Experimental Study on the Performance of Polyacrylonitrile Fiber Reinforced Pervious Concrete at 50MPa
摘要
To explore the balance between compressive strength and water permeation coefficient in pervious concrete, this study investigates the influence of variables such as water-binder ratio, fiber dosage, fiber length, fiber type, and designed porosity. Orthogonal experimental methods were utilized to assess these effects. The results indicate that optimal compressive strength, reaching 53.1 MPa, occurs at a water-binder ratio of 0.25, with designed porosity not exceeding 22%, and the inclusion of either 6mm or 12mm polyacrylonitrile fibers at 1.5 kg/m3, while maintaining a water permeation coefficient of at least 0.65 mm/s. Conversely, when the water-binder ratio is 0.25 with a designed porosity of 28% and 12 mm polyacrylonitrile fibers added at 0.9kg/m3, the water permeation coefficient peaks at 7.03 mm/s, but the compressive strength reduces to 20.5 MPa.