Abstract: For meeting the per formance demands of pavement cement base material, key trials for abrasion and impact characteristic of steel fiber and polypropylene fiber strength latex mortar were taken. On the result of ball bearing wear test, used abrasion resistance index analyses the characteristic and its influence factors of the mortar.For the distinct impact test result, adopt energy consumption mechanisms, impact to ughness discuss the addition of steel fiber and polypropylene fiber on the wear and impact property of latex mortar. The result shows the addition of steel fiber and polypr opylene fiber in latex mortar could greatly improve its abrasion and impact property,and polypropylene fiber could tremendo us enhance the impact performance after the initial crack. The conclusion of this paper advanced new ideal for mortar and concrete in the use of pavement, and gives reference for the application of steel fiber and polypropylene strength latex mortar and concrete.

Key words: abrasion resistance index , impact toughness, fiber, latex modified mortar

摘要： 针对道面对水泥基材料的性能要求,重点对不同体积掺量下钢纤维、聚丙烯纤维增强聚合物水泥砂浆的耐磨性能及抗冲击性能进行了试验.在砂浆试块滚珠式耐磨试验结果的基础上,采用耐磨度为标准对钢纤维、聚丙烯纤维增强聚合物砂浆的磨耗性能及其影响因素进行了分析;针对钢纤维、聚丙烯纤维增强聚合物水泥砂浆冲击试验的不同结果,以冲击延性、能耗机理等讨论了钢纤维、聚丙烯纤维的掺入对聚合物水泥砂浆抗冲击、耐磨损性能的影响.分析结果表明,钢纤维、聚丙烯纤维的掺入能够显著地改善聚合物水泥砂浆的抗磨耗和抗冲击性能,聚丙烯纤维能大幅度地改善聚合物水泥砂浆初裂后的抗冲击性能.该研究为水泥砂浆和混凝土在道面中的应用开阔了新的思路,并为钢纤维、聚丙烯纤维增强聚合物水泥砂浆和混凝土的应用提供了参考依据.

关键词: 磨损度, 冲击延性, 纤维, 聚合物改性砂浆