PVA纤维对混凝土抗裂性能的影响研究

Research on Effect of PVA Fiber to Concrete Anti-cracking Performance

针对锦屏二级水电站引水隧洞末端的4个调压井,通过掺入不同掺量的PVA纤维进行混凝土的开裂性能试验研究,得出PVA混凝土最佳纤维掺量为0.9%的结果。在此基础上,探讨了PVA纤维混凝土的配合比,提出了施工现场泵送适应性建议。

Aiming at the four surge shafts of Jinping II hydropower station diversion tunnel, by mixing different mixing amount PVA fiber to research concrete cracking performance test, it gets the best PVA concrete fiber mixing amount is 0.9%. Based on the result, it discusses the mixing proportion of PVA fiber concrete and puts forwards the adaptation advice of construction site pumping.