CAJ | 학술논문

为了进一步在工程中应用 PVA 纤维水泥基复合材料,通过拉拔试验,研究 PVA 纤维水泥基复合材料抗拉强度、纤维体积掺量、钢筋锚固长度、相对保护层厚度对 PVA纤维水泥基复合材料与钢筋平均黏结强度的影响.结果表明: PVA 纤维水泥基复合材料与钢筋的平均黏结强度在纤维体积掺量为1. 71%时最大;PVA纤维水泥基复合材料与钢筋的平均黏结强度随相对锚固长度的增加而减小;PVA纤维水泥基复合材料与钢筋的平均黏结强度随相对保护层厚度的增加而增加,但存在一个临界值,在4. 19 ~5. 75 之间.最后回归得出了PVA纤维水泥基复合材料与钢筋的平均黏结强度计算公式,与试验值吻合较好.
위료진일보재공정중응용 PVA 섬유수니기복합재료,통과랍발시험,연구 PVA 섬유수니기복합재료항랍강도、섬유체적참량、강근묘고장도、상대보호층후도대 PVA섬유수니기복합재료여강근평균점결강도적영향.결과표명: PVA 섬유수니기복합재료여강근적평균점결강도재섬유체적참량위1. 71%시최대;PVA섬유수니기복합재료여강근적평균점결강도수상대묘고장도적증가이감소;PVA섬유수니기복합재료여강근적평균점결강도수상대보호층후도적증가이증가,단존재일개림계치,재4. 19 ~5. 75 지간.최후회귀득출료PVA섬유수니기복합재료여강근적평균점결강도계산공식,여시험치문합교호.
For further application of PVA fiber cement-based composites in engineering,the influence of PVA fiber cement-based composites tensile strength,fibers volume fraction,anchorage length of steel bar and relative protective thickness on PVA fiber cement-based composites and average bonding strength of steel bar by pull-out test. T he results showed that average bond strength of PVA fiber cement-based composites and steel bar is maximal when fiber volume fraction is 1. 71%,average bond strength of PVA fiber cement-based composites and steel bar decreases w ith relative anchorage length increasing and increases w ith the increasing of relative protective thickness,the critical value of which is between 4. 19 and 5. 75. Average bond strength calculation equation of PVA fiber cement-based composites and steel bar was concluded,which is in good agreement with test values.