基于正交设计PVA-玄武岩混杂纤维高性能混凝土力学性能研究

Research on Mechanical Properties of High Performance Concrete with PVA -basalt Hybrid Fiber Based on Orthogonal Design

通过试验研究了玄武岩纤维(BF)、聚乙烯醇纤维(PVA)、矿渣微粉3种因素对C50混凝土力学性能的影响,测试了混杂纤维高性能混凝土(HFHPC)的立方体抗压强度、劈裂抗拉强度与抗折强度,将试验数据进行了极差与方差分析。试验结果表明,掺入适量的玄武岩纤维、PVA纤维和矿渣微粉可有效地提高混凝土的力学性能,最终得出了玄武岩纤维、PVA纤维及矿渣微粉的最佳掺量。

The effects of basalt fiber(BF),polyvinyl alcohol fiber(PVA)and slag powder on the mechanical properties of C50 concrete were studied through experiments.The cube compressive strength,splitting tensile strength and flexural strength of hybrid fiber high performance concrete(HFHPC)were tested.The test data were analyzed by range and variance.The experimental results show that the mechanical properties of concrete can be effectively improved by adding proper amount of basalt fiber,PVA fiber and slag powder.Finally,the optimal content of basalt fiber,PVA fiber and slag powder is obtained.