Фибра полипропиленовая

Polypropylene Fibers effectively control the microcracks resulting from ductile shrink of concrete,dry shrink and variations of temperature, prevent and constrain the from and development of cracks. As a new kind of reinforcement fibers for concrete,the polypropylene fibers have becoming a focus on research and applicationoffibrousconcretescienceafterglassfiberandsteelfibers. Properties ofPolypropylene Fibers Acide and Alkaly Resistance: Strong Length of Fiber: 10/12/15/19 Density: 0.91g/cm3 Tensile strength: 400MPa min Melting Point: 160-175.C Function of Polypropylene Fiber Reinforced Concrete Polypropylene Fibers have obvious advantages of its single fiber slim in length,large in amount after fully spread out in concrete,comparing with steel fibers,and they are characterized by their resistance to moisture and chemicals,and low in elastic modulus so made improvements in concrete performance in the following aspects: Constrain cracks resulted in ductile shrink Improve permeability Improve abrasion resistance Improve tensile strengthcapability of impact and fatigue Prevent and stave offmain structural bars from erosion Replace other forms in controlling nonstructural cracks Applications of Polypropylene Fibers Concrete pavementsbridge decksAirport runways and Manufacturing facilities Tunnelwalls and top deck of mining tunnel Riverway damreservoir Military infrastructures pier dock Highway barrier walls Concrete edging