived particle size less than 45 micron then modified GF heated at temperature of 900°C and 1,050°C for 2 hours. Portland cement, Type 1 of mortar was partially replaced in the proportion of 0%, 5%, 10% and 15%wt. uncured and cured in water for 7 and 28 days. The MGF pastes had been examined on setting time, specific gravity and hydraulic temperature. The mortar specimens were determined on bulk density, Shore hardness and compressive strength and X-ray diffraction and scanning electron microscope. Experimental results revealed mortars blended 10% MGF at 1,050°C curing for 28 days given the highest compressive strength of 61 MPa. MGF was indicated to be an effective ceramic pigment and mineral admixture for mortars.
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