Pre-stressed Cement Concrete

Here high tensile steel wires are used as reinforcement instead of mild steel bars. High tensile steel wires are stretched initially to the desired level and concrete is placed. After setting and completion of curing, the concrete is put into use. As the steel wires are initially stretched, the concrete so casted is known as pre-stressed concrete. This concrete is used in the manufacturing of railway sleepers and electric poles and in the construction of large span beams, large span bridge girders, etc.