then the mould is removed. Then the wet brick was kept under air curing for 2 days and then bricks were water cured for a period of 7,14,21 days. The Fig. 3 -11 shows the materials used and mixing of materials to cast the brick. Fig. 3 Brick Hand Mould Fig. 4 Fly ash Fig. 5 Quarry dust Fig. 6 Gypsum
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