钢筋聚丙烯纤维混凝土简支梁的受弯试验

Experiment on the Flexural Properties of Simply Supported Polypropylene Fibers Reinforced Concrete Beams

通过对普通混凝土梁和聚丙烯纤维混凝土梁的试验,研究了低掺量下(0.9 kg/m3)聚丙烯纤维对钢筋混凝土梁受弯性能的影响.结果表明,聚丙烯纤维的掺入,能提高受弯构件的初裂荷载,在一定的荷载范围内,能起到减小裂缝宽度的作用,对受弯构件的刚度影响很小.

In this paper, the influence of polypropylene fibers on flexural properties of reinforced concrete beams is studied through the tests of plain concrete and polypropylene fibers reinforced concrete beams. The results show that the addition of polypropylene fibers can increase cracking load of flexural members. In certain range of load, fibers have impact on reducing crack width, while it almost has no impact on flexural stiffness of reinforced concrete members.