SPECTER HP synthetic Micro Fibers are “best-in-class”, next-generation polypropylene microfibers for concrete reinforcement. This unique technology combines ultra-thin diameter with high strength, resulting in the highest level of plastic shrinkage crack prevention available. Over one hundred million high tensile and high modulus filaments per yard of SPECTER HP create an extremely dense, three-dimensional network in any cementitious application.

SPECTER™ HP Synthetic Micro Fibers are manufactured from 100% virgin homopolymer polypropylene resins. SPECTER™ HP Fibers meet the requirements of ASTM C1116/C1116M “Standard Specification for Fiber- Reinforced Concrete” and the requirements of ICC ES AC32 Section 3.1.1 for plastic shrinkage reinforcement.

Features and Benefits

• Inhibits and controls the formation of intrinsic cracking in concrete
• Reduces plastic shrinkage cracking by an average of 90% at the specified dosage rate
• Reduces concrete permeability and increases the durability and service life of the concrete
• Provides three-dimensional reinforcement against micro-cracking
• Increases the impact and abrasion resistance of the concrete
• Performs as an excellent companion in blends with macro synthetic fibers and steel fibers