What is the primary purpose of using fiber reinforced plastic or zinc-coated reinforcing bars in construction?

What is the primary purpose of using fiber reinforced plastic or zinc-coated reinforcing bars in construction?

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

Answer: (A)

Corrosion resistance is the primary reason for using fiber reinforced plastic or zinc-coated reinforcing bars. FRP bars are nonmetallic and don’t rust in moist concrete or in environments with chlorides and carbonation, which greatly enhances durability and service life. Zinc-coated bars provide a protective coating that slows rust on steel in the presence of moisture and chlorides. While these materials can offer other benefits, such as specific strength characteristics, they aren’t chosen mainly for lower cost or simply to increase strength, and a high water table isn’t relevant to the reinforcement choice.

Corrosion resistance is the primary reason for using fiber reinforced plastic or zinc-coated reinforcing bars. FRP bars are nonmetallic and don’t rust in moist concrete or in environments with chlorides and carbonation, which greatly enhances durability and service life. Zinc-coated bars provide a protective coating that slows rust on steel in the presence of moisture and chlorides. While these materials can offer other benefits, such as specific strength characteristics, they aren’t chosen mainly for lower cost or simply to increase strength, and a high water table isn’t relevant to the reinforcement choice.