Ferro-Cement:

Ferro-cement is a relatively new material consisting of wire meshes and cement mortar. It consists of closely spaced wire meshes which are impregnated with rich cement mortar mix. The ferro-cement members are commonly of 20 mm to 30 mm thickness along with 2 mm to 3 mm external covers to the reinforcement. The reinforcement or wire mesh is usually of 0.5 mm to 1 mm in diameter at 5 mm to 10 mm spacing and cement mortar is of cement sand of 1 : 2 or 1 : 3 with water-cement ratio 0.4 to 0.5. The steel quantities vary among 300 to 500 kg per m3 of mortar. The basic idea behind this material is that concrete can undergo large stains without cracks in the neighborhood of the reinforcement throughout the mass of the concrete.