Which statement best describes the primary benefit of using fiber reinforced plastic or zinc-coated reinforcing bars?

Which statement best describes the primary benefit of using fiber reinforced plastic or zinc-coated reinforcing bars?

• A. increased strength
• B. for corrosion resistance
• C. lower cost
• D. high water table

Answer: (B)

The main idea is corrosion resistance in reinforced concrete. Fiber reinforced plastic (FRP) bars and zinc-coated (galvanized) bars are used because they resist rust and deterioration that plain steel experiences when embedded in concrete, especially in environments with moisture and chlorides. FRP is non-metallic, so it won’t corrode in concrete, which means a longer service life and lower maintenance. Zinc coating protects the steel by forming a barrier and acting as a sacrificial layer, slowing down corrosion. This durability benefit—extending life and reducing repairs—is why they’re chosen. While strength, cost, or other factors can matter, corrosion resistance is the primary advantage in most applications.

The main idea is corrosion resistance in reinforced concrete. Fiber reinforced plastic (FRP) bars and zinc-coated (galvanized) bars are used because they resist rust and deterioration that plain steel experiences when embedded in concrete, especially in environments with moisture and chlorides. FRP is non-metallic, so it won’t corrode in concrete, which means a longer service life and lower maintenance. Zinc coating protects the steel by forming a barrier and acting as a sacrificial layer, slowing down corrosion. This durability benefit—extending life and reducing repairs—is why they’re chosen. While strength, cost, or other factors can matter, corrosion resistance is the primary advantage in most applications.