Why is PC Strand used in bridges?
Pre-stressed concrete (PC) strands play a crucial role in the construction of bridges due to their unique properties that enhance the structural integrity and load-bearing capacity of these critical infrastructures. PC strands are high-strength steel cables commonly used in pre-stressed concrete elements, and their application in bridges is driven by several key factors: Strength and Durability: PC strands are typically made from high-strength, low-relaxation steel. This composition ensures that the strands can withstand heavy loads and resist fatigue, contributing to the long-term durability of the bridge structure. The high tensile strength of PC strands allows for the creation of pre-stressed concrete elements that can handle significant loads without deformation. Pre-stressing for Increased Load Capacity: The primary purpose of using PC strands in bridges is to introduce pre-stressing into the concrete elements. Pre-stressing involves applying forces to the concrete bef...