Analysis of the Effect of Kevlar Fibers on Abrasion Resistance, Flexural Strength and Hydraulic Conductivity Coefficient of Silica Fume Concretes

Reinforcing fiber and silica fume of concrete can be considered as one of the most widely used additives. In this study, with a review of the history and advantages of using silica fume and polypropylene fibers in concrete, 380 concrete laboratory samples were constructed, of which 25 mixing designs with water–cement ratio of 0.35 and fiber content of 0.2, 0.3, 0.4 and 0.5 of concrete volume and 7% silica fume were prepared according to the ACI standard in their manufacturing. In the present research, samples of Kevlar fiber containing silica fume were tested under flexural strength, abrasion resistance and hydraulic conductivity coefficient. According to achieved results, the optimum amount of fiber used for flexural strength is 0.4% and the hydraulic conductivity coefficient and abrasion resistance of 0.3% volumetric concrete with 7% silica fume were used in concrete mixing.