Basalt fiber chopped yarn is a product chopped from continuous basalt fiber strands or pretreated fibers, and the fiber is coated with (silane) sizing agent. Basalt fiber chopped strand yarn is the material of choice for reinforcing thermoplastic resin, and it is also the best material for reinforcing concrete. Basalt is a high-performance volcanic rock component. This special silicate gives basalt fiber excellent chemical resistance, especially alkali resistance. Therefore, basalt fiber is an excellent material to replace polypropylene (PP) and acrylic polyacrylonitrile (PAN) to strengthen cement concrete, and it is also a very competitive product for asphalt concrete instead of polyester fiber and lignin fiber. Improve the high stability, low temperature crack resistance and fatigue resistance of asphalt concrete.