PC Steel Strand for Large-span High Way Bridges Construction

PC Steel Strand Composition:

PC steel strand is typically made of high-strength steel wires that are tightly wound together to form a single strand. These steel wires are commonly made from high-carbon steel and are coated with a layer of zinc to protect against corrosion.

Purpose in Highway Bridges:

Prestressing: PC steel strand is used to prestress concrete components in highway bridges. This means that the strand is placed under tension before the concrete is poured. When the concrete sets, it bonds tightly to the strand, creating compressive forces that counteract the tensile stresses that the bridge may experience during its lifespan. This makes the bridge more durable and able to support heavy loads.

Reinforcement: In addition to prestressing, PC strand is also used to reinforce various bridge elements, such as beams, girders, and other structural members. This reinforcement enhances the bridge's load-bearing capacity and overall stability.

Characteristics:

PC steel strand is known for its high tensile strength and excellent durability. It can withstand significant loads without elongation or breaking. The zinc coating provides corrosion resistance, which is crucial for structures exposed to outdoor elements.