Polymacro®, produced from 100% pure polypropylene, is a macro synthetic fiber product specially designed to increase strength and flexural performance in shotcrete, tunnel linings, and railway sub-base concretes. Homogeneous fiber distribution enables energy dissipation at any point and in any direction within the concrete and significantly increases crack resistance. With its high-performance structure, it provides maximum durability without corrosion risk. Polymacro® PM54 also provides significant savings in operational and labor costs by shortening application time.