The lines of ZOLTEK fabrics are often utilized in the repair or upgrade of concrete structures including bridges, columns, and beams. ZOLTEK PX35 has enhanced load bearing capabilities which put less strain on infrastructure, provide cost and scheduling benefits through minimally invasive repair methods, and use non-corrosive materials with outstanding fatigue performance. The fabrics are saturated with epoxy and applied to the concrete structure using a wet layup process. The fabrics, in combination with appropriate saturating resins, are referred to as fiber reinforced polymer (FRP) systems.