CAJ | 학술논문

采用聚乙烯醇纤维（ Polyvinyl Alcohol，简称PVA纤维）制备高性能纤维增强水泥基复合材料（ PVA-ECC），通过立方体抗压强度和梁四点弯曲试验分别研究不同PVA纤维体积掺入量、不同砂胶比以及粉煤灰掺入量对PVA-ECC材料的抗压强度与弯曲性能的影响。结果表明：随着纤维掺入量的增加PVA-ECC抗压强度逐渐降低，但弯曲延性增强。砂胶比的降低使得纤维更好的分散，延性效果得到明显改善。粉煤灰掺量的增加改善了PVA-ECC搅拌时的流动度，梁的抗弯承载力有所降低，但延性提高。
채용취을희순섬유（ Polyvinyl Alcohol，간칭PVA섬유）제비고성능섬유증강수니기복합재료（ PVA-ECC），통과립방체항압강도화량사점만곡시험분별연구불동PVA섬유체적참입량、불동사효비이급분매회참입량대PVA-ECC재료적항압강도여만곡성능적영향。결과표명：수착섬유참입량적증가PVA-ECC항압강도축점강저，단만곡연성증강。사효비적강저사득섬유경호적분산，연성효과득도명현개선。분매회참량적증가개선료PVA-ECC교반시적류동도，량적항만승재력유소강저，단연성제고。
High performance fiber-reinforced cement-based composites(PVA-ECC)were produced based on polyvinyl alcohol fi-bers( PVA). The influences of the fiber volume content,sand-binder ratio and fly ash contenton the compressive strength and bending performance of the PVA-ECC material by using cubic compression test and four-point bending test. The results show that the com-pressive strength gradually decreases with an increase in fiber volume content. But the ductility is improved. The lower sand-binder ra-tio can help to improve fiber dispersion,and the ductility is obviously improved. An increase in the fly ash content improves PVA-ECC mixing flowability,reduces the flexural strength,and increases the ductility.