The use of polypropylene fiber in concrete of the bridge deck paving can improve its tensile strength, bending strength, permeability strength, impact ductility, cracking resistance and toughness.
在桥面铺装层混凝土中掺用聚丙烯纤维能够增强其抗拉、抗折、抗渗、抗冲击能力，并起到阻裂增韧的作用。
After annealing coarse grain structure was observed and the impact ductility and the elongation of materials increased.
退火以后，发现材料的晶粒长大，材料的冲击韧性与延性提高。
Use these technical parameters, carry the semisolid extrusion shaping to the slurry, then test the impact ductility, rigidity and impacting grinding abrasion.
采用上述工艺参数对浆料进行半固态挤压成形，并对挤压件进行冲击韧性、硬度和冲击磨料磨损测试。
Use these technical parameters, carry the semisolid extrusion shaping to the slurry, then test the impact ductility, rigidity and impacting grinding abrasion.
采用上述工艺参数对浆料进行半固态挤压成形，并对挤压件进行冲击韧性、硬度和冲击磨料磨损测试。
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