聚丙烯腈纤维混凝土性能试验研究

Experimental Study on Polyacrylonitrile Fibre Concrete Performance

以河北丰宁抽水蓄能电站上、下库C30W12F400面板纤维混凝土为例,探讨了不同石粉含量、掺加聚丙烯腈纤维对混凝土力学性能影响,得出:沙中石粉含量对混凝土用水量、强度等性能影响极大,建议石粉含量控制在(10±2)%;聚丙烯腈纤维使用得当能够提高混凝土抗裂性,也可使混凝土的抗压强度和劈裂抗拉强度明显增大。

Taking Hebei Fengning pumped-storage power station upper and lower reservoir C30W12F400 panel fiber concrete of as a case, this paper discusses the influence of different stone powder content,mixed with polyacrylonitrile fiber or not on concrete mechanical properties, and it comes to the conclusion that the stone powder content in the sand has enormous influence on the concrete water consumption,strength and other properties, it suggests that the stone powder content should be control in（10＋2） %;Polyacrylonitrile fiber used properly can improve the crack resistance of concrete, it also can make the concrete compressive strength and splitting tensile strength increases obviously.