Fiber reinforcement in cement and concrete involves the addition of discrete fibers—made from materials such as steel, glass, synthetic polymers, or natural fibers—to the concrete mix to enhance its structural and functional properties. These fibers are uniformly distributed throughout the concrete, providing reinforcement at the microlevel. They act to inhibit the propagation of cracks and enhance both the tensile and flexural strengths of the concrete. This is particularly important under dynamic loading conditions and in environments where concrete may be subject to impact, thermal stress, and chemical attack.