纤维素纤维对透水混凝土性能影响的研究

通过试验研究了纤维素纤维对透水混凝土基本性能的影响。研究表明掺入UF500纤维素纤维后,透水混凝土的7 d抗压强度、抗拉和抗折强度会显著增大,增幅分别达29.52%、34.72%、14.43%;28d抗拉和抗折强度也会显著增大,增幅分别达16.30%、29.89%,但抗压强度几乎不变;透水系数也有所增加。这说明掺入纤维素纤维在不影响透水混凝土的透水性能的情况下,可以显著改善其力学性能。

Study for Impact of Cellulose Fiber on Properties of Pervious Concrete

The impact of cellulose fiber on the basic properties of pervious concrete is studied here by means of experiments.The studies show that the compressive strength as well as the tensile and flexural strength of the pervious concrete at the 7th day would be increased remarkably after mixing UF500 cellulose fiber into it,and the increments would be up to 29.52%,34.72% and 14.43% respectively.The tensile and flexural strength at the 28th day would also be increased significantly,up to 16.30% and 29.89% respectively.But the compressive strength would almost be unchanged,and the permeability coefficient would be increased as well.All these show that the cellulose fiber could dramatically improve the mechanical properties of pervious concrete without affecting the permeability coefficient after mixing the cellulose fiber.