摘   要：在固定水灰比为0.4条件下，对比了玻璃纤维、聚乙烯醇乳液单掺与复掺时对水泥砂浆抗折、抗压强度的影响，同时研究了复掺情况下玻璃纤维的表面状况及其耐碱腐蚀能力。结果表明，玻璃纤维与聚合物乳液复掺时，水泥砂浆的抗压强度和抗折强度较聚合物单掺都有小幅度增加，在纤维掺量为水泥质量的1.0%、聚灰比为7.5%时，玻璃纤维聚合物水泥砂浆的柔性最大，纤维-聚合物复掺能够使其性能得到进一步改善，效果优于两者的单掺效果。通过耐碱性试验及扫描电镜分析探讨了玻璃纤维与聚合物乳液复掺时对纤维耐碱性能的影响，结果表明，两者复掺可有效填充水泥基材料内部的宏观与微观缺陷，提高界面过渡区的密实程度。

Abstract: The influence on flexural strength and the compressive strength of cement mortar is compared with single-mixed and double-mixed glass fiber and polyvinyl alcohol emulsion,under water-cement ratio of 0.4. Meanwhile, the glass fiber surface condition and alkali corrosion resistance ability are studied in double mixed with glass fiber and polyvinyl alcohol emulsion. The results show that, the compressive strength and flexural strength of cement mortar are slightly increased as glass fiber mixed with polyvinyl alcohol emulsion, when fiber content is 1% of cement quality and the ratio of polymer cement mortar is 7.5%, the flexible of glass fiber polymer modified cement mortar is the maximum, the performance can be further improved by mixed with fiber-polymer, which the effects of  double-mixed fiber and polymer is better than single-mixed fiber and polymer. Through alkali resistance test and scanning electron microscope (SEM), the influence on alkali resistance of fiber as double mixed glass fiber and polyvinyl alcohol emulsion, the results indicate that, the macro and micro defects of cement-based materials can be effectively filled as double mixed glass fiber and polyvinyl alcohol emulsion, and the density degree of the interface transition zone has been improved.