Zeal Pavers & Tiles manufacturers Fly Ash Brick are machine made manufactured by Hydraulic and vibratory press machines. Fly Ash Brick (FAB) is a building material, specifically masonry units, containing class C fly ash and water. Compressed at 28 MPa (272 atm) and cured for 24 hours in a 66 °C steam bath, then toughened with an air entrainment agent, the bricks last for more than 100 freeze-thaw cycles. Owing to the high concentration of calcium oxide in class C fly ash, the brick is described as "self-cementing". Our Fly Ash Brick Manufacturers method saves energy, reduces mercury pollution, and costs 20% less than traditional clay brick manufacturing.