Why FRP is More Impact-Resistant Than Traditional Materials

Impact resistance is one of the key advantages of FRP over cast iron, concrete, and steel. Unlike brittle materials that crack or shatter under sudden force, FRP absorbs and distributes impact energy effectively, reducing breakage risks.

Why FRP Has Superior Impact Resistance:

• Elasticity & Flexibility: FRP bends slightly under stress, preventing cracks and fractures.

• Layered Composite Structure: The fiberglass mesh within the polymer absorbs shock, dispersing force over a larger area.

• High Toughness-to-Weight Ratio: FRP is lighter than metal but can endure heavy vehicle loads and extreme weather conditions without weakening.

• Chemical & Weather Resistance: Unlike concrete, which can degrade from moisture or chemicals, FRP remains intact even in corrosive environments.

Because of these properties, FRP manhole covers last significantly longer than traditional materials, reducing maintenance and replacement costs for cities.