This study aimed to determine the abrasion resistance of ultra-high-performance concretes (UHPCs) for railway sleepers. Test samples were made with different cementitious material combinations and varying steel fiber contents and shapes, using conventional fine aggregate. A total of 25 UHPCs and two high-strength concretes (HSCs) were selected to evaluate their depth of wear and bulk properties. The results of the coefficient of variation (CV), relative gain in abrasion, and abrasion index of the studied UHPCs were also obtained and discussed. Furthermore, a comparison was made on the resistance to wear of the selected UHPCs with those of the HSCs typically used for prestressed concrete sleepers. The outcomes of this study revealed that UHPCs displayed excellent resistance against abrasion, well above that of HSCs. Amongst the utilized cementitious material combinations, UHPCs made with silica fume as a partial replacement of cement performed best against abrasion, whereas mixtures containing fly ash showed the highest depth of wear. The addition of steel fibers had a more positive influence on the abrasion resistance than it did on compressive strength of the studied UHPCs.

这项研究旨在确定铁路轨枕用超高性能混凝土（UHPC）的耐磨性。使用常规的细骨料，用不同的胶结材料组合和变化的钢纤维含量和形状制成测试样品。总共选择了25个UHPC和两种高强度混凝土（HSC）来评估它们的磨损深度和整体性能。还获得并讨论了所研究UHPC的变异系数（CV），相对磨损率和磨损指数的结果。此外，对所选UHPC的耐磨性与通常用于预应力混凝土轨枕的HSC的耐磨性进行了比较。这项研究的结果表明，UHPC具有优异的耐磨性，远高于HSC。在使用的胶结材料组合中，以硅粉作为水泥的部分替代品制成的UHPC的抗磨损性能最佳，而含粉煤灰的混合物则显示出最高的磨损深度。钢纤维的添加对耐磨性的影响比对所研究的UHPC的抗压强度的影响更大。