不同种类纤维对海工混凝土力学性能的影响

Effects of Different Types of Fiber on Mechanical Performance of Marine Concrete

为了研究纤维种类对混凝土力学性能的影响,以C40海工混凝土为研究对象,考察了玄武岩纤维、聚丙烯纤维、碳纤维、仿钢纤维对混凝土抗压强度、抗拉强度、极限拉伸应变的影响规律,同时与不掺纤维的基准混凝土对比。结果表明,玄武岩纤维、聚丙烯纤维、碳纤维对混凝土的抗压强度以及抗拉强度影响不大,仿钢纤维的掺入均会造成抗拉强度以及抗压强度的明显下降;碳纤维对混凝土极限拉伸应变提高最大,其次是玄武岩纤维、聚丙烯纤维,仿钢纤维最差。

In order to study the effect of fiber type on mechanical properties of marine concrete, basalt fiber, polypropylene fiber , carbon fiber and steel infitation fiber are added into the C40 marine concrete, and the compressive strength,tensile strength and ultimate tensile strain are investigated and compared with these of original concrete. The results show that basalt fiber, polypropylene fiber and carbon fiber have little effect on the compressive strength and tensile strength of concrete, while both the tensile strength and the compressive strength are obviously reduced by the adding of steel fiber. The ultimate tensile strain of concrete mixed with carbon fiber is the greatest, followed by basalt fiber, polypropylene fiber, and the worst of steel imitation fiber.