Supply of polypropylene mesh polypropylene fiber-ebdoor Mr. Ma 13,091,006,138 raw material is polypropylene mesh fiber (PP), through a series of special processing, its appearance is a multi-root monofilament fiber cross-linking to form network like structure. When the polypropylene fiber mesh fiber into the concrete structure after the mixing process, the polypropylene mesh fibers were then stretched horizontally, so that each fiber of polypropylene mesh fiber network is fully opened to form three-dimensional network evenly distributed in the concrete, so as to achieve the purpose of impermeable crack. The other advantages of polypropylene mesh fiber polypropylene staple fiber can refer to the information. Physico-chemical parameters of polypropylene mesh fiber density (g/cm3) 0.9 Length (mm) 20-36 mesh acid-beam shape and strong tensile strength (Mpa) ≥ 560 conductive inelastic modulus (Mpa)> 3500 equivalent diameter (μm) <100 Elongation at break (%) 10-25 absorbent no melting point (℃) 160-180 very low thermal conductivity of polypropylene mesh fibers mixed with polypropylene mesh for use although the fiber mesh concrete fiber is indeed possible The crack resistance was significantly improved, but in general, the polypropylene fiber mesh fiber network only as a secondary ribs, it can not bear the main load. Experiments show that, although polypropylene mesh fiber network fiber dispersion obtained after the number of monofilament fiber lot, but only because every cubic meter of concrete added 0.9-1.8 kg, only the concrete volume of 0.1% -0.2%, so Concrete does not significantly affect other properties. In addition, not due to the additional polypropylene fiber mesh fiber network to change the original design and construction specifications. Mesh used in general engineering in fiber length of 20mm is appropriate. Under normal circumstances, unilateral polypropylene mesh fiber mesh concrete fiber incorporation is appropriate to 0.9kg, bridge deck waterproofing layer dosage of 1.8kg, and do not have to change the amount of other materials.