Method for preparing polyester fibers for reinforcing concrete and concrete comprising polyester fibers

摘要

The present invention relates to a polyamide fiber for concrete reinforcement, characterized in that a coating solution comprising an ester-based leveling agent and a polyalcohol emulsifier is coated on the surface of the polyester fiber. The polyester fiber produced in the present invention has the characteristics of high strength, high elasticity, and high abrasion resistance, but complements the disadvantages of hydrophobicity, while improving the dispersibility and adhesion in concrete, greatly improving the crack resistance, tensile strength and compressive strength of concrete. Can be improved.