Construction / Concrete Brick Moulds. Available in Multiple Cavity Viraj Introduces Mould for Construction Bricks Moulds which is substitute to Clay Bricks & Fly Ash bricks. Advantages of Viraj Bricks : 1) Solid and Strong Construction (Build to Last) 2) Innovative Concrete Home Building System 3) Environmentally Friendly 4) Limitless Possibilities 5) Minimizes Property Damages 6) Fire Protection 7) Customized Product 8) Less Inventory as curing is not required. 9) Fast Construction